diff --git a/api/api_storage.go b/api/api_storage.go
index 1131f45a0..e1ef8ab6b 100644
--- a/api/api_storage.go
+++ b/api/api_storage.go
@@ -54,6 +54,13 @@ type StorageMiner interface {
 	// Get the status of a given sector by ID
 	SectorsStatus(ctx context.Context, sid abi.SectorNumber, showOnChainInfo bool) (SectorInfo, error) //perm:read
 
+	// Add piece to an open sector. If no sectors with enough space are open,
+	// either a new sector will be created, or this call will block until more
+	// sectors can be created.
+	SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPieceSize, r storage.Data, d PieceDealInfo) (SectorOffset, error) //perm:admin
+
+	SectorsUnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd *cid.Cid) error //perm:admin
+
 	// List all staged sectors
 	SectorsList(context.Context) ([]abi.SectorNumber, error) //perm:read
 
@@ -124,8 +131,8 @@ type StorageMiner interface {
 	StorageBestAlloc(ctx context.Context, allocate storiface.SectorFileType, ssize abi.SectorSize, pathType storiface.PathType) ([]stores.StorageInfo, error)           //perm:admin
 	StorageLock(ctx context.Context, sector abi.SectorID, read storiface.SectorFileType, write storiface.SectorFileType) error                                          //perm:admin
 	StorageTryLock(ctx context.Context, sector abi.SectorID, read storiface.SectorFileType, write storiface.SectorFileType) (bool, error)                               //perm:admin
+	StorageList(ctx context.Context) (map[stores.ID][]stores.Decl, error)                                                                                               //perm:admin
 
-	StorageList(ctx context.Context) (map[stores.ID][]stores.Decl, error) //perm:admin
 	StorageLocal(ctx context.Context) (map[stores.ID]string, error)       //perm:admin
 	StorageStat(ctx context.Context, id stores.ID) (fsutil.FsStat, error) //perm:admin
 
@@ -289,3 +296,25 @@ type PendingDealInfo struct {
 	PublishPeriodStart time.Time
 	PublishPeriod      time.Duration
 }
+
+type SectorOffset struct {
+	Sector abi.SectorNumber
+	Offset abi.PaddedPieceSize
+}
+
+// DealInfo is a tuple of deal identity and its schedule
+type PieceDealInfo struct {
+	PublishCid   *cid.Cid
+	DealID       abi.DealID
+	DealProposal *market.DealProposal
+	DealSchedule DealSchedule
+	KeepUnsealed bool
+}
+
+// DealSchedule communicates the time interval of a storage deal. The deal must
+// appear in a sealed (proven) sector no later than StartEpoch, otherwise it
+// is invalid.
+type DealSchedule struct {
+	StartEpoch abi.ChainEpoch
+	EndEpoch   abi.ChainEpoch
+}
diff --git a/api/cbor_gen.go b/api/cbor_gen.go
index 808e516ad..4434b45ed 100644
--- a/api/cbor_gen.go
+++ b/api/cbor_gen.go
@@ -8,6 +8,7 @@ import (
 	"sort"
 
 	abi "github.com/filecoin-project/go-state-types/abi"
+	market "github.com/filecoin-project/specs-actors/actors/builtin/market"
 	paych "github.com/filecoin-project/specs-actors/actors/builtin/paych"
 	cid "github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
@@ -738,3 +739,381 @@ func (t *SealSeed) UnmarshalCBOR(r io.Reader) error {
 
