storagefsm: Rewrite input handling

cmd/lotus-storage-miner/info.go

@@ -284,6 +284,7 @@ var stateList = []stateMeta{
 
 	{col: color.FgBlue, state: sealing.Empty},
 	{col: color.FgBlue, state: sealing.WaitDeals},
+	{col: color.FgBlue, state: sealing.AddPiece},
 
 	{col: color.FgRed, state: sealing.UndefinedSectorState},
 	{col: color.FgYellow, state: sealing.Packing},

extern/storage-sealing/fsm.go

@@ -37,14 +37,20 @@ var fsmPlanners = map[SectorState]func(events []statemachine.Event, state *Secto
 	// Sealing
 
 	UndefinedSectorState: planOne(
-		on(SectorStart{}, Empty),
+		on(SectorStart{}, WaitDeals),
 		on(SectorStartCC{}, Packing),
 	),
-	Empty: planOne(on(SectorAddPiece{}, WaitDeals)),
+	Empty: planOne( // deprecated
-	WaitDeals: planOne(
+		on(SectorAddPiece{}, AddPiece),
-		on(SectorAddPiece{}, WaitDeals),
 		on(SectorStartPacking{}, Packing),
 	),
+	WaitDeals: planOne(
+		on(SectorAddPiece{}, AddPiece),
+		on(SectorStartPacking{}, Packing),
+	),
+	AddPiece: planOne(
+		on(SectorPieceAdded{}, WaitDeals),
+	),
 	Packing: planOne(on(SectorPacked{}, GetTicket)),
 	GetTicket: planOne(
 		on(SectorTicket{}, PreCommit1),
@@ -238,12 +244,11 @@ func (m *Sealing) plan(events []statemachine.Event, state *SectorInfo) (func(sta
 
 	/*
 
-				*   Empty <- incoming deals
+				      UndefinedSectorState (start)
-				|   |
+				       v                     |
-				|   v
+				*<- WaitDeals <-> AddPiece   |
-			    *<- WaitDeals <- incoming deals
+				|   |   /--------------------/
-				|   |
+				|   v   v
-				|   v
 				*<- Packing <- incoming committed capacity
 				|   |
 				|   v
@@ -282,10 +287,6 @@ func (m *Sealing) plan(events []statemachine.Event, state *SectorInfo) (func(sta
 				v
 				FailedUnrecoverable
 
-				UndefinedSectorState <- ¯\_(ツ)_/¯
-					|                     ^
-					*---------------------/
-
 	*/
 
 	m.stats.updateSector(m.minerSectorID(state.SectorNumber), state.State)
@@ -295,7 +296,9 @@ func (m *Sealing) plan(events []statemachine.Event, state *SectorInfo) (func(sta
 	case Empty:
 		fallthrough
 	case WaitDeals:
-		log.Infof("Waiting for deals %d", state.SectorNumber)
+		return m.handleWaitDeals, processed, nil
+	case AddPiece:
+		return m.handleAddPiece, processed, nil
 	case Packing:
 		return m.handlePacking, processed, nil
 	case GetTicket:
@@ -418,60 +421,10 @@ func (m *Sealing) restartSectors(ctx context.Context) error {
 		log.Errorf("loading sector list: %+v", err)
 	}
 
-	cfg, err := m.getConfig()
-	if err != nil {
-		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() taken early in .New to prevent races
-	defer m.unsealedInfoMap.lk.Unlock()
-
 	for _, sector := range trackedSectors {
 		if err := m.sectors.Send(uint64(sector.SectorNumber), SectorRestart{}); err != nil {
 			log.Errorf("restarting sector %d: %+v", sector.SectorNumber, err)
 		}
-
-		if sector.State == WaitDeals {
-
-			// put the sector in the unsealedInfoMap
-			if _, ok := m.unsealedInfoMap.infos[sector.SectorNumber]; ok {
-				// 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{
-					ssize: ssize,
-				}
-				for _, p := range sector.Pieces {
-					if p.DealInfo != nil {
-						ui.numDeals++
-					}
-					ui.stored += p.Piece.Size
-					ui.pieceSizes = append(ui.pieceSizes, p.Piece.Size.Unpadded())
-				}
-
-				m.unsealedInfoMap.infos[sector.SectorNumber] = ui
-			}
-
-			// start a fresh timer for the sector
-			if cfg.WaitDealsDelay > 0 {
-				timer := time.NewTimer(cfg.WaitDealsDelay)
-				go func() {
-					<-timer.C
-					if err := m.StartPacking(sector.SectorNumber); err != nil {
-						log.Errorf("starting sector %d: %+v", sector.SectorNumber, err)
-					}
-				}()
-			}
-		}
 	}
 
 	// TODO: Grab on-chain sector set and diff with trackedSectors

extern/storage-sealing/fsm_events.go

@@ -77,11 +77,20 @@ func (evt SectorStartCC) apply(state *SectorInfo) {
 }
 
 type SectorAddