diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index 08b3ba9a9..5b0ffcd6e 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -373,17 +373,17 @@ type WorkerStruct struct {
 		Paths     func(context.Context) ([]stores.StoragePath, error)            `perm:"admin"`
 		Info      func(context.Context) (storiface.WorkerInfo, error)            `perm:"admin"`
 
-		AddPiece        func(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error)                 `perm:"admin"`
-		SealPreCommit1  func(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error)                                                              `perm:"admin"`
-		SealPreCommit2  func(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (storiface.CallID, error)                                                                                     `perm:"admin"`
-		SealCommit1     func(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) `perm:"admin"`
-		SealCommit2     func(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (storiface.CallID, error)                                                                                         `perm:"admin"`
-		FinalizeSector  func(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) (storiface.CallID, error)                                                                                   `perm:"admin"`
-		ReleaseUnsealed func(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) (storiface.CallID, error)                                                                                     `perm:"admin"`
-		MoveStorage     func(ctx context.Context, sector abi.SectorID, types storiface.SectorFileType) (storiface.CallID, error)                                                                                 `perm:"admin"`
-		UnsealPiece     func(context.Context, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) (storiface.CallID, error)                                           `perm:"admin"`
-		ReadPiece       func(context.Context, io.Writer, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize) (storiface.CallID, error)                                                             `perm:"admin"`
-		Fetch           func(context.Context, abi.SectorID, storiface.SectorFileType, storiface.PathType, storiface.AcquireMode) (storiface.CallID, error)                                                       `perm:"admin"`
+		AddPiece        func(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error)                 `perm:"admin"`
+		SealPreCommit1  func(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error)                                                              `perm:"admin"`
+		SealPreCommit2  func(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (storiface.CallID, error)                                                                                     `perm:"admin"`
+		SealCommit1     func(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) `perm:"admin"`
+		SealCommit2     func(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (storiface.CallID, error)                                                                                         `perm:"admin"`
+		FinalizeSector  func(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (storiface.CallID, error)                                                                                   `perm:"admin"`
+		ReleaseUnsealed func(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) (storiface.CallID, error)                                                                                     `perm:"admin"`
+		MoveStorage     func(ctx context.Context, sector storage.SectorRef, types storiface.SectorFileType) (storiface.CallID, error)                                                                                 `perm:"admin"`
+		UnsealPiece     func(context.Context, storage.SectorRef, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) (storiface.CallID, error)                                           `perm:"admin"`
+		ReadPiece       func(context.Context, io.Writer, storage.SectorRef, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize) (storiface.CallID, error)                                                             `perm:"admin"`
+		Fetch           func(context.Context, storage.SectorRef, storiface.SectorFileType, storiface.PathType, storiface.AcquireMode) (storiface.CallID, error)                                                       `perm:"admin"`
 
 		Remove          func(ctx context.Context, sector abi.SectorID) error `perm:"admin"`
 		StorageAddLocal func(ctx context.Context, path string) error         `perm:"admin"`
@@ -1513,47 +1513,47 @@ func (w *WorkerStruct) Info(ctx context.Context) (storiface.WorkerInfo, error) {
 	return w.Internal.Info(ctx)
 }
 
-func (w *WorkerStruct) AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
+func (w *WorkerStruct) AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
 	return w.Internal.AddPiece(ctx, sector, pieceSizes, newPieceSize, pieceData)
 }
 
-func (w *WorkerStruct) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
+func (w *WorkerStruct) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	return w.Internal.SealPreCommit1(ctx, sector, ticket, pieces)
 }
 
-func (w *WorkerStruct) SealPreCommit2(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
+func (w *WorkerStruct) SealPreCommit2(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
 	return w.Internal.SealPreCommit2(ctx, sector, pc1o)
 }
 
-func (w *WorkerStruct) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
+func (w *WorkerStruct) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
 	return w.Internal.SealCommit1(ctx, sector, ticket, seed, pieces, cids)
 }
 
-func (w *WorkerStruct) SealCommit2(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (storiface.CallID, error) {
+func (w *WorkerStruct) SealCommit2(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (storiface.CallID, error) {
 	return w.Internal.SealCommit2(ctx, sector, c1o)
 }
 
-func (w *WorkerStruct) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) (storiface.CallID, error) {
+func (w *WorkerStruct) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (storiface.CallID, error) {
 	return w.Internal.FinalizeSector(ctx, sector, keepUnsealed)
 }
 
-func (w *WorkerStruct) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) (storiface.CallID, error) {
+func (w *WorkerStruct) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) (storiface.CallID, error) {
 	return w.Internal.ReleaseUnsealed(ctx, sector, safeToFree)
 }
 
-func (w *WorkerStruct) MoveStorage(ctx context.Context, sector abi.SectorID, types storiface.SectorFileType) (storiface.CallID, error) {
+func (w *WorkerStruct) MoveStorage(ctx context.Context, sector storage.SectorRef, types storiface.SectorFileType) (storiface.CallID, error) {
 	return w.Internal.MoveStorage(ctx, sector, types)
 }
 
-func (w *WorkerStruct) UnsealPiece(ctx context.Context, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, c cid.Cid) (storiface.CallID, error) {
+func (w *WorkerStruct) UnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, c cid.Cid) (storiface.CallID, error) {
 	return w.Internal.UnsealPiece(ctx, sector, offset, size, ticket, c)
 }
 
-func (w *WorkerStruct) ReadPiece(ctx context.Context, sink io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
+func (w *WorkerStruct) ReadPiece(ctx context.Context, sink io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
 	return w.Internal.ReadPiece(ctx, sink, sector, offset, size)
 }
 
-func (w *WorkerStruct) Fetch(ctx context.Context, id abi.SectorID, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
+func (w *WorkerStruct) Fetch(ctx context.Context, id storage.SectorRef, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
 	return w.Internal.Fetch(ctx, id, fileType, ptype, am)
 }
 
diff --git a/api/docgen/docgen.go b/api/docgen/docgen.go
index 3eaa6359e..e82ca882f 100644
--- a/api/docgen/docgen.go
+++ b/api/docgen/docgen.go
@@ -90,7 +90,7 @@ func init() {
 	addExample(&pid)
 
 	addExample(bitfield.NewFromSet([]uint64{5}))
-	addExample(abi.RegisteredSealProof_StackedDrg32GiBV1)
+	addExample(abi.RegisteredSealProof_StackedDrg32GiBV1_1)
 	addExample(abi.RegisteredPoStProof_StackedDrgWindow32GiBV1)
 	addExample(abi.ChainEpoch(10101))
 	addExample(crypto.SigTypeBLS)
diff --git a/api/test/ccupgrade.go b/api/test/ccupgrade.go
index 75f72d861..4f6b39701 100644
--- a/api/test/ccupgrade.go
+++ b/api/test/ccupgrade.go
@@ -31,7 +31,7 @@ func TestCCUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration) {
 
 func testCCUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration, upgradeHeight abi.ChainEpoch) {
 	ctx := context.Background()
-	n, sn := b(t, []FullNodeOpts{FullNodeWithUpgradeAt(upgradeHeight)}, OneMiner)
+	n, sn := b(t, []FullNodeOpts{FullNodeWithActorsV2At(upgradeHeight)}, OneMiner)
 	client := n[0].FullNode.(*impl.FullNodeAPI)
 	miner := sn[0]
 
diff --git a/api/test/test.go b/api/test/test.go
index bae3d520e..a1b82c590 100644
--- a/api/test/test.go
+++ b/api/test/test.go
@@ -109,7 +109,7 @@ var OneMiner = []StorageMiner{{Full: 0, Preseal: PresealGenesis}}
 var OneFull = DefaultFullOpts(1)
 var TwoFull = DefaultFullOpts(2)
 
-var FullNodeWithUpgradeAt = func(upgradeHeight abi.ChainEpoch) FullNodeOpts {
+var FullNodeWithActorsV2At = func(upgradeHeight abi.ChainEpoch) FullNodeOpts {
 	return FullNodeOpts{
 		Opts: func(nodes []TestNode) node.Option {
 			return node.Override(new(stmgr.UpgradeSchedule), stmgr.UpgradeSchedule{{
@@ -122,6 +122,25 @@ var FullNodeWithUpgradeAt = func(upgradeHeight abi.ChainEpoch) FullNodeOpts {
 	}
 }
 
+var FullNodeWithSDRAt = func(calico, persian abi.ChainEpoch) FullNodeOpts {
+	return FullNodeOpts{
+		Opts: func(nodes []TestNode) node.Option {
+			return node.Override(new(stmgr.UpgradeSchedule), stmgr.UpgradeSchedule{{
+				Network:   network.Version6,
+				Height:    1,
+				Migration: stmgr.UpgradeActorsV2,
+			}, {
+				Network:   network.Version7,
+				Height:    calico,
+				Migration: stmgr.UpgradeCalico,
+			}, {
+				Network: network.Version8,
+				Height:  persian,
+			}})
+		},
+	}
+}
+
 var MineNext = miner.MineReq{
 	InjectNulls: 0,
 	Done:        func(bool, abi.ChainEpoch, error) {},
diff --git a/api/test/window_post.go b/api/test/window_post.go
index 55fc4ad70..ff107ae8d 100644
--- a/api/test/window_post.go
+++ b/api/test/window_post.go
@@ -3,18 +3,22 @@ package test
 import (
 	"context"
 	"fmt"
+	"sort"
 	"sync/atomic"
 
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/go-state-types/network"
 	"github.com/filecoin-project/lotus/extern/sector-storage/mock"
 	sealing "github.com/filecoin-project/lotus/extern/storage-sealing"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
@@ -23,6 +27,90 @@ import (
 	"github.com/filecoin-project/lotus/node/impl"
 )
 
+func TestSDRUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	n, sn := b(t, []FullNodeOpts{FullNodeWithSDRAt(500, 1000)}, OneMiner)
+	client := n[0].FullNode.(*impl.FullNodeAPI)
+	miner := sn[0]
+
+	addrinfo, err := client.NetAddrsListen(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := miner.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+	build.Clock.Sleep(time.Second)
+
+	pledge := make(chan struct{})
+	mine := int64(1)
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		round := 0
+		for atomic.LoadInt64(&mine) != 0 {
+			build.Clock.Sleep(blocktime)
+			if err := sn[0].MineOne(ctx, bminer.MineReq{Done: func(bool, abi.ChainEpoch, error) {
+
+			}}); err != nil {
+				t.Error(err)
+			}
+
+			// 3 sealing rounds: before, during after.
+			if round >= 3 {
+				continue
+			}
+
+			head, err := client.ChainHead(ctx)
+			assert.NoError(t, err)
+
+			// rounds happen every 100 blocks, with a 50 block offset.
+			if head.Height() >= abi.ChainEpoch(round*500+50) {
+				round++
+				pledge <- struct{}{}
+
+				ver, err := client.StateNetworkVersion(ctx, head.Key())
+				assert.NoError(t, err)
+				switch round {
+				case 1:
+					assert.Equal(t, network.Version6, ver)
+				case 2:
+					assert.Equal(t, network.Version7, ver)
+				case 3:
+					assert.Equal(t, network.Version8, ver)
+				}
+			}
+
+		}
+	}()
+
+	// before.
+	pledgeSectors(t, ctx, miner, 9, 0, pledge)
+
+	s, err := miner.SectorsList(ctx)
+	require.NoError(t, err)
+	sort.Slice(s, func(i, j int) bool {
+		return s[i] < s[j]
+	})
+
+	for i, id := range s {
+		info, err := miner.SectorsStatus(ctx, id, true)
+		require.NoError(t, err)
+		expectProof := abi.RegisteredSealProof_StackedDrg2KiBV1
+		if i >= 3 {
+			// after
+			expectProof = abi.RegisteredSealProof_StackedDrg2KiBV1_1
+		}
+		assert.Equal(t, expectProof, info.SealProof, "sector %d, id %d", i, id)
+	}
+
+	atomic.StoreInt64(&mine, 0)
+	<-done
+}
+
 func TestPledgeSector(t *testing.T, b APIBuilder, blocktime time.Duration, nSectors int) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -63,11 +151,13 @@ func TestPledgeSector(t *testing.T, b APIBuilder, blocktime time.Duration, nSect
 
 func pledgeSectors(t *testing.T, ctx context.Context, miner TestStorageNode, n, existing int, blockNotif <-chan struct{}) {
 	for i := 0; i < n; i++ {
-		err := miner.PledgeSector(ctx)
-		require.NoError(t, err)
 		if i%3 == 0 && blockNotif != nil {
 			<-blockNotif
+			log.Errorf("WAIT")
 		}
+		log.Errorf("PLEDGING %d", i)
+		err := miner.PledgeSector(ctx)
+		require.NoError(t, err)
 	}
 
 	for {
@@ -126,7 +216,7 @@ func testWindowPostUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration,
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	n, sn := b(t, []FullNodeOpts{FullNodeWithUpgradeAt(upgradeHeight)}, OneMiner)
+	n, sn := b(t, []FullNodeOpts{FullNodeWithActorsV2At(upgradeHeight)}, OneMiner)
 
 	client := n[0].FullNode.(*impl.FullNodeAPI)
 	miner := sn[0]
@@ -209,15 +299,17 @@ func testWindowPostUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration,
 
 		// Drop the partition
 		err = secs.ForEach(func(sid uint64) error {
-			return miner.StorageMiner.(*impl.StorageMinerAPI).IStorageMgr.(*mock.SectorMgr).MarkCorrupted(abi.SectorID{
-				Miner:  abi.ActorID(mid),
-				Number: abi.SectorNumber(sid),
+			return miner.StorageMiner.(*impl.StorageMinerAPI).IStorageMgr.(*mock.SectorMgr).MarkCorrupted(storage.SectorRef{
+				ID: abi.SectorID{
+					Miner:  abi.ActorID(mid),
+					Number: abi.SectorNumber(sid),
+				},
 			}, true)
 		})
 		require.NoError(t, err)
 	}
 
-	var s abi.SectorID
+	var s storage.SectorRef
 
 	// Drop 1 sectors from deadline 3 partition 0
 	{
@@ -238,9 +330,11 @@ func testWindowPostUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration,
 		require.NoError(t, err)
 		fmt.Println("the sectors", all)
 
-		s = abi.SectorID{
-			Miner:  abi.ActorID(mid),
-			Number: abi.SectorNumber(sn),
+		s = storage.SectorRef{
+			ID: abi.SectorID{
+				Miner:  abi.ActorID(mid),
+				Number: abi.SectorNumber(sn),
+			},
 		}
 
 		err = miner.StorageMiner.(*impl.StorageMinerAPI).IStorageMgr.(*mock.SectorMgr).MarkFailed(s, true)
diff --git a/build/params_2k.go b/build/params_2k.go
index 3757a0357..c86de7ffa 100644
--- a/build/params_2k.go
+++ b/build/params_2k.go
@@ -23,6 +23,7 @@ var UpgradeLiftoffHeight = abi.ChainEpoch(-5)
 
 const UpgradeKumquatHeight = 15
 const UpgradeCalicoHeight = 20
+const UpgradePersianHeight = 25
 
 var DrandSchedule = map[abi.ChainEpoch]DrandEnum{
 	0: DrandMainnet,
diff --git a/build/params_mainnet.go b/build/params_mainnet.go
index 9d5b643b7..0d5a9e8f9 100644
--- a/build/params_mainnet.go
+++ b/build/params_mainnet.go
@@ -40,13 +40,10 @@ const UpgradeKumquatHeight = 170000
 
 // TODO: Height??
 const UpgradeCalicoHeight = 999999
+const UpgradePersianHeight = UpgradeCalicoHeight + (builtin2.EpochsInDay * 2)
 
 func init() {
 	policy.SetConsensusMinerMinPower(abi.NewStoragePower(10 << 40))
-	policy.SetSupportedProofTypes(
-		abi.RegisteredSealProof_StackedDrg32GiBV1,
-		abi.RegisteredSealProof_StackedDrg64GiBV1,
-	)
 
 	if os.Getenv("LOTUS_USE_TEST_ADDRESSES") != "1" {
 		SetAddressNetwork(address.Mainnet)
diff --git a/build/params_shared_vals.go b/build/params_shared_vals.go
index 5070777bd..0d048985c 100644
--- a/build/params_shared_vals.go
+++ b/build/params_shared_vals.go
@@ -25,7 +25,7 @@ const UnixfsLinksPerLevel = 1024
 // Consensus / Network
 
 const AllowableClockDriftSecs = uint64(1)
-const NewestNetworkVersion = network.Version6
+const NewestNetworkVersion = network.Version8
 const ActorUpgradeNetworkVersion = network.Version4
 
 // Epochs
diff --git a/build/params_testground.go b/build/params_testground.go
index 6a8e2abf3..ad23143d7 100644
--- a/build/params_testground.go
+++ b/build/params_testground.go
@@ -89,12 +89,13 @@ var (
 	UpgradeLiftoffHeight  abi.ChainEpoch = -5
 	UpgradeKumquatHeight  abi.ChainEpoch = -6
 	UpgradeCalicoHeight   abi.ChainEpoch = -7
+	UpgradePersianHeight  abi.ChainEpoch = -8
 
 	DrandSchedule = map[abi.ChainEpoch]DrandEnum{
 		0: DrandMainnet,
 	}
 
-	NewestNetworkVersion       = network.Version5
+	NewestNetworkVersion       = network.Version8
 	ActorUpgradeNetworkVersion = network.Version4
 
 	Devnet = true
diff --git a/build/version.go b/build/version.go
index 0e63b2a27..65eb5be63 100644
--- a/build/version.go
+++ b/build/version.go
@@ -84,8 +84,8 @@ func VersionForType(nodeType NodeType) (Version, error) {
 // semver versions of the rpc api exposed
 var (
 	FullAPIVersion   = newVer(0, 17, 0)
-	MinerAPIVersion  = newVer(0, 17, 0)
-	WorkerAPIVersion = newVer(0, 16, 0)
+	MinerAPIVersion  = newVer(0, 18, 0)
+	WorkerAPIVersion = newVer(0, 17, 0)
 )
 
 //nolint:varcheck,deadcode
diff --git a/chain/actors/builtin/miner/utils.go b/chain/actors/builtin/miner/utils.go
index f9c6b3da3..2f24e8454 100644
--- a/chain/actors/builtin/miner/utils.go
+++ b/chain/actors/builtin/miner/utils.go
@@ -4,6 +4,8 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-bitfield"
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/go-state-types/network"
 )
 
 func AllPartSectors(mas State, sget func(Partition) (bitfield.BitField, error)) (bitfield.BitField, error) {
@@ -26,3 +28,42 @@ func AllPartSectors(mas State, sget func(Partition) (bitfield.BitField, error))
 
 	return bitfield.MultiMerge(parts...)
 }
+
+// SealProofTypeFromSectorSize returns preferred seal proof type for creating
+// new miner actors and new sectors
+func SealProofTypeFromSectorSize(ssize abi.SectorSize, nv network.Version) (abi.RegisteredSealProof, error) {
+	switch {
+	case nv < network.Version7:
+		switch ssize {
+		case 2 << 10:
+			return abi.RegisteredSealProof_StackedDrg2KiBV1, nil
+		case 8 << 20:
+			return abi.RegisteredSealProof_StackedDrg8MiBV1, nil
+		case 512 << 20:
+			return abi.RegisteredSealProof_StackedDrg512MiBV1, nil
+		case 32 << 30:
+			return abi.RegisteredSealProof_StackedDrg32GiBV1, nil
+		case 64 << 30:
+			return abi.RegisteredSealProof_StackedDrg64GiBV1, nil
+		default:
+			return 0, xerrors.Errorf("unsupported sector size for miner: %v", ssize)
+		}
+	case nv >= network.Version7:
+		switch ssize {
+		case 2 << 10:
+			return abi.RegisteredSealProof_StackedDrg2KiBV1_1, nil
+		case 8 << 20:
+			return abi.RegisteredSealProof_StackedDrg8MiBV1_1, nil
+		case 512 << 20:
+			return abi.RegisteredSealProof_StackedDrg512MiBV1_1, nil
+		case 32 << 30:
+			return abi.RegisteredSealProof_StackedDrg32GiBV1_1, nil
+		case 64 << 30:
+			return abi.RegisteredSealProof_StackedDrg64GiBV1_1, nil
+		default:
+			return 0, xerrors.Errorf("unsupported sector size for miner: %v", ssize)
+		}
+	}
+
+	return 0, xerrors.Errorf("unsupported network version")
+}
diff --git a/chain/actors/policy/policy.go b/chain/actors/policy/policy.go
index 492be79e9..a19a43aaa 100644
--- a/chain/actors/policy/policy.go
+++ b/chain/actors/policy/policy.go
@@ -26,26 +26,29 @@ const (
 // SetSupportedProofTypes sets supported proof types, across all actor versions.
 // This should only be used for testing.
 func SetSupportedProofTypes(types ...abi.RegisteredSealProof) {
-	newTypes := make(map[abi.RegisteredSealProof]struct{}, len(types))
-	for _, t := range types {
-		newTypes[t] = struct{}{}
-	}
-	// Set for all miner versions.
-	miner0.SupportedProofTypes = newTypes
-	miner2.PreCommitSealProofTypesV0 = newTypes
-	miner2.PreCommitSealProofTypesV7 = newTypes
-	miner2.PreCommitSealProofTypesV8 = newTypes
+	miner0.SupportedProofTypes = make(map[abi.RegisteredSealProof]struct{}, len(types))
+	miner2.PreCommitSealProofTypesV0 = make(map[abi.RegisteredSealProof]struct{}, len(types))
+	miner2.PreCommitSealProofTypesV7 = make(map[abi.RegisteredSealProof]struct{}, len(types))
+	miner2.PreCommitSealProofTypesV8 = make(map[abi.RegisteredSealProof]struct{}, len(types))
+
+	AddSupportedProofTypes(types...)
 }
 
 // AddSupportedProofTypes sets supported proof types, across all actor versions.
 // This should only be used for testing.
 func AddSupportedProofTypes(types ...abi.RegisteredSealProof) {
 	for _, t := range types {
+		if t >= abi.RegisteredSealProof_StackedDrg2KiBV1_1 {
+			panic("must specify v1 proof types only")
+		}
 		// Set for all miner versions.
 		miner0.SupportedProofTypes[t] = struct{}{}
 		miner2.PreCommitSealProofTypesV0[t] = struct{}{}
+
 		miner2.PreCommitSealProofTypesV7[t] = struct{}{}
-		miner2.PreCommitSealProofTypesV8[t] = struct{}{}
+		miner2.PreCommitSealProofTypesV7[t+abi.RegisteredSealProof_StackedDrg2KiBV1_1] = struct{}{}
+
+		miner2.PreCommitSealProofTypesV8[t+abi.RegisteredSealProof_StackedDrg2KiBV1_1] = struct{}{}
 	}
 }
 
diff --git a/chain/actors/version.go b/chain/actors/version.go
index fe16d521e..1cafa45c9 100644
--- a/chain/actors/version.go
+++ b/chain/actors/version.go
@@ -18,7 +18,7 @@ func VersionForNetwork(version network.Version) Version {
 	switch version {
 	case network.Version0, network.Version1, network.Version2, network.Version3:
 		return Version0
-	case network.Version4, network.Version5, network.Version6:
+	case network.Version4, network.Version5, network.Version6, network.Version7, network.Version8:
 		return Version2
 	default:
 		panic(fmt.Sprintf("unsupported network version %d", version))
diff --git a/chain/gen/genesis/miners.go b/chain/gen/genesis/miners.go
index be83a8711..850c2f39f 100644
--- a/chain/gen/genesis/miners.go
+++ b/chain/gen/genesis/miners.go
@@ -23,8 +23,6 @@ import (
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/go-state-types/crypto"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
-
 	builtin0 "github.com/filecoin-project/specs-actors/actors/builtin"
 	miner0 "github.com/filecoin-project/specs-actors/actors/builtin/miner"
 	power0 "github.com/filecoin-project/specs-actors/actors/builtin/power"
@@ -101,7 +99,7 @@ func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sroot cid.Cid
 		i := i
 		m := m
 
-		spt, err := ffiwrapper.SealProofTypeFromSectorSize(m.SectorSize)
+		spt, err := miner.SealProofTypeFromSectorSize(m.SectorSize, GenesisNetworkVersion)
 		if err != nil {
 			return cid.Undef, err
 		}
diff --git a/chain/stmgr/forks.go b/chain/stmgr/forks.go
index 15b0b369a..97c4ce401 100644
--- a/chain/stmgr/forks.go
+++ b/chain/stmgr/forks.go
@@ -97,6 +97,10 @@ func DefaultUpgradeSchedule() UpgradeSchedule {
 		Height:    build.UpgradeCalicoHeight,
 		Network:   network.Version7,
 		Migration: UpgradeCalico,
+	}, {
+		Height:    build.UpgradePersianHeight,
+		Network:   network.Version8,
+		Migration: nil,
 	}}
 
 	if build.UpgradeActorsV2Height == math.MaxInt64 { // disable actors upgrade
@@ -661,20 +665,27 @@ func UpgradeLiftoff(ctx context.Context, sm *StateManager, cb ExecCallback, root
 
 func UpgradeCalico(ctx context.Context, sm *StateManager, cb ExecCallback, root cid.Cid, epoch abi.ChainEpoch, ts *types.TipSet) (cid.Cid, error) {
 	store := sm.cs.Store(ctx)
-	info, err := store.Put(ctx, new(types.StateInfo0))
-	if err != nil {
-		return cid.Undef, xerrors.Errorf("failed to create new state info for actors v2: %w", err)
+	var stateRoot types.StateRoot
+	if err := store.Get(ctx, root, &stateRoot); err != nil {
+		return cid.Undef, xerrors.Errorf("failed to decode state root: %w", err)
 	}
 
-	newHamtRoot, err := nv7.MigrateStateTree(ctx, store, root, epoch, nv7.DefaultConfig())
+	if stateRoot.Version != types.StateTreeVersion1 {
+		return cid.Undef, xerrors.Errorf(
+			"expected state root version 1 for calico upgrade, got %d",
+			stateRoot.Version,
+		)
+	}
+
+	newHamtRoot, err := nv7.MigrateStateTree(ctx, store, stateRoot.Actors, epoch, nv7.DefaultConfig())
 	if err != nil {
 		return cid.Undef, xerrors.Errorf("running nv7 migration: %w", err)
 	}
 
 	newRoot, err := store.Put(ctx, &types.StateRoot{
-		Version: types.StateTreeVersion1,
+		Version: stateRoot.Version,
 		Actors:  newHamtRoot,
-		Info:    info,
+		Info:    stateRoot.Info,
 	})
 	if err != nil {
 		return cid.Undef, xerrors.Errorf("failed to persist new state root: %w", err)
diff --git a/chain/stmgr/utils.go b/chain/stmgr/utils.go
index 19fb5f35b..fb0b91378 100644
--- a/chain/stmgr/utils.go
+++ b/chain/stmgr/utils.go
@@ -207,12 +207,7 @@ func GetSectorsForWinningPoSt(ctx context.Context, nv network.Version, pv ffiwra
 		return nil, xerrors.Errorf("getting miner info: %w", err)
 	}
 
-	spt, err := ffiwrapper.SealProofTypeFromSectorSize(info.SectorSize)
-	if err != nil {
-		return nil, xerrors.Errorf("getting seal proof type: %w", err)
-	}
-
-	wpt, err := spt.RegisteredWinningPoStProof()
+	wpt, err := info.SealProofType.RegisteredWinningPoStProof()
 	if err != nil {
 		return nil, xerrors.Errorf("getting window proof type: %w", err)
 	}
@@ -252,7 +247,7 @@ func GetSectorsForWinningPoSt(ctx context.Context, nv network.Version, pv ffiwra
 	out := make([]builtin.SectorInfo, len(sectors))
 	for i, sinfo := range sectors {
 		out[i] = builtin.SectorInfo{
-			SealProof:    spt,
+			SealProof:    sinfo.SealProof,
 			SectorNumber: sinfo.SectorNumber,
 			SealedCID:    sinfo.SealedCID,
 		}
diff --git a/cmd/lotus-bench/main.go b/cmd/lotus-bench/main.go
index 1af5c1c62..f502e429c 100644
--- a/cmd/lotus-bench/main.go
+++ b/cmd/lotus-bench/main.go
@@ -31,6 +31,7 @@ import (
 
 	lapi "github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 	"github.com/filecoin-project/lotus/chain/actors/policy"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/genesis"
@@ -211,15 +212,6 @@ var sealBenchCmd = &cli.Command{
 		}
 		sectorSize := abi.SectorSize(sectorSizeInt)
 
-		spt, err := ffiwrapper.SealProofTypeFromSectorSize(sectorSize)
-		if err != nil {
-			return err
-		}
-
-		cfg := &ffiwrapper.Config{
-			SealProofType: spt,
-		}
-
 		// Only fetch parameters if actually needed
 		if !c.Bool("skip-commit2") {
 			if err := paramfetch.GetParams(lcli.ReqContext(c), build.ParametersJSON(), uint64(sectorSize)); err != nil {
@@ -231,7 +223,7 @@ var sealBenchCmd = &cli.Command{
 			Root: sbdir,
 		}
 