 	return nil
 }
+func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{165}); err != nil {
+		return err
+	}
+
+	scratch := make([]byte, 9)
+
+	// t.PublishCid (cid.Cid) (struct)
+	if len("PublishCid") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"PublishCid\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("PublishCid"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("PublishCid")); err != nil {
+		return err
+	}
+
+	if t.PublishCid == nil {
+		if _, err := w.Write(cbg.CborNull); err != nil {
+			return err
+		}
+	} else {
+		if err := cbg.WriteCidBuf(scratch, w, *t.PublishCid); err != nil {
+			return xerrors.Errorf("failed to write cid field t.PublishCid: %w", err)
+		}
+	}
+
+	// t.DealID (abi.DealID) (uint64)
+	if len("DealID") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"DealID\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealID"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("DealID")); err != nil {
+		return err
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.DealID)); err != nil {
+		return err
+	}
+
+	// t.DealProposal (market.DealProposal) (struct)
+	if len("DealProposal") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"DealProposal\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealProposal"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("DealProposal")); err != nil {
+		return err
+	}
+
+	if err := t.DealProposal.MarshalCBOR(w); err != nil {
+		return err
+	}
+
+	// t.DealSchedule (api.DealSchedule) (struct)
+	if len("DealSchedule") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"DealSchedule\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealSchedule"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("DealSchedule")); err != nil {
+		return err
+	}
+
+	if err := t.DealSchedule.MarshalCBOR(w); err != nil {
+		return err
+	}
+
+	// t.KeepUnsealed (bool) (bool)
+	if len("KeepUnsealed") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"KeepUnsealed\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("KeepUnsealed"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("KeepUnsealed")); err != nil {
+		return err
+	}
+
+	if err := cbg.WriteBool(w, t.KeepUnsealed); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (t *PieceDealInfo) UnmarshalCBOR(r io.Reader) error {
+	*t = PieceDealInfo{}
+
+	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)
+
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajMap {
+		return fmt.Errorf("cbor input should be of type map")
+	}
+
+	if extra > cbg.MaxLength {
+		return fmt.Errorf("PieceDealInfo: map struct too large (%d)", extra)
+	}
+
+	var name string
+	n := extra
+
+	for i := uint64(0); i < n; i++ {
+
+		{
+			sval, err := cbg.ReadStringBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			name = string(sval)
+		}
+
+		switch name {
+		// t.PublishCid (cid.Cid) (struct)
+		case "PublishCid":
+
+			{
+
+				b, err := br.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := br.UnreadByte(); err != nil {
+						return err
+					}
+
+					c, err := cbg.ReadCid(br)
+					if err != nil {
+						return xerrors.Errorf("failed to read cid field t.PublishCid: %w", err)
+					}
+
+					t.PublishCid = &c
+				}
+
+			}
+			// t.DealID (abi.DealID) (uint64)
+		case "DealID":
+
+			{
+
+				maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+				if err != nil {
+					return err
+				}
+				if maj != cbg.MajUnsignedInt {
+					return fmt.Errorf("wrong type for uint64 field")
+				}
+				t.DealID = abi.DealID(extra)
+
+			}
+			// t.DealProposal (market.DealProposal) (struct)
+		case "DealProposal":
+
+			{
+
+				b, err := br.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := br.UnreadByte(); err != nil {
+						return err
+					}
+					t.DealProposal = new(market.DealProposal)
+					if err := t.DealProposal.UnmarshalCBOR(br); err != nil {
+						return xerrors.Errorf("unmarshaling t.DealProposal pointer: %w", err)
+					}
+				}
+
+			}
+			// t.DealSchedule (api.DealSchedule) (struct)
+		case "DealSchedule":
+
+			{
+
+				if err := t.DealSchedule.UnmarshalCBOR(br); err != nil {
+					return xerrors.Errorf("unmarshaling t.DealSchedule: %w", err)
+				}
+
+			}
+			// t.KeepUnsealed (bool) (bool)
+		case "KeepUnsealed":
+
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+			if maj != cbg.MajOther {
+				return fmt.Errorf("booleans must be major type 7")
+			}
+			switch extra {
+			case 20:
+				t.KeepUnsealed = false
+			case 21:
+				t.KeepUnsealed = true
+			default:
+				return fmt.Errorf("booleans are either major type 7, value 20 or 21 (got %d)", extra)
+			}
+
+		default:
+			// Field doesn't exist on this type, so ignore it
+			cbg.ScanForLinks(r, func(cid.Cid) {})
+		}
+	}
+
+	return nil
+}
+func (t *DealSchedule) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{162}); err != nil {
+		return err
+	}
+
+	scratch := make([]byte, 9)
+
+	// t.StartEpoch (abi.ChainEpoch) (int64)
+	if len("StartEpoch") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"StartEpoch\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("StartEpoch"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("StartEpoch")); err != nil {
+		return err
+	}
+
+	if t.StartEpoch >= 0 {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.StartEpoch)); err != nil {
+			return err
+		}
+	} else {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.StartEpoch-1)); err != nil {
+			return err
+		}
+	}
+
+	// t.EndEpoch (abi.ChainEpoch) (int64)
+	if len("EndEpoch") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"EndEpoch\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("EndEpoch"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("EndEpoch")); err != nil {
+		return err
+	}
+
+	if t.EndEpoch >= 0 {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.EndEpoch)); err != nil {
+			return err
+		}
+	} else {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.EndEpoch-1)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *DealSchedule) UnmarshalCBOR(r io.Reader) error {
+	*t = DealSchedule{}
+
+	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)
+
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajMap {
+		return fmt.Errorf("cbor input should be of type map")
+	}
+
+	if extra > cbg.MaxLength {
+		return fmt.Errorf("DealSchedule: map struct too large (%d)", extra)
+	}
+
+	var name string
+	n := extra
+
+	for i := uint64(0); i < n; i++ {
+
+		{
+			sval, err := cbg.ReadStringBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			name = string(sval)
+		}
+
+		switch name {
+		// t.StartEpoch (abi.ChainEpoch) (int64)
+		case "StartEpoch":
+			{
+				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+				var extraI int64
+				if err != nil {
+					return err
+				}
+				switch maj {
+				case cbg.MajUnsignedInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 positive overflow")
+					}
+				case cbg.MajNegativeInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 negative oveflow")
+					}
+					extraI = -1 - extraI
+				default:
+					return fmt.Errorf("wrong type for int64 field: %d", maj)
+				}
+
+				t.StartEpoch = abi.ChainEpoch(extraI)
+			}
+			// t.EndEpoch (abi.ChainEpoch) (int64)
+		case "EndEpoch":
+			{
+				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+				var extraI int64
+				if err != nil {
+					return err
+				}
+				switch maj {
+				case cbg.MajUnsignedInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 positive overflow")
+					}
+				case cbg.MajNegativeInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 negative oveflow")
+					}
+					extraI = -1 - extraI
+				default:
+					return fmt.Errorf("wrong type for int64 field: %d", maj)
+				}
+
+				t.EndEpoch = abi.ChainEpoch(extraI)
+			}
+
+		default:
+			// Field doesn't exist on this type, so ignore it
+			cbg.ScanForLinks(r, func(cid.Cid) {})
+		}
+	}
+
+	return nil
+}
diff --git a/api/proxy_gen.go b/api/proxy_gen.go
index 2d4d41503..eb96851a9 100644
--- a/api/proxy_gen.go
+++ b/api/proxy_gen.go
@@ -657,6 +657,8 @@ type StorageMinerStruct struct {
 
 		SealingSchedDiag func(p0 context.Context, p1 bool) (interface{}, error) `perm:"admin"`
 
+		SectorAddPieceToAny func(p0 context.Context, p1 abi.UnpaddedPieceSize, p2 storage.Data, p3 PieceDealInfo) (SectorOffset, error) `perm:"admin"`
+
 		SectorGetExpectedSealDuration func(p0 context.Context) (time.Duration, error) `perm:"read"`
 
 		SectorGetSealDelay func(p0 context.Context) (time.Duration, error) `perm:"read"`
@@ -687,6 +689,8 @@ type StorageMinerStruct struct {
 
 		SectorsSummary func(p0 context.Context) (map[SectorState]int, error) `perm:"read"`
 
+		SectorsUnsealPiece func(p0 context.Context, p1 storage.SectorRef, p2 storiface.UnpaddedByteIndex, p3 abi.UnpaddedPieceSize, p4 abi.SealRandomness, p5 *cid.Cid) error `perm:"admin"`
+
 		SectorsUpdate func(p0 context.Context, p1 abi.SectorNumber, p2 SectorState) error `perm:"admin"`
 
 		StorageAddLocal func(p0 context.Context, p1 string) error `perm:"admin"`
@@ -3107,6 +3111,14 @@ func (s *StorageMinerStub) SealingSchedDiag(p0 context.Context, p1 bool) (interf
 	return nil, xerrors.New("method not supported")
 }
 
+func (s *StorageMinerStruct) SectorAddPieceToAny(p0 context.Context, p1 abi.UnpaddedPieceSize, p2 storage.Data, p3 PieceDealInfo) (SectorOffset, error) {
+	return s.Internal.SectorAddPieceToAny(p0, p1, p2, p3)
+}
+
+func (s *StorageMinerStub) SectorAddPieceToAny(p0 context.Context, p1 abi.UnpaddedPieceSize, p2 storage.Data, p3 PieceDealInfo) (SectorOffset, error) {
+	return *new(SectorOffset), xerrors.New("method not supported")
+}
+
 func (s *StorageMinerStruct) SectorGetExpectedSealDuration(p0 context.Context) (time.Duration, error) {
 	return s.Internal.SectorGetExpectedSealDuration(p0)
 }
@@ -3227,6 +3239,14 @@ func (s *StorageMinerStub) SectorsSummary(p0 context.Context) (map[SectorState]i
 	return *new(map[SectorState]int), xerrors.New("method not supported")
 }
 
+func (s *StorageMinerStruct) SectorsUnsealPiece(p0 context.Context, p1 storage.SectorRef, p2 storiface.UnpaddedByteIndex, p3 abi.UnpaddedPieceSize, p4 abi.SealRandomness, p5 *cid.Cid) error {
+	return s.Internal.SectorsUnsealPiece(p0, p1, p2, p3, p4, p5)
+}
+
+func (s *StorageMinerStub) SectorsUnsealPiece(p0 context.Context, p1 storage.SectorRef, p2 storiface.UnpaddedByteIndex, p3 abi.UnpaddedPieceSize, p4 abi.SealRandomness, p5 *cid.Cid) error {
+	return xerrors.New("method not supported")
+}
+
 func (s *StorageMinerStruct) SectorsUpdate(p0 context.Context, p1 abi.SectorNumber, p2 SectorState) error {
 	return s.Internal.SectorsUpdate(p0, p1, p2)
 }
diff --git a/cmd/lotus-storage-miner/init.go b/cmd/lotus-storage-miner/init.go
index a02520116..76132a7a2 100644
--- a/cmd/lotus-storage-miner/init.go
+++ b/cmd/lotus-storage-miner/init.go
@@ -120,7 +120,7 @@ var initCmd = &cli.Command{
 		},
 	},
 	Subcommands: []*cli.Command{
-		initRestoreCmd,
+		restoreCmd,
 	},
 	Action: func(cctx *cli.Context) error {
 		log.Info("Initializing lotus miner")
@@ -316,10 +316,10 @@ func migratePreSealMeta(ctx context.Context, api v1api.FullNode, metadata string
 						Size:     abi.PaddedPieceSize(meta.SectorSize),
 						PieceCID: commD,
 					},
-					DealInfo: &sealing.DealInfo{
+					DealInfo: &lapi.PieceDealInfo{
 						DealID:       dealID,
 						DealProposal: &sector.Deal,
-						DealSchedule: sealing.DealSchedule{
+						DealSchedule: lapi.DealSchedule{
 							StartEpoch: sector.Deal.StartEpoch,
 							EndEpoch:   sector.Deal.EndEpoch,
 						},
diff --git a/cmd/lotus-storage-miner/init_restore.go b/cmd/lotus-storage-miner/init_restore.go
index eec7b8413..c609fd2a4 100644
--- a/cmd/lotus-storage-miner/init_restore.go
+++ b/cmd/lotus-storage-miner/init_restore.go
@@ -30,7 +30,7 @@ import (
 	"github.com/filecoin-project/lotus/node/repo"
 )
 
-var initRestoreCmd = &cli.Command{
+var restoreCmd = &cli.Command{
 	Name:  "restore",
 	Usage: "Initialize a lotus miner repo from a backup",
 	Flags: []cli.Flag{
diff --git a/extern/sector-storage/manager.go b/extern/sector-storage/manager.go
index d3fef8533..70d55ee2e 100644
--- a/extern/sector-storage/manager.go
+++ b/extern/sector-storage/manager.go
@@ -336,6 +336,49 @@ func (m *Manager) ReadPiece(ctx context.Context, sink io.Writer, sector storage.
 	return nil
 }
 