-		sb, err := ffiwrapper.New(sbfs, cfg)
+		sb, err := ffiwrapper.New(sbfs)
 		if err != nil {
 			return err
 		}
@@ -295,7 +287,7 @@ var sealBenchCmd = &cli.Command{
 
 		if !c.Bool("skip-commit2") {
 			log.Info("generating winning post candidates")
-			wipt, err := spt.RegisteredWinningPoStProof()
+			wipt, err := spt(sectorSize).RegisteredWinningPoStProof()
 			if err != nil {
 				return err
 			}
@@ -428,7 +420,7 @@ var sealBenchCmd = &cli.Command{
 
 			fmt.Println(string(data))
 		} else {
-			fmt.Printf("----\nresults (v27) (%d)\n", sectorSize)
+			fmt.Printf("----\nresults (v28) (%d)\n", sectorSize)
 			if robench == "" {
 				fmt.Printf("seal: addPiece: %s (%s)\n", bo.SealingResults[0].AddPiece, bps(bo.SectorSize, bo.SealingResults[0].AddPiece)) // TODO: average across multiple sealings
 				fmt.Printf("seal: preCommit phase 1: %s (%s)\n", bo.SealingResults[0].PreCommit1, bps(bo.SectorSize, bo.SealingResults[0].PreCommit1))
@@ -477,9 +469,12 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 	}
 
 	for i := abi.SectorNumber(1); i <= abi.SectorNumber(numSectors); i++ {
-		sid := abi.SectorID{
-			Miner:  mid,
-			Number: i,
+		sid := storage.SectorRef{
+			ID: abi.SectorID{
+				Miner:  mid,
+				Number: i,
+			},
+			ProofType: spt(sectorSize),
 		}
 
 		start := time.Now()
@@ -507,9 +502,12 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 				end := start + sectorsPerWorker
 				for i := abi.SectorNumber(start); i < abi.SectorNumber(end); i++ {
 					ix := int(i - 1)
-					sid := abi.SectorID{
-						Miner:  mid,
-						Number: i,
+					sid := storage.SectorRef{
+						ID: abi.SectorID{
+							Miner:  mid,
+							Number: i,
+						},
+						ProofType: spt(sectorSize),
 					}
 
 					start := time.Now()
@@ -538,7 +536,7 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 					<-preCommit2Sema
 
 					sealedSectors[ix] = saproof2.SectorInfo{
-						SealProof:    sb.SealProofType(),
+						SealProof:    sid.ProofType,
 						SectorNumber: i,
 						SealedCID:    cids.Sealed,
 					}
@@ -592,7 +590,7 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 						svi := saproof2.SealVerifyInfo{
 							SectorID:              abi.SectorID{Miner: mid, Number: i},
 							SealedCID:             cids.Sealed,
-							SealProof:             sb.SealProofType(),
+							SealProof:             sid.ProofType,
 							Proof:                 proof,
 							DealIDs:               nil,
 							Randomness:            ticket,
@@ -614,7 +612,7 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 					if !skipunseal {
 						log.Infof("[%d] Unsealing sector", i)
 						{
-							p, done, err := sbfs.AcquireSector(context.TODO(), abi.SectorID{Miner: mid, Number: 1}, storiface.FTUnsealed, storiface.FTNone, storiface.PathSealing)
+							p, done, err := sbfs.AcquireSector(context.TODO(), sid, storiface.FTUnsealed, storiface.FTNone, storiface.PathSealing)
 							if err != nil {
 								return xerrors.Errorf("acquire unsealed sector for removing: %w", err)
 							}
@@ -625,7 +623,7 @@ func runSeals(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, numSectors int, par
 							}
 						}
 
-						err := sb.UnsealPiece(context.TODO(), abi.SectorID{Miner: mid, Number: 1}, 0, abi.PaddedPieceSize(sectorSize).Unpadded(), ticket, cids.Unsealed)
+						err := sb.UnsealPiece(context.TODO(), sid, 0, abi.PaddedPieceSize(sectorSize).Unpadded(), ticket, cids.Unsealed)
 						if err != nil {
 							return err
 						}
@@ -708,23 +706,22 @@ var proveCmd = &cli.Command{
 			return err
 		}
 
-		spt, err := ffiwrapper.SealProofTypeFromSectorSize(abi.SectorSize(c2in.SectorSize))
-		if err != nil {
-			return err
-		}
-
-		cfg := &ffiwrapper.Config{
-			SealProofType: spt,
-		}
-
-		sb, err := ffiwrapper.New(nil, cfg)
+		sb, err := ffiwrapper.New(nil)
 		if err != nil {
 			return err
 		}
 
 		start := time.Now()
 
-		proof, err := sb.SealCommit2(context.TODO(), abi.SectorID{Miner: abi.ActorID(mid), Number: abi.SectorNumber(c2in.SectorNum)}, c2in.Phase1Out)
+		ref := storage.SectorRef{
+			ID: abi.SectorID{
+				Miner:  abi.ActorID(mid),
+				Number: abi.SectorNumber(c2in.SectorNum),
+			},
+			ProofType: spt(abi.SectorSize(c2in.SectorSize)),
+		}
+
+		proof, err := sb.SealCommit2(context.TODO(), ref, c2in.Phase1Out)
 		if err != nil {
 			return err
 		}
@@ -733,7 +730,7 @@ var proveCmd = &cli.Command{
 
 		fmt.Printf("proof: %x\n", proof)
 
-		fmt.Printf("----\nresults (v27) (%d)\n", c2in.SectorSize)
+		fmt.Printf("----\nresults (v28) (%d)\n", c2in.SectorSize)
 		dur := sealCommit2.Sub(start)
 
 		fmt.Printf("seal: commit phase 2: %s (%s)\n", dur, bps(abi.SectorSize(c2in.SectorSize), dur))
@@ -747,3 +744,12 @@ func bps(data abi.SectorSize, d time.Duration) string {
 	bps := bdata.Div(bdata, big.NewInt(d.Nanoseconds()))
 	return types.SizeStr(types.BigInt{Int: bps}) + "/s"
 }
+
+func spt(ssize abi.SectorSize) abi.RegisteredSealProof {
+	spt, err := miner.SealProofTypeFromSectorSize(ssize, build.NewestNetworkVersion)
+	if err != nil {
+		panic(err)
+	}
+
+	return spt
+}
diff --git a/cmd/lotus-seal-worker/main.go b/cmd/lotus-seal-worker/main.go
index 520964867..1f20bffbd 100644
--- a/cmd/lotus-seal-worker/main.go
+++ b/cmd/lotus-seal-worker/main.go
@@ -32,7 +32,6 @@ import (
 	"github.com/filecoin-project/lotus/build"
 	lcli "github.com/filecoin-project/lotus/cli"
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/sealtasks"
 	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
 	"github.com/filecoin-project/lotus/lib/lotuslog"
@@ -356,11 +355,6 @@ var runCmd = &cli.Command{
 		}
 
 		// Setup remote sector store
-		spt, err := ffiwrapper.SealProofTypeFromSectorSize(ssize)
-		if err != nil {
-			return xerrors.Errorf("getting proof type: %w", err)
-		}
-
 		sminfo, err := lcli.GetAPIInfo(cctx, repo.StorageMiner)
 		if err != nil {
 			return xerrors.Errorf("could not get api info: %w", err)
@@ -374,7 +368,6 @@ var runCmd = &cli.Command{
 
 		workerApi := &worker{
 			LocalWorker: sectorstorage.NewLocalWorker(sectorstorage.WorkerConfig{
-				SealProof: spt,
 				TaskTypes: taskTypes,
 				NoSwap:    cctx.Bool("no-swap"),
 			}, remote, localStore, nodeApi, nodeApi, wsts),
diff --git a/cmd/lotus-seed/main.go b/cmd/lotus-seed/main.go
index d365f6493..7822900e4 100644
--- a/cmd/lotus-seed/main.go
+++ b/cmd/lotus-seed/main.go
@@ -8,8 +8,6 @@ import (
 	"os"
 
 	"github.com/docker/go-units"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
-
 	logging "github.com/ipfs/go-log/v2"
 	"github.com/mitchellh/go-homedir"
 	"github.com/urfave/cli/v2"
@@ -19,6 +17,7 @@ import (
 	"github.com/filecoin-project/go-state-types/big"
 
 	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/cmd/lotus-seed/seed"
 	"github.com/filecoin-project/lotus/genesis"
@@ -128,12 +127,12 @@ var preSealCmd = &cli.Command{
 		}
 		sectorSize := abi.SectorSize(sectorSizeInt)
 
-		rp, err := ffiwrapper.SealProofTypeFromSectorSize(sectorSize)
+		spt, err := miner.SealProofTypeFromSectorSize(sectorSize, build.NewestNetworkVersion)
 		if err != nil {
 			return err
 		}
 
-		gm, key, err := seed.PreSeal(maddr, rp, abi.SectorNumber(c.Uint64("sector-offset")), c.Int("num-sectors"), sbroot, []byte(c.String("ticket-preimage")), k, c.Bool("fake-sectors"))
+		gm, key, err := seed.PreSeal(maddr, spt, abi.SectorNumber(c.Uint64("sector-offset")), c.Int("num-sectors"), sbroot, []byte(c.String("ticket-preimage")), k, c.Bool("fake-sectors"))
 		if err != nil {
 			return err
 		}
diff --git a/cmd/lotus-seed/seed/seed.go b/cmd/lotus-seed/seed/seed.go
index ab8e5a52a..b52490928 100644
--- a/cmd/lotus-seed/seed/seed.go
+++ b/cmd/lotus-seed/seed/seed.go
@@ -22,6 +22,7 @@ import (
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/lotus/extern/sector-storage/zerocomm"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	market2 "github.com/filecoin-project/specs-actors/v2/actors/builtin/market"
 
@@ -42,10 +43,6 @@ func PreSeal(maddr address.Address, spt abi.RegisteredSealProof, offset abi.Sect
 		return nil, nil, err
 	}
 
-	cfg := &ffiwrapper.Config{
-		SealProofType: spt,
-	}
-
 	if err := os.MkdirAll(sbroot, 0775); err != nil { //nolint:gosec
 		return nil, nil, err
 	}
@@ -56,7 +53,7 @@ func PreSeal(maddr address.Address, spt abi.RegisteredSealProof, offset abi.Sect
 		Root: sbroot,
 	}
 
-	sb, err := ffiwrapper.New(sbfs, cfg)
+	sb, err := ffiwrapper.New(sbfs)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -69,16 +66,17 @@ func PreSeal(maddr address.Address, spt abi.RegisteredSealProof, offset abi.Sect
 	var sealedSectors []*genesis.PreSeal
 	for i := 0; i < sectors; i++ {
 		sid := abi.SectorID{Miner: abi.ActorID(mid), Number: next}
+		ref := storage.SectorRef{ID: sid, ProofType: spt}
 		next++
 
 		var preseal *genesis.PreSeal
 		if !fakeSectors {
-			preseal, err = presealSector(sb, sbfs, sid, spt, ssize, preimage)
+			preseal, err = presealSector(sb, sbfs, ref, ssize, preimage)
 			if err != nil {
 				return nil, nil, err
 			}
 		} else {
-			preseal, err = presealSectorFake(sbfs, sid, spt, ssize)
+			preseal, err = presealSectorFake(sbfs, ref, ssize)
 			if err != nil {
 				return nil, nil, err
 			}
@@ -148,7 +146,7 @@ func PreSeal(maddr address.Address, spt abi.RegisteredSealProof, offset abi.Sect
 	return miner, &minerAddr.KeyInfo, nil
 }
 
-func presealSector(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, sid abi.SectorID, spt abi.RegisteredSealProof, ssize abi.SectorSize, preimage []byte) (*genesis.PreSeal, error) {
+func presealSector(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, sid storage.SectorRef, ssize abi.SectorSize, preimage []byte) (*genesis.PreSeal, error) {
 	pi, err := sb.AddPiece(context.TODO(), sid, nil, abi.PaddedPieceSize(ssize).Unpadded(), rand.Reader)
 	if err != nil {
 		return nil, err
@@ -182,12 +180,12 @@ func presealSector(sb *ffiwrapper.Sealer, sbfs *basicfs.Provider, sid abi.Sector
 	return &genesis.PreSeal{
 		CommR:     cids.Sealed,
 		CommD:     cids.Unsealed,
-		SectorID:  sid.Number,
-		ProofType: spt,
+		SectorID:  sid.ID.Number,
+		ProofType: sid.ProofType,
 	}, nil
 }
 
-func presealSectorFake(sbfs *basicfs.Provider, sid abi.SectorID, spt abi.RegisteredSealProof, ssize abi.SectorSize) (*genesis.PreSeal, error) {
+func presealSectorFake(sbfs *basicfs.Provider, sid storage.SectorRef, ssize abi.SectorSize) (*genesis.PreSeal, error) {
 	paths, done, err := sbfs.AcquireSector(context.TODO(), sid, 0, storiface.FTSealed|storiface.FTCache, storiface.PathSealing)
 	if err != nil {
 		return nil, xerrors.Errorf("acquire unsealed sector: %w", err)
@@ -198,7 +196,7 @@ func presealSectorFake(sbfs *basicfs.Provider, sid abi.SectorID, spt abi.Registe
 		return nil, xerrors.Errorf("mkdir cache: %w", err)
 	}
 
-	commr, err := ffi.FauxRep(spt, paths.Cache, paths.Sealed)
+	commr, err := ffi.FauxRep(sid.ProofType, paths.Cache, paths.Sealed)
 	if err != nil {
 		return nil, xerrors.Errorf("fauxrep: %w", err)
 	}
@@ -206,13 +204,13 @@ func presealSectorFake(sbfs *basicfs.Provider, sid abi.SectorID, spt abi.Registe
 	return &genesis.PreSeal{
 		CommR:     commr,
 		CommD:     zerocomm.ZeroPieceCommitment(abi.PaddedPieceSize(ssize).Unpadded()),
-		SectorID:  sid.Number,
-		ProofType: spt,
+		SectorID:  sid.ID.Number,
+		ProofType: sid.ProofType,
 	}, nil
 }
 
-func cleanupUnsealed(sbfs *basicfs.Provider, sid abi.SectorID) error {
-	paths, done, err := sbfs.AcquireSector(context.TODO(), sid, storiface.FTUnsealed, storiface.FTNone, storiface.PathSealing)
+func cleanupUnsealed(sbfs *basicfs.Provider, ref storage.SectorRef) error {
+	paths, done, err := sbfs.AcquireSector(context.TODO(), ref, storiface.FTUnsealed, storiface.FTNone, storiface.PathSealing)
 	if err != nil {
 		return err
 	}
diff --git a/cmd/lotus-storage-miner/actor_test.go b/cmd/lotus-storage-miner/actor_test.go
index 949171699..2aea6bda9 100644
--- a/cmd/lotus-storage-miner/actor_test.go
+++ b/cmd/lotus-storage-miner/actor_test.go
@@ -50,7 +50,7 @@ func TestWorkerKeyChange(t *testing.T) {
 
 	blocktime := 1 * time.Millisecond
 
-	n, sn := builder.MockSbBuilder(t, []test.FullNodeOpts{test.FullNodeWithUpgradeAt(1), test.FullNodeWithUpgradeAt(1)}, test.OneMiner)
+	n, sn := builder.MockSbBuilder(t, []test.FullNodeOpts{test.FullNodeWithActorsV2At(1), test.FullNodeWithActorsV2At(1)}, test.OneMiner)
 
 	client1 := n[0]
 	client2 := n[1]
diff --git a/cmd/lotus-storage-miner/init.go b/cmd/lotus-storage-miner/init.go
index a7fcd722a..008b2ea15 100644
--- a/cmd/lotus-storage-miner/init.go
+++ b/cmd/lotus-storage-miner/init.go
@@ -433,11 +433,6 @@ func storageMinerInit(ctx context.Context, cctx *cli.Context, api lapi.FullNode,
 				return err
 			}
 
-			spt, err := ffiwrapper.SealProofTypeFromSectorSize(ssize)
-			if err != nil {
-				return err
-			}
-
 			mid, err := address.IDFromAddress(a)
 			if err != nil {
 				return xerrors.Errorf("getting id address: %w", err)
@@ -451,9 +446,7 @@ func storageMinerInit(ctx context.Context, cctx *cli.Context, api lapi.FullNode,
 			wsts := statestore.New(namespace.Wrap(mds, modules.WorkerCallsPrefix))
 			smsts := statestore.New(namespace.Wrap(mds, modules.ManagerWorkPrefix))
 
-			smgr, err := sectorstorage.New(ctx, lr, stores.NewIndex(), &ffiwrapper.Config{
-				SealProofType: spt,
-			}, sectorstorage.SealerConfig{
+			smgr, err := sectorstorage.New(ctx, lr, stores.NewIndex(), sectorstorage.SealerConfig{
 				ParallelFetchLimit: 10,
 				AllowAddPiece:      true,
 				AllowPreCommit1:    true,
@@ -657,9 +650,14 @@ func createStorageMiner(ctx context.Context, api lapi.FullNode, peerid peer.ID,
 		}
 	}
 
-	spt, err := ffiwrapper.SealProofTypeFromSectorSize(abi.SectorSize(ssize))
+	nv, err := api.StateNetworkVersion(ctx, types.EmptyTSK)
 	if err != nil {
-		return address.Undef, err
+		return address.Undef, xerrors.Errorf("getting network version: %w", err)
+	}
+
+	spt, err := miner.SealProofTypeFromSectorSize(abi.SectorSize(ssize), nv)
+	if err != nil {
+		return address.Undef, xerrors.Errorf("getting seal proof type: %w", err)
 	}
 
 	params, err := actors.SerializeParams(&power2.CreateMinerParams{
diff --git a/documentation/en/api-methods-miner.md b/documentation/en/api-methods-miner.md
index e8c4d802c..a805777b5 100644
--- a/documentation/en/api-methods-miner.md
+++ b/documentation/en/api-methods-miner.md
@@ -1422,7 +1422,7 @@ Response:
   "ToUpgrade": true,
   "LastErr": "string value",
   "Log": null,
-  "SealProof": 3,
+  "SealProof": 8,
   "Activation": 10101,
   "Expiration": 10101,
   "DealWeight": "0",
diff --git a/documentation/en/api-methods-worker.md b/documentation/en/api-methods-worker.md
index 62b6d175c..3f04ae85a 100644
--- a/documentation/en/api-methods-worker.md
+++ b/documentation/en/api-methods-worker.md
@@ -55,8 +55,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   1,
   "sealing",
@@ -155,8 +158,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null,
   1024,
@@ -187,8 +193,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null
 ]
@@ -217,8 +226,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   1
 ]
@@ -262,8 +274,11 @@ Inputs:
 [
   {},
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   1040384,
   1024
@@ -293,8 +308,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null
 ]
@@ -323,8 +341,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null,
   null,
@@ -360,8 +381,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null
 ]
@@ -387,8 +411,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null,
   null
@@ -415,8 +442,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   null
 ]
@@ -499,8 +529,11 @@ Inputs:
 ```json
 [
   {
-    "Miner": 1000,
-    "Number": 9
+    "ID": {
+      "Miner": 1000,
+      "Number": 9
+    },
+    "ProofType": 8
   },
   1040384,
   1024,
diff --git a/documentation/en/api-methods.md b/documentation/en/api-methods.md
index 8947d8d5f..375f2c690 100644
--- a/documentation/en/api-methods.md
+++ b/documentation/en/api-methods.md
@@ -3874,7 +3874,7 @@ Response:
   "WorkerChangeEpoch": 10101,
   "PeerId": "12D3KooWGzxzKZYveHXtpG6AsrUJBcWxHBFS2HsEoGTxrMLvKXtf",
   "Multiaddrs": null,
-  "SealProofType": 3,
+  "SealProofType": 8,
   "SectorSize": 34359738368,
   "WindowPoStPartitionSectors": 42,
   "ConsensusFaultElapsed": 10101
@@ -3892,7 +3892,7 @@ Inputs:
 [
   "f01234",
   {
-    "SealProof": 3,
+    "SealProof": 8,
     "SectorNumber": 9,
     "SealedCID": {
       "/": "bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4"
@@ -3989,7 +3989,7 @@ Inputs:
 [
   "f01234",
   {
-    "SealProof": 3,
+    "SealProof": 8,
     "SectorNumber": 9,
     "SealedCID": {
       "/": "bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4"
@@ -4194,7 +4194,7 @@ Inputs:
 ]
 ```
 
-Response: `6`
+Response: `8`
 
 ### StateReadState
 StateReadState returns the indicated actor's state.
@@ -4415,7 +4415,7 @@ Response:
 ```json
 {
   "SectorNumber": 9,
-  "SealProof": 3,
+  "SealProof": 8,
   "SealedCID": {
     "/": "bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4"
   },
@@ -4486,7 +4486,7 @@ Response:
 ```json
 {
   "Info": {
-    "SealProof": 3,
+    "SealProof": 8,
     "SectorNumber": 9,
     "SealedCID": {
       "/": "bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4"
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 198527554..1d9cb3e8f 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 1985275547f222e8c97a8ab70b5cc26bc1fa50b1
+Subproject commit 1d9cb3e8ff53f51f9318fc57e5d00bc79bdc0128
diff --git a/extern/sector-storage/faults.go b/extern/sector-storage/faults.go
index c4e1364ad..6f0dcfa13 100644
--- a/extern/sector-storage/faults.go
+++ b/extern/sector-storage/faults.go
@@ -9,17 +9,18 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 )
 
 // FaultTracker TODO: Track things more actively
 type FaultTracker interface {
-	CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []abi.SectorID) ([]abi.SectorID, error)
+	CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []storage.SectorRef) ([]abi.SectorID, error)
 }
 
 // CheckProvable returns unprovable sectors
-func (m *Manager) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []abi.SectorID) ([]abi.SectorID, error) {
+func (m *Manager) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []storage.SectorRef) ([]abi.SectorID, error) {
 	var bad []abi.SectorID
 
 	ssize, err := pp.SectorSize()
@@ -33,27 +34,27 @@ func (m *Manager) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof,
 			ctx, cancel := context.WithCancel(ctx)
 			defer cancel()
 
-			locked, err := m.index.StorageTryLock(ctx, sector, storiface.FTSealed|storiface.FTCache, storiface.FTNone)
+			locked, err := m.index.StorageTryLock(ctx, sector.ID, storiface.FTSealed|storiface.FTCache, storiface.FTNone)
 			if err != nil {
 				return xerrors.Errorf("acquiring sector lock: %w", err)
 			}
 
 			if !locked {
 				log.Warnw("CheckProvable Sector FAULT: can't acquire read lock", "sector", sector, "sealed")
-				bad = append(bad, sector)
+				bad = append(bad, sector.ID)
 				return nil
 			}
 
-			lp, _, err := m.localStore.AcquireSector(ctx, sector, ssize, storiface.FTSealed|storiface.FTCache, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
+			lp, _, err := m.localStore.AcquireSector(ctx, sector, storiface.FTSealed|storiface.FTCache, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
 			if err != nil {
 				log.Warnw("CheckProvable Sector FAULT: acquire sector in checkProvable", "sector", sector, "error", err)
-				bad = append(bad, sector)
+				bad = append(bad, sector.ID)
 				return nil
 			}
 
 			if lp.Sealed == "" || lp.Cache == "" {
 				log.Warnw("CheckProvable Sector FAULT: cache an/or sealed paths not found", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache)
-				bad = append(bad, sector)
+				bad = append(bad, sector.ID)
 				return nil
 			}
 
@@ -69,14 +70,14 @@ func (m *Manager) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof,
 				st, err := os.Stat(p)
 				if err != nil {
 					log.Warnw("CheckProvable Sector FAULT: sector file stat error", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache, "file", p, "err", err)
-					bad = append(bad, sector)
+					bad = append(bad, sector.ID)
 					return nil
 				}
 
 				if sz != 0 {
 					if st.Size() != int64(ssize)*sz {
 						log.Warnw("CheckProvable Sector FAULT: sector file is wrong size", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache, "file", p, "size", st.Size(), "expectSize", int64(ssize)*sz)
-						bad = append(bad, sector)
+						bad = append(bad, sector.ID)
 						return nil
 					}
 				}
diff --git a/extern/sector-storage/ffiwrapper/basicfs/fs.go b/extern/sector-storage/ffiwrapper/basicfs/fs.go
index 7ae303d9c..a833f728c 100644
--- a/extern/sector-storage/ffiwrapper/basicfs/fs.go
+++ b/extern/sector-storage/ffiwrapper/basicfs/fs.go
@@ -7,6 +7,7 @@ import (
 	"sync"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 )
@@ -23,7 +24,7 @@ type Provider struct {
 	waitSector map[sectorFile]chan struct{}
 }
 
-func (b *Provider) AcquireSector(ctx context.Context, id abi.SectorID, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error) {
+func (b *Provider) AcquireSector(ctx context.Context, id storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error) {
 	if err := os.Mkdir(filepath.Join(b.Root, storiface.FTUnsealed.String()), 0755); err != nil && !os.IsExist(err) { // nolint
 		return storiface.SectorPaths{}, nil, err
 	}
@@ -37,7 +38,7 @@ func (b *Provider) AcquireSector(ctx context.Context, id abi.SectorID, existing
 	done := func() {}
 
 	out := storiface.SectorPaths{
-		ID: id,
+		ID: id.ID,
 	}
 
 	for _, fileType := range storiface.PathTypes {
@@ -49,10 +50,10 @@ func (b *Provider) AcquireSector(ctx context.Context, id abi.SectorID, existing
 		if b.waitSector == nil {
 			b.waitSector = map[sectorFile]chan struct{}{}
 		}
-		ch, found := b.waitSector[sectorFile{id, fileType}]
+		ch, found := b.waitSector[sectorFile{id.ID, fileType}]
 		if !found {
 			ch = make(chan struct{}, 1)
-			b.waitSector[sectorFile{id, fileType}] = ch
+			b.waitSector[sectorFile{id.ID, fileType}] = ch
 		}
 		b.lk.Unlock()
 
@@ -63,7 +64,7 @@ func (b *Provider) AcquireSector(ctx context.Context, id abi.SectorID, existing
 			return storiface.SectorPaths{}, nil, ctx.Err()
 		}
 
-		path := filepath.Join(b.Root, fileType.String(), storiface.SectorName(id))
+		path := filepath.Join(b.Root, fileType.String(), storiface.SectorName(id.ID))
 
 		prevDone := done
 		done = func() {
diff --git a/extern/sector-storage/ffiwrapper/config.go b/extern/sector-storage/ffiwrapper/config.go
deleted file mode 100644
index ca32b1191..000000000
--- a/extern/sector-storage/ffiwrapper/config.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package ffiwrapper
-
-import (
-	"golang.org/x/xerrors"
-
-	"github.com/filecoin-project/go-state-types/abi"
-)
-
-type Config struct {
-	SealProofType abi.RegisteredSealProof
-
-	_ struct{} // guard against nameless init
-}
-
-func sizeFromConfig(cfg Config) (abi.SectorSize, error) {
-	return cfg.SealProofType.SectorSize()
-}
-
-func SealProofTypeFromSectorSize(ssize abi.SectorSize) (abi.RegisteredSealProof, error) {
-	switch ssize {
-	case 2 << 10:
-		return abi.RegisteredSealProof_StackedDrg2KiBV1, nil
-	case 8 << 20:
-		return abi.RegisteredSealProof_StackedDrg8MiBV1, nil
-	case 512 << 20:
-		return abi.RegisteredSealProof_StackedDrg512MiBV1, nil
-	case 32 << 30:
-		return abi.RegisteredSealProof_StackedDrg32GiBV1, nil
-	case 64 << 30:
-		return abi.RegisteredSealProof_StackedDrg64GiBV1, nil
-	default:
-		return 0, xerrors.Errorf("unsupported sector size for miner: %v", ssize)
-	}
-}
diff --git a/extern/sector-storage/ffiwrapper/sealer.go b/extern/sector-storage/ffiwrapper/sealer.go
index c1b558d9a..39cb8fa1b 100644
--- a/extern/sector-storage/ffiwrapper/sealer.go
+++ b/extern/sector-storage/ffiwrapper/sealer.go
@@ -1,16 +1,12 @@
 package ffiwrapper
 
 import (
-	"github.com/filecoin-project/go-state-types/abi"
 	logging "github.com/ipfs/go-log/v2"
 )
 
 var log = logging.Logger("ffiwrapper")
 
 type Sealer struct {
-	sealProofType abi.RegisteredSealProof
-	ssize         abi.SectorSize // a function of sealProofType and postProofType
-
 	sectors  SectorProvider
 	stopping chan struct{}
 }
@@ -18,11 +14,3 @@ type Sealer struct {
 func (sb *Sealer) Stop() {
 	close(sb.stopping)
 }
-
-func (sb *Sealer) SectorSize() abi.SectorSize {
-	return sb.ssize
-}
-
-func (sb *Sealer) SealProofType() abi.RegisteredSealProof {
-	return sb.sealProofType
-}
diff --git a/extern/sector-storage/ffiwrapper/sealer_cgo.go b/extern/sector-storage/ffiwrapper/sealer_cgo.go
index b48b0bfd5..0887bc329 100644
--- a/extern/sector-storage/ffiwrapper/sealer_cgo.go
+++ b/extern/sector-storage/ffiwrapper/sealer_cgo.go
@@ -27,16 +27,8 @@ import (
 
 var _ Storage = &Sealer{}
 
-func New(sectors SectorProvider, cfg *Config) (*Sealer, error) {
-	sectorSize, err := sizeFromConfig(*cfg)
-	if err != nil {
-		return nil, err
-	}
-
+func New(sectors SectorProvider) (*Sealer, error) {
 	sb := &Sealer{
-		sealProofType: cfg.SealProofType,
-		ssize:         sectorSize,
-
 		sectors: sectors,
 
 		stopping: make(chan struct{}),
@@ -45,25 +37,29 @@ func New(sectors SectorProvider, cfg *Config) (*Sealer, error) {
 	return sb, nil
 }
 