+func (m *Manager) SectorsUnsealPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, unsealed *cid.Cid) error {
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	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)
+	}
+
+	unsealFetch := func(ctx context.Context, worker Worker) error {
+		if _, err := m.waitSimpleCall(ctx)(worker.Fetch(ctx, sector, storiface.FTSealed|storiface.FTCache, storiface.PathSealing, storiface.AcquireCopy)); err != nil {
+			return xerrors.Errorf("copy sealed/cache sector data: %w", err)
+		}
+
+		return nil
+	}
+
+	if unsealed == nil {
+		return xerrors.Errorf("cannot unseal piece (sector: %d, offset: %d size: %d) - unsealed cid is undefined", sector, offset, size)
+	}
+
+	ssize, err := sector.ProofType.SectorSize()
+	if err != nil {
+		return xerrors.Errorf("getting sector size: %w", err)
+	}
+
+	selector := newExistingSelector(m.index, sector.ID, storiface.FTSealed|storiface.FTCache, false)
+
+	err = m.sched.Schedule(ctx, sector, sealtasks.TTUnseal, selector, unsealFetch, func(ctx context.Context, w Worker) error {
+		// TODO: make restartable
+
+		// NOTE: we're unsealing the whole sector here as with SDR we can't really
+		//  unseal the sector partially. Requesting the whole sector here can
+		//  save us some work in case another piece is requested from here
+		_, err := m.waitSimpleCall(ctx)(w.UnsealPiece(ctx, sector, 0, abi.PaddedPieceSize(ssize).Unpadded(), ticket, *unsealed))
+		return err
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (m *Manager) NewSector(ctx context.Context, sector storage.SectorRef) error {
 	log.Warnf("stub NewSector")
 	return nil
diff --git a/extern/storage-sealing/cbor_gen.go b/extern/storage-sealing/cbor_gen.go
index 9e12b8649..b71c2863c 100644
--- a/extern/storage-sealing/cbor_gen.go
+++ b/extern/storage-sealing/cbor_gen.go
@@ -8,7 +8,7 @@ import (
 	"sort"
 
 	abi "github.com/filecoin-project/go-state-types/abi"
-	market "github.com/filecoin-project/specs-actors/actors/builtin/market"
+	api "github.com/filecoin-project/lotus/api"
 	miner "github.com/filecoin-project/specs-actors/actors/builtin/miner"
 	cid "github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
@@ -46,7 +46,7 @@ func (t *Piece) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 
-	// t.DealInfo (sealing.DealInfo) (struct)
+	// t.DealInfo (api.PieceDealInfo) (struct)
 	if len("DealInfo") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"DealInfo\" was too long")
 	}
@@ -107,7 +107,7 @@ func (t *Piece) UnmarshalCBOR(r io.Reader) error {
 				}
 
 			}
-			// t.DealInfo (sealing.DealInfo) (struct)
+			// t.DealInfo (api.PieceDealInfo) (struct)
 		case "DealInfo":
 
 			{
@@ -120,7 +120,7 @@ func (t *Piece) UnmarshalCBOR(r io.Reader) error {
 					if err := br.UnreadByte(); err != nil {
 						return err
 					}
-					t.DealInfo = new(DealInfo)
+					t.DealInfo = new(api.PieceDealInfo)
 					if err := t.DealInfo.UnmarshalCBOR(br); err != nil {
 						return xerrors.Errorf("unmarshaling t.DealInfo pointer: %w", err)
 					}
@@ -136,384 +136,6 @@ func (t *Piece) UnmarshalCBOR(r io.Reader) error {
 
 	return nil
 }
-func (t *DealInfo) MarshalCBOR(w io.Writer) error {
-	if t == nil {
-		_, err := w.Write(cbg.CborNull)
-		return err
-	}
-	if _, err := w.Write([]byte{165}); err != nil {
-		return err
-	}
-
-	scratch := make([]byte, 9)
-
-	// t.PublishCid (cid.Cid) (struct)
-	if len("PublishCid") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"PublishCid\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("PublishCid"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("PublishCid")); err != nil {
-		return err
-	}
-
-	if t.PublishCid == nil {
-		if _, err := w.Write(cbg.CborNull); err != nil {
-			return err
-		}
-	} else {
-		if err := cbg.WriteCidBuf(scratch, w, *t.PublishCid); err != nil {
-			return xerrors.Errorf("failed to write cid field t.PublishCid: %w", err)
-		}
-	}
-
-	// t.DealID (abi.DealID) (uint64)
-	if len("DealID") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"DealID\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealID"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("DealID")); err != nil {
-		return err
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.DealID)); err != nil {
-		return err
-	}
-
-	// t.DealProposal (market.DealProposal) (struct)
-	if len("DealProposal") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"DealProposal\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealProposal"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("DealProposal")); err != nil {
-		return err
-	}
-
-	if err := t.DealProposal.MarshalCBOR(w); err != nil {
-		return err
-	}
-
-	// t.DealSchedule (sealing.DealSchedule) (struct)
-	if len("DealSchedule") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"DealSchedule\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("DealSchedule"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("DealSchedule")); err != nil {
-		return err
-	}
-
-	if err := t.DealSchedule.MarshalCBOR(w); err != nil {
-		return err
-	}
-
-	// t.KeepUnsealed (bool) (bool)
-	if len("KeepUnsealed") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"KeepUnsealed\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("KeepUnsealed"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("KeepUnsealed")); err != nil {
-		return err
-	}
-
-	if err := cbg.WriteBool(w, t.KeepUnsealed); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (t *DealInfo) UnmarshalCBOR(r io.Reader) error {
-	*t = DealInfo{}
-
-	br := cbg.GetPeeker(r)
-	scratch := make([]byte, 8)
-
-	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
-	if err != nil {
-		return err
-	}
-	if maj != cbg.MajMap {
-		return fmt.Errorf("cbor input should be of type map")
-	}
-
-	if extra > cbg.MaxLength {
-		return fmt.Errorf("DealInfo: map struct too large (%d)", extra)
-	}
-
-	var name string
-	n := extra
-
-	for i := uint64(0); i < n; i++ {
-
-		{
-			sval, err := cbg.ReadStringBuf(br, scratch)
-			if err != nil {
-				return err
-			}
-
-			name = string(sval)
-		}
-
-		switch name {
-		// t.PublishCid (cid.Cid) (struct)
-		case "PublishCid":
-
-			{
-
-				b, err := br.ReadByte()
-				if err != nil {
-					return err
-				}
-				if b != cbg.CborNull[0] {
-					if err := br.UnreadByte(); err != nil {
-						return err
-					}
-
-					c, err := cbg.ReadCid(br)
-					if err != nil {
-						return xerrors.Errorf("failed to read cid field t.PublishCid: %w", err)
-					}
-
-					t.PublishCid = &c
-				}
-
-			}
-			// t.DealID (abi.DealID) (uint64)
-		case "DealID":
-
-			{
-
-				maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
-				if err != nil {
-					return err
-				}
-				if maj != cbg.MajUnsignedInt {
-					return fmt.Errorf("wrong type for uint64 field")
-				}
-				t.DealID = abi.DealID(extra)
-
-			}
-			// t.DealProposal (market.DealProposal) (struct)
-		case "DealProposal":
-
-			{
-
-				b, err := br.ReadByte()
-				if err != nil {
-					return err
-				}
-				if b != cbg.CborNull[0] {
-					if err := br.UnreadByte(); err != nil {
-						return err
-					}
-					t.DealProposal = new(market.DealProposal)
-					if err := t.DealProposal.UnmarshalCBOR(br); err != nil {
-						return xerrors.Errorf("unmarshaling t.DealProposal pointer: %w", err)
-					}
-				}
-
-			}
-			// t.DealSchedule (sealing.DealSchedule) (struct)
-		case "DealSchedule":
-
-			{
-
-				if err := t.DealSchedule.UnmarshalCBOR(br); err != nil {
-					return xerrors.Errorf("unmarshaling t.DealSchedule: %w", err)
-				}
-
-			}
-			// t.KeepUnsealed (bool) (bool)
-		case "KeepUnsealed":
-
-			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
-			if err != nil {
-				return err
-			}
-			if maj != cbg.MajOther {
-				return fmt.Errorf("booleans must be major type 7")
-			}
-			switch extra {
-			case 20:
-				t.KeepUnsealed = false
-			case 21:
-				t.KeepUnsealed = true
-			default:
-				return fmt.Errorf("booleans are either major type 7, value 20 or 21 (got %d)", extra)
-			}
-
-		default:
-			// Field doesn't exist on this type, so ignore it
-			cbg.ScanForLinks(r, func(cid.Cid) {})
-		}
-	}
-
-	return nil
-}
-func (t *DealSchedule) MarshalCBOR(w io.Writer) error {
-	if t == nil {
-		_, err := w.Write(cbg.CborNull)
-		return err
-	}
-	if _, err := w.Write([]byte{162}); err != nil {
-		return err
-	}
-
-	scratch := make([]byte, 9)
-
-	// t.StartEpoch (abi.ChainEpoch) (int64)
-	if len("StartEpoch") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"StartEpoch\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("StartEpoch"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("StartEpoch")); err != nil {
-		return err
-	}
-
-	if t.StartEpoch >= 0 {
-		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.StartEpoch)); err != nil {
-			return err
-		}
-	} else {
-		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.StartEpoch-1)); err != nil {
-			return err
-		}
-	}
-
-	// t.EndEpoch (abi.ChainEpoch) (int64)
-	if len("EndEpoch") > cbg.MaxLength {
-		return xerrors.Errorf("Value in field \"EndEpoch\" was too long")
-	}
-
-	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("EndEpoch"))); err != nil {
-		return err
-	}
-	if _, err := io.WriteString(w, string("EndEpoch")); err != nil {
-		return err
-	}
-
-	if t.EndEpoch >= 0 {
-		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.EndEpoch)); err != nil {
-			return err
-		}
-	} else {
-		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.EndEpoch-1)); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (t *DealSchedule) UnmarshalCBOR(r io.Reader) error {
-	*t = DealSchedule{}
-
-	br := cbg.GetPeeker(r)
-	scratch := make([]byte, 8)
-
-	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
-	if err != nil {
-		return err
-	}
-	if maj != cbg.MajMap {
-		return fmt.Errorf("cbor input should be of type map")
-	}
-
-	if extra > cbg.MaxLength {
-		return fmt.Errorf("DealSchedule: map struct too large (%d)", extra)
-	}
-
-	var name string
-	n := extra
-
-	for i := uint64(0); i < n; i++ {
-
-		{
-			sval, err := cbg.ReadStringBuf(br, scratch)
-			if err != nil {
-				return err
-			}
-
-			name = string(sval)
-		}
-
-		switch name {
-		// t.StartEpoch (abi.ChainEpoch) (int64)
-		case "StartEpoch":
-			{
-				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
-				var extraI int64
-				if err != nil {
-					return err
-				}
-				switch maj {
-				case cbg.MajUnsignedInt:
-					extraI = int64(extra)
-					if extraI < 0 {
-						return fmt.Errorf("int64 positive overflow")
-					}
-				case cbg.MajNegativeInt:
-					extraI = int64(extra)
-					if extraI < 0 {
-						return fmt.Errorf("int64 negative oveflow")
-					}
-					extraI = -1 - extraI
-				default:
-					return fmt.Errorf("wrong type for int64 field: %d", maj)
-				}
-
-				t.StartEpoch = abi.ChainEpoch(extraI)
-			}
-			// t.EndEpoch (abi.ChainEpoch) (int64)
-		case "EndEpoch":
-			{
-				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
-				var extraI int64
-				if err != nil {
-					return err
-				}
-				switch maj {
-				case cbg.MajUnsignedInt:
-					extraI = int64(extra)
-					if extraI < 0 {
-						return fmt.Errorf("int64 positive overflow")
-					}
-				case cbg.MajNegativeInt:
-					extraI = int64(extra)
-					if extraI < 0 {
-						return fmt.Errorf("int64 negative oveflow")
-					}
-					extraI = -1 - extraI
-				default:
-					return fmt.Errorf("wrong type for int64 field: %d", maj)
-				}
-
-				t.EndEpoch = abi.ChainEpoch(extraI)
-			}
-
-		default:
-			// Field doesn't exist on this type, so ignore it
-			cbg.ScanForLinks(r, func(cid.Cid) {})
-		}
-	}
-
-	return nil
-}
 func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if t == nil {
 		_, err := w.Write(cbg.CborNull)
diff --git a/extern/storage-sealing/input.go b/extern/storage-sealing/input.go
index 44d2e8275..8f80b257f 100644
--- a/extern/storage-sealing/input.go
+++ b/extern/storage-sealing/input.go
@@ -14,6 +14,7 @@ import (
 	"github.com/filecoin-project/go-statemachine"
 	"github.com/filecoin-project/specs-storage/storage"
 