-func (sb *Sealer) NewSector(ctx context.Context, sector abi.SectorID) error {
+func (sb *Sealer) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	// TODO: Allocate the sector here instead of in addpiece
 
 	return nil
 }
 
-func (sb *Sealer) AddPiece(ctx context.Context, sector abi.SectorID, existingPieceSizes []abi.UnpaddedPieceSize, pieceSize abi.UnpaddedPieceSize, file storage.Data) (abi.PieceInfo, error) {
+func (sb *Sealer) AddPiece(ctx context.Context, sector storage.SectorRef, existingPieceSizes []abi.UnpaddedPieceSize, pieceSize abi.UnpaddedPieceSize, file storage.Data) (abi.PieceInfo, error) {
 	var offset abi.UnpaddedPieceSize
 	for _, size := range existingPieceSizes {
 		offset += size
 	}
 
-	maxPieceSize := abi.PaddedPieceSize(sb.ssize)
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return abi.PieceInfo{}, err
+	}
+
+	maxPieceSize := abi.PaddedPieceSize(ssize)
 
 	if offset.Padded()+pieceSize.Padded() > maxPieceSize {
 		return abi.PieceInfo{}, xerrors.Errorf("can't add %d byte piece to sector %v with %d bytes of existing pieces", pieceSize, sector, offset)
 	}
 
-	var err error
 	var done func()
 	var stagedFile *partialFile
 
@@ -135,7 +131,7 @@ func (sb *Sealer) AddPiece(ctx context.Context, sector abi.SectorID, existingPie
 			break
 		}
 
-		c, err := sb.pieceCid(buf[:read])
+		c, err := sb.pieceCid(sector.ProofType, buf[:read])
 		if err != nil {
 			return abi.PieceInfo{}, xerrors.Errorf("pieceCid error: %w", err)
 		}
@@ -162,7 +158,7 @@ func (sb *Sealer) AddPiece(ctx context.Context, sector abi.SectorID, existingPie
 		return pieceCids[0], nil
 	}
 
-	pieceCID, err := ffi.GenerateUnsealedCID(sb.sealProofType, pieceCids)
+	pieceCID, err := ffi.GenerateUnsealedCID(sector.ProofType, pieceCids)
 	if err != nil {
 		return abi.PieceInfo{}, xerrors.Errorf("generate unsealed CID: %w", err)
 	}
@@ -178,13 +174,13 @@ func (sb *Sealer) AddPiece(ctx context.Context, sector abi.SectorID, existingPie
 	}, nil
 }
 
-func (sb *Sealer) pieceCid(in []byte) (cid.Cid, error) {
+func (sb *Sealer) pieceCid(spt abi.RegisteredSealProof, in []byte) (cid.Cid, error) {
 	prf, werr, err := ToReadableFile(bytes.NewReader(in), int64(len(in)))
 	if err != nil {
 		return cid.Undef, xerrors.Errorf("getting tee reader pipe: %w", err)
 	}
 
-	pieceCID, err := ffi.GeneratePieceCIDFromFile(sb.sealProofType, prf, abi.UnpaddedPieceSize(len(in)))
+	pieceCID, err := ffi.GeneratePieceCIDFromFile(spt, prf, abi.UnpaddedPieceSize(len(in)))
 	if err != nil {
 		return cid.Undef, xerrors.Errorf("generating piece commitment: %w", err)
 	}
@@ -194,8 +190,12 @@ func (sb *Sealer) pieceCid(in []byte) (cid.Cid, error) {
 	return pieceCID, werr()
 }
 
-func (sb *Sealer) UnsealPiece(ctx context.Context, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error {
-	maxPieceSize := abi.PaddedPieceSize(sb.ssize)
+func (sb *Sealer) UnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error {
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return err
+	}
+	maxPieceSize := abi.PaddedPieceSize(ssize)
 
 	// try finding existing
 	unsealedPath, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, storiface.FTNone, storiface.PathStorage)
@@ -317,12 +317,12 @@ func (sb *Sealer) UnsealPiece(ctx context.Context, sector abi.SectorID, offset s
 		// </eww>
 
 		// TODO: This may be possible to do in parallel
-		err = ffi.UnsealRange(sb.sealProofType,
+		err = ffi.UnsealRange(sector.ProofType,
 			srcPaths.Cache,
 			sealed,
 			opw,
-			sector.Number,
-			sector.Miner,
+			sector.ID.Number,
+			sector.ID.Miner,
 			randomness,
 			commd,
 			uint64(at.Unpadded()),
@@ -356,14 +356,18 @@ func (sb *Sealer) UnsealPiece(ctx context.Context, sector abi.SectorID, offset s
 	return nil
 }
 
-func (sb *Sealer) ReadPiece(ctx context.Context, writer io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error) {
+func (sb *Sealer) ReadPiece(ctx context.Context, writer io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error) {
 	path, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, storiface.FTNone, storiface.PathStorage)
 	if err != nil {
 		return false, xerrors.Errorf("acquire unsealed sector path: %w", err)
 	}
 	defer done()
 
-	maxPieceSize := abi.PaddedPieceSize(sb.ssize)
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return false, err
+	}
+	maxPieceSize := abi.PaddedPieceSize(ssize)
 
 	pf, err := openPartialFile(maxPieceSize, path.Unsealed)
 	if err != nil {
@@ -408,7 +412,7 @@ func (sb *Sealer) ReadPiece(ctx context.Context, writer io.Writer, sector abi.Se
 	return true, nil
 }
 
-func (sb *Sealer) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
+func (sb *Sealer) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
 	paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, storiface.FTSealed|storiface.FTCache, storiface.PathSealing)
 	if err != nil {
 		return nil, xerrors.Errorf("acquiring sector paths: %w", err)
@@ -443,29 +447,33 @@ func (sb *Sealer) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticke
 	for _, piece := range pieces {
 		sum += piece.Size.Unpadded()
 	}
-	ussize := abi.PaddedPieceSize(sb.ssize).Unpadded()
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return nil, err
+	}
+	ussize := abi.PaddedPieceSize(ssize).Unpadded()
 	if sum != ussize {
 		return nil, xerrors.Errorf("aggregated piece sizes don't match sector size: %d != %d (%d)", sum, ussize, int64(ussize-sum))
 	}
 
 	// TODO: context cancellation respect
 	p1o, err := ffi.SealPreCommitPhase1(
-		sb.sealProofType,
+		sector.ProofType,
 		paths.Cache,
 		paths.Unsealed,
 		paths.Sealed,
-		sector.Number,
-		sector.Miner,
+		sector.ID.Number,
+		sector.ID.Miner,
 		ticket,
 		pieces,
 	)
 	if err != nil {
-		return nil, xerrors.Errorf("presealing sector %d (%s): %w", sector.Number, paths.Unsealed, err)
+		return nil, xerrors.Errorf("presealing sector %d (%s): %w", sector.ID.Number, paths.Unsealed, err)
 	}
 	return p1o, nil
 }
 
-func (sb *Sealer) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage.PreCommit1Out) (storage.SectorCids, error) {
+func (sb *Sealer) SealPreCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.PreCommit1Out) (storage.SectorCids, error) {
 	paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTSealed|storiface.FTCache, 0, storiface.PathSealing)
 	if err != nil {
 		return storage.SectorCids{}, xerrors.Errorf("acquiring sector paths: %w", err)
@@ -474,7 +482,7 @@ func (sb *Sealer) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase
 
 	sealedCID, unsealedCID, err := ffi.SealPreCommitPhase2(phase1Out, paths.Cache, paths.Sealed)
 	if err != nil {
-		return storage.SectorCids{}, xerrors.Errorf("presealing sector %d (%s): %w", sector.Number, paths.Unsealed, err)
+		return storage.SectorCids{}, xerrors.Errorf("presealing sector %d (%s): %w", sector.ID.Number, paths.Unsealed, err)
 	}
 
 	return storage.SectorCids{
@@ -483,40 +491,45 @@ func (sb *Sealer) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase
 	}, nil
 }
 
-func (sb *Sealer) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storage.Commit1Out, error) {
+func (sb *Sealer) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storage.Commit1Out, error) {
 	paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTSealed|storiface.FTCache, 0, storiface.PathSealing)
 	if err != nil {
 		return nil, xerrors.Errorf("acquire sector paths: %w", err)
 	}
 	defer done()
 	output, err := ffi.SealCommitPhase1(
-		sb.sealProofType,
+		sector.ProofType,
 		cids.Sealed,
 		cids.Unsealed,
 		paths.Cache,
 		paths.Sealed,
-		sector.Number,
-		sector.Miner,
+		sector.ID.Number,
+		sector.ID.Miner,
 		ticket,
 		seed,
 		pieces,
 	)
 	if err != nil {
 		log.Warn("StandaloneSealCommit error: ", err)
-		log.Warnf("num:%d tkt:%v seed:%v, pi:%v sealedCID:%v, unsealedCID:%v", sector.Number, ticket, seed, pieces, cids.Sealed, cids.Unsealed)
+		log.Warnf("num:%d tkt:%v seed:%v, pi:%v sealedCID:%v, unsealedCID:%v", sector.ID.Number, ticket, seed, pieces, cids.Sealed, cids.Unsealed)
 
 		return nil, xerrors.Errorf("StandaloneSealCommit: %w", err)
 	}
 	return output, nil
 }
 
-func (sb *Sealer) SealCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage.Commit1Out) (storage.Proof, error) {
-	return ffi.SealCommitPhase2(phase1Out, sector.Number, sector.Miner)
+func (sb *Sealer) SealCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.Commit1Out) (storage.Proof, error) {
+	return ffi.SealCommitPhase2(phase1Out, sector.ID.Number, sector.ID.Miner)
 }
 
-func (sb *Sealer) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) error {
+func (sb *Sealer) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) error {
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return err
+	}
+	maxPieceSize := abi.PaddedPieceSize(ssize)
+
 	if len(keepUnsealed) > 0 {
-		maxPieceSize := abi.PaddedPieceSize(sb.ssize)
 
 		sr := pieceRun(0, maxPieceSize)
 
@@ -580,10 +593,10 @@ func (sb *Sealer) FinalizeSector(ctx context.Context, sector abi.SectorID, keepU
 	}
 	defer done()
 
-	return ffi.ClearCache(uint64(sb.ssize), paths.Cache)
+	return ffi.ClearCache(uint64(ssize), paths.Cache)
 }
 
-func (sb *Sealer) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) error {
+func (sb *Sealer) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) error {
 	// This call is meant to mark storage as 'freeable'. Given that unsealing is
 	// very expensive, we don't remove data as soon as we can - instead we only
 	// do that when we don't have free space for data that really needs it
@@ -593,7 +606,7 @@ func (sb *Sealer) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safe
 	return xerrors.Errorf("not supported at this layer")
 }
 
-func (sb *Sealer) Remove(ctx context.Context, sector abi.SectorID) error {
+func (sb *Sealer) Remove(ctx context.Context, sector storage.SectorRef) error {
 	return xerrors.Errorf("not supported at this layer") // happens in localworker
 }
 
diff --git a/extern/sector-storage/ffiwrapper/sealer_test.go b/extern/sector-storage/ffiwrapper/sealer_test.go
index 5ae5cec67..686ef847b 100644
--- a/extern/sector-storage/ffiwrapper/sealer_test.go
+++ b/extern/sector-storage/ffiwrapper/sealer_test.go
@@ -43,7 +43,7 @@ var sectorSize, _ = sealProofType.SectorSize()
 var sealRand = abi.SealRandomness{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2}
 
 type seal struct {
-	id     abi.SectorID
+	ref    storage.SectorRef
 	cids   storage.SectorCids
 	pi     abi.PieceInfo
 	ticket abi.SealRandomness
@@ -56,12 +56,12 @@ func data(sn abi.SectorNumber, dlen abi.UnpaddedPieceSize) io.Reader {
 	)
 }
 
-func (s *seal) precommit(t *testing.T, sb *Sealer, id abi.SectorID, done func()) {
+func (s *seal) precommit(t *testing.T, sb *Sealer, id storage.SectorRef, done func()) {
 	defer done()
 	dlen := abi.PaddedPieceSize(sectorSize).Unpadded()
 
 	var err error
-	r := data(id.Number, dlen)
+	r := data(id.ID.Number, dlen)
 	s.pi, err = sb.AddPiece(context.TODO(), id, []abi.UnpaddedPieceSize{}, dlen, r)
 	if err != nil {
 		t.Fatalf("%+v", err)
@@ -84,19 +84,19 @@ func (s *seal) commit(t *testing.T, sb *Sealer, done func()) {
 	defer done()
 	seed := abi.InteractiveSealRandomness{0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 7, 6, 45, 3, 2, 1, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 9}
 
-	pc1, err := sb.SealCommit1(context.TODO(), s.id, s.ticket, seed, []abi.PieceInfo{s.pi}, s.cids)
+	pc1, err := sb.SealCommit1(context.TODO(), s.ref, s.ticket, seed, []abi.PieceInfo{s.pi}, s.cids)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
-	proof, err := sb.SealCommit2(context.TODO(), s.id, pc1)
+	proof, err := sb.SealCommit2(context.TODO(), s.ref, pc1)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
 
 	ok, err := ProofVerifier.VerifySeal(proof2.SealVerifyInfo{
-		SectorID:              s.id,
+		SectorID:              s.ref.ID,
 		SealedCID:             s.cids.Sealed,
-		SealProof:             sealProofType,
+		SealProof:             s.ref.ProofType,
 		Proof:                 proof,
 		Randomness:            s.ticket,
 		InteractiveRandomness: seed,
@@ -111,7 +111,7 @@ func (s *seal) commit(t *testing.T, sb *Sealer, done func()) {
 	}
 }
 
-func (s *seal) unseal(t *testing.T, sb *Sealer, sp *basicfs.Provider, si abi.SectorID, done func()) {
+func (s *seal) unseal(t *testing.T, sb *Sealer, sp *basicfs.Provider, si storage.SectorRef, done func()) {
 	defer done()
 
 	var b bytes.Buffer
@@ -120,7 +120,7 @@ func (s *seal) unseal(t *testing.T, sb *Sealer, sp *basicfs.Provider, si abi.Sec
 		t.Fatal(err)
 	}
 
-	expect, _ := ioutil.ReadAll(data(si.Number, 1016))
+	expect, _ := ioutil.ReadAll(data(si.ID.Number, 1016))
 	if !bytes.Equal(b.Bytes(), expect) {
 		t.Fatal("read wrong bytes")
 	}
@@ -150,7 +150,7 @@ func (s *seal) unseal(t *testing.T, sb *Sealer, sp *basicfs.Provider, si abi.Sec
 		t.Fatal(err)
 	}
 
-	expect, _ = ioutil.ReadAll(data(si.Number, 1016))
+	expect, _ = ioutil.ReadAll(data(si.ID.Number, 1016))
 	require.Equal(t, expect, b.Bytes())
 
 	b.Reset()
@@ -174,13 +174,13 @@ func post(t *testing.T, sealer *Sealer, skipped []abi.SectorID, seals ...seal) {
 	sis := make([]proof2.SectorInfo, len(seals))
 	for i, s := range seals {
 		sis[i] = proof2.SectorInfo{
-			SealProof:    sealProofType,
-			SectorNumber: s.id.Number,
+			SealProof:    s.ref.ProofType,
+			SectorNumber: s.ref.ID.Number,
 			SealedCID:    s.cids.Sealed,
 		}
 	}
 
-	proofs, skp, err := sealer.GenerateWindowPoSt(context.TODO(), seals[0].id.Miner, sis, randomness)
+	proofs, skp, err := sealer.GenerateWindowPoSt(context.TODO(), seals[0].ref.ID.Miner, sis, randomness)
 	if len(skipped) > 0 {
 		require.Error(t, err)
 		require.EqualValues(t, skipped, skp)
@@ -195,7 +195,7 @@ func post(t *testing.T, sealer *Sealer, skipped []abi.SectorID, seals ...seal) {
 		Randomness:        randomness,
 		Proofs:            proofs,
 		ChallengedSectors: sis,
-		Prover:            seals[0].id.Miner,
+		Prover:            seals[0].ref.ID.Miner,
 	})
 	if err != nil {
 		t.Fatalf("%+v", err)
@@ -205,7 +205,7 @@ func post(t *testing.T, sealer *Sealer, skipped []abi.SectorID, seals ...seal) {
 	}
 }
 
-func corrupt(t *testing.T, sealer *Sealer, id abi.SectorID) {
+func corrupt(t *testing.T, sealer *Sealer, id storage.SectorRef) {
 	paths, done, err := sealer.sectors.AcquireSector(context.Background(), id, storiface.FTSealed, 0, storiface.PathStorage)
 	require.NoError(t, err)
 	defer done()
@@ -264,14 +264,10 @@ func TestSealAndVerify(t *testing.T) {
 	}
 	miner := abi.ActorID(123)
 
-	cfg := &Config{
-		SealProofType: sealProofType,
-	}
-
 	sp := &basicfs.Provider{
 		Root: cdir,
 	}
-	sb, err := New(sp, cfg)
+	sb, err := New(sp)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
@@ -286,9 +282,12 @@ func TestSealAndVerify(t *testing.T) {
 	}
 	defer cleanup()
 
-	si := abi.SectorID{Miner: miner, Number: 1}
+	si := storage.SectorRef{
+		ID:        abi.SectorID{Miner: miner, Number: 1},
+		ProofType: sealProofType,
+	}
 
-	s := seal{id: si}
+	s := seal{ref: si}
 
 	start := time.Now()
 
@@ -338,13 +337,10 @@ func TestSealPoStNoCommit(t *testing.T) {
 
 	miner := abi.ActorID(123)
 
-	cfg := &Config{
-		SealProofType: sealProofType,
-	}
 	sp := &basicfs.Provider{
 		Root: dir,
 	}
-	sb, err := New(sp, cfg)
+	sb, err := New(sp)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
@@ -360,9 +356,12 @@ func TestSealPoStNoCommit(t *testing.T) {
 	}
 	defer cleanup()
 
-	si := abi.SectorID{Miner: miner, Number: 1}
+	si := storage.SectorRef{
+		ID:        abi.SectorID{Miner: miner, Number: 1},
+		ProofType: sealProofType,
+	}
 
-	s := seal{id: si}
+	s := seal{ref: si}
 
 	start := time.Now()
 
@@ -403,13 +402,10 @@ func TestSealAndVerify3(t *testing.T) {
 
 	miner := abi.ActorID(123)
 
-	cfg := &Config{
-		SealProofType: sealProofType,
-	}
 	sp := &basicfs.Provider{
 		Root: dir,
 	}
-	sb, err := New(sp, cfg)
+	sb, err := New(sp)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
@@ -424,13 +420,22 @@ func TestSealAndVerify3(t *testing.T) {
 
 	var wg sync.WaitGroup
 
-	si1 := abi.SectorID{Miner: miner, Number: 1}
-	si2 := abi.SectorID{Miner: miner, Number: 2}
-	si3 := abi.SectorID{Miner: miner, Number: 3}
+	si1 := storage.SectorRef{
+		ID:        abi.SectorID{Miner: miner, Number: 1},
+		ProofType: sealProofType,
+	}
+	si2 := storage.SectorRef{
+		ID:        abi.SectorID{Miner: miner, Number: 2},
+		ProofType: sealProofType,
+	}
+	si3 := storage.SectorRef{
+		ID:        abi.SectorID{Miner: miner, Number: 3},
+		ProofType: sealProofType,
+	}
 
-	s1 := seal{id: si1}
-	s2 := seal{id: si2}
-	s3 := seal{id: si3}
+	s1 := seal{ref: si1}
+	s2 := seal{ref: si2}
+	s3 := seal{ref: si3}
 
 	wg.Add(3)
 	go s1.precommit(t, sb, si1, wg.Done) //nolint: staticcheck
@@ -451,7 +456,7 @@ func TestSealAndVerify3(t *testing.T) {
 	corrupt(t, sb, si1)
 	corrupt(t, sb, si2)
 
-	post(t, sb, []abi.SectorID{si1, si2}, s1, s2, s3)
+	post(t, sb, []abi.SectorID{si1.ID, si2.ID}, s1, s2, s3)
 }
 
 func BenchmarkWriteWithAlignment(b *testing.B) {
diff --git a/extern/sector-storage/ffiwrapper/types.go b/extern/sector-storage/ffiwrapper/types.go
index b67f9c595..b7e96636a 100644
--- a/extern/sector-storage/ffiwrapper/types.go
+++ b/extern/sector-storage/ffiwrapper/types.go
@@ -29,8 +29,8 @@ type Storage interface {
 	storage.Prover
 	StorageSealer
 
-	UnsealPiece(ctx context.Context, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error
-	ReadPiece(ctx context.Context, writer io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error)
+	UnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error
+	ReadPiece(ctx context.Context, writer io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error)
 }
 
 type Verifier interface {
@@ -44,7 +44,7 @@ type Verifier interface {
 type SectorProvider interface {
 	// * returns storiface.ErrSectorNotFound if a requested existing sector doesn't exist
 	// * returns an error when allocate is set, and existing isn't, and the sector exists
-	AcquireSector(ctx context.Context, id abi.SectorID, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error)
+	AcquireSector(ctx context.Context, id storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error)
 }
 
 var _ SectorProvider = &basicfs.Provider{}
diff --git a/extern/sector-storage/ffiwrapper/verifier_cgo.go b/extern/sector-storage/ffiwrapper/verifier_cgo.go
index 9dab7103e..15e0e6ab3 100644
--- a/extern/sector-storage/ffiwrapper/verifier_cgo.go
+++ b/extern/sector-storage/ffiwrapper/verifier_cgo.go
@@ -11,6 +11,7 @@ import (
 	ffi "github.com/filecoin-project/filecoin-ffi"
 	"github.com/filecoin-project/go-state-types/abi"
 	proof2 "github.com/filecoin-project/specs-actors/v2/actors/runtime/proof"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 )
@@ -74,12 +75,15 @@ func (sb *Sealer) pubSectorToPriv(ctx context.Context, mid abi.ActorID, sectorIn
 			continue
 		}
 
-		sid := abi.SectorID{Miner: mid, Number: s.SectorNumber}
+		sid := storage.SectorRef{
+			ID:        abi.SectorID{Miner: mid, Number: s.SectorNumber},
+			ProofType: s.SealProof,
+		}
 
 		paths, d, err := sb.sectors.AcquireSector(ctx, sid, storiface.FTCache|storiface.FTSealed, 0, storiface.PathStorage)
 		if err != nil {
-			log.Warnw("failed to acquire sector, skipping", "sector", sid, "error", err)
-			skipped = append(skipped, sid)
+			log.Warnw("failed to acquire sector, skipping", "sector", sid.ID, "error", err)
+			skipped = append(skipped, sid.ID)
 			continue
 		}
 		doneFuncs = append(doneFuncs, d)
diff --git a/extern/sector-storage/manager.go b/extern/sector-storage/manager.go
index a3d6a4131..eec19c9f2 100644
--- a/extern/sector-storage/manager.go
+++ b/extern/sector-storage/manager.go
@@ -47,9 +47,7 @@ type Worker interface {
 }
 
 type SectorManager interface {
-	SectorSize() abi.SectorSize
-
-	ReadPiece(context.Context, io.Writer, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) error
+	ReadPiece(context.Context, io.Writer, storage.SectorRef, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) error
 
 	ffiwrapper.StorageSealer
 	storage.Prover
@@ -61,8 +59,6 @@ type WorkerID uuid.UUID // worker session UUID
 var ClosedWorkerID = uuid.UUID{}
 
 type Manager struct {
-	scfg *ffiwrapper.Config
-
 	ls         stores.LocalStorage
 	storage    *stores.Remote
 	localStore *stores.Local
@@ -105,13 +101,13 @@ type StorageAuth http.Header
 type WorkerStateStore *statestore.StateStore
 type ManagerStateStore *statestore.StateStore
 
-func New(ctx context.Context, ls stores.LocalStorage, si stores.SectorIndex, cfg *ffiwrapper.Config, sc SealerConfig, urls URLs, sa StorageAuth, wss WorkerStateStore, mss ManagerStateStore) (*Manager, error) {
+func New(ctx context.Context, ls stores.LocalStorage, si stores.SectorIndex, sc SealerConfig, urls URLs, sa StorageAuth, wss WorkerStateStore, mss ManagerStateStore) (*Manager, error) {
 	lstor, err := stores.NewLocal(ctx, ls, si, urls)
 	if err != nil {
 		return nil, err
 	}
 
-	prover, err := ffiwrapper.New(&readonlyProvider{stor: lstor, index: si, spt: cfg.SealProofType}, cfg)
+	prover, err := ffiwrapper.New(&readonlyProvider{stor: lstor, index: si})
 	if err != nil {
 		return nil, xerrors.Errorf("creating prover instance: %w", err)
 	}
@@ -119,15 +115,13 @@ func New(ctx context.Context, ls stores.LocalStorage, si stores.SectorIndex, cfg
 	stor := stores.NewRemote(lstor, si, http.Header(sa), sc.ParallelFetchLimit)
 
 	m := &Manager{
-		scfg: cfg,
-
 		ls:         ls,
 		storage:    stor,
 		localStore: lstor,
 		remoteHnd:  &stores.FetchHandler{Local: lstor},
 		index:      si,
 
-		sched: newScheduler(cfg.SealProofType),
+		sched: newScheduler(),
 
 		Prover: prover,
 
@@ -162,7 +156,6 @@ func New(ctx context.Context, ls stores.LocalStorage, si stores.SectorIndex, cfg
 	}
 
 	err = m.AddWorker(ctx, NewLocalWorker(WorkerConfig{
-		SealProof: cfg.SealProofType,
 		TaskTypes: localTasks,
 	}, stor, lstor, si, m, wss))
 	if err != nil {
@@ -198,23 +191,18 @@ func (m *Manager) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	m.remoteHnd.ServeHTTP(w, r)
 }
 
-func (m *Manager) SectorSize() abi.SectorSize {
-	sz, _ := m.scfg.SealProofType.SectorSize()
-	return sz
-}
-
 func schedNop(context.Context, Worker) error {
 	return nil
 }
 
-func (m *Manager) schedFetch(sector abi.SectorID, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) func(context.Context, Worker) error {
+func (m *Manager) schedFetch(sector storage.SectorRef, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) func(context.Context, Worker) error {
 	return func(ctx context.Context, worker Worker) error {
 		_, err := m.waitSimpleCall(ctx)(worker.Fetch(ctx, sector, ft, ptype, am))
 		return err
 	}
 }
 
-func (m *Manager) readPiece(sink io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, rok *bool) func(ctx context.Context, w Worker) error {
+func (m *Manager) readPiece(sink io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, rok *bool) func(ctx context.Context, w Worker) error {
 	return func(ctx context.Context, w Worker) error {
 		r, err := m.waitSimpleCall(ctx)(w.ReadPiece(ctx, sink, sector, offset, size))
 		if err != nil {
@@ -227,19 +215,19 @@ func (m *Manager) readPiece(sink io.Writer, sector abi.SectorID, offset storifac
 	}
 }
 
-func (m *Manager) tryReadUnsealedPiece(ctx context.Context, sink io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (foundUnsealed bool, readOk bool, selector WorkerSelector, returnErr error) {
+func (m *Manager) tryReadUnsealedPiece(ctx context.Context, sink io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (foundUnsealed bool, readOk bool, selector WorkerSelector, returnErr error) {
 
 	// acquire a lock purely for reading unsealed sectors
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTUnsealed, storiface.FTNone); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTUnsealed, storiface.FTNone); err != nil {
 		returnErr = xerrors.Errorf("acquiring read sector lock: %w", err)
 		return
 	}
 
 	// passing 0 spt because we only need it when allowFetch is true
-	best, err := m.index.StorageFindSector(ctx, sector, storiface.FTUnsealed, 0, false)
+	best, err := m.index.StorageFindSector(ctx, sector.ID, storiface.FTUnsealed, 0, false)
 	if err != nil {
 		returnErr = xerrors.Errorf("read piece: checking for already existing unsealed sector: %w", err)
 		return
@@ -249,7 +237,7 @@ func (m *Manager) tryReadUnsealedPiece(ctx context.Context, sink io.Writer, sect
 	if foundUnsealed { // append to existing
 		// There is unsealed sector, see if we can read from it
 
-		selector = newExistingSelector(m.index, sector, storiface.FTUnsealed, false)
+		selector = newExistingSelector(m.index, sector.ID, storiface.FTUnsealed, false)
 
 		err = m.sched.Schedule(ctx, sector, sealtasks.TTReadUnsealed, selector, m.schedFetch(sector, storiface.FTUnsealed, storiface.PathSealing, storiface.AcquireMove),
 			m.readPiece(sink, sector, offset, size, &readOk))
@@ -262,7 +250,7 @@ func (m *Manager) tryReadUnsealedPiece(ctx context.Context, sink io.Writer, sect
 	return
 }
 