+	"github.com/filecoin-project/lotus/api"
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 	"github.com/filecoin-project/lotus/extern/storage-sealing/sealiface"
@@ -224,34 +225,34 @@ func (m *Sealing) handleAddPieceFailed(ctx statemachine.Context, sector SectorIn
 	return nil
 }
 
-func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPieceSize, data storage.Data, deal DealInfo) (abi.SectorNumber, abi.PaddedPieceSize, error) {
+func (m *Sealing) SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPieceSize, data storage.Data, deal api.PieceDealInfo) (api.SectorOffset, error) {
 	log.Infof("Adding piece for deal %d (publish msg: %s)", deal.DealID, deal.PublishCid)
 	if (padreader.PaddedSize(uint64(size))) != size {
-		return 0, 0, xerrors.Errorf("cannot allocate unpadded piece")
+		return api.SectorOffset{}, xerrors.Errorf("cannot allocate unpadded piece")
 	}
 
 	sp, err := m.currentSealProof(ctx)
 	if err != nil {
-		return 0, 0, xerrors.Errorf("getting current seal proof type: %w", err)
+		return api.SectorOffset{}, xerrors.Errorf("getting current seal proof type: %w", err)
 	}
 
 	ssize, err := sp.SectorSize()
 	if err != nil {
-		return 0, 0, err
+		return api.SectorOffset{}, err
 	}
 
 	if size > abi.PaddedPieceSize(ssize).Unpadded() {
-		return 0, 0, xerrors.Errorf("piece cannot fit into a sector")
+		return api.SectorOffset{}, xerrors.Errorf("piece cannot fit into a sector")
 	}
 
 	if _, err := deal.DealProposal.Cid(); err != nil {
-		return 0, 0, xerrors.Errorf("getting proposal CID: %w", err)
+		return api.SectorOffset{}, xerrors.Errorf("getting proposal CID: %w", err)
 	}
 
 	m.inputLk.Lock()
 	if _, exist := m.pendingPieces[proposalCID(deal)]; exist {
 		m.inputLk.Unlock()
-		return 0, 0, xerrors.Errorf("piece for deal %s already pending", proposalCID(deal))
+		return api.SectorOffset{}, xerrors.Errorf("piece for deal %s already pending", proposalCID(deal))
 	}
 
 	resCh := make(chan struct {
@@ -283,7 +284,7 @@ func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPiec
 
 	res := <-resCh
 
-	return res.sn, res.offset.Padded(), res.err
+	return api.SectorOffset{Sector: res.sn, Offset: res.offset.Padded()}, res.err
 }
 
 // called with m.inputLk
@@ -425,7 +426,7 @@ func (m *Sealing) StartPacking(sid abi.SectorNumber) error {
 	return m.sectors.Send(uint64(sid), SectorStartPacking{})
 }
 
-func proposalCID(deal DealInfo) cid.Cid {
+func proposalCID(deal api.PieceDealInfo) cid.Cid {
 	pc, err := deal.DealProposal.Cid()
 	if err != nil {
 		log.Errorf("DealProposal.Cid error: %+v", err)
diff --git a/extern/storage-sealing/sealing.go b/extern/storage-sealing/sealing.go
index 8feca3b7b..8556a4902 100644
--- a/extern/storage-sealing/sealing.go
+++ b/extern/storage-sealing/sealing.go
@@ -122,7 +122,7 @@ type openSector struct {
 
 type pendingPiece struct {
 	size abi.UnpaddedPieceSize
-	deal DealInfo
+	deal api.PieceDealInfo
 
 	data storage.Data
 
diff --git a/extern/storage-sealing/types.go b/extern/storage-sealing/types.go
index 58c35cf36..c5aed505a 100644
--- a/extern/storage-sealing/types.go
+++ b/extern/storage-sealing/types.go
@@ -11,39 +11,22 @@ import (
 	"github.com/filecoin-project/go-state-types/exitcode"
 	"github.com/filecoin-project/specs-storage/storage"
 
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
 	"github.com/filecoin-project/lotus/extern/storage-sealing/sealiface"
-	"github.com/filecoin-project/specs-actors/v2/actors/builtin/market"
 )
 