-func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, unsealed cid.Cid) error {
+func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, unsealed cid.Cid) error {
 	foundUnsealed, readOk, selector, err := m.tryReadUnsealedPiece(ctx, sink, sector, offset, size)
 	if err != nil {
 		return err
@@ -273,7 +261,7 @@ func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector abi.Sect
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTSealed|storiface.FTCache, storiface.FTUnsealed); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTSealed|storiface.FTCache, storiface.FTUnsealed); err != nil {
 		return xerrors.Errorf("acquiring unseal sector lock: %w", err)
 	}
 
@@ -302,7 +290,7 @@ func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector abi.Sect
 		return err
 	}
 
-	selector = newExistingSelector(m.index, sector, storiface.FTUnsealed, false)
+	selector = newExistingSelector(m.index, sector.ID, storiface.FTUnsealed, false)
 
 	err = m.sched.Schedule(ctx, sector, sealtasks.TTReadUnsealed, selector, m.schedFetch(sector, storiface.FTUnsealed, storiface.PathSealing, storiface.AcquireMove),
 		m.readPiece(sink, sector, offset, size, &readOk))
@@ -317,16 +305,16 @@ func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector abi.Sect
 	return nil
 }
 
-func (m *Manager) NewSector(ctx context.Context, sector abi.SectorID) error {
+func (m *Manager) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	log.Warnf("stub NewSector")
 	return nil
 }
 
-func (m *Manager) AddPiece(ctx context.Context, sector abi.SectorID, existingPieces []abi.UnpaddedPieceSize, sz abi.UnpaddedPieceSize, r io.Reader) (abi.PieceInfo, error) {
+func (m *Manager) AddPiece(ctx context.Context, sector storage.SectorRef, existingPieces []abi.UnpaddedPieceSize, sz abi.UnpaddedPieceSize, r io.Reader) (abi.PieceInfo, error) {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTNone, storiface.FTUnsealed); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTNone, storiface.FTUnsealed); err != nil {
 		return abi.PieceInfo{}, xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
@@ -335,7 +323,7 @@ func (m *Manager) AddPiece(ctx context.Context, sector abi.SectorID, existingPie
 	if len(existingPieces) == 0 { // new
 		selector = newAllocSelector(m.index, storiface.FTUnsealed, storiface.PathSealing)
 	} else { // use existing
-		selector = newExistingSelector(m.index, sector, storiface.FTUnsealed, false)
+		selector = newExistingSelector(m.index, sector.ID, storiface.FTUnsealed, false)
 	}
 
 	var out abi.PieceInfo
@@ -353,7 +341,7 @@ func (m *Manager) AddPiece(ctx context.Context, sector abi.SectorID, existingPie
 	return out, err
 }
 
-func (m *Manager) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
+func (m *Manager) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -380,7 +368,7 @@ func (m *Manager) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticke
 		return out, waitErr
 	}
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTUnsealed, storiface.FTSealed|storiface.FTCache); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTUnsealed, storiface.FTSealed|storiface.FTCache); err != nil {
 		return nil, xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
@@ -404,7 +392,7 @@ func (m *Manager) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticke
 	return out, waitErr
 }
 
-func (m *Manager) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage.PreCommit1Out) (out storage.SectorCids, err error) {
+func (m *Manager) SealPreCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.PreCommit1Out) (out storage.SectorCids, err error) {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -431,11 +419,11 @@ func (m *Manager) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase
 		return out, waitErr
 	}
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTSealed, storiface.FTCache); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTSealed, storiface.FTCache); err != nil {
 		return storage.SectorCids{}, xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
-	selector := newExistingSelector(m.index, sector, storiface.FTCache|storiface.FTSealed, true)
+	selector := newExistingSelector(m.index, sector.ID, storiface.FTCache|storiface.FTSealed, true)
 
 	err = m.sched.Schedule(ctx, sector, sealtasks.TTPreCommit2, selector, m.schedFetch(sector, storiface.FTCache|storiface.FTSealed, storiface.PathSealing, storiface.AcquireMove), func(ctx context.Context, w Worker) error {
 		err := m.startWork(ctx, w, wk)(w.SealPreCommit2(ctx, sector, phase1Out))
@@ -453,7 +441,7 @@ func (m *Manager) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase
 	return out, waitErr
 }
 
-func (m *Manager) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (out storage.Commit1Out, err error) {
+func (m *Manager) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (out storage.Commit1Out, err error) {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -480,14 +468,14 @@ func (m *Manager) SealCommit1(ctx context.Context, sector abi.SectorID, ticket a
 		return out, waitErr
 	}
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTSealed, storiface.FTCache); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTSealed, storiface.FTCache); err != nil {
 		return storage.Commit1Out{}, xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
 	// NOTE: We set allowFetch to false in so that we always execute on a worker
 	// with direct access to the data. We want to do that because this step is
 	// generally very cheap / fast, and transferring data is not worth the effort
-	selector := newExistingSelector(m.index, sector, storiface.FTCache|storiface.FTSealed, false)
+	selector := newExistingSelector(m.index, sector.ID, storiface.FTCache|storiface.FTSealed, false)
 
 	err = m.sched.Schedule(ctx, sector, sealtasks.TTCommit1, selector, m.schedFetch(sector, storiface.FTCache|storiface.FTSealed, storiface.PathSealing, storiface.AcquireMove), func(ctx context.Context, w Worker) error {
 		err := m.startWork(ctx, w, wk)(w.SealCommit1(ctx, sector, ticket, seed, pieces, cids))
@@ -505,7 +493,7 @@ func (m *Manager) SealCommit1(ctx context.Context, sector abi.SectorID, ticket a
 	return out, waitErr
 }
 
-func (m *Manager) SealCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage.Commit1Out) (out storage.Proof, err error) {
+func (m *Manager) SealCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.Commit1Out) (out storage.Proof, err error) {
 	wk, wait, cancel, err := m.getWork(ctx, sealtasks.TTCommit2, sector, phase1Out)
 	if err != nil {
 		return storage.Proof{}, xerrors.Errorf("getWork: %w", err)
@@ -548,17 +536,17 @@ func (m *Manager) SealCommit2(ctx context.Context, sector abi.SectorID, phase1Ou
 	return out, waitErr
 }
 
-func (m *Manager) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) error {
+func (m *Manager) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTNone, storiface.FTSealed|storiface.FTUnsealed|storiface.FTCache); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTNone, storiface.FTSealed|storiface.FTUnsealed|storiface.FTCache); err != nil {
 		return xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
 	unsealed := storiface.FTUnsealed
 	{
-		unsealedStores, err := m.index.StorageFindSector(ctx, sector, storiface.FTUnsealed, 0, false)
+		unsealedStores, err := m.index.StorageFindSector(ctx, sector.ID, storiface.FTUnsealed, 0, false)
 		if err != nil {
 			return xerrors.Errorf("finding unsealed sector: %w", err)
 		}
@@ -568,7 +556,7 @@ func (m *Manager) FinalizeSector(ctx context.Context, sector abi.SectorID, keepU
 		}
 	}
 
-	selector := newExistingSelector(m.index, sector, storiface.FTCache|storiface.FTSealed, false)
+	selector := newExistingSelector(m.index, sector.ID, storiface.FTCache|storiface.FTSealed, false)
 
 	err := m.sched.Schedule(ctx, sector, sealtasks.TTFinalize, selector,
 		m.schedFetch(sector, storiface.FTCache|storiface.FTSealed|unsealed, storiface.PathSealing, storiface.AcquireMove),
@@ -601,28 +589,28 @@ func (m *Manager) FinalizeSector(ctx context.Context, sector abi.SectorID, keepU
 	return nil
 }
 
-func (m *Manager) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) error {
+func (m *Manager) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) error {
 	log.Warnw("ReleaseUnsealed todo")
 	return nil
 }
 
-func (m *Manager) Remove(ctx context.Context, sector abi.SectorID) error {
+func (m *Manager) Remove(ctx context.Context, sector storage.SectorRef) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
-	if err := m.index.StorageLock(ctx, sector, storiface.FTNone, storiface.FTSealed|storiface.FTUnsealed|storiface.FTCache); err != nil {
+	if err := m.index.StorageLock(ctx, sector.ID, storiface.FTNone, storiface.FTSealed|storiface.FTUnsealed|storiface.FTCache); err != nil {
 		return xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
 	var err error
 
-	if rerr := m.storage.Remove(ctx, sector, storiface.FTSealed, true); rerr != nil {
+	if rerr := m.storage.Remove(ctx, sector.ID, storiface.FTSealed, true); rerr != nil {
 		err = multierror.Append(err, xerrors.Errorf("removing sector (sealed): %w", rerr))
 	}
-	if rerr := m.storage.Remove(ctx, sector, storiface.FTCache, true); rerr != nil {
+	if rerr := m.storage.Remove(ctx, sector.ID, storiface.FTCache, true); rerr != nil {
 		err = multierror.Append(err, xerrors.Errorf("removing sector (cache): %w", rerr))
 	}
-	if rerr := m.storage.Remove(ctx, sector, storiface.FTUnsealed, true); rerr != nil {
+	if rerr := m.storage.Remove(ctx, sector.ID, storiface.FTUnsealed, true); rerr != nil {
 		err = multierror.Append(err, xerrors.Errorf("removing sector (unsealed): %w", rerr))
 	}
 
diff --git a/extern/sector-storage/manager_test.go b/extern/sector-storage/manager_test.go
index f69d62b17..e768d4516 100644
--- a/extern/sector-storage/manager_test.go
+++ b/extern/sector-storage/manager_test.go
@@ -21,6 +21,7 @@ import (
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-statestore"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/fsutil"
@@ -90,28 +91,23 @@ func newTestMgr(ctx context.Context, t *testing.T, ds datastore.Datastore) (*Man
 	st := newTestStorage(t)
 
 	si := stores.NewIndex()
-	cfg := &ffiwrapper.Config{
-		SealProofType: abi.RegisteredSealProof_StackedDrg2KiBV1,
-	}
 
 	lstor, err := stores.NewLocal(ctx, st, si, nil)
 	require.NoError(t, err)
 
-	prover, err := ffiwrapper.New(&readonlyProvider{stor: lstor, spt: cfg.SealProofType}, cfg)
+	prover, err := ffiwrapper.New(&readonlyProvider{stor: lstor, index: si})
 	require.NoError(t, err)
 
 	stor := stores.NewRemote(lstor, si, nil, 6000)
 
 	m := &Manager{
-		scfg: cfg,
-
 		ls:         st,
 		storage:    stor,
 		localStore: lstor,
 		remoteHnd:  &stores.FetchHandler{Local: lstor},
 		index:      si,
 
-		sched: newScheduler(cfg.SealProofType),
+		sched: newScheduler(),
 
 		Prover: prover,
 
@@ -141,12 +137,14 @@ func TestSimple(t *testing.T) {
 	}
 
 	err := m.AddWorker(ctx, newTestWorker(WorkerConfig{
-		SealProof: abi.RegisteredSealProof_StackedDrg2KiBV1,
 		TaskTypes: localTasks,
 	}, lstor, m))
 	require.NoError(t, err)
 
-	sid := abi.SectorID{Miner: 1000, Number: 1}
+	sid := storage.SectorRef{
+		ID:        abi.SectorID{Miner: 1000, Number: 1},
+		ProofType: abi.RegisteredSealProof_StackedDrg2KiBV1,
+	}
 
 	pi, err := m.AddPiece(ctx, sid, nil, 1016, strings.NewReader(strings.Repeat("testthis", 127)))
 	require.NoError(t, err)
@@ -176,14 +174,16 @@ func TestRedoPC1(t *testing.T) {
 	}
 
 	tw := newTestWorker(WorkerConfig{
-		SealProof: abi.RegisteredSealProof_StackedDrg2KiBV1,
 		TaskTypes: localTasks,
 	}, lstor, m)
 
 	err := m.AddWorker(ctx, tw)
 	require.NoError(t, err)
 
-	sid := abi.SectorID{Miner: 1000, Number: 1}
+	sid := storage.SectorRef{
+		ID:        abi.SectorID{Miner: 1000, Number: 1},
+		ProofType: abi.RegisteredSealProof_StackedDrg2KiBV1,
+	}
 
 	pi, err := m.AddPiece(ctx, sid, nil, 1016, strings.NewReader(strings.Repeat("testthis", 127)))
 	require.NoError(t, err)
@@ -228,14 +228,16 @@ func TestRestartManager(t *testing.T) {
 			}
 
 			tw := newTestWorker(WorkerConfig{
-				SealProof: abi.RegisteredSealProof_StackedDrg2KiBV1,
 				TaskTypes: localTasks,
 			}, lstor, m)
 
 			err := m.AddWorker(ctx, tw)
 			require.NoError(t, err)
 
-			sid := abi.SectorID{Miner: 1000, Number: 1}
+			sid := storage.SectorRef{
+				ID:        abi.SectorID{Miner: 1000, Number: 1},
+				ProofType: abi.RegisteredSealProof_StackedDrg2KiBV1,
+			}
 
 			pi, err := m.AddPiece(ctx, sid, nil, 1016, strings.NewReader(strings.Repeat("testthis", 127)))
 			require.NoError(t, err)
@@ -329,14 +331,16 @@ func TestRestartWorker(t *testing.T) {
 	w := newLocalWorker(func() (ffiwrapper.Storage, error) {
 		return &testExec{apch: arch}, nil
 	}, WorkerConfig{
-		SealProof: 0,
 		TaskTypes: localTasks,
 	}, stor, lstor, idx, m, statestore.New(wds))
 
 	err := m.AddWorker(ctx, w)
 	require.NoError(t, err)
 
-	sid := abi.SectorID{Miner: 1000, Number: 1}
+	sid := storage.SectorRef{
+		ID:        abi.SectorID{Miner: 1000, Number: 1},
+		ProofType: abi.RegisteredSealProof_StackedDrg2KiBV1,
+	}
 
 	apDone := make(chan struct{})
 
@@ -363,7 +367,6 @@ func TestRestartWorker(t *testing.T) {
 	w = newLocalWorker(func() (ffiwrapper.Storage, error) {
 		return &testExec{apch: arch}, nil
 	}, WorkerConfig{
-		SealProof: 0,
 		TaskTypes: localTasks,
 	}, stor, lstor, idx, m, statestore.New(wds))
 
@@ -400,7 +403,6 @@ func TestReenableWorker(t *testing.T) {
 	w := newLocalWorker(func() (ffiwrapper.Storage, error) {
 		return &testExec{apch: arch}, nil
 	}, WorkerConfig{
-		SealProof: 0,
 		TaskTypes: localTasks,
 	}, stor, lstor, idx, m, statestore.New(wds))
 
diff --git a/extern/sector-storage/mock/mock.go b/extern/sector-storage/mock/mock.go
index b3de99ce5..5e85d6ef7 100644
--- a/extern/sector-storage/mock/mock.go
+++ b/extern/sector-storage/mock/mock.go
@@ -27,21 +27,14 @@ var log = logging.Logger("sbmock")
 type SectorMgr struct {
 	sectors      map[abi.SectorID]*sectorState
 	pieces       map[cid.Cid][]byte
-	sectorSize   abi.SectorSize
 	nextSectorID abi.SectorNumber
-	proofType    abi.RegisteredSealProof
 
 	lk sync.Mutex
 }
 
 type mockVerif struct{}
 
-func NewMockSectorMgr(ssize abi.SectorSize, genesisSectors []abi.SectorID) *SectorMgr {
-	rt, err := ffiwrapper.SealProofTypeFromSectorSize(ssize)
-	if err != nil {
-		panic(err)
-	}
-
+func NewMockSectorMgr(genesisSectors []abi.SectorID) *SectorMgr {
 	sectors := make(map[abi.SectorID]*sectorState)
 	for _, sid := range genesisSectors {
 		sectors[sid] = &sectorState{
@@ -53,9 +46,7 @@ func NewMockSectorMgr(ssize abi.SectorSize, genesisSectors []abi.SectorID) *Sect
 	return &SectorMgr{
 		sectors:      sectors,
 		pieces:       map[cid.Cid][]byte{},
-		sectorSize:   ssize,
 		nextSectorID: 5,
-		proofType:    rt,
 	}
 }
 
@@ -75,17 +66,17 @@ type sectorState struct {
 	lk sync.Mutex
 }
 
-func (mgr *SectorMgr) NewSector(ctx context.Context, sector abi.SectorID) error {
+func (mgr *SectorMgr) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	return nil
 }
 
-func (mgr *SectorMgr) AddPiece(ctx context.Context, sectorID abi.SectorID, existingPieces []abi.UnpaddedPieceSize, size abi.UnpaddedPieceSize, r io.Reader) (abi.PieceInfo, error) {
-	log.Warn("Add piece: ", sectorID, size, mgr.proofType)
+func (mgr *SectorMgr) AddPiece(ctx context.Context, sectorID storage.SectorRef, existingPieces []abi.UnpaddedPieceSize, size abi.UnpaddedPieceSize, r io.Reader) (abi.PieceInfo, error) {
+	log.Warn("Add piece: ", sectorID, size, sectorID.ProofType)
 
 	var b bytes.Buffer
 	tr := io.TeeReader(r, &b)
 
-	c, err := ffiwrapper.GeneratePieceCIDFromFile(mgr.proofType, tr, size)
+	c, err := ffiwrapper.GeneratePieceCIDFromFile(sectorID.ProofType, tr, size)
 	if err != nil {
 		return abi.PieceInfo{}, xerrors.Errorf("failed to generate piece cid: %w", err)
 	}
@@ -95,12 +86,12 @@ func (mgr *SectorMgr) AddPiece(ctx context.Context, sectorID abi.SectorID, exist
 	mgr.lk.Lock()
 	mgr.pieces[c] = b.Bytes()
 
-	ss, ok := mgr.sectors[sectorID]
+	ss, ok := mgr.sectors[sectorID.ID]
 	if !ok {
 		ss = &sectorState{
 			state: statePacking,
 		}
-		mgr.sectors[sectorID] = ss
+		mgr.sectors[sectorID.ID] = ss
 	}
 	mgr.lk.Unlock()
 
@@ -115,10 +106,6 @@ func (mgr *SectorMgr) AddPiece(ctx context.Context, sectorID abi.SectorID, exist
 	}, nil
 }
 
-func (mgr *SectorMgr) SectorSize() abi.SectorSize {
-	return mgr.sectorSize
-}
-
 func (mgr *SectorMgr) AcquireSectorNumber() (abi.SectorNumber, error) {
 	mgr.lk.Lock()
 	defer mgr.lk.Unlock()
@@ -127,9 +114,9 @@ func (mgr *SectorMgr) AcquireSectorNumber() (abi.SectorNumber, error) {
 	return id, nil
 }
 
-func (mgr *SectorMgr) ForceState(sid abi.SectorID, st int) error {
+func (mgr *SectorMgr) ForceState(sid storage.SectorRef, st int) error {
 	mgr.lk.Lock()
-	ss, ok := mgr.sectors[sid]
+	ss, ok := mgr.sectors[sid.ID]
 	mgr.lk.Unlock()
 	if !ok {
 		return xerrors.Errorf("no sector with id %d in storage", sid)
@@ -140,18 +127,23 @@ func (mgr *SectorMgr) ForceState(sid abi.SectorID, st int) error {
 	return nil
 }
 
-func (mgr *SectorMgr) SealPreCommit1(ctx context.Context, sid abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
+func (mgr *SectorMgr) SealPreCommit1(ctx context.Context, sid storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
 	mgr.lk.Lock()
-	ss, ok := mgr.sectors[sid]
+	ss, ok := mgr.sectors[sid.ID]
 	mgr.lk.Unlock()
 	if !ok {
 		return nil, xerrors.Errorf("no sector with id %d in storage", sid)
 	}
 
+	ssize, err := sid.ProofType.SectorSize()
+	if err != nil {
+		return nil, xerrors.Errorf("failed to get proof sector size: %w", err)
+	}
+
 	ss.lk.Lock()
 	defer ss.lk.Unlock()
 
-	ussize := abi.PaddedPieceSize(mgr.sectorSize).Unpadded()
+	ussize := abi.PaddedPieceSize(ssize).Unpadded()
 
 	// TODO: verify pieces in sinfo.pieces match passed in pieces
 
@@ -180,7 +172,7 @@ func (mgr *SectorMgr) SealPreCommit1(ctx context.Context, sid abi.SectorID, tick
 		}
 	}
 
-	commd, err := MockVerifier.GenerateDataCommitment(mgr.proofType, pis)
+	commd, err := MockVerifier.GenerateDataCommitment(sid.ProofType, pis)
 	if err != nil {
 		return nil, err
 	}
@@ -195,7 +187,7 @@ func (mgr *SectorMgr) SealPreCommit1(ctx context.Context, sid abi.SectorID, tick
 	return cc, nil
 }
 
-func (mgr *SectorMgr) SealPreCommit2(ctx context.Context, sid abi.SectorID, phase1Out storage.PreCommit1Out) (cids storage.SectorCids, err error) {
+func (mgr *SectorMgr) SealPreCommit2(ctx context.Context, sid storage.SectorRef, phase1Out storage.PreCommit1Out) (cids storage.SectorCids, err error) {
 	db := []byte(string(phase1Out))
 	db[0] ^= 'd'
 
@@ -214,9 +206,9 @@ func (mgr *SectorMgr) SealPreCommit2(ctx context.Context, sid abi.SectorID, phas
 	}, nil
 }
 
-func (mgr *SectorMgr) SealCommit1(ctx context.Context, sid abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (output storage.Commit1Out, err error) {
+func (mgr *SectorMgr) SealCommit1(ctx context.Context, sid storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (output storage.Commit1Out, err error) {
 	mgr.lk.Lock()
-	ss, ok := mgr.sectors[sid]
+	ss, ok := mgr.sectors[sid.ID]
 	mgr.lk.Unlock()
 	if !ok {
 		return nil, xerrors.Errorf("no such sector %d", sid)
@@ -236,16 +228,16 @@ func (mgr *SectorMgr) SealCommit1(ctx context.Context, sid abi.SectorID, ticket
 
 	var out [32]byte
 	for i := range out {
-		out[i] = cids.Unsealed.Bytes()[i] + cids.Sealed.Bytes()[31-i] - ticket[i]*seed[i] ^ byte(sid.Number&0xff)
+		out[i] = cids.Unsealed.Bytes()[i] + cids.Sealed.Bytes()[31-i] - ticket[i]*seed[i] ^ byte(sid.ID.Number&0xff)
 	}
 
 	return out[:], nil
 }
 
-func (mgr *SectorMgr) SealCommit2(ctx context.Context, sid abi.SectorID, phase1Out storage.Commit1Out) (proof storage.Proof, err error) {
+func (mgr *SectorMgr) SealCommit2(ctx context.Context, sid storage.SectorRef, phase1Out storage.Commit1Out) (proof storage.Proof, err error) {
 	var out [1920]byte
 	for i := range out[:len(phase1Out)] {
-		out[i] = phase1Out[i] ^ byte(sid.Number&0xff)
+		out[i] = phase1Out[i] ^ byte(sid.ID.Number&0xff)
 	}
 
 	return out[:], nil
@@ -253,10 +245,10 @@ func (mgr *SectorMgr) SealCommit2(ctx context.Context, sid abi.SectorID, phase1O
 
 // Test Instrumentation Methods
 
-func (mgr *SectorMgr) MarkFailed(sid abi.SectorID, failed bool) error {
+func (mgr *SectorMgr) MarkFailed(sid storage.SectorRef, failed bool) error {
 	mgr.lk.Lock()
 	defer mgr.lk.Unlock()
-	ss, ok := mgr.sectors[sid]
+	ss, ok := mgr.sectors[sid.ID]
 	if !ok {
 		return fmt.Errorf("no such sector in storage")
 	}
@@ -265,10 +257,10 @@ func (mgr *SectorMgr) MarkFailed(sid abi.SectorID, failed bool) error {
 	return nil
 }
 
-func (mgr *SectorMgr) MarkCorrupted(sid abi.SectorID, corrupted bool) error {
+func (mgr *SectorMgr) MarkCorrupted(sid storage.SectorRef, corrupted bool) error {
 	mgr.lk.Lock()
 	defer mgr.lk.Unlock()
-	ss, ok := mgr.sectors[sid]
+	ss, ok := mgr.sectors[sid.ID]
 	if !ok {
 		return fmt.Errorf("no such sector in storage")
 	}
@@ -353,66 +345,73 @@ func generateFakePoSt(sectorInfo []proof2.SectorInfo, rpt func(abi.RegisteredSea
 	}
 }
 
-func (mgr *SectorMgr) ReadPiece(ctx context.Context, w io.Writer, sectorID abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, c cid.Cid) error {
-	if len(mgr.sectors[sectorID].pieces) > 1 || offset != 0 {
+func (mgr *SectorMgr) ReadPiece(ctx context.Context, w io.Writer, sectorID storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, c cid.Cid) error {
+	if len(mgr.sectors[sectorID.ID].pieces) > 1 || offset != 0 {
 		panic("implme")
 	}
 
-	_, err := io.CopyN(w, bytes.NewReader(mgr.pieces[mgr.sectors[sectorID].pieces[0]]), int64(size))
+	_, err := io.CopyN(w, bytes.NewReader(mgr.pieces[mgr.sectors[sectorID.ID].pieces[0]]), int64(size))
 	return err
 }
 
-func (mgr *SectorMgr) StageFakeData(mid abi.ActorID) (abi.SectorID, []abi.PieceInfo, error) {
-	usize := abi.PaddedPieceSize(mgr.sectorSize).Unpadded()
+func (mgr *SectorMgr) StageFakeData(mid abi.ActorID, spt abi.RegisteredSealProof) (storage.SectorRef, []abi.PieceInfo, error) {
+	psize, err := spt.SectorSize()
+	if err != nil {
+		return storage.SectorRef{}, nil, err
+	}
+	usize := abi.PaddedPieceSize(psize).Unpadded()
 	sid, err := mgr.AcquireSectorNumber()
 	if err != nil {
-		return abi.SectorID{}, nil, err
+		return storage.SectorRef{}, nil, err
 	}
 
 	buf := make([]byte, usize)
 	_, _ = rand.Read(buf) // nolint:gosec
 
-	id := abi.SectorID{
-		Miner:  mid,
-		Number: sid,
+	id := storage.SectorRef{
+		ID: abi.SectorID{
+			Miner:  mid,
+			Number: sid,
+		},
+		ProofType: spt,
 	}
 
 	pi, err := mgr.AddPiece(context.TODO(), id, nil, usize, bytes.NewReader(buf))
 	if err != nil {
-		return abi.SectorID{}, nil, err
+		return storage.SectorRef{}, nil, err
 	}
 
 	return id, []abi.PieceInfo{pi}, nil
 }
 
-func (mgr *SectorMgr) FinalizeSector(context.Context, abi.SectorID, []storage.Range) error {
+func (mgr *SectorMgr) FinalizeSector(context.Context, storage.SectorRef, []storage.Range) error {
 	return nil
 }
 
-func (mgr *SectorMgr) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) error {
+func (mgr *SectorMgr) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) error {
 	return nil
 }
 
-func (mgr *SectorMgr) Remove(ctx context.Context, sector abi.SectorID) error {
+func (mgr *SectorMgr) Remove(ctx context.Context, sector storage.SectorRef) error {
 	mgr.lk.Lock()
 	defer mgr.lk.Unlock()
 
-	if _, has := mgr.sectors[sector]; !has {
+	if _, has := mgr.sectors[sector.ID]; !has {
 		return xerrors.Errorf("sector not found")
 	}
 
-	delete(mgr.sectors, sector)
+	delete(mgr.sectors, sector.ID)
 	return nil
 }
 
-func (mgr *SectorMgr) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, ids []abi.SectorID) ([]abi.SectorID, error) {
+func (mgr *SectorMgr) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, ids []storage.SectorRef) ([]abi.SectorID, error) {
 	var bad []abi.SectorID
 
 	for _, sid := range ids {
-		_, found := mgr.sectors[sid]
+		_, found := mgr.sectors[sid.ID]
 
-		if !found || mgr.sectors[sid].failed {
-			bad = append(bad, sid)
+		if !found || mgr.sectors[sid.ID].failed {
+			bad = append(bad, sid.ID)
 		}
 	}
 
diff --git a/extern/sector-storage/mock/mock_test.go b/extern/sector-storage/mock/mock_test.go
index 47c060f66..abc120058 100644
--- a/extern/sector-storage/mock/mock_test.go
+++ b/extern/sector-storage/mock/mock_test.go
@@ -9,9 +9,9 @@ import (
 )
 
 func TestOpFinish(t *testing.T) {
-	sb := NewMockSectorMgr(2048, nil)
+	sb := NewMockSectorMgr(nil)
 
-	sid, pieces, err := sb.StageFakeData(123)
+	sid, pieces, err := sb.StageFakeData(123, abi.RegisteredSealProof_StackedDrg2KiBV1_1)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/extern/sector-storage/request_queue.go b/extern/sector-storage/request_queue.go
index 9247ce24a..925c44fa8 100644
--- a/extern/sector-storage/request_queue.go
+++ b/extern/sector-storage/request_queue.go
@@ -20,7 +20,7 @@ func (q requestQueue) Less(i, j int) bool {
 		return q[i].taskType.Less(q[j].taskType)
 	}
 