 // Piece is a tuple of piece and deal info
 type PieceWithDealInfo struct {
 	Piece    abi.PieceInfo
-	DealInfo DealInfo
+	DealInfo api.PieceDealInfo
 }
 
 // Piece is a tuple of piece info and optional deal
 type Piece struct {
 	Piece    abi.PieceInfo
-	DealInfo *DealInfo // nil for pieces which do not appear in deals (e.g. filler pieces)
-}
-
-// DealInfo is a tuple of deal identity and its schedule
-type DealInfo struct {
-	PublishCid   *cid.Cid
-	DealID       abi.DealID
-	DealProposal *market.DealProposal
-	DealSchedule DealSchedule
-	KeepUnsealed bool
-}
-
-// DealSchedule communicates the time interval of a storage deal. The deal must
-// appear in a sealed (proven) sector no later than StartEpoch, otherwise it
-// is invalid.
-type DealSchedule struct {
-	StartEpoch abi.ChainEpoch
-	EndEpoch   abi.ChainEpoch
+	DealInfo *api.PieceDealInfo // nil for pieces which do not appear in deals (e.g. filler pieces)
 }
 
 type Log struct {
diff --git a/gen/main.go b/gen/main.go
index 9548344fd..0018b241d 100644
--- a/gen/main.go
+++ b/gen/main.go
@@ -53,6 +53,8 @@ func main() {
 		api.SealedRefs{},
 		api.SealTicket{},
 		api.SealSeed{},
+		api.PieceDealInfo{},
+		api.DealSchedule{},
 	)
 	if err != nil {
 		fmt.Println(err)
diff --git a/markets/storageadapter/provider.go b/markets/storageadapter/provider.go
index fbeaf3b3d..b899c0810 100644
--- a/markets/storageadapter/provider.go
+++ b/markets/storageadapter/provider.go
@@ -95,11 +95,11 @@ func (n *ProviderNodeAdapter) OnDealComplete(ctx context.Context, deal storagema
 		return nil, xerrors.Errorf("deal.PublishCid can't be nil")
 	}
 
-	sdInfo := sealing.DealInfo{
+	sdInfo := api.PieceDealInfo{
 		DealID:       deal.DealID,
 		DealProposal: &deal.Proposal,
 		PublishCid:   deal.PublishCid,
-		DealSchedule: sealing.DealSchedule{
+		DealSchedule: api.DealSchedule{
 			StartEpoch: deal.ClientDealProposal.Proposal.StartEpoch,
 			EndEpoch:   deal.ClientDealProposal.Proposal.EndEpoch,
 		},
@@ -240,19 +240,19 @@ func (n *ProviderNodeAdapter) LocatePieceForDealWithinSector(ctx context.Context
 
 	// TODO: better strategy (e.g. look for already unsealed)
 	var best api.SealedRef
-	var bestSi sealing.SectorInfo
+	var bestSi api.SectorInfo
 	for _, r := range refs {
-		si, err := n.secb.Miner.GetSectorInfo(r.SectorID)
+		si, err := n.secb.SectorBuilder.SectorsStatus(ctx, r.SectorID, false)
 		if err != nil {
 			return 0, 0, 0, xerrors.Errorf("getting sector info: %w", err)
 		}
-		if si.State == sealing.Proving {
+		if si.State == api.SectorState(sealing.Proving) {
 			best = r
 			bestSi = si
 			break
 		}
 	}
-	if bestSi.State == sealing.UndefinedSectorState {
+	if bestSi.State == api.SectorState(sealing.UndefinedSectorState) {
 		return 0, 0, 0, xerrors.New("no sealed sector found")
 	}
 	return best.SectorID, best.Offset, best.Size.Padded(), nil
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index 27ab1af5f..bf1c44fc2 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -237,6 +237,14 @@ func (sm *StorageMinerAPI) SectorsStatus(ctx context.Context, sid abi.SectorNumb
 	return sInfo, nil
 }
 
+func (sm *StorageMinerAPI) SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPieceSize, r sto.Data, d api.PieceDealInfo) (api.SectorOffset, error) {
+	return sm.Miner.SectorAddPieceToAny(ctx, size, r, d)
+}
+
+func (sm *StorageMinerAPI) SectorsUnsealPiece(ctx context.Context, sector sto.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, randomness abi.SealRandomness, commd *cid.Cid) error {
+	return sm.StorageMgr.SectorsUnsealPiece(ctx, sector, offset, size, randomness, commd)
+}
+
 // List all staged sectors
 func (sm *StorageMinerAPI) SectorsList(context.Context) ([]abi.SectorNumber, error) {
 	sectors, err := sm.Miner.ListSectors()
diff --git a/storage/sealing.go b/storage/sealing.go
index 8981c3738..fdf8f25fa 100644
--- a/storage/sealing.go
+++ b/storage/sealing.go
@@ -2,14 +2,16 @@ package storage
 
 import (
 	"context"
-	"io"
 
 	"github.com/ipfs/go-cid"
+	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/specs-storage/storage"
 
+	"github.com/filecoin-project/lotus/api"
 	sealing "github.com/filecoin-project/lotus/extern/storage-sealing"
 )
 
@@ -19,10 +21,6 @@ func (m *Miner) Address() address.Address {
 	return m.sealing.Address()
 }
 