-	return q[i].sector.Number < q[j].sector.Number // optimize minerActor.NewSectors bitfield
+	return q[i].sector.ID.Number < q[j].sector.ID.Number // optimize minerActor.NewSectors bitfield
 }
 
 func (q requestQueue) Swap(i, j int) {
diff --git a/extern/sector-storage/resources.go b/extern/sector-storage/resources.go
index 6b531e82b..7da3e96a6 100644
--- a/extern/sector-storage/resources.go
+++ b/extern/sector-storage/resources.go
@@ -314,4 +314,13 @@ var ResourceTable = map[sealtasks.TaskType]map[abi.RegisteredSealProof]Resources
 func init() {
 	ResourceTable[sealtasks.TTUnseal] = ResourceTable[sealtasks.TTPreCommit1] // TODO: measure accurately
 	ResourceTable[sealtasks.TTReadUnsealed] = ResourceTable[sealtasks.TTFetch]
+
+	// V1_1 is the same as V1
+	for _, m := range ResourceTable {
+		m[abi.RegisteredSealProof_StackedDrg2KiBV1_1] = m[abi.RegisteredSealProof_StackedDrg2KiBV1]
+		m[abi.RegisteredSealProof_StackedDrg8MiBV1_1] = m[abi.RegisteredSealProof_StackedDrg8MiBV1]
+		m[abi.RegisteredSealProof_StackedDrg512MiBV1_1] = m[abi.RegisteredSealProof_StackedDrg512MiBV1]
+		m[abi.RegisteredSealProof_StackedDrg32GiBV1_1] = m[abi.RegisteredSealProof_StackedDrg32GiBV1]
+		m[abi.RegisteredSealProof_StackedDrg64GiBV1_1] = m[abi.RegisteredSealProof_StackedDrg64GiBV1]
+	}
 }
diff --git a/extern/sector-storage/roprov.go b/extern/sector-storage/roprov.go
index 7f051b549..ebc7610d7 100644
--- a/extern/sector-storage/roprov.go
+++ b/extern/sector-storage/roprov.go
@@ -5,7 +5,7 @@ import (
 
 	"golang.org/x/xerrors"
 
-	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
@@ -14,23 +14,17 @@ import (
 type readonlyProvider struct {
 	index stores.SectorIndex
 	stor  *stores.Local
-	spt   abi.RegisteredSealProof
 }
 
-func (l *readonlyProvider) AcquireSector(ctx context.Context, id abi.SectorID, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType) (storiface.SectorPaths, func(), error) {
+func (l *readonlyProvider) AcquireSector(ctx context.Context, id storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType) (storiface.SectorPaths, func(), error) {
 	if allocate != storiface.FTNone {
 		return storiface.SectorPaths{}, nil, xerrors.New("read-only storage")
 	}
 
-	ssize, err := l.spt.SectorSize()
-	if err != nil {
-		return storiface.SectorPaths{}, nil, xerrors.Errorf("failed to determine sector size: %w", err)
-	}
-
 	ctx, cancel := context.WithCancel(ctx)
 
 	// use TryLock to avoid blocking
-	locked, err := l.index.StorageTryLock(ctx, id, existing, storiface.FTNone)
+	locked, err := l.index.StorageTryLock(ctx, id.ID, existing, storiface.FTNone)
 	if err != nil {
 		cancel()
 		return storiface.SectorPaths{}, nil, xerrors.Errorf("acquiring sector lock: %w", err)
@@ -40,7 +34,7 @@ func (l *readonlyProvider) AcquireSector(ctx context.Context, id abi.SectorID, e
 		return storiface.SectorPaths{}, nil, xerrors.Errorf("failed to acquire sector lock")
 	}
 
-	p, _, err := l.stor.AcquireSector(ctx, id, ssize, existing, allocate, sealing, storiface.AcquireMove)
+	p, _, err := l.stor.AcquireSector(ctx, id, existing, allocate, sealing, storiface.AcquireMove)
 
 	return p, cancel, err
 }
diff --git a/extern/sector-storage/sched.go b/extern/sector-storage/sched.go
index 549a16a96..79761a65e 100644
--- a/extern/sector-storage/sched.go
+++ b/extern/sector-storage/sched.go
@@ -11,6 +11,7 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/sealtasks"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
@@ -51,8 +52,6 @@ type WorkerSelector interface {
 }
 
 type scheduler struct {
-	spt abi.RegisteredSealProof
-
 	workersLk sync.RWMutex
 	workers   map[WorkerID]*workerHandle
 
@@ -122,7 +121,7 @@ type activeResources struct {
 }
 
 type workerRequest struct {
-	sector   abi.SectorID
+	sector   storage.SectorRef
 	taskType sealtasks.TaskType
 	priority int // larger values more important
 	sel      WorkerSelector
@@ -143,10 +142,8 @@ type workerResponse struct {
 	err error
 }
 
-func newScheduler(spt abi.RegisteredSealProof) *scheduler {
+func newScheduler() *scheduler {
 	return &scheduler{
-		spt: spt,
-
 		workers: map[WorkerID]*workerHandle{},
 
 		schedule:       make(chan *workerRequest),
@@ -168,7 +165,7 @@ func newScheduler(spt abi.RegisteredSealProof) *scheduler {
 	}
 }
 
-func (sh *scheduler) Schedule(ctx context.Context, sector abi.SectorID, taskType sealtasks.TaskType, sel WorkerSelector, prepare WorkerAction, work WorkerAction) error {
+func (sh *scheduler) Schedule(ctx context.Context, sector storage.SectorRef, taskType sealtasks.TaskType, sel WorkerSelector, prepare WorkerAction, work WorkerAction) error {
 	ret := make(chan workerResponse)
 
 	select {
@@ -315,7 +312,7 @@ func (sh *scheduler) diag() SchedDiagInfo {
 		task := (*sh.schedQueue)[sqi]
 
 		out.Requests = append(out.Requests, SchedDiagRequestInfo{
-			Sector:   task.sector,
+			Sector:   task.sector.ID,
 			TaskType: task.taskType,
 			Priority: task.priority,
 		})
@@ -378,7 +375,7 @@ func (sh *scheduler) trySched() {
 			}()
 
 			task := (*sh.schedQueue)[sqi]
-			needRes := ResourceTable[task.taskType][sh.spt]
+			needRes := ResourceTable[task.taskType][task.sector.ProofType]
 
 			task.indexHeap = sqi
 			for wnd, windowRequest := range sh.openWindows {
@@ -400,7 +397,7 @@ func (sh *scheduler) trySched() {
 				}
 
 				rpcCtx, cancel := context.WithTimeout(task.ctx, SelectorTimeout)
-				ok, err := task.sel.Ok(rpcCtx, task.taskType, sh.spt, worker)
+				ok, err := task.sel.Ok(rpcCtx, task.taskType, task.sector.ProofType, worker)
 				cancel()
 				if err != nil {
 					log.Errorf("trySched(1) req.sel.Ok error: %+v", err)
@@ -456,21 +453,21 @@ func (sh *scheduler) trySched() {
 
 	for sqi := 0; sqi < sh.schedQueue.Len(); sqi++ {
 		task := (*sh.schedQueue)[sqi]
-		needRes := ResourceTable[task.taskType][sh.spt]
+		needRes := ResourceTable[task.taskType][task.sector.ProofType]
 
 		selectedWindow := -1
 		for _, wnd := range acceptableWindows[task.indexHeap] {
 			wid := sh.openWindows[wnd].worker
 			wr := sh.workers[wid].info.Resources
 
-			log.Debugf("SCHED try assign sqi:%d sector %d to window %d", sqi, task.sector.Number, wnd)
+			log.Debugf("SCHED try assign sqi:%d sector %d to window %d", sqi, task.sector.ID.Number, wnd)
 
 			// TODO: allow bigger windows
 			if !windows[wnd].allocated.canHandleRequest(needRes, wid, "schedAssign", wr) {
 				continue
 			}
 
-			log.Debugf("SCHED ASSIGNED sqi:%d sector %d task %s to window %d", sqi, task.sector.Number, task.taskType, wnd)
+			log.Debugf("SCHED ASSIGNED sqi:%d sector %d task %s to window %d", sqi, task.sector.ID.Number, task.taskType, wnd)
 
 			windows[wnd].allocated.add(wr, needRes)
 			// TODO: We probably want to re-sort acceptableWindows here based on new
diff --git a/extern/sector-storage/sched_test.go b/extern/sector-storage/sched_test.go
index 849896ff6..a87d403b7 100644
--- a/extern/sector-storage/sched_test.go
+++ b/extern/sector-storage/sched_test.go
@@ -47,55 +47,55 @@ type schedTestWorker struct {
 	session uuid.UUID
 }
 
-func (s *schedTestWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
+func (s *schedTestWorker) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) SealPreCommit2(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
+func (s *schedTestWorker) SealPreCommit2(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
+func (s *schedTestWorker) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) SealCommit2(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (storiface.CallID, error) {
+func (s *schedTestWorker) SealCommit2(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) (storiface.CallID, error) {
+func (s *schedTestWorker) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) (storiface.CallID, error) {
+func (s *schedTestWorker) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) Remove(ctx context.Context, sector abi.SectorID) (storiface.CallID, error) {
+func (s *schedTestWorker) Remove(ctx context.Context, sector storage.SectorRef) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) NewSector(ctx context.Context, sector abi.SectorID) (storiface.CallID, error) {
+func (s *schedTestWorker) NewSector(ctx context.Context, sector storage.SectorRef) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
+func (s *schedTestWorker) AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) MoveStorage(ctx context.Context, sector abi.SectorID, types storiface.SectorFileType) (storiface.CallID, error) {
+func (s *schedTestWorker) MoveStorage(ctx context.Context, sector storage.SectorRef, types storiface.SectorFileType) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) Fetch(ctx context.Context, id abi.SectorID, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
+func (s *schedTestWorker) Fetch(ctx context.Context, id storage.SectorRef, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) UnsealPiece(ctx context.Context, id abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
+func (s *schedTestWorker) UnsealPiece(ctx context.Context, id storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
 	panic("implement me")
 }
 
-func (s *schedTestWorker) ReadPiece(ctx context.Context, writer io.Writer, id abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
+func (s *schedTestWorker) ReadPiece(ctx context.Context, writer io.Writer, id storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
 	panic("implement me")
 }
 
@@ -165,8 +165,7 @@ func addTestWorker(t *testing.T, sched *scheduler, index *stores.Index, name str
 }
 
 func TestSchedStartStop(t *testing.T) {
-	spt := abi.RegisteredSealProof_StackedDrg32GiBV1
-	sched := newScheduler(spt)
+	sched := newScheduler()
 	go sched.runSched()
 
 	addTestWorker(t, sched, stores.NewIndex(), "fred", nil)
@@ -211,12 +210,15 @@ func TestSched(t *testing.T) {
 			go func() {
 				defer rm.wg.Done()
 
-				sectorNum := abi.SectorID{
-					Miner:  8,
-					Number: sid,
+				sectorRef := storage.SectorRef{
+					ID: abi.SectorID{
+						Miner:  8,
+						Number: sid,
+					},
+					ProofType: spt,
 				}
 
-				err := sched.Schedule(ctx, sectorNum, taskType, sel, func(ctx context.Context, w Worker) error {
+				err := sched.Schedule(ctx, sectorRef, taskType, sel, func(ctx context.Context, w Worker) error {
 					wi, err := w.Info(ctx)
 					require.NoError(t, err)
 
@@ -286,7 +288,7 @@ func TestSched(t *testing.T) {
 		return func(t *testing.T) {
 			index := stores.NewIndex()
 
-			sched := newScheduler(spt)
+			sched := newScheduler()
 			sched.testSync = make(chan struct{})
 
 			go sched.runSched()
@@ -518,7 +520,6 @@ func (s slowishSelector) Cmp(ctx context.Context, task sealtasks.TaskType, a, b
 var _ WorkerSelector = slowishSelector(true)
 
 func BenchmarkTrySched(b *testing.B) {
-	spt := abi.RegisteredSealProof_StackedDrg32GiBV1
 	logging.SetAllLoggers(logging.LevelInfo)
 	defer logging.SetAllLoggers(logging.LevelDebug)
 	ctx := context.Background()
@@ -528,7 +529,7 @@ func BenchmarkTrySched(b *testing.B) {
 			for i := 0; i < b.N; i++ {
 				b.StopTimer()
 
-				sched := newScheduler(spt)
+				sched := newScheduler()
 				sched.workers[WorkerID{}] = &workerHandle{
 					workerRpc: nil,
 					info: storiface.WorkerInfo{
@@ -568,9 +569,8 @@ func BenchmarkTrySched(b *testing.B) {
 }
 
 func TestWindowCompact(t *testing.T) {
-	sh := scheduler{
-		spt: abi.RegisteredSealProof_StackedDrg32GiBV1,
-	}
+	sh := scheduler{}
+	spt := abi.RegisteredSealProof_StackedDrg32GiBV1
 
 	test := func(start [][]sealtasks.TaskType, expect [][]sealtasks.TaskType) func(t *testing.T) {
 		return func(t *testing.T) {
@@ -584,8 +584,11 @@ func TestWindowCompact(t *testing.T) {
 				window := &schedWindow{}
 
 				for _, task := range windowTasks {
-					window.todo = append(window.todo, &workerRequest{taskType: task})
-					window.allocated.add(wh.info.Resources, ResourceTable[task][sh.spt])
+					window.todo = append(window.todo, &workerRequest{
+						taskType: task,
+						sector:   storage.SectorRef{ProofType: spt},
+					})
+					window.allocated.add(wh.info.Resources, ResourceTable[task][spt])
 				}
 
 				wh.activeWindows = append(wh.activeWindows, window)
@@ -604,7 +607,7 @@ func TestWindowCompact(t *testing.T) {
 
 				for ti, task := range tasks {
 					require.Equal(t, task, wh.activeWindows[wi].todo[ti].taskType, "%d, %d", wi, ti)
-					expectRes.add(wh.info.Resources, ResourceTable[task][sh.spt])
+					expectRes.add(wh.info.Resources, ResourceTable[task][spt])
 				}
 
 				require.Equal(t, expectRes.cpuUse, wh.activeWindows[wi].allocated.cpuUse, "%d", wi)
diff --git a/extern/sector-storage/sched_worker.go b/extern/sector-storage/sched_worker.go
index 29c730b03..67bddca3a 100644
--- a/extern/sector-storage/sched_worker.go
+++ b/extern/sector-storage/sched_worker.go
@@ -294,7 +294,7 @@ func (sw *schedWorker) workerCompactWindows() {
 			var moved []int
 
 			for ti, todo := range window.todo {
-				needRes := ResourceTable[todo.taskType][sw.sched.spt]
+				needRes := ResourceTable[todo.taskType][todo.sector.ProofType]
 				if !lower.allocated.canHandleRequest(needRes, sw.wid, "compactWindows", worker.info.Resources) {
 					continue
 				}
@@ -350,7 +350,7 @@ assignLoop:
 
 			worker.lk.Lock()
 			for t, todo := range firstWindow.todo {
-				needRes := ResourceTable[todo.taskType][sw.sched.spt]
+				needRes := ResourceTable[todo.taskType][todo.sector.ProofType]
 				if worker.preparing.canHandleRequest(needRes, sw.wid, "startPreparing", worker.info.Resources) {
 					tidx = t
 					break
@@ -364,7 +364,7 @@ assignLoop:
 
 			todo := firstWindow.todo[tidx]
 
-			log.Debugf("assign worker sector %d", todo.sector.Number)
+			log.Debugf("assign worker sector %d", todo.sector.ID.Number)
 			err := sw.startProcessingTask(sw.taskDone, todo)
 
 			if err != nil {
@@ -389,7 +389,7 @@ assignLoop:
 func (sw *schedWorker) startProcessingTask(taskDone chan struct{}, req *workerRequest) error {
 	w, sh := sw.worker, sw.sched
 
-	needRes := ResourceTable[req.taskType][sh.spt]
+	needRes := ResourceTable[req.taskType][req.sector.ProofType]
 
 	w.lk.Lock()
 	w.preparing.add(w.info.Resources, needRes)
diff --git a/extern/sector-storage/stats.go b/extern/sector-storage/stats.go
index a58d515c9..df3b4eed0 100644
--- a/extern/sector-storage/stats.go
+++ b/extern/sector-storage/stats.go
@@ -46,7 +46,7 @@ func (m *Manager) WorkerJobs() map[uuid.UUID][]storiface.WorkerJob {
 			for _, request := range window.todo {
 				out[uuid.UUID(id)] = append(out[uuid.UUID(id)], storiface.WorkerJob{
 					ID:      storiface.UndefCall,
-					Sector:  request.sector,
+					Sector:  request.sector.ID,
 					Task:    request.taskType,
 					RunWait: wi + 1,
 					Start:   request.start,
diff --git a/extern/sector-storage/stores/http_handler.go b/extern/sector-storage/stores/http_handler.go
index 2237bd407..a4c0480d4 100644
--- a/extern/sector-storage/stores/http_handler.go
+++ b/extern/sector-storage/stores/http_handler.go
@@ -12,6 +12,8 @@ import (
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 	"github.com/filecoin-project/lotus/extern/sector-storage/tarutil"
+
+	"github.com/filecoin-project/specs-storage/storage"
 )
 
 var log = logging.Logger("stores")
@@ -73,7 +75,12 @@ func (handler *FetchHandler) remoteGetSector(w http.ResponseWriter, r *http.Requ
 	// The caller has a lock on this sector already, no need to get one here
 
 	// passing 0 spt because we don't allocate anything
-	paths, _, err := handler.Local.AcquireSector(r.Context(), id, 0, ft, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
+	si := storage.SectorRef{
+		ID:        id,
+		ProofType: 0,
+	}
+
+	paths, _, err := handler.Local.AcquireSector(r.Context(), si, ft, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
 	if err != nil {
 		log.Errorf("%+v", err)
 		w.WriteHeader(500)
diff --git a/extern/sector-storage/stores/interface.go b/extern/sector-storage/stores/interface.go
index 574ec599e..a997ad3d2 100644
--- a/extern/sector-storage/stores/interface.go
+++ b/extern/sector-storage/stores/interface.go
@@ -5,12 +5,14 @@ import (
 
 	"github.com/filecoin-project/go-state-types/abi"
 
+	"github.com/filecoin-project/specs-storage/storage"
+
 	"github.com/filecoin-project/lotus/extern/sector-storage/fsutil"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 )
 
 type Store interface {
-	AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.SectorSize, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType, op storiface.AcquireMode) (paths storiface.SectorPaths, stores storiface.SectorPaths, err error)
+	AcquireSector(ctx context.Context, s storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType, op storiface.AcquireMode) (paths storiface.SectorPaths, stores storiface.SectorPaths, err error)
 	Remove(ctx context.Context, s abi.SectorID, types storiface.SectorFileType, force bool) error
 
 	// like remove, but doesn't remove the primary sector copy, nor the last
@@ -18,7 +20,7 @@ type Store interface {
 	RemoveCopies(ctx context.Context, s abi.SectorID, types storiface.SectorFileType) error
 
 	// move sectors into storage
-	MoveStorage(ctx context.Context, s abi.SectorID, ssize abi.SectorSize, types storiface.SectorFileType) error
+	MoveStorage(ctx context.Context, s storage.SectorRef, types storiface.SectorFileType) error
 
 	FsStat(ctx context.Context, id ID) (fsutil.FsStat, error)
 }
diff --git a/extern/sector-storage/stores/local.go b/extern/sector-storage/stores/local.go
index 7de3103b9..026f096eb 100644
--- a/extern/sector-storage/stores/local.go
+++ b/extern/sector-storage/stores/local.go
@@ -14,6 +14,7 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/fsutil"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
@@ -325,7 +326,12 @@ func (st *Local) reportStorage(ctx context.Context) {
 	}
 }
 
-func (st *Local) Reserve(ctx context.Context, sid abi.SectorID, ssize abi.SectorSize, ft storiface.SectorFileType, storageIDs storiface.SectorPaths, overheadTab map[storiface.SectorFileType]int) (func(), error) {
+func (st *Local) Reserve(ctx context.Context, sid storage.SectorRef, ft storiface.SectorFileType, storageIDs storiface.SectorPaths, overheadTab map[storiface.SectorFileType]int) (func(), error) {
+	ssize, err := sid.ProofType.SectorSize()
+	if err != nil {
+		return nil, err
+	}
+
 	st.localLk.Lock()
 
 	done := func() {}
@@ -375,11 +381,16 @@ func (st *Local) Reserve(ctx context.Context, sid abi.SectorID, ssize abi.Sector
 	return done, nil
 }
 
-func (st *Local) AcquireSector(ctx context.Context, sid abi.SectorID, ssize abi.SectorSize, existing storiface.SectorFileType, allocate storiface.SectorFileType, pathType storiface.PathType, op storiface.AcquireMode) (storiface.SectorPaths, storiface.SectorPaths, error) {
+func (st *Local) AcquireSector(ctx context.Context, sid storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, pathType storiface.PathType, op storiface.AcquireMode) (storiface.SectorPaths, storiface.SectorPaths, error) {
 	if existing|allocate != existing^allocate {
 		return storiface.SectorPaths{}, storiface.SectorPaths{}, xerrors.New("can't both find and allocate a sector")
 	}
 
+	ssize, err := sid.ProofType.SectorSize()
+	if err != nil {
+		return storiface.SectorPaths{}, storiface.SectorPaths{}, err
+	}
+
 	st.localLk.RLock()
 	defer st.localLk.RUnlock()
 
@@ -391,7 +402,7 @@ func (st *Local) AcquireSector(ctx context.Context, sid abi.SectorID, ssize abi.
 			continue
 		}
 
-		si, err := st.index.StorageFindSector(ctx, sid, fileType, ssize, false)
+		si, err := st.index.StorageFindSector(ctx, sid.ID, fileType, ssize, false)
 		if err != nil {
 			log.Warnf("finding existing sector %d(t:%d) failed: %+v", sid, fileType, err)
 			continue
@@ -407,7 +418,7 @@ func (st *Local) AcquireSector(ctx context.Context, sid abi.SectorID, ssize abi.
 				continue
 			}
 
-			spath := p.sectorPath(sid, fileType)
+			spath := p.sectorPath(sid.ID, fileType)
 			storiface.SetPathByType(&out, fileType, spath)
 			storiface.SetPathByType(&storageIDs, fileType, string(info.ID))
 
@@ -449,7 +460,7 @@ func (st *Local) AcquireSector(ctx context.Context, sid abi.SectorID, ssize abi.
 
 			// TODO: Check free space
 
-			best = p.sectorPath(sid, fileType)
+			best = p.sectorPath(sid.ID, fileType)
 			bestID = si.ID
 			break
 		}
@@ -578,13 +589,13 @@ func (st *Local) removeSector(ctx context.Context, sid abi.SectorID, typ storifa
 	return nil
 }
 
-func (st *Local) MoveStorage(ctx context.Context, s abi.SectorID, ssize abi.SectorSize, types storiface.SectorFileType) error {
-	dest, destIds, err := st.AcquireSector(ctx, s, ssize, storiface.FTNone, types, storiface.PathStorage, storiface.AcquireMove)
+func (st *Local) MoveStorage(ctx context.Context, s storage.SectorRef, types storiface.SectorFileType) error {
+	dest, destIds, err := st.AcquireSector(ctx, s, storiface.FTNone, types, storiface.PathStorage, storiface.AcquireMove)
 	if err != nil {
 		return xerrors.Errorf("acquire dest storage: %w", err)
 	}
 
-	src, srcIds, err := st.AcquireSector(ctx, s, ssize, types, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
+	src, srcIds, err := st.AcquireSector(ctx, s, types, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
 	if err != nil {
 		return xerrors.Errorf("acquire src storage: %w", err)
 	}
@@ -616,7 +627,7 @@ func (st *Local) MoveStorage(ctx context.Context, s abi.SectorID, ssize abi.Sect
 
 		log.Debugf("moving %v(%d) to storage: %s(se:%t; st:%t) -> %s(se:%t; st:%t)", s, fileType, sst.ID, sst.CanSeal, sst.CanStore, dst.ID, dst.CanSeal, dst.CanStore)
 
-		if err := st.index.StorageDropSector(ctx, ID(storiface.PathByType(srcIds, fileType)), s, fileType); err != nil {
+		if err := st.index.StorageDropSector(ctx, ID(storiface.PathByType(srcIds, fileType)), s.ID, fileType); err != nil {
 			return xerrors.Errorf("dropping source sector from index: %w", err)
 		}
 
@@ -625,7 +636,7 @@ func (st *Local) MoveStorage(ctx context.Context, s abi.SectorID, ssize abi.Sect
 			return xerrors.Errorf("moving sector %v(%d): %w", s, fileType, err)
 		}
 
-		if err := st.index.StorageDeclareSector(ctx, ID(storiface.PathByType(destIds, fileType)), s, fileType, true); err != nil {
+		if err := st.index.StorageDeclareSector(ctx, ID(storiface.PathByType(destIds, fileType)), s.ID, fileType, true); err != nil {
 			return xerrors.Errorf("declare sector %d(t:%d) -> %s: %w", s, fileType, ID(storiface.PathByType(destIds, fileType)), err)
 		}
 	}
diff --git a/extern/sector-storage/stores/remote.go b/extern/sector-storage/stores/remote.go
index 37dde910d..bf66c1bb5 100644
--- a/extern/sector-storage/stores/remote.go
+++ b/extern/sector-storage/stores/remote.go
@@ -19,6 +19,7 @@ import (
 	"github.com/filecoin-project/lotus/extern/sector-storage/tarutil"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/hashicorp/go-multierror"
 	files "github.com/ipfs/go-ipfs-files"
@@ -58,7 +59,7 @@ func NewRemote(local *Local, index SectorIndex, auth http.Header, fetchLimit int
 	}
 }
 
-func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.SectorSize, existing storiface.SectorFileType, allocate storiface.SectorFileType, pathType storiface.PathType, op storiface.AcquireMode) (storiface.SectorPaths, storiface.SectorPaths, error) {
+func (r *Remote) AcquireSector(ctx context.Context, s storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, pathType storiface.PathType, op storiface.AcquireMode) (storiface.SectorPaths, storiface.SectorPaths, error) {
 	if existing|allocate != existing^allocate {
 		return storiface.SectorPaths{}, storiface.SectorPaths{}, xerrors.New("can't both find and allocate a sector")
 	}
@@ -66,9 +67,9 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 	for {
 		r.fetchLk.Lock()
 
-		c, locked := r.fetching[s]
+		c, locked := r.fetching[s.ID]
 		if !locked {
-			r.fetching[s] = make(chan struct{})
+			r.fetching[s.ID] = make(chan struct{})
 			r.fetchLk.Unlock()
 			break
 		}
@@ -85,12 +86,12 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 
 	defer func() {
 		r.fetchLk.Lock()
-		close(r.fetching[s])
-		delete(r.fetching, s)
+		close(r.fetching[s.ID])
+		delete(r.fetching, s.ID)
 		r.fetchLk.Unlock()
 	}()
 
-	paths, stores, err := r.local.AcquireSector(ctx, s, ssize, existing, allocate, pathType, op)
+	paths, stores, err := r.local.AcquireSector(ctx, s, existing, allocate, pathType, op)
 	if err != nil {
 		return storiface.SectorPaths{}, storiface.SectorPaths{}, xerrors.Errorf("local acquire error: %w", err)
 	}
@@ -106,7 +107,7 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 		}
 	}
 
-	apaths, ids, err := r.local.AcquireSector(ctx, s, ssize, storiface.FTNone, toFetch, pathType, op)
+	apaths, ids, err := r.local.AcquireSector(ctx, s, storiface.FTNone, toFetch, pathType, op)
 	if err != nil {
 		return storiface.SectorPaths{}, storiface.SectorPaths{}, xerrors.Errorf("allocate local sector for fetching: %w", err)
 	}
@@ -116,7 +117,7 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 		odt = storiface.FsOverheadFinalized
 	}
 
-	releaseStorage, err := r.local.Reserve(ctx, s, ssize, toFetch, ids, odt)
+	releaseStorage, err := r.local.Reserve(ctx, s, toFetch, ids, odt)
 	if err != nil {
 		return storiface.SectorPaths{}, storiface.SectorPaths{}, xerrors.Errorf("reserving storage space: %w", err)
 	}
@@ -134,7 +135,7 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 		dest := storiface.PathByType(apaths, fileType)
 		storageID := storiface.PathByType(ids, fileType)
 
-		url, err := r.acquireFromRemote(ctx, s, fileType, dest)
+		url, err := r.acquireFromRemote(ctx, s.ID, fileType, dest)
 		if err != nil {
 			return storiface.SectorPaths{}, storiface.SectorPaths{}, err
 		}
@@ -142,7 +143,7 @@ func (r *Remote) AcquireSector(ctx context.Context, s abi.SectorID, ssize abi.Se
 		storiface.SetPathByType(&paths, fileType, dest)
 		storiface.SetPathByType(&stores, fileType, storageID)
 
-		if err := r.index.StorageDeclareSector(ctx, ID(storageID), s, fileType, op == storiface.AcquireMove); err != nil {
+		if err := r.index.StorageDeclareSector(ctx, ID(storageID), s.ID, fileType, op == storiface.AcquireMove); err != nil {
 			log.Warnf("declaring sector %v in %s failed: %+v", s, storageID, err)
 			continue
 		}
@@ -281,14 +282,14 @@ func (r *Remote) fetch(ctx context.Context, url, outname string) error {
 	}
 }
 
-func (r *Remote) MoveStorage(ctx context.Context, s abi.SectorID, ssize abi.SectorSize, types storiface.SectorFileType) error {
+func (r *Remote) MoveStorage(ctx context.Context, s storage.SectorRef, types storiface.SectorFileType) error {
 	// Make sure we have the data local
-	_, _, err := r.AcquireSector(ctx, s, ssize, types, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
+	_, _, err := r.AcquireSector(ctx, s, types, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
 	if err != nil {
 		return xerrors.Errorf("acquire src storage (remote): %w", err)
 	}
 
-	return r.local.MoveStorage(ctx, s, ssize, types)
+	return r.local.MoveStorage(ctx, s, types)
 }
 
 func (r *Remote) Remove(ctx context.Context, sid abi.SectorID, typ storiface.SectorFileType, force bool) error {
diff --git a/extern/sector-storage/storiface/worker.go b/extern/sector-storage/storiface/worker.go
index 1f2c316b8..4e52fa04c 100644
--- a/extern/sector-storage/storiface/worker.go
+++ b/extern/sector-storage/storiface/worker.go
@@ -77,17 +77,17 @@ var _ fmt.Stringer = &CallID{}
 var UndefCall CallID
 
 type WorkerCalls interface {
-	AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (CallID, error)
-	SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (CallID, error)
-	SealPreCommit2(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (CallID, error)
-	SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (CallID, error)
-	SealCommit2(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (CallID, error)
-	FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) (CallID, error)
-	ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) (CallID, error)
-	MoveStorage(ctx context.Context, sector abi.SectorID, types SectorFileType) (CallID, error)
-	UnsealPiece(context.Context, abi.SectorID, UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) (CallID, error)
-	ReadPiece(context.Context, io.Writer, abi.SectorID, UnpaddedByteIndex, abi.UnpaddedPieceSize) (CallID, error)
-	Fetch(context.Context, abi.SectorID, SectorFileType, PathType, AcquireMode) (CallID, error)
+	AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (CallID, error)
+	SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (CallID, error)
+	SealPreCommit2(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (CallID, error)
+	SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (CallID, error)
+	SealCommit2(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (CallID, error)
+	FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (CallID, error)
+	ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) (CallID, error)
+	MoveStorage(ctx context.Context, sector storage.SectorRef, types SectorFileType) (CallID, error)
+	UnsealPiece(context.Context, storage.SectorRef, UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) (CallID, error)
+	ReadPiece(context.Context, io.Writer, storage.SectorRef, UnpaddedByteIndex, abi.UnpaddedPieceSize) (CallID, error)
+	Fetch(context.Context, storage.SectorRef, SectorFileType, PathType, AcquireMode) (CallID, error)
 }
 
 type WorkerReturn interface {
diff --git a/extern/sector-storage/teststorage_test.go b/extern/sector-storage/teststorage_test.go
index 0c8a240a3..72b27b154 100644
--- a/extern/sector-storage/teststorage_test.go
+++ b/extern/sector-storage/teststorage_test.go
@@ -31,50 +31,50 @@ func (t *testExec) GenerateWindowPoSt(ctx context.Context, minerID abi.ActorID,
 	panic("implement me")
 }
 
-func (t *testExec) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storage.PreCommit1Out, error) {
+func (t *testExec) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storage.PreCommit1Out, error) {
 	panic("implement me")
 }
 
-func (t *testExec) SealPreCommit2(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (storage.SectorCids, error) {
+func (t *testExec) SealPreCommit2(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (storage.SectorCids, error) {
 	panic("implement me")
 }
 
-func (t *testExec) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storage.Commit1Out, error) {
+func (t *testExec) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storage.Commit1Out, error) {
 	panic("implement me")
 }
 
-func (t *testExec) SealCommit2(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (storage.Proof, error) {
+func (t *testExec) SealCommit2(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (storage.Proof, error) {
 	panic("implement me")
 }
 
-func (t *testExec) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) error {
+func (t *testExec) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) error {
 	panic("implement me")
 }
 
-func (t *testExec) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage.Range) error {
+func (t *testExec) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) error {
 	panic("implement me")
 }
 
-func (t *testExec) Remove(ctx context.Context, sector abi.SectorID) error {
+func (t *testExec) Remove(ctx context.Context, sector storage.SectorRef) error {
 	panic("implement me")
 }
 
-func (t *testExec) NewSector(ctx context.Context, sector abi.SectorID) error {
+func (t *testExec) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	panic("implement me")
 }
 
-func (t *testExec) AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (abi.PieceInfo, error) {
+func (t *testExec) AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (abi.PieceInfo, error) {
 	resp := make(chan apres)
 	t.apch <- resp
 	ar := <-resp
 	return ar.pi, ar.err
 }
 
-func (t *testExec) UnsealPiece(ctx context.Context, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error {
+func (t *testExec) UnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd cid.Cid) error {
 	panic("implement me")
 }
 
-func (t *testExec) ReadPiece(ctx context.Context, writer io.Writer, sector abi.SectorID, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error) {
+func (t *testExec) ReadPiece(ctx context.Context, writer io.Writer, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (bool, error) {
 	panic("implement me")
 }
 
diff --git a/extern/sector-storage/testworker_test.go b/extern/sector-storage/testworker_test.go
index d04afb0cc..94dc815f0 100644
--- a/extern/sector-storage/testworker_test.go
+++ b/extern/sector-storage/testworker_test.go
@@ -31,11 +31,6 @@ type testWorker struct {
 }
 
 func newTestWorker(wcfg WorkerConfig, lstor *stores.Local, ret storiface.WorkerReturn) *testWorker {
-	ssize, err := wcfg.SealProof.SectorSize()
-	if err != nil {
-		panic(err)
-	}
-
 	acceptTasks := map[sealtasks.TaskType]struct{}{}
 	for _, taskType := range wcfg.TaskTypes {
 		acceptTasks[taskType] = struct{}{}
@@ -46,15 +41,15 @@ func newTestWorker(wcfg WorkerConfig, lstor *stores.Local, ret storiface.WorkerR
 		lstor:       lstor,
 		ret:         ret,
 
-		mockSeal: mock.NewMockSectorMgr(ssize, nil),
+		mockSeal: mock.NewMockSectorMgr(nil),
 
 		session: uuid.New(),
 	}
 }
 
-func (t *testWorker) asyncCall(sector abi.SectorID, work func(ci storiface.CallID)) (storiface.CallID, error) {
+func (t *testWorker) asyncCall(sector storage.SectorRef, work func(ci storiface.CallID)) (storiface.CallID, error) {
 	ci := storiface.CallID{
-		Sector: sector,
+		Sector: sector.ID,
 		ID:     uuid.New(),
 	}
 
@@ -63,7 +58,7 @@ func (t *testWorker) asyncCall(sector abi.SectorID, work func(ci storiface.CallI
 	return ci, nil
 }
 
-func (t *testWorker) AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
+func (t *testWorker) AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
 	return t.asyncCall(sector, func(ci storiface.CallID) {
 		p, err := t.mockSeal.AddPiece(ctx, sector, pieceSizes, newPieceSize, pieceData)
 		if err := t.ret.ReturnAddPiece(ctx, ci, p, errstr(err)); err != nil {
@@ -72,7 +67,7 @@ func (t *testWorker) AddPiece(ctx context.Context, sector abi.SectorID, pieceSiz
 	})
 }
 
-func (t *testWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
+func (t *testWorker) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	return t.asyncCall(sector, func(ci storiface.CallID) {
 		t.pc1s++
 
@@ -90,7 +85,7 @@ func (t *testWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, ti
 	})
 }
 
-func (t *testWorker) Fetch(ctx context.Context, sector abi.SectorID, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
+func (t *testWorker) Fetch(ctx context.Context, sector storage.SectorRef, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
 	return t.asyncCall(sector, func(ci storiface.CallID) {
 		if err := t.ret.ReturnFetch(ctx, ci, ""); err != nil {
 			log.Error(err)
diff --git a/extern/sector-storage/worker_local.go b/extern/sector-storage/worker_local.go
index 07cc9b5f9..7ab23e335 100644
--- a/extern/sector-storage/worker_local.go
+++ b/extern/sector-storage/worker_local.go
@@ -20,7 +20,7 @@ import (
 	ffi "github.com/filecoin-project/filecoin-ffi"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-statestore"
-	storage2 "github.com/filecoin-project/specs-storage/storage"
+	storage "github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/sealtasks"
@@ -31,7 +31,6 @@ import (
 var pathTypes = []storiface.SectorFileType{storiface.FTUnsealed, storiface.FTSealed, storiface.FTCache}
 
 type WorkerConfig struct {
-	SealProof abi.RegisteredSealProof
 	TaskTypes []sealtasks.TaskType
 	NoSwap    bool
 }
@@ -40,7 +39,6 @@ type WorkerConfig struct {
 type ExecutorFunc func() (ffiwrapper.Storage, error)
 
 type LocalWorker struct {
-	scfg       *ffiwrapper.Config
 	storage    stores.Store
 	localStore *stores.Local
 	sindex     stores.SectorIndex
@@ -64,9 +62,6 @@ func newLocalWorker(executor ExecutorFunc, wcfg WorkerConfig, store stores.Store
 	}
 
 	w := &LocalWorker{
-		scfg: &ffiwrapper.Config{
-			SealProofType: wcfg.SealProof,
-		},
 		storage:    store,
 		localStore: local,
 		sindex:     sindex,
@@ -119,18 +114,13 @@ type localWorkerPathProvider struct {
 	op storiface.AcquireMode
 }
 
-func (l *localWorkerPathProvider) AcquireSector(ctx context.Context, sector abi.SectorID, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType) (storiface.SectorPaths, func(), error) {
-	ssize, err := l.w.scfg.SealProofType.SectorSize()
+func (l *localWorkerPathProvider) AcquireSector(ctx context.Context, sector storage.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, sealing storiface.PathType) (storiface.SectorPaths, func(), error) {
+	paths, storageIDs, err := l.w.storage.AcquireSector(ctx, sector, existing, allocate, sealing, l.op)
 	if err != nil {
 		return storiface.SectorPaths{}, nil, err
 	}
 
-	paths, storageIDs, err := l.w.storage.AcquireSector(ctx, sector, ssize, existing, allocate, sealing, l.op)
-	if err != nil {
-		return storiface.SectorPaths{}, nil, err
-	}
-
-	releaseStorage, err := l.w.localStore.Reserve(ctx, sector, ssize, allocate, storageIDs, storiface.FSOverheadSeal)
+	releaseStorage, err := l.w.localStore.Reserve(ctx, sector, allocate, storageIDs, storiface.FSOverheadSeal)
 	if err != nil {
 		return storiface.SectorPaths{}, nil, xerrors.Errorf("reserving storage space: %w", err)
 	}
@@ -147,7 +137,7 @@ func (l *localWorkerPathProvider) AcquireSector(ctx context.Context, sector abi.
 
 			sid := storiface.PathByType(storageIDs, fileType)
 
-			if err := l.w.sindex.StorageDeclareSector(ctx, stores.ID(sid), sector, fileType, l.op == storiface.AcquireMove); err != nil {
+			if err := l.w.sindex.StorageDeclareSector(ctx, stores.ID(sid), sector.ID, fileType, l.op == storiface.AcquireMove); err != nil {
 				log.Errorf("declare sector error: %+v", err)
 			}
 		}
@@ -155,7 +145,7 @@ func (l *localWorkerPathProvider) AcquireSector(ctx context.Context, sector abi.
 }
 
 func (l *LocalWorker) ffiExec() (ffiwrapper.Storage, error) {
-	return ffiwrapper.New(&localWorkerPathProvider{w: l}, l.scfg)
+	return ffiwrapper.New(&localWorkerPathProvider{w: l})
 }
 
 type ReturnType string
@@ -222,9 +212,9 @@ var returnFunc = map[ReturnType]func(context.Context, storiface.CallID, storifac
 	Fetch:           rfunc(storiface.WorkerReturn.ReturnFetch),
 }
 
-func (l *LocalWorker) asyncCall(ctx context.Context, sector abi.SectorID, rt ReturnType, work func(ctx context.Context, ci storiface.CallID) (interface{}, error)) (storiface.CallID, error) {
+func (l *LocalWorker) asyncCall(ctx context.Context, sector storage.SectorRef, rt ReturnType, work func(ctx context.Context, ci storiface.CallID) (interface{}, error)) (storiface.CallID, error) {
 	ci := storiface.CallID{
-		Sector: sector,
+		Sector: sector.ID,
 		ID:     uuid.New(),
 	}
 
@@ -297,7 +287,7 @@ func errstr(err error) string {
 	return ""
 }
 
-func (l *LocalWorker) NewSector(ctx context.Context, sector abi.SectorID) error {
+func (l *LocalWorker) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	sb, err := l.executor()
 	if err != nil {
 		return err
@@ -306,7 +296,7 @@ func (l *LocalWorker) NewSector(ctx context.Context, sector abi.SectorID) error
 	return sb.NewSector(ctx, sector)
 }
 
-func (l *LocalWorker) AddPiece(ctx context.Context, sector abi.SectorID, epcs []abi.UnpaddedPieceSize, sz abi.UnpaddedPieceSize, r io.Reader) (storiface.CallID, error) {
+func (l *LocalWorker) AddPiece(ctx context.Context, sector storage.SectorRef, epcs []abi.UnpaddedPieceSize, sz abi.UnpaddedPieceSize, r io.Reader) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -317,7 +307,7 @@ func (l *LocalWorker) AddPiece(ctx context.Context, sector abi.SectorID, epcs []
 	})
 }
 
-func (l *LocalWorker) Fetch(ctx context.Context, sector abi.SectorID, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
+func (l *LocalWorker) Fetch(ctx context.Context, sector storage.SectorRef, fileType storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
 	return l.asyncCall(ctx, sector, Fetch, func(ctx context.Context, ci storiface.CallID) (interface{}, error) {
 		_, done, err := (&localWorkerPathProvider{w: l, op: am}).AcquireSector(ctx, sector, fileType, storiface.FTNone, ptype)
 		if err == nil {
@@ -328,16 +318,16 @@ func (l *LocalWorker) Fetch(ctx context.Context, sector abi.SectorID, fileType s
 	})
 }
 
-func (l *LocalWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
+func (l *LocalWorker) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	return l.asyncCall(ctx, sector, SealPreCommit1, func(ctx context.Context, ci storiface.CallID) (interface{}, error) {
 
 		{
 			// cleanup previous failed attempts if they exist
-			if err := l.storage.Remove(ctx, sector, storiface.FTSealed, true); err != nil {
+			if err := l.storage.Remove(ctx, sector.ID, storiface.FTSealed, true); err != nil {
 				return nil, xerrors.Errorf("cleaning up sealed data: %w", err)
 			}
 
-			if err := l.storage.Remove(ctx, sector, storiface.FTCache, true); err != nil {
+			if err := l.storage.Remove(ctx, sector.ID, storiface.FTCache, true); err != nil {
 				return nil, xerrors.Errorf("cleaning up cache data: %w", err)
 			}
 		}
@@ -351,7 +341,7 @@ func (l *LocalWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, t
 	})
 }
 
-func (l *LocalWorker) SealPreCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage2.PreCommit1Out) (storiface.CallID, error) {
+func (l *LocalWorker) SealPreCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.PreCommit1Out) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -362,7 +352,7 @@ func (l *LocalWorker) SealPreCommit2(ctx context.Context, sector abi.SectorID, p
 	})
 }
 
-func (l *LocalWorker) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage2.SectorCids) (storiface.CallID, error) {
+func (l *LocalWorker) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -373,7 +363,7 @@ func (l *LocalWorker) SealCommit1(ctx context.Context, sector abi.SectorID, tick
 	})
 }
 
-func (l *LocalWorker) SealCommit2(ctx context.Context, sector abi.SectorID, phase1Out storage2.Commit1Out) (storiface.CallID, error) {
+func (l *LocalWorker) SealCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.Commit1Out) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -384,7 +374,7 @@ func (l *LocalWorker) SealCommit2(ctx context.Context, sector abi.SectorID, phas
 	})
 }
 
-func (l *LocalWorker) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage2.Range) (storiface.CallID, error) {
+func (l *LocalWorker) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -396,7 +386,7 @@ func (l *LocalWorker) FinalizeSector(ctx context.Context, sector abi.SectorID, k
 		}
 
 		if len(keepUnsealed) == 0 {
-			if err := l.storage.Remove(ctx, sector, storiface.FTUnsealed, true); err != nil {
+			if err := l.storage.Remove(ctx, sector.ID, storiface.FTUnsealed, true); err != nil {
 				return nil, xerrors.Errorf("removing unsealed data: %w", err)
 			}
 		}
@@ -405,7 +395,7 @@ func (l *LocalWorker) FinalizeSector(ctx context.Context, sector abi.SectorID, k
 	})
 }
 
-func (l *LocalWorker) ReleaseUnsealed(ctx context.Context, sector abi.SectorID, safeToFree []storage2.Range) (storiface.CallID, error) {
+func (l *LocalWorker) ReleaseUnsealed(ctx context.Context, sector storage.SectorRef, safeToFree []storage.Range) (storiface.CallID, error) {
 	return storiface.UndefCall, xerrors.Errorf("implement me")
 }
 
@@ -425,18 +415,13 @@ func (l *LocalWorker) Remove(ctx context.Context, sector abi.SectorID) error {
 	return err
 }
 
-func (l *LocalWorker) MoveStorage(ctx context.Context, sector abi.SectorID, types storiface.SectorFileType) (storiface.CallID, error) {
+func (l *LocalWorker) MoveStorage(ctx context.Context, sector storage.SectorRef, types storiface.SectorFileType) (storiface.CallID, error) {
 	return l.asyncCall(ctx, sector, MoveStorage, func(ctx context.Context, ci storiface.CallID) (interface{}, error) {
-		ssize, err := l.scfg.SealProofType.SectorSize()
-		if err != nil {
-			return nil, err
-		}
-
-		return nil, l.storage.MoveStorage(ctx, sector, ssize, types)
+		return nil, l.storage.MoveStorage(ctx, sector, types)
 	})
 }
 
-func (l *LocalWorker) UnsealPiece(ctx context.Context, sector abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
+func (l *LocalWorker) UnsealPiece(ctx context.Context, sector storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
@@ -447,11 +432,11 @@ func (l *LocalWorker) UnsealPiece(ctx context.Context, sector abi.SectorID, inde
 			return nil, xerrors.Errorf("unsealing sector: %w", err)
 		}
 
-		if err = l.storage.RemoveCopies(ctx, sector, storiface.FTSealed); err != nil {
+		if err = l.storage.RemoveCopies(ctx, sector.ID, storiface.FTSealed); err != nil {
 			return nil, xerrors.Errorf("removing source data: %w", err)
 		}
 
-		if err = l.storage.RemoveCopies(ctx, sector, storiface.FTCache); err != nil {
+		if err = l.storage.RemoveCopies(ctx, sector.ID, storiface.FTCache); err != nil {
 			return nil, xerrors.Errorf("removing source data: %w", err)
 		}
 
@@ -459,7 +444,7 @@ func (l *LocalWorker) UnsealPiece(ctx context.Context, sector abi.SectorID, inde
 	})
 }
 
-func (l *LocalWorker) ReadPiece(ctx context.Context, writer io.Writer, sector abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
+func (l *LocalWorker) ReadPiece(ctx context.Context, writer io.Writer, sector storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
 	sb, err := l.executor()
 	if err != nil {
 		return storiface.UndefCall, err
diff --git a/extern/sector-storage/worker_tracked.go b/extern/sector-storage/worker_tracked.go
index 4a22fcca7..febb190c5 100644
--- a/extern/sector-storage/worker_tracked.go
+++ b/extern/sector-storage/worker_tracked.go
@@ -42,7 +42,7 @@ func (wt *workTracker) onDone(callID storiface.CallID) {
 	delete(wt.running, callID)
 }
 
-func (wt *workTracker) track(wid WorkerID, sid abi.SectorID, task sealtasks.TaskType) func(storiface.CallID, error) (storiface.CallID, error) {
+func (wt *workTracker) track(wid WorkerID, sid storage.SectorRef, task sealtasks.TaskType) func(storiface.CallID, error) (storiface.CallID, error) {
 	return func(callID storiface.CallID, err error) (storiface.CallID, error) {
 		if err != nil {
 			return callID, err
@@ -60,7 +60,7 @@ func (wt *workTracker) track(wid WorkerID, sid abi.SectorID, task sealtasks.Task
 		wt.running[callID] = trackedWork{
 			job: storiface.WorkerJob{
 				ID:     callID,
-				Sector: sid,
+				Sector: sid.ID,
 				Task:   task,
 				Start:  time.Now(),
 			},
@@ -99,39 +99,39 @@ type trackedWorker struct {
 	tracker *workTracker
 }
 
-func (t *trackedWorker) SealPreCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
+func (t *trackedWorker) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTPreCommit1)(t.Worker.SealPreCommit1(ctx, sector, ticket, pieces))
 }
 
-func (t *trackedWorker) SealPreCommit2(ctx context.Context, sector abi.SectorID, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
+func (t *trackedWorker) SealPreCommit2(ctx context.Context, sector storage.SectorRef, pc1o storage.PreCommit1Out) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTPreCommit2)(t.Worker.SealPreCommit2(ctx, sector, pc1o))
 }
 
-func (t *trackedWorker) SealCommit1(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
+func (t *trackedWorker) SealCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTCommit1)(t.Worker.SealCommit1(ctx, sector, ticket, seed, pieces, cids))
 }
 
-func (t *trackedWorker) SealCommit2(ctx context.Context, sector abi.SectorID, c1o storage.Commit1Out) (storiface.CallID, error) {
+func (t *trackedWorker) SealCommit2(ctx context.Context, sector storage.SectorRef, c1o storage.Commit1Out) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTCommit2)(t.Worker.SealCommit2(ctx, sector, c1o))
 }
 
-func (t *trackedWorker) FinalizeSector(ctx context.Context, sector abi.SectorID, keepUnsealed []storage.Range) (storiface.CallID, error) {
+func (t *trackedWorker) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTFinalize)(t.Worker.FinalizeSector(ctx, sector, keepUnsealed))
 }
 
-func (t *trackedWorker) AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
+func (t *trackedWorker) AddPiece(ctx context.Context, sector storage.SectorRef, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, sector, sealtasks.TTAddPiece)(t.Worker.AddPiece(ctx, sector, pieceSizes, newPieceSize, pieceData))
 }
 
-func (t *trackedWorker) Fetch(ctx context.Context, s abi.SectorID, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
+func (t *trackedWorker) Fetch(ctx context.Context, s storage.SectorRef, ft storiface.SectorFileType, ptype storiface.PathType, am storiface.AcquireMode) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, s, sealtasks.TTFetch)(t.Worker.Fetch(ctx, s, ft, ptype, am))
 }
 
-func (t *trackedWorker) UnsealPiece(ctx context.Context, id abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
+func (t *trackedWorker) UnsealPiece(ctx context.Context, id storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, cid cid.Cid) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, id, sealtasks.TTUnseal)(t.Worker.UnsealPiece(ctx, id, index, size, randomness, cid))
 }
 
-func (t *trackedWorker) ReadPiece(ctx context.Context, writer io.Writer, id abi.SectorID, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
+func (t *trackedWorker) ReadPiece(ctx context.Context, writer io.Writer, id storage.SectorRef, index storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (storiface.CallID, error) {
 	return t.tracker.track(t.wid, id, sealtasks.TTReadUnsealed)(t.Worker.ReadPiece(ctx, writer, id, index, size))
 }
 
diff --git a/extern/storage-sealing/checks.go b/extern/storage-sealing/checks.go
index ed7a691ef..56a55bb61 100644
--- a/extern/storage-sealing/checks.go
+++ b/extern/storage-sealing/checks.go
@@ -14,7 +14,6 @@ import (
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/crypto"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/zerocomm"
 )
 
@@ -166,23 +165,14 @@ func (m *Sealing) checkCommit(ctx context.Context, si SectorInfo, proof []byte,
 		return &ErrBadSeed{xerrors.Errorf("seed has changed")}
 	}
 
-	ss, err := m.api.StateMinerSectorSize(ctx, m.maddr, tok)
-	if err != nil {
-		return &ErrApi{err}
-	}
-	spt, err := ffiwrapper.SealProofTypeFromSectorSize(ss)
-	if err != nil {
-		return err
-	}
-
 	if *si.CommR != pci.Info.SealedCID {
 		log.Warn("on-chain sealed CID doesn't match!")
 	}
 
 	ok, err := m.verif.VerifySeal(proof2.SealVerifyInfo{
-		SectorID:              m.minerSector(si.SectorNumber),
+		SectorID:              m.minerSectorID(si.SectorNumber),
 		SealedCID:             pci.Info.SealedCID,
-		SealProof:             spt,
+		SealProof:             pci.Info.SealProof,
 		Proof:                 proof,
 		Randomness:            si.TicketValue,
 		InteractiveRandomness: si.SeedValue,
diff --git a/extern/storage-sealing/fsm.go b/extern/storage-sealing/fsm.go
index 482181dc6..83f4e2390 100644
--- a/extern/storage-sealing/fsm.go
+++ b/extern/storage-sealing/fsm.go
@@ -267,7 +267,7 @@ func (m *Sealing) plan(events []statemachine.Event, state *SectorInfo) (func(sta
 
 	*/
 
-	m.stats.updateSector(m.minerSector(state.SectorNumber), state.State)
+	m.stats.updateSector(m.minerSectorID(state.SectorNumber), state.State)
 
 	switch state.State {
 	// Happy path
@@ -394,6 +394,15 @@ func (m *Sealing) restartSectors(ctx context.Context) error {
 		return xerrors.Errorf("getting the sealing delay: %w", err)
 	}
 
+	spt, err := m.currentSealProof(ctx)
+	if err != nil {
+		return xerrors.Errorf("getting current seal proof: %w", err)
+	}
+	ssize, err := spt.SectorSize()
+	if err != nil {
+		return err
+	}
+
 	m.unsealedInfoMap.lk.Lock()
 	defer m.unsealedInfoMap.lk.Unlock()
 	for _, sector := range trackedSectors {
@@ -408,7 +417,9 @@ func (m *Sealing) restartSectors(ctx context.Context) error {
 				// something's funky here, but probably safe to move on
 				log.Warnf("sector %v was already in the unsealedInfoMap when restarting", sector.SectorNumber)
 			} else {
-				ui := UnsealedSectorInfo{}
+				ui := UnsealedSectorInfo{
+					ssize: ssize,
+				}
 				for _, p := range sector.Pieces {
 					if p.DealInfo != nil {
 						ui.numDeals++
diff --git a/extern/storage-sealing/garbage.go b/extern/storage-sealing/garbage.go
index fc8e86c55..c3b282d79 100644
--- a/extern/storage-sealing/garbage.go
+++ b/extern/storage-sealing/garbage.go
@@ -6,9 +6,10 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/specs-storage/storage"
 )
 
-func (m *Sealing) pledgeSector(ctx context.Context, sectorID abi.SectorID, existingPieceSizes []abi.UnpaddedPieceSize, sizes ...abi.UnpaddedPieceSize) ([]abi.PieceInfo, error) {
+func (m *Sealing) pledgeSector(ctx context.Context, sectorID storage.SectorRef, existingPieceSizes []abi.UnpaddedPieceSize, sizes ...abi.UnpaddedPieceSize) ([]abi.PieceInfo, error) {
 	if len(sizes) == 0 {
 		return nil, nil
 	}
@@ -47,21 +48,31 @@ func (m *Sealing) PledgeSector() error {
 		// this, as we run everything here async, and it's cancelled when the
 		// command exits
 
-		size := abi.PaddedPieceSize(m.sealer.SectorSize()).Unpadded()
+		spt, err := m.currentSealProof(ctx)
+		if err != nil {
+			log.Errorf("%+v", err)
+			return
+		}
+
+		size, err := spt.SectorSize()
+		if err != nil {
+			log.Errorf("%+v", err)
+			return
+		}
 
 		sid, err := m.sc.Next()
 		if err != nil {
 			log.Errorf("%+v", err)
 			return
 		}
-		sectorID := m.minerSector(sid)
+		sectorID := m.minerSector(spt, sid)
 		err = m.sealer.NewSector(ctx, sectorID)
 		if err != nil {
 			log.Errorf("%+v", err)
 			return
 		}
 
-		pieces, err := m.pledgeSector(ctx, sectorID, []abi.UnpaddedPieceSize{}, size)
+		pieces, err := m.pledgeSector(ctx, sectorID, []abi.UnpaddedPieceSize{}, abi.PaddedPieceSize(size).Unpadded())
 		if err != nil {
 			log.Errorf("%+v", err)
 			return
@@ -75,7 +86,7 @@ func (m *Sealing) PledgeSector() error {
 			}
 		}
 
-		if err := m.newSectorCC(sid, ps); err != nil {
+		if err := m.newSectorCC(ctx, sid, ps); err != nil {
 			log.Errorf("%+v", err)
 			return
 		}
diff --git a/extern/storage-sealing/sealing.go b/extern/storage-sealing/sealing.go
index d9953eee0..5211f8bbe 100644
--- a/extern/storage-sealing/sealing.go
+++ b/extern/storage-sealing/sealing.go
@@ -8,13 +8,15 @@ import (
 	"sync"
 	"time"
 
-	"github.com/filecoin-project/go-state-types/network"
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-datastore"
 	"github.com/ipfs/go-datastore/namespace"
 	logging "github.com/ipfs/go-log/v2"
 	"golang.org/x/xerrors"
 