-func (m *Miner) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPieceSize, r io.Reader, d sealing.DealInfo) (abi.SectorNumber, abi.PaddedPieceSize, error) {
-	return m.sealing.AddPieceToAnySector(ctx, size, r, d)
-}
-
 func (m *Miner) StartPackingSector(sectorNum abi.SectorNumber) error {
 	return m.sealing.StartPacking(sectorNum)
 }
@@ -66,3 +64,71 @@ func (m *Miner) MarkForUpgrade(id abi.SectorNumber) error {
 func (m *Miner) IsMarkedForUpgrade(id abi.SectorNumber) bool {
 	return m.sealing.IsMarkedForUpgrade(id)
 }
+
+func (m *Miner) SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPieceSize, r storage.Data, d api.PieceDealInfo) (api.SectorOffset, error) {
+	return m.sealing.SectorAddPieceToAny(ctx, size, r, d)
+}
+
+func (m *Miner) SectorsStatus(ctx context.Context, sid abi.SectorNumber, showOnChainInfo bool) (api.SectorInfo, error) {
+	if showOnChainInfo {
+		return api.SectorInfo{}, xerrors.Errorf("on-chain info not supported")
+	}
+
+	info, err := m.sealing.GetSectorInfo(sid)
+	if err != nil {
+		return api.SectorInfo{}, err
+	}
+
+	deals := make([]abi.DealID, len(info.Pieces))
+	for i, piece := range info.Pieces {
+		if piece.DealInfo == nil {
+			continue
+		}
+		deals[i] = piece.DealInfo.DealID
+	}
+
+	log := make([]api.SectorLog, len(info.Log))
+	for i, l := range info.Log {
+		log[i] = api.SectorLog{
+			Kind:      l.Kind,
+			Timestamp: l.Timestamp,
+			Trace:     l.Trace,
+			Message:   l.Message,
+		}
+	}
+
+	sInfo := api.SectorInfo{
+		SectorID: sid,
+		State:    api.SectorState(info.State),
+		CommD:    info.CommD,
+		CommR:    info.CommR,
+		Proof:    info.Proof,
+		Deals:    deals,
+		Ticket: api.SealTicket{
+			Value: info.TicketValue,
+			Epoch: info.TicketEpoch,
+		},
+		Seed: api.SealSeed{
+			Value: info.SeedValue,
+			Epoch: info.SeedEpoch,
+		},
+		PreCommitMsg: info.PreCommitMessage,
+		CommitMsg:    info.CommitMessage,
+		Retries:      info.InvalidProofs,
+		ToUpgrade:    m.IsMarkedForUpgrade(sid),
+
+		LastErr: info.LastErr,
+		Log:     log,
+		// on chain info
+		SealProof:          0,
+		Activation:         0,
+		Expiration:         0,
+		DealWeight:         big.Zero(),
+		VerifiedDealWeight: big.Zero(),
+		InitialPledge:      big.Zero(),
+		OnTime:             0,
+		Early:              0,
+	}
+
+	return sInfo, nil
+}
diff --git a/storage/sectorblocks/blocks.go b/storage/sectorblocks/blocks.go
index bc8456a1f..ccf2c67d2 100644
--- a/storage/sectorblocks/blocks.go
+++ b/storage/sectorblocks/blocks.go
@@ -16,11 +16,10 @@ import (
 
 	cborutil "github.com/filecoin-project/go-cbor-util"
 	"github.com/filecoin-project/go-state-types/abi"
-	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/node/modules/dtypes"
-	"github.com/filecoin-project/lotus/storage"
 )
 
 type SealSerialization uint8
@@ -48,17 +47,22 @@ func DsKeyToDealID(key datastore.Key) (uint64, error) {
 	return dealID, nil
 }
 
+type SectorBuilder interface { // todo: apify, make work remote
+	SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPieceSize, r storage.Data, d api.PieceDealInfo) (api.SectorOffset, error)
+	SectorsStatus(ctx context.Context, sid abi.SectorNumber, showOnChainInfo bool) (api.SectorInfo, error)
+}
+
 type SectorBlocks struct {
-	*storage.Miner
+	SectorBuilder
 
 	keys  datastore.Batching
 	keyLk sync.Mutex
 }
 
-func NewSectorBlocks(miner *storage.Miner, ds dtypes.MetadataDS) *SectorBlocks {
+func NewSectorBlocks(sb SectorBuilder, ds dtypes.MetadataDS) *SectorBlocks {
 	sbc := &SectorBlocks{
-		Miner: miner,
-		keys:  namespace.Wrap(ds, dsPrefix),
+		SectorBuilder: sb,
+		keys:          namespace.Wrap(ds, dsPrefix),
 	}
 
 	return sbc
@@ -96,19 +100,19 @@ func (st *SectorBlocks) writeRef(dealID abi.DealID, sectorID abi.SectorNumber, o
 	return st.keys.Put(DealIDToDsKey(dealID), newRef) // TODO: batch somehow
 }
 
-func (st *SectorBlocks) AddPiece(ctx context.Context, size abi.UnpaddedPieceSize, r io.Reader, d sealing.DealInfo) (abi.SectorNumber, abi.PaddedPieceSize, error) {
-	sn, offset, err := st.Miner.AddPieceToAnySector(ctx, size, r, d)
+func (st *SectorBlocks) AddPiece(ctx context.Context, size abi.UnpaddedPieceSize, r io.Reader, d api.PieceDealInfo) (abi.SectorNumber, abi.PaddedPieceSize, error) {
+	so, err := st.SectorBuilder.SectorAddPieceToAny(ctx, size, r, d)
 	if err != nil {
 		return 0, 0, err
 	}
 
 	// TODO: DealID has very low finality here
-	err = st.writeRef(d.DealID, sn, offset, size)
+	err = st.writeRef(d.DealID, so.Sector, so.Offset, size)
 	if err != nil {
 		return 0, 0, xerrors.Errorf("writeRef: %w", err)
 	}
 
-	return sn, offset, nil
+	return so.Sector, so.Offset, nil
 }
 
 func (st *SectorBlocks) List() (map[uint64][]api.SealedRef, error) {