+	"github.com/filecoin-project/go-state-types/network"
+	"github.com/filecoin-project/specs-storage/storage"
+
 	"github.com/filecoin-project/go-address"
 	padreader "github.com/filecoin-project/go-padreader"
 	"github.com/filecoin-project/go-state-types/abi"
@@ -53,6 +55,7 @@ type SealingAPI interface {
 	StateMinerWorkerAddress(ctx context.Context, maddr address.Address, tok TipSetToken) (address.Address, error)
 	StateMinerPreCommitDepositForPower(context.Context, address.Address, miner.SectorPreCommitInfo, TipSetToken) (big.Int, error)
 	StateMinerInitialPledgeCollateral(context.Context, address.Address, miner.SectorPreCommitInfo, TipSetToken) (big.Int, error)
+	StateMinerInfo(context.Context, address.Address, TipSetToken) (miner.MinerInfo, error)
 	StateMinerSectorAllocated(context.Context, address.Address, abi.SectorNumber, TipSetToken) (bool, error)
 	StateMarketStorageDeal(context.Context, abi.DealID, TipSetToken) (market.DealProposal, error)
 	StateNetworkVersion(ctx context.Context, tok TipSetToken) (network.Version, error)
@@ -105,6 +108,7 @@ type UnsealedSectorInfo struct {
 	// stored should always equal sum of pieceSizes.Padded()
 	stored     abi.PaddedPieceSize
 	pieceSizes []abi.UnpaddedPieceSize
+	ssize      abi.SectorSize
 }
 
 func New(api SealingAPI, fc FeeConfig, events Events, maddr address.Address, ds datastore.Batching, sealer sectorstorage.SectorManager, sc SectorIDCounter, verif ffiwrapper.Verifier, pcp PreCommitPolicy, gc GetSealingConfigFunc, notifee SectorStateNotifee) *Sealing {
@@ -151,19 +155,30 @@ func (m *Sealing) Run(ctx context.Context) error {
 func (m *Sealing) Stop(ctx context.Context) error {
 	return m.sectors.Stop(ctx)
 }
+
 func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPieceSize, r io.Reader, d DealInfo) (abi.SectorNumber, abi.PaddedPieceSize, error) {
 	log.Infof("Adding piece for deal %d (publish msg: %s)", d.DealID, d.PublishCid)
 	if (padreader.PaddedSize(uint64(size))) != size {
 		return 0, 0, xerrors.Errorf("cannot allocate unpadded piece")
 	}
 
-	if size > abi.PaddedPieceSize(m.sealer.SectorSize()).Unpadded() {
+	sp, err := m.currentSealProof(ctx)
+	if err != nil {
+		return 0, 0, xerrors.Errorf("getting current seal proof type: %w", err)
+	}
+
+	ssize, err := sp.SectorSize()
+	if err != nil {
+		return 0, 0, err
+	}
+
+	if size > abi.PaddedPieceSize(ssize).Unpadded() {
 		return 0, 0, xerrors.Errorf("piece cannot fit into a sector")
 	}
 
 	m.unsealedInfoMap.lk.Lock()
 
-	sid, pads, err := m.getSectorAndPadding(size)
+	sid, pads, err := m.getSectorAndPadding(ctx, size)
 	if err != nil {
 		m.unsealedInfoMap.lk.Unlock()
 		return 0, 0, xerrors.Errorf("getting available sector: %w", err)
@@ -185,7 +200,7 @@ func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPiec
 		return 0, 0, xerrors.Errorf("adding piece to sector: %w", err)
 	}
 
-	startPacking := m.unsealedInfoMap.infos[sid].numDeals >= getDealPerSectorLimit(m.sealer.SectorSize())
+	startPacking := m.unsealedInfoMap.infos[sid].numDeals >= getDealPerSectorLimit(ssize)
 
 	m.unsealedInfoMap.lk.Unlock()
 
@@ -201,7 +216,16 @@ func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPiec
 // Caller should hold m.unsealedInfoMap.lk
 func (m *Sealing) addPiece(ctx context.Context, sectorID abi.SectorNumber, size abi.UnpaddedPieceSize, r io.Reader, di *DealInfo) error {
 	log.Infof("Adding piece to sector %d", sectorID)
-	ppi, err := m.sealer.AddPiece(sectorstorage.WithPriority(ctx, DealSectorPriority), m.minerSector(sectorID), m.unsealedInfoMap.infos[sectorID].pieceSizes, size, r)
+	sp, err := m.currentSealProof(ctx)
+	if err != nil {
+		return xerrors.Errorf("getting current seal proof type: %w", err)
+	}
+	ssize, err := sp.SectorSize()
+	if err != nil {
+		return err
+	}
+
+	ppi, err := m.sealer.AddPiece(sectorstorage.WithPriority(ctx, DealSectorPriority), m.minerSector(sp, sectorID), m.unsealedInfoMap.infos[sectorID].pieceSizes, size, r)
 	if err != nil {
 		return xerrors.Errorf("writing piece: %w", err)
 	}
@@ -224,6 +248,7 @@ func (m *Sealing) addPiece(ctx context.Context, sectorID abi.SectorNumber, size
 		numDeals:   num,
 		stored:     ui.stored + piece.Piece.Size,
 		pieceSizes: append(ui.pieceSizes, piece.Piece.Size.Unpadded()),
+		ssize:      ssize,
 	}
 
 	return nil
@@ -257,16 +282,16 @@ func (m *Sealing) StartPacking(sectorID abi.SectorNumber) error {
 }
 
 // Caller should hold m.unsealedInfoMap.lk
-func (m *Sealing) getSectorAndPadding(size abi.UnpaddedPieceSize) (abi.SectorNumber, []abi.PaddedPieceSize, error) {
-	ss := abi.PaddedPieceSize(m.sealer.SectorSize())
+func (m *Sealing) getSectorAndPadding(ctx context.Context, size abi.UnpaddedPieceSize) (abi.SectorNumber, []abi.PaddedPieceSize, error) {
 	for k, v := range m.unsealedInfoMap.infos {
 		pads, padLength := ffiwrapper.GetRequiredPadding(v.stored, size.Padded())
-		if v.stored+size.Padded()+padLength <= ss {
+
+		if v.stored+size.Padded()+padLength <= abi.PaddedPieceSize(v.ssize) {
 			return k, pads, nil
 		}
 	}
 
-	ns, err := m.newDealSector()
+	ns, ssize, err := m.newDealSector(ctx)
 	if err != nil {
 		return 0, nil, err
 	}
@@ -275,23 +300,24 @@ func (m *Sealing) getSectorAndPadding(size abi.UnpaddedPieceSize) (abi.SectorNum
 		numDeals:   0,
 		stored:     0,
 		pieceSizes: nil,
+		ssize:      ssize,
 	}
 
 	return ns, nil, nil
 }
 
 // newDealSector creates a new sector for deal storage
-func (m *Sealing) newDealSector() (abi.SectorNumber, error) {
+func (m *Sealing) newDealSector(ctx context.Context) (abi.SectorNumber, abi.SectorSize, error) {
 	// First make sure we don't have too many 'open' sectors
 
 	cfg, err := m.getConfig()
 	if err != nil {
-		return 0, xerrors.Errorf("getting config: %w", err)
+		return 0, 0, xerrors.Errorf("getting config: %w", err)
 	}
 
 	if cfg.MaxSealingSectorsForDeals > 0 {
 		if m.stats.curSealing() > cfg.MaxSealingSectorsForDeals {
-			return 0, ErrTooManySectorsSealing
+			return 0, 0, ErrTooManySectorsSealing
 		}
 	}
 
@@ -338,36 +364,36 @@ func (m *Sealing) newDealSector() (abi.SectorNumber, error) {
 		}
 	}
 
+	spt, err := m.currentSealProof(ctx)
+	if err != nil {
+		return 0, 0, xerrors.Errorf("getting current seal proof type: %w", err)
+	}
+
 	// Now actually create a new sector
 
 	sid, err := m.sc.Next()
 	if err != nil {
-		return 0, xerrors.Errorf("getting sector number: %w", err)
+		return 0, 0, xerrors.Errorf("getting sector number: %w", err)
 	}
 
-	err = m.sealer.NewSector(context.TODO(), m.minerSector(sid))
+	err = m.sealer.NewSector(context.TODO(), m.minerSector(spt, sid))
 	if err != nil {
-		return 0, xerrors.Errorf("initializing sector: %w", err)
-	}
-
-	rt, err := ffiwrapper.SealProofTypeFromSectorSize(m.sealer.SectorSize())
-	if err != nil {
-		return 0, xerrors.Errorf("bad sector size: %w", err)
+		return 0, 0, xerrors.Errorf("initializing sector: %w", err)
 	}
 
 	log.Infof("Creating sector %d", sid)
 	err = m.sectors.Send(uint64(sid), SectorStart{
 		ID:         sid,
-		SectorType: rt,
+		SectorType: spt,
 	})
 
 	if err != nil {
-		return 0, xerrors.Errorf("starting the sector fsm: %w", err)
+		return 0, 0, xerrors.Errorf("starting the sector fsm: %w", err)
 	}
 
 	cf, err := m.getConfig()
 	if err != nil {
-		return 0, xerrors.Errorf("getting the sealing delay: %w", err)
+		return 0, 0, xerrors.Errorf("getting the sealing delay: %w", err)
 	}
 
 	if cf.WaitDealsDelay > 0 {
@@ -380,25 +406,42 @@ func (m *Sealing) newDealSector() (abi.SectorNumber, error) {
 		}()
 	}
 
-	return sid, nil
+	ssize, err := spt.SectorSize()
+	return sid, ssize, err
 }
 
 // newSectorCC accepts a slice of pieces with no deal (junk data)
-func (m *Sealing) newSectorCC(sid abi.SectorNumber, pieces []Piece) error {
-	rt, err := ffiwrapper.SealProofTypeFromSectorSize(m.sealer.SectorSize())
+func (m *Sealing) newSectorCC(ctx context.Context, sid abi.SectorNumber, pieces []Piece) error {
+	spt, err := m.currentSealProof(ctx)
 	if err != nil {
-		return xerrors.Errorf("bad sector size: %w", err)
+		return xerrors.Errorf("getting current seal proof type: %w", err)
 	}
 
 	log.Infof("Creating CC sector %d", sid)
 	return m.sectors.Send(uint64(sid), SectorStartCC{
 		ID:         sid,
 		Pieces:     pieces,
-		SectorType: rt,
+		SectorType: spt,
 	})
 }
 
-func (m *Sealing) minerSector(num abi.SectorNumber) abi.SectorID {
+func (m *Sealing) currentSealProof(ctx context.Context) (abi.RegisteredSealProof, error) {
+	mi, err := m.api.StateMinerInfo(ctx, m.maddr, nil)
+	if err != nil {
+		return 0, err
+	}
+
+	return mi.SealProofType, nil
+}
+
+func (m *Sealing) minerSector(spt abi.RegisteredSealProof, num abi.SectorNumber) storage.SectorRef {
+	return storage.SectorRef{
+		ID:        m.minerSectorID(num),
+		ProofType: spt,
+	}
+}
+
+func (m *Sealing) minerSectorID(num abi.SectorNumber) abi.SectorID {
 	mid, err := address.IDFromAddress(m.maddr)
 	if err != nil {
 		panic(err)
diff --git a/extern/storage-sealing/states_proving.go b/extern/storage-sealing/states_proving.go
index 6684c714d..de7e6c8d0 100644
--- a/extern/storage-sealing/states_proving.go
+++ b/extern/storage-sealing/states_proving.go
@@ -32,7 +32,7 @@ func (m *Sealing) handleFaultReported(ctx statemachine.Context, sector SectorInf
 }
 
 func (m *Sealing) handleRemoving(ctx statemachine.Context, sector SectorInfo) error {
-	if err := m.sealer.Remove(ctx.Context(), m.minerSector(sector.SectorNumber)); err != nil {
+	if err := m.sealer.Remove(ctx.Context(), m.minerSector(sector.SectorType, sector.SectorNumber)); err != nil {
 		return ctx.Send(SectorRemoveFailed{err})
 	}
 
diff --git a/extern/storage-sealing/states_sealing.go b/extern/storage-sealing/states_sealing.go
index a1aee4cde..fca4a8699 100644
--- a/extern/storage-sealing/states_sealing.go
+++ b/extern/storage-sealing/states_sealing.go
@@ -31,7 +31,12 @@ func (m *Sealing) handlePacking(ctx statemachine.Context, sector SectorInfo) err
 		allocated += piece.Piece.Size.Unpadded()
 	}
 
-	ubytes := abi.PaddedPieceSize(m.sealer.SectorSize()).Unpadded()
+	ssize, err := sector.SectorType.SectorSize()
+	if err != nil {
+		return err
+	}
+
+	ubytes := abi.PaddedPieceSize(ssize).Unpadded()
 
 	if allocated > ubytes {
 		return xerrors.Errorf("too much data in sector: %d > %d", allocated, ubytes)
@@ -46,7 +51,7 @@ func (m *Sealing) handlePacking(ctx statemachine.Context, sector SectorInfo) err
 		log.Warnf("Creating %d filler pieces for sector %d", len(fillerSizes), sector.SectorNumber)
 	}
 
-	fillerPieces, err := m.pledgeSector(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), sector.existingPieceSizes(), fillerSizes...)
+	fillerPieces, err := m.pledgeSector(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), sector.existingPieceSizes(), fillerSizes...)
 	if err != nil {
 		return xerrors.Errorf("filling up the sector (%v): %w", fillerSizes, err)
 	}
@@ -148,7 +153,7 @@ func (m *Sealing) handlePreCommit1(ctx statemachine.Context, sector SectorInfo)
 		//  process has just restarted and the worker had the result ready)
 	}
 
-	pc1o, err := m.sealer.SealPreCommit1(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), sector.TicketValue, sector.pieceInfos())
+	pc1o, err := m.sealer.SealPreCommit1(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), sector.TicketValue, sector.pieceInfos())
 	if err != nil {
 		return ctx.Send(SectorSealPreCommit1Failed{xerrors.Errorf("seal pre commit(1) failed: %w", err)})
 	}
@@ -159,7 +164,7 @@ func (m *Sealing) handlePreCommit1(ctx statemachine.Context, sector SectorInfo)
 }
 
 func (m *Sealing) handlePreCommit2(ctx statemachine.Context, sector SectorInfo) error {
-	cids, err := m.sealer.SealPreCommit2(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), sector.PreCommit1Out)
+	cids, err := m.sealer.SealPreCommit2(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), sector.PreCommit1Out)
 	if err != nil {
 		return ctx.Send(SectorSealPreCommit2Failed{xerrors.Errorf("seal pre commit(2) failed: %w", err)})
 	}
@@ -386,12 +391,12 @@ func (m *Sealing) handleCommitting(ctx statemachine.Context, sector SectorInfo)
 		Unsealed: *sector.CommD,
 		Sealed:   *sector.CommR,
 	}
-	c2in, err := m.sealer.SealCommit1(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), sector.TicketValue, sector.SeedValue, sector.pieceInfos(), cids)
+	c2in, err := m.sealer.SealCommit1(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), sector.TicketValue, sector.SeedValue, sector.pieceInfos(), cids)
 	if err != nil {
 		return ctx.Send(SectorComputeProofFailed{xerrors.Errorf("computing seal proof failed(1): %w", err)})
 	}
 
-	proof, err := m.sealer.SealCommit2(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), c2in)
+	proof, err := m.sealer.SealCommit2(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), c2in)
 	if err != nil {
 		return ctx.Send(SectorComputeProofFailed{xerrors.Errorf("computing seal proof failed(2): %w", err)})
 	}
@@ -492,7 +497,7 @@ func (m *Sealing) handleCommitWait(ctx statemachine.Context, sector SectorInfo)
 func (m *Sealing) handleFinalizeSector(ctx statemachine.Context, sector SectorInfo) error {
 	// TODO: Maybe wait for some finality
 
-	if err := m.sealer.FinalizeSector(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorNumber), sector.keepUnsealedRanges(false)); err != nil {
+	if err := m.sealer.FinalizeSector(sector.sealingCtx(ctx.Context()), m.minerSector(sector.SectorType, sector.SectorNumber), sector.keepUnsealedRanges(false)); err != nil {
 		return ctx.Send(SectorFinalizeFailed{xerrors.Errorf("finalize sector: %w", err)})
 	}
 
@@ -503,7 +508,7 @@ func (m *Sealing) handleProvingSector(ctx statemachine.Context, sector SectorInf
 	// TODO: track sector health / expiration
 	log.Infof("Proving sector %d", sector.SectorNumber)
 
-	if err := m.sealer.ReleaseUnsealed(ctx.Context(), m.minerSector(sector.SectorNumber), sector.keepUnsealedRanges(true)); err != nil {
+	if err := m.sealer.ReleaseUnsealed(ctx.Context(), m.minerSector(sector.SectorType, sector.SectorNumber), sector.keepUnsealedRanges(true)); err != nil {
 		log.Error(err)
 	}
 
diff --git a/go.mod b/go.mod
index 2becc2453..f0ffa4845 100644
--- a/go.mod
+++ b/go.mod
@@ -30,7 +30,7 @@ require (
 	github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03
 	github.com/filecoin-project/go-data-transfer v1.1.0
 	github.com/filecoin-project/go-fil-commcid v0.0.0-20200716160307-8f644712406f
-	github.com/filecoin-project/go-fil-markets v1.0.4
+	github.com/filecoin-project/go-fil-markets v1.0.5-0.20201113164554-c5eba40d5335
 	github.com/filecoin-project/go-jsonrpc v0.1.2-0.20201008195726-68c6a2704e49
 	github.com/filecoin-project/go-multistore v0.0.3
 	github.com/filecoin-project/go-padreader v0.0.0-20200903213702-ed5fae088b20
@@ -41,7 +41,7 @@ require (
 	github.com/filecoin-project/go-storedcounter v0.0.0-20200421200003-1c99c62e8a5b
 	github.com/filecoin-project/specs-actors v0.9.13
 	github.com/filecoin-project/specs-actors/v2 v2.3.0
-	github.com/filecoin-project/specs-storage v0.1.1-0.20200907031224-ed2e5cd13796
+	github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506
 	github.com/filecoin-project/test-vectors/schema v0.0.5
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1
 	github.com/go-kit/kit v0.10.0
@@ -136,9 +136,9 @@ require (
 	go.uber.org/fx v1.9.0
 	go.uber.org/multierr v1.5.0
 	go.uber.org/zap v1.16.0
-	golang.org/x/net v0.0.0-20200707034311-ab3426394381
-	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
-	golang.org/x/sys v0.0.0-20200926100807-9d91bd62050c
+	golang.org/x/net v0.0.0-20201021035429-f5854403a974
+	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
+	golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f
 	golang.org/x/time v0.0.0-20191024005414-555d28b269f0
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	gopkg.in/cheggaaa/pb.v1 v1.0.28
diff --git a/go.sum b/go.sum
index b84a1ad3d..49a1cacbb 100644
--- a/go.sum
+++ b/go.sum
@@ -255,8 +255,8 @@ github.com/filecoin-project/go-ds-versioning v0.1.0 h1:y/X6UksYTsK8TLCI7rttCKEvl
 github.com/filecoin-project/go-ds-versioning v0.1.0/go.mod h1:mp16rb4i2QPmxBnmanUx8i/XANp+PFCCJWiAb+VW4/s=
 github.com/filecoin-project/go-fil-commcid v0.0.0-20200716160307-8f644712406f h1:GxJzR3oRIMTPtpZ0b7QF8FKPK6/iPAc7trhlL5k/g+s=
 github.com/filecoin-project/go-fil-commcid v0.0.0-20200716160307-8f644712406f/go.mod h1:Eaox7Hvus1JgPrL5+M3+h7aSPHc0cVqpSxA+TxIEpZQ=
-github.com/filecoin-project/go-fil-markets v1.0.4 h1:OGEoNppGcAjzIznDHFb/yy7ypVgHMO2CQZg6E9nViWI=
-github.com/filecoin-project/go-fil-markets v1.0.4/go.mod h1:AJySOJC00JRWEZzRG2KsfUnqEf5ITXxeX09BE9N4f9c=
+github.com/filecoin-project/go-fil-markets v1.0.5-0.20201113164554-c5eba40d5335 h1:DF8eu0WdEBnSVdu71+jfT4YMk6fO7AIJk2ZiWd3l15c=
+github.com/filecoin-project/go-fil-markets v1.0.5-0.20201113164554-c5eba40d5335/go.mod h1:AJySOJC00JRWEZzRG2KsfUnqEf5ITXxeX09BE9N4f9c=
 github.com/filecoin-project/go-hamt-ipld v0.1.5 h1:uoXrKbCQZ49OHpsTCkrThPNelC4W3LPEk0OrS/ytIBM=
 github.com/filecoin-project/go-hamt-ipld v0.1.5 h1:uoXrKbCQZ49OHpsTCkrThPNelC4W3LPEk0OrS/ytIBM=
 github.com/filecoin-project/go-hamt-ipld v0.1.5/go.mod h1:6Is+ONR5Cd5R6XZoCse1CWaXZc0Hdb/JeX+EQCQzX24=
@@ -291,8 +291,8 @@ github.com/filecoin-project/specs-actors v0.9.13/go.mod h1:TS1AW/7LbG+615j4NsjMK
 github.com/filecoin-project/specs-actors/v2 v2.0.1/go.mod h1:v2NZVYinNIKA9acEMBm5wWXxqv5+frFEbekBFemYghY=
 github.com/filecoin-project/specs-actors/v2 v2.3.0 h1:V7lHeF2ylfFi84F4y80u5FE4BpPHYGvB71kLrhXkJto=
 github.com/filecoin-project/specs-actors/v2 v2.3.0/go.mod h1:UuJQLoTx/HPvvWeqlIFmC/ywlOLHNe8SNQ3OunFbu2Y=
-github.com/filecoin-project/specs-storage v0.1.1-0.20200907031224-ed2e5cd13796 h1:dJsTPWpG2pcTeojO2pyn0c6l+x/3MZYCBgo/9d11JEk=
-github.com/filecoin-project/specs-storage v0.1.1-0.20200907031224-ed2e5cd13796/go.mod h1:nJRRM7Aa9XVvygr3W9k6xGF46RWzr2zxF/iGoAIfA/g=
+github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506 h1:Ur/l2+6qN+lQiqjozWWc5p9UDaAMDZKTlDS98oRnlIw=
+github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506/go.mod h1:nJRRM7Aa9XVvygr3W9k6xGF46RWzr2zxF/iGoAIfA/g=
 github.com/filecoin-project/test-vectors/schema v0.0.5 h1:w3zHQhzM4pYxJDl21avXjOKBLF8egrvwUwjpT8TquDg=
 github.com/filecoin-project/test-vectors/schema v0.0.5/go.mod h1:iQ9QXLpYWL3m7warwvK1JC/pTri8mnfEmKygNDqqY6E=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
@@ -1497,8 +1497,8 @@ github.com/whyrusleeping/timecache v0.0.0-20160911033111-cfcb2f1abfee/go.mod h1:
 github.com/whyrusleeping/yamux v1.1.5/go.mod h1:E8LnQQ8HKx5KD29HZFUwM1PxCOdPRzGwur1mcYhXcD8=
 github.com/x-cray/logrus-prefixed-formatter v0.5.2/go.mod h1:2duySbKsL6M18s5GU7VPsoEPHyzalCE06qoARUCeBBE=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
-github.com/xlab/c-for-go v0.0.0-20201002084316-c134bfab968f h1:nMhj+x/m7ZQsHBz0L3gpytp0v6ogokdbrQDnhB8Kh7s=
-github.com/xlab/c-for-go v0.0.0-20201002084316-c134bfab968f/go.mod h1:h/1PEBwj7Ym/8kOuMWvO2ujZ6Lt+TMbySEXNhjjR87I=
+github.com/xlab/c-for-go v0.0.0-20201112171043-ea6dce5809cb h1:/7/dQyiKnxAOj9L69FhST7uMe17U015XPzX7cy+5ykM=
+github.com/xlab/c-for-go v0.0.0-20201112171043-ea6dce5809cb/go.mod h1:pbNsDSxn1ICiNn9Ct4ZGNrwzfkkwYbx/lw8VuyutFIg=
 github.com/xlab/pkgconfig v0.0.0-20170226114623-cea12a0fd245 h1:Sw125DKxZhPUI4JLlWugkzsrlB50jR9v2khiD9FxuSo=
 github.com/xlab/pkgconfig v0.0.0-20170226114623-cea12a0fd245/go.mod h1:C+diUUz7pxhNY6KAoLgrTYARGWnt82zWTylZlxT92vk=
 github.com/xorcare/golden v0.6.0/go.mod h1:7T39/ZMvaSEZlBPoYfVFmsBLmUl3uz9IuzWj/U6FtvQ=
@@ -1506,6 +1506,7 @@ github.com/xorcare/golden v0.6.1-0.20191112154924-b87f686d7542 h1:oWgZJmC1DorFZD
 github.com/xorcare/golden v0.6.1-0.20191112154924-b87f686d7542/go.mod h1:7T39/ZMvaSEZlBPoYfVFmsBLmUl3uz9IuzWj/U6FtvQ=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/zondax/hid v0.9.0 h1:eiT3P6vNxAEVxXMw66eZUAAnU2zD33JBkfG/EnfAKl8=
 github.com/zondax/hid v0.9.0/go.mod h1:l5wttcP0jwtdLjqjMMWFVEE7d1zO0jvSPA9OPZxWpEM=
 github.com/zondax/ledger-go v0.12.1 h1:hYRcyznPRJp+5mzF2sazTLP2nGvGjYDD2VzhHhFomLU=
@@ -1596,6 +1597,7 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/exp v0.0.0-20181106170214-d68db9428509/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -1670,6 +1672,8 @@ golang.org/x/net v0.0.0-20200602114024-627f9648deb9/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974 h1:IX6qOQeG5uLjB/hjjwjedwfjND0hgjPMMyO1RoIXQNI=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181017192945-9dcd33a902f4/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -1687,6 +1691,8 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 h1:qwRHBd0NqMbJxfbotnDhm2ByMI1Shq4Y6oRJo21SGJA=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9 h1:SQFwaSi55rU7vdNs9Yr0Z324VNlrF+0wMqRXT4St8ck=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -1753,11 +1759,15 @@ golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200812155832-6a926be9bd1d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200926100807-9d91bd62050c h1:38q6VNPWR010vN82/SB121GujZNIfAUb4YttE2rhGuc=
 golang.org/x/sys v0.0.0-20200926100807-9d91bd62050c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -1803,6 +1813,8 @@ golang.org/x/tools v0.0.0-20200216192241-b320d3a0f5a2/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200711155855-7342f9734a7d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200827010519-17fd2f27a9e3 h1:r3P/5xOq/dK1991B65Oy6E1fRF/2d/fSYZJ/fXGVfJc=
 golang.org/x/tools v0.0.0-20200827010519-17fd2f27a9e3/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20201112185108-eeaa07dd7696 h1:Bfazo+enXJET5SbHeh95NtxabJF6fJ9r/jpfRJgd3j4=
+golang.org/x/tools v0.0.0-20201112185108-eeaa07dd7696/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1931,8 +1943,13 @@ launchpad.net/gocheck v0.0.0-20140225173054-000000000087 h1:Izowp2XBH6Ya6rv+hqbc
 launchpad.net/gocheck v0.0.0-20140225173054-000000000087/go.mod h1:hj7XX3B/0A+80Vse0e+BUHsHMTEhd0O4cpUHr/e/BUM=
 modernc.org/cc v1.0.0 h1:nPibNuDEx6tvYrUAtvDTTw98rx5juGsa5zuDnKwEEQQ=
 modernc.org/cc v1.0.0/go.mod h1:1Sk4//wdnYJiUIxnW8ddKpaOJCF37yAdqYnkxUpaYxw=
+modernc.org/fileutil v1.0.0/go.mod h1:JHsWpkrk/CnVV1H/eGlFf85BEpfkrp56ro8nojIq9Q8=
 modernc.org/golex v1.0.0 h1:wWpDlbK8ejRfSyi0frMyhilD3JBvtcx2AdGDnU+JtsE=
 modernc.org/golex v1.0.0/go.mod h1:b/QX9oBD/LhixY6NDh+IdGv17hgB+51fET1i2kPSmvk=
+modernc.org/golex v1.0.1 h1:EYKY1a3wStt0RzHaH8mdSRNg78Ub0OHxYfCRWw35YtM=
+modernc.org/golex v1.0.1/go.mod h1:QCA53QtsT1NdGkaZZkF5ezFwk4IXh4BGNafAARTC254=
+modernc.org/lex v1.0.0/go.mod h1:G6rxMTy3cH2iA0iXL/HRRv4Znu8MK4higxph/lE7ypk=
+modernc.org/lexer v1.0.0/go.mod h1:F/Dld0YKYdZCLQ7bD0USbWL4YKCyTDRDHiDTOs0q0vk=
 modernc.org/mathutil v1.1.1 h1:FeylZSVX8S+58VsyJlkEj2bcpdytmp9MmDKZkKx8OIE=
 modernc.org/mathutil v1.1.1/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
 modernc.org/strutil v1.1.0 h1:+1/yCzZxY2pZwwrsbH+4T7BQMoLQ9QiBshRC9eicYsc=
diff --git a/markets/retrievaladapter/provider.go b/markets/retrievaladapter/provider.go
index 674ec4793..440e2a480 100644
--- a/markets/retrievaladapter/provider.go
+++ b/markets/retrievaladapter/provider.go
@@ -15,6 +15,7 @@ import (
 	"github.com/filecoin-project/go-fil-markets/retrievalmarket"
 	"github.com/filecoin-project/go-fil-markets/shared"
 	"github.com/filecoin-project/go-state-types/abi"
+	specstorage "github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/ipfs/go-cid"
 )
@@ -52,9 +53,12 @@ func (rpn *retrievalProviderNode) UnsealSector(ctx context.Context, sectorID abi
 		return nil, err
 	}
 
-	sid := abi.SectorID{
-		Miner:  abi.ActorID(mid),
-		Number: sectorID,
+	ref := specstorage.SectorRef{
+		ID: abi.SectorID{
+			Miner:  abi.ActorID(mid),
+			Number: sectorID,
+		},
+		ProofType: si.SectorType,
 	}
 
 	r, w := io.Pipe()
@@ -63,7 +67,7 @@ func (rpn *retrievalProviderNode) UnsealSector(ctx context.Context, sectorID abi
 		if si.CommD != nil {
 			commD = *si.CommD
 		}
-		err := rpn.sealer.ReadPiece(ctx, w, sid, storiface.UnpaddedByteIndex(offset), length, si.TicketValue, commD)
+		err := rpn.sealer.ReadPiece(ctx, w, ref, storiface.UnpaddedByteIndex(offset), length, si.TicketValue, commD)
 		_ = w.CloseWithError(err)
 	}()
 
diff --git a/markets/storageadapter/provider.go b/markets/storageadapter/provider.go
index ecef1a584..cfff6cfe1 100644
--- a/markets/storageadapter/provider.go
+++ b/markets/storageadapter/provider.go
@@ -167,6 +167,19 @@ func (n *ProviderNodeAdapter) GetMinerWorkerAddress(ctx context.Context, miner a
 	return mi.Worker, nil
 }
 
+func (n *ProviderNodeAdapter) GetProofType(ctx context.Context, miner address.Address, tok shared.TipSetToken) (abi.RegisteredSealProof, error) {
+	tsk, err := types.TipSetKeyFromBytes(tok)
+	if err != nil {
+		return 0, err
+	}
+
+	mi, err := n.StateMinerInfo(ctx, miner, tsk)
+	if err != nil {
+		return 0, err
+	}
+	return mi.SealProofType, nil
+}
+
 func (n *ProviderNodeAdapter) SignBytes(ctx context.Context, signer address.Address, b []byte) (*crypto.Signature, error) {
 	signer, err := n.StateAccountKey(ctx, signer, types.EmptyTSK)
 	if err != nil {
diff --git a/node/builder.go b/node/builder.go
index 5ae7b8fea..8c49e44ad 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -8,6 +8,7 @@ import (
 
 	metricsi "github.com/ipfs/go-metrics-interface"
 
+	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/lotus/chain"
 	"github.com/filecoin-project/lotus/chain/exchange"
 	"github.com/filecoin-project/lotus/chain/store"
@@ -339,7 +340,7 @@ func Online() Option {
 			Override(new(stores.SectorIndex), From(new(*stores.Index))),
 			Override(new(dtypes.MinerID), modules.MinerID),
 			Override(new(dtypes.MinerAddress), modules.MinerAddress),
-			Override(new(*ffiwrapper.Config), modules.ProofsConfig),
+			Override(new(abi.RegisteredSealProof), modules.SealProofType),
 			Override(new(stores.LocalStorage), From(new(repo.LockedRepo))),
 			Override(new(sealing.SectorIDCounter), modules.SectorIDCounter),
 			Override(new(*sectorstorage.Manager), modules.SectorStorage),
diff --git a/node/impl/client/client.go b/node/impl/client/client.go
index 1e3374950..ef8e9e022 100644
--- a/node/impl/client/client.go
+++ b/node/impl/client/client.go
@@ -43,7 +43,6 @@ import (
 	"github.com/filecoin-project/go-multistore"
 	"github.com/filecoin-project/go-state-types/abi"
 
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	marketevents "github.com/filecoin-project/lotus/markets/loggers"
 
 	"github.com/filecoin-project/lotus/api"
@@ -141,11 +140,6 @@ func (a *API) ClientStartDeal(ctx context.Context, params *api.StartDealParams)
 		return nil, xerrors.Errorf("failed getting miner's deadline info: %w", err)
 	}
 
-	rt, err := ffiwrapper.SealProofTypeFromSectorSize(mi.SectorSize)
-	if err != nil {
-		return nil, xerrors.Errorf("bad sector size: %w", err)
-	}
-
 	if uint64(params.Data.PieceSize.Padded()) > uint64(mi.SectorSize) {
 		return nil, xerrors.New("data doesn't fit in a sector")
 	}
@@ -171,7 +165,7 @@ func (a *API) ClientStartDeal(ctx context.Context, params *api.StartDealParams)
 		EndEpoch:      calcDealExpiration(params.MinBlocksDuration, md, dealStart),
 		Price:         params.EpochPrice,
 		Collateral:    params.ProviderCollateral,
-		Rt:            rt,
+		Rt:            mi.SealProofType,
 		FastRetrieval: params.FastRetrieval,
 		VerifiedDeal:  params.VerifiedDeal,
 		StoreID:       storeID,
@@ -647,7 +641,7 @@ func (a *API) ClientQueryAsk(ctx context.Context, p peer.ID, miner address.Addre
 
 func (a *API) ClientCalcCommP(ctx context.Context, inpath string) (*api.CommPRet, error) {
 
-	// Hard-code the sector size to 32GiB, because:
+	// Hard-code the sector type to 32GiBV1_1, because:
 	// - pieceio.GeneratePieceCommitment requires a RegisteredSealProof
 	// - commP itself is sector-size independent, with rather low probability of that changing
 	//   ( note how the final rust call is identical for every RegSP type )
@@ -655,12 +649,7 @@ func (a *API) ClientCalcCommP(ctx context.Context, inpath string) (*api.CommPRet
 	//
 	// IF/WHEN this changes in the future we will have to be able to calculate
 	// "old style" commP, and thus will need to introduce a version switch or similar
-	arbitrarySectorSize := abi.SectorSize(32 << 30)
-
-	rt, err := ffiwrapper.SealProofTypeFromSectorSize(arbitrarySectorSize)
-	if err != nil {
-		return nil, xerrors.Errorf("bad sector size: %w", err)
-	}
+	arbitraryProofType := abi.RegisteredSealProof_StackedDrg32GiBV1_1
 
 	rdr, err := os.Open(inpath)
 	if err != nil {
@@ -673,7 +662,7 @@ func (a *API) ClientCalcCommP(ctx context.Context, inpath string) (*api.CommPRet
 		return nil, err
 	}
 
-	commP, pieceSize, err := pieceio.GeneratePieceCommitment(rt, rdr, uint64(stat.Size()))
+	commP, pieceSize, err := pieceio.GeneratePieceCommitment(arbitraryProofType, rdr, uint64(stat.Size()))
 
 	if err != nil {
 		return nil, xerrors.Errorf("computing commP failed: %w", err)
diff --git a/node/impl/full/state.go b/node/impl/full/state.go
index 126ff0d7b..5e01eaa5b 100644
--- a/node/impl/full/state.go
+++ b/node/impl/full/state.go
@@ -123,7 +123,12 @@ func (a *StateAPI) StateMinerActiveSectors(ctx context.Context, maddr address.Ad
 }
 
 func (m *StateModule) StateMinerInfo(ctx context.Context, actor address.Address, tsk types.TipSetKey) (miner.MinerInfo, error) {
-	act, err := m.StateManager.LoadActorTsk(ctx, actor, tsk)
+	ts, err := m.Chain.GetTipSetFromKey(tsk)
+	if err != nil {
+		return miner.MinerInfo{}, xerrors.Errorf("failed to load tipset: %w", err)
+	}
+
+	act, err := m.StateManager.LoadActor(ctx, actor, ts)
 	if err != nil {
 		return miner.MinerInfo{}, xerrors.Errorf("failed to load miner actor: %w", err)
 	}
@@ -133,7 +138,16 @@ func (m *StateModule) StateMinerInfo(ctx context.Context, actor address.Address,
 		return miner.MinerInfo{}, xerrors.Errorf("failed to load miner actor state: %w", err)
 	}
 
-	return mas.Info()
+	// TODO: You know, this is terrible.
+	// I mean, we _really_ shouldn't do this. Maybe we should convert somewhere else?
+	info, err := mas.Info()
+	if err != nil {
+		return miner.MinerInfo{}, err
+	}
+	if m.StateManager.GetNtwkVersion(ctx, ts.Height()) >= network.Version7 && info.SealProofType < abi.RegisteredSealProof_StackedDrg2KiBV1_1 {
+		info.SealProofType += abi.RegisteredSealProof_StackedDrg2KiBV1_1
+	}
+	return info, nil
 }
 
 func (a *StateAPI) StateMinerDeadlines(ctx context.Context, m address.Address, tsk types.TipSetKey) ([]api.Deadline, error) {
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index b90734e3c..89c4bbb8a 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -24,7 +24,6 @@ import (
 	"github.com/filecoin-project/go-state-types/big"
 
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/fsutil"
 	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
@@ -43,7 +42,6 @@ import (
 type StorageMinerAPI struct {
 	common.CommonAPI
 
-	ProofsConfig *ffiwrapper.Config
 	SectorBlocks *sectorblocks.SectorBlocks
 
 	PieceStore        dtypes.ProviderPieceStore
diff --git a/node/modules/storageminer.go b/node/modules/storageminer.go
index a612b142b..cd71f40fc 100644
--- a/node/modules/storageminer.go
+++ b/node/modules/storageminer.go
@@ -83,8 +83,8 @@ func minerAddrFromDS(ds dtypes.MetadataDS) (address.Address, error) {
 	return address.NewFromBytes(maddrb)
 }
 
-func GetParams(sbc *ffiwrapper.Config) error {
-	ssize, err := sbc.SealProofType.SectorSize()
+func GetParams(spt abi.RegisteredSealProof) error {
+	ssize, err := spt.SectorSize()
 	if err != nil {
 		return err
 	}
@@ -95,6 +95,7 @@ func GetParams(sbc *ffiwrapper.Config) error {
 		return nil
 	}
 
+	// TODO: We should fetch the params for the actual proof type, not just based on the size.
 	if err := paramfetch.GetParams(context.TODO(), build.ParametersJSON(), uint64(ssize)); err != nil {
 		return xerrors.Errorf("fetching proof parameters: %w", err)
 	}
@@ -119,22 +120,13 @@ func StorageNetworkName(ctx helpers.MetricsCtx, a lapi.FullNode) (dtypes.Network
 	return a.StateNetworkName(ctx)
 }
 
-func ProofsConfig(maddr dtypes.MinerAddress, fnapi lapi.FullNode) (*ffiwrapper.Config, error) {
+func SealProofType(maddr dtypes.MinerAddress, fnapi lapi.FullNode) (abi.RegisteredSealProof, error) {
 	mi, err := fnapi.StateMinerInfo(context.TODO(), address.Address(maddr), types.EmptyTSK)
 	if err != nil {
-		return nil, err
+		return 0, err
 	}
 
-	spt, err := ffiwrapper.SealProofTypeFromSectorSize(mi.SectorSize)
-	if err != nil {
-		return nil, xerrors.Errorf("bad sector size: %w", err)
-	}
-
-	sb := &ffiwrapper.Config{
-		SealProofType: spt,
-	}
-
-	return sb, nil
+	return mi.SealProofType, nil
 }
 
 type sidsc struct {
@@ -512,7 +504,6 @@ func BasicDealFilter(user dtypes.StorageDealFilter) func(onlineOk dtypes.Conside
 }
 
 func StorageProvider(minerAddress dtypes.MinerAddress,
-	ffiConfig *ffiwrapper.Config,
 	storedAsk *storedask.StoredAsk,
 	h host.Host, ds dtypes.MetadataDS,
 	mds dtypes.StagingMultiDstore,
@@ -530,7 +521,7 @@ func StorageProvider(minerAddress dtypes.MinerAddress,
 
 	opt := storageimpl.CustomDealDecisionLogic(storageimpl.DealDeciderFunc(df))
 
-	return storageimpl.NewProvider(net, namespace.Wrap(ds, datastore.NewKey("/deals/provider")), store, mds, pieceStore, dataTransfer, spn, address.Address(minerAddress), ffiConfig.SealProofType, storedAsk, opt)
+	return storageimpl.NewProvider(net, namespace.Wrap(ds, datastore.NewKey("/deals/provider")), store, mds, pieceStore, dataTransfer, spn, address.Address(minerAddress), storedAsk, opt)
 }
 
 func RetrievalDealFilter(userFilter dtypes.RetrievalDealFilter) func(onlineOk dtypes.ConsiderOnlineRetrievalDealsConfigFunc,
@@ -595,13 +586,13 @@ func RetrievalProvider(h host.Host,
 var WorkerCallsPrefix = datastore.NewKey("/worker/calls")
 var ManagerWorkPrefix = datastore.NewKey("/stmgr/calls")
 
-func SectorStorage(mctx helpers.MetricsCtx, lc fx.Lifecycle, ls stores.LocalStorage, si stores.SectorIndex, cfg *ffiwrapper.Config, sc sectorstorage.SealerConfig, urls sectorstorage.URLs, sa sectorstorage.StorageAuth, ds dtypes.MetadataDS) (*sectorstorage.Manager, error) {
+func SectorStorage(mctx helpers.MetricsCtx, lc fx.Lifecycle, ls stores.LocalStorage, si stores.SectorIndex, sc sectorstorage.SealerConfig, urls sectorstorage.URLs, sa sectorstorage.StorageAuth, ds dtypes.MetadataDS) (*sectorstorage.Manager, error) {
 	ctx := helpers.LifecycleCtx(mctx, lc)
 
 	wsts := statestore.New(namespace.Wrap(ds, WorkerCallsPrefix))
 	smsts := statestore.New(namespace.Wrap(ds, ManagerWorkPrefix))
 
-	sst, err := sectorstorage.New(ctx, ls, si, cfg, sc, urls, sa, wsts, smsts)
+	sst, err := sectorstorage.New(ctx, ls, si, sc, urls, sa, wsts, smsts)
 	if err != nil {
 		return nil, err
 	}
diff --git a/node/node_test.go b/node/node_test.go
index e553e83b2..b8009aa78 100644
--- a/node/node_test.go
+++ b/node/node_test.go
@@ -93,6 +93,22 @@ func TestDealMining(t *testing.T) {
 	test.TestDealMining(t, builder.MockSbBuilder, 50*time.Millisecond, false)
 }
 
+func TestSDRUpgrade(t *testing.T) {
+	logging.SetLogLevel("miner", "ERROR")
+	logging.SetLogLevel("chainstore", "ERROR")
+	logging.SetLogLevel("chain", "ERROR")
+	logging.SetLogLevel("sub", "ERROR")
+	logging.SetLogLevel("storageminer", "ERROR")
+
+	oldDelay := policy.GetPreCommitChallengeDelay()
+	policy.SetPreCommitChallengeDelay(5)
+	t.Cleanup(func() {
+		policy.SetPreCommitChallengeDelay(oldDelay)
+	})
+
+	test.TestSDRUpgrade(t, builder.MockSbBuilder, 50*time.Millisecond)
+}
+
 func TestPledgeSectors(t *testing.T) {
 	logging.SetLogLevel("miner", "ERROR")
 	logging.SetLogLevel("chainstore", "ERROR")
diff --git a/node/test/builder.go b/node/test/builder.go
index 491d6b7fe..f6599cf23 100644
--- a/node/test/builder.go
+++ b/node/test/builder.go
@@ -26,7 +26,6 @@ import (
 	"github.com/filecoin-project/lotus/chain"
 	"github.com/filecoin-project/lotus/chain/actors"
 	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
-	"github.com/filecoin-project/lotus/chain/actors/policy"
 	"github.com/filecoin-project/lotus/chain/gen"
 	genesis2 "github.com/filecoin-project/lotus/chain/gen/genesis"
 	"github.com/filecoin-project/lotus/chain/messagepool"
@@ -356,7 +355,7 @@ func mockSbBuilderOpts(t *testing.T, fullOpts []test.FullNodeOpts, storage []tes
 			preseals = test.GenesisPreseals
 		}
 
-		genm, k, err := mockstorage.PreSeal(2048, maddr, preseals)
+		genm, k, err := mockstorage.PreSeal(abi.RegisteredSealProof_StackedDrg2KiBV1, maddr, preseals)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -458,7 +457,7 @@ func mockSbBuilderOpts(t *testing.T, fullOpts []test.FullNodeOpts, storage []tes
 
 		storers[i] = CreateTestStorageNode(ctx, t, genms[i].Worker, maddrs[i], pidKeys[i], f, mn, node.Options(
 			node.Override(new(sectorstorage.SectorManager), func() (sectorstorage.SectorManager, error) {
-				return mock.NewMockSectorMgr(policy.GetDefaultSectorSize(), sectors), nil
+				return mock.NewMockSectorMgr(sectors), nil
 			}),
 			node.Override(new(ffiwrapper.Verifier), mock.MockVerifier),
 			node.Unset(new(*sectorstorage.Manager)),
diff --git a/storage/adapter_storage_miner.go b/storage/adapter_storage_miner.go
index 2279a9201..071ad30df 100644
--- a/storage/adapter_storage_miner.go
+++ b/storage/adapter_storage_miner.go
@@ -39,13 +39,8 @@ func NewSealingAPIAdapter(api storageMinerApi) SealingAPIAdapter {
 }
 
 func (s SealingAPIAdapter) StateMinerSectorSize(ctx context.Context, maddr address.Address, tok sealing.TipSetToken) (abi.SectorSize, error) {
-	tsk, err := types.TipSetKeyFromBytes(tok)
-	if err != nil {
-		return 0, xerrors.Errorf("failed to unmarshal TipSetToken to TipSetKey: %w", err)
-	}
-
 	// TODO: update storage-fsm to just StateMinerInfo
-	mi, err := s.delegate.StateMinerInfo(ctx, maddr, tsk)
+	mi, err := s.StateMinerInfo(ctx, maddr, tok)
 	if err != nil {
 		return 0, err
 	}
@@ -70,14 +65,19 @@ func (s SealingAPIAdapter) StateMinerInitialPledgeCollateral(ctx context.Context
 	return s.delegate.StateMinerInitialPledgeCollateral(ctx, a, pci, tsk)
 }
 
-func (s SealingAPIAdapter) StateMinerWorkerAddress(ctx context.Context, maddr address.Address, tok sealing.TipSetToken) (address.Address, error) {
+func (s SealingAPIAdapter) StateMinerInfo(ctx context.Context, maddr address.Address, tok sealing.TipSetToken) (miner.MinerInfo, error) {
 	tsk, err := types.TipSetKeyFromBytes(tok)
 	if err != nil {
-		return address.Undef, xerrors.Errorf("failed to unmarshal TipSetToken to TipSetKey: %w", err)
+		return miner.MinerInfo{}, xerrors.Errorf("failed to unmarshal TipSetToken to TipSetKey: %w", err)
 	}
 
 	// TODO: update storage-fsm to just StateMinerInfo
-	mi, err := s.delegate.StateMinerInfo(ctx, maddr, tsk)
+	return s.delegate.StateMinerInfo(ctx, maddr, tsk)
+}
+
+func (s SealingAPIAdapter) StateMinerWorkerAddress(ctx context.Context, maddr address.Address, tok sealing.TipSetToken) (address.Address, error) {
+	// TODO: update storage-fsm to just StateMinerInfo
+	mi, err := s.StateMinerInfo(ctx, maddr, tok)
 	if err != nil {
 		return address.Undef, err
 	}
diff --git a/storage/miner.go b/storage/miner.go
index 378c12b84..daeb0ef20 100644
--- a/storage/miner.go
+++ b/storage/miner.go
@@ -214,12 +214,7 @@ func NewWinningPoStProver(api api.FullNode, prover storage.Prover, verifier ffiw
 		return nil, xerrors.Errorf("getting sector size: %w", err)
 	}
 
-	spt, err := ffiwrapper.SealProofTypeFromSectorSize(mi.SectorSize)
-	if err != nil {
-		return nil, err
-	}
-
-	wpt, err := spt.RegisteredWinningPoStProof()
+	wpt, err := mi.SealProofType.RegisteredWinningPoStProof()
 	if err != nil {
 		return nil, err
 	}
diff --git a/storage/mockstorage/preseal.go b/storage/mockstorage/preseal.go
index 0417405c8..d119c273f 100644
--- a/storage/mockstorage/preseal.go
+++ b/storage/mockstorage/preseal.go
@@ -13,17 +13,21 @@ import (
 
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/chain/wallet"
-	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/sector-storage/zerocomm"
 	"github.com/filecoin-project/lotus/genesis"
 )
 
-func PreSeal(ssize abi.SectorSize, maddr address.Address, sectors int) (*genesis.Miner, *types.KeyInfo, error) {
+func PreSeal(spt abi.RegisteredSealProof, maddr address.Address, sectors int) (*genesis.Miner, *types.KeyInfo, error) {
 	k, err := wallet.GenerateKey(types.KTBLS)
 	if err != nil {
 		return nil, nil, err
 	}
 
+	ssize, err := spt.SectorSize()
+	if err != nil {
+		return nil, nil, err
+	}
+
 	genm := &genesis.Miner{
 		ID:            maddr,
 		Owner:         k.Address,
@@ -34,15 +38,10 @@ func PreSeal(ssize abi.SectorSize, maddr address.Address, sectors int) (*genesis
 		Sectors:       make([]*genesis.PreSeal, sectors),
 	}
 
-	st, err := ffiwrapper.SealProofTypeFromSectorSize(ssize)
-	if err != nil {
-		return nil, nil, err
-	}
-
 	for i := range genm.Sectors {
 		preseal := &genesis.PreSeal{}
 
-		preseal.ProofType = st
+		preseal.ProofType = spt
 		preseal.CommD = zerocomm.ZeroPieceCommitment(abi.PaddedPieceSize(ssize).Unpadded())
 		d, _ := commcid.CIDToPieceCommitmentV1(preseal.CommD)
 		r := mock.CommDR(d)
diff --git a/storage/wdpost_run.go b/storage/wdpost_run.go
index f1da4f221..b871db060 100644
--- a/storage/wdpost_run.go
+++ b/storage/wdpost_run.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/filecoin-project/go-bitfield"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
@@ -188,24 +189,30 @@ func (s *WindowPoStScheduler) runSubmitPoST(
 	return submitErr
 }
 
-func (s *WindowPoStScheduler) checkSectors(ctx context.Context, check bitfield.BitField) (bitfield.BitField, error) {
+func (s *WindowPoStScheduler) checkSectors(ctx context.Context, check bitfield.BitField, tsk types.TipSetKey) (bitfield.BitField, error) {
 	mid, err := address.IDFromAddress(s.actor)
 	if err != nil {
 		return bitfield.BitField{}, err
 	}
 
-	sectors := make(map[abi.SectorID]struct{})
-	var tocheck []abi.SectorID
-	err = check.ForEach(func(snum uint64) error {
-		s := abi.SectorID{
-			Miner:  abi.ActorID(mid),
-			Number: abi.SectorNumber(snum),
-		}
+	sectorInfos, err := s.api.StateMinerSectors(ctx, s.actor, &check, tsk)
+	if err != nil {
+		return bitfield.BitField{}, err
+	}
 
-		tocheck = append(tocheck, s)
-		sectors[s] = struct{}{}
-		return nil
-	})
+	sectors := make(map[abi.SectorNumber]struct{})
+	var tocheck []storage.SectorRef
+	for _, info := range sectorInfos {
+		sectors[info.SectorNumber] = struct{}{}
+		tocheck = append(tocheck, storage.SectorRef{
+			ProofType: info.SealProof,
+			ID: abi.SectorID{
+				Miner:  abi.ActorID(mid),
+				Number: info.SectorNumber,
+			},
+		})
+
+	}
 	if err != nil {
 		return bitfield.BitField{}, xerrors.Errorf("iterating over bitfield: %w", err)
 	}
@@ -215,20 +222,20 @@ func (s *WindowPoStScheduler) checkSectors(ctx context.Context, check bitfield.B
 		return bitfield.BitField{}, xerrors.Errorf("checking provable sectors: %w", err)
 	}
 	for _, id := range bad {
-		delete(sectors, id)
+		delete(sectors, id.Number)
 	}
 
 	log.Warnw("Checked sectors", "checked", len(tocheck), "good", len(sectors))
 
 	sbf := bitfield.New()
 	for s := range sectors {
-		sbf.Set(uint64(s.Number))
+		sbf.Set(uint64(s))
 	}
 
 	return sbf, nil
 }
 
-func (s *WindowPoStScheduler) checkNextRecoveries(ctx context.Context, dlIdx uint64, partitions []api.Partition) ([]miner.RecoveryDeclaration, *types.SignedMessage, error) {
+func (s *WindowPoStScheduler) checkNextRecoveries(ctx context.Context, dlIdx uint64, partitions []api.Partition, tsk types.TipSetKey) ([]miner.RecoveryDeclaration, *types.SignedMessage, error) {
 	ctx, span := trace.StartSpan(ctx, "storage.checkNextRecoveries")
 	defer span.End()
 
@@ -254,7 +261,7 @@ func (s *WindowPoStScheduler) checkNextRecoveries(ctx context.Context, dlIdx uin
 
 		faulty += uc
 
-		recovered, err := s.checkSectors(ctx, unrecovered)
+		recovered, err := s.checkSectors(ctx, unrecovered, tsk)
 		if err != nil {
 			return nil, nil, xerrors.Errorf("checking unrecovered sectors: %w", err)
 		}
@@ -320,7 +327,7 @@ func (s *WindowPoStScheduler) checkNextRecoveries(ctx context.Context, dlIdx uin
 	return recoveries, sm, nil
 }
 
-func (s *WindowPoStScheduler) checkNextFaults(ctx context.Context, dlIdx uint64, partitions []api.Partition) ([]miner.FaultDeclaration, *types.SignedMessage, error) {
+func (s *WindowPoStScheduler) checkNextFaults(ctx context.Context, dlIdx uint64, partitions []api.Partition, tsk types.TipSetKey) ([]miner.FaultDeclaration, *types.SignedMessage, error) {
 	ctx, span := trace.StartSpan(ctx, "storage.checkNextFaults")
 	defer span.End()
 
@@ -335,7 +342,7 @@ func (s *WindowPoStScheduler) checkNextFaults(ctx context.Context, dlIdx uint64,
 			return nil, nil, xerrors.Errorf("determining non faulty sectors: %w", err)
 		}
 
-		good, err := s.checkSectors(ctx, nonFaulty)
+		good, err := s.checkSectors(ctx, nonFaulty, tsk)
 		if err != nil {
 			return nil, nil, xerrors.Errorf("checking sectors: %w", err)
 		}
@@ -438,7 +445,7 @@ func (s *WindowPoStScheduler) runPost(ctx context.Context, di dline.Info, ts *ty
 			}
 		)
 
-		if recoveries, sigmsg, err = s.checkNextRecoveries(context.TODO(), declDeadline, partitions); err != nil {
+		if recoveries, sigmsg, err = s.checkNextRecoveries(context.TODO(), declDeadline, partitions, ts.Key()); err != nil {
 			// TODO: This is potentially quite bad, but not even trying to post when this fails is objectively worse
 			log.Errorf("checking sector recoveries: %v", err)
 		}
@@ -457,7 +464,7 @@ func (s *WindowPoStScheduler) runPost(ctx context.Context, di dline.Info, ts *ty
 			return // FORK: declaring faults after ignition upgrade makes no sense
 		}
 
-		if faults, sigmsg, err = s.checkNextFaults(context.TODO(), declDeadline, partitions); err != nil {
+		if faults, sigmsg, err = s.checkNextFaults(context.TODO(), declDeadline, partitions, ts.Key()); err != nil {
 			// TODO: This is also potentially really bad, but we try to post anyways
 			log.Errorf("checking sector faults: %v", err)
 		}
@@ -527,7 +534,7 @@ func (s *WindowPoStScheduler) runPost(ctx context.Context, di dline.Info, ts *ty
 					return nil, xerrors.Errorf("adding recoveries to set of sectors to prove: %w", err)
 				}
 
-				good, err := s.checkSectors(ctx, toProve)
+				good, err := s.checkSectors(ctx, toProve, ts.Key())
 				if err != nil {
 					return nil, xerrors.Errorf("checking sectors to skip: %w", err)
 				}
diff --git a/storage/wdpost_run_test.go b/storage/wdpost_run_test.go
index a76483a5f..436141295 100644
--- a/storage/wdpost_run_test.go
+++ b/storage/wdpost_run_test.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-bitfield"
+	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
@@ -116,7 +117,7 @@ func (m *mockProver) GenerateWindowPoSt(ctx context.Context, aid abi.ActorID, si
 type mockFaultTracker struct {
 }
 
-func (m mockFaultTracker) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []abi.SectorID) ([]abi.SectorID, error) {
+func (m mockFaultTracker) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []storage.SectorRef) ([]abi.SectorID, error) {
 	// Returns "bad" sectors so just return nil meaning all sectors are good
 	return nil, nil
 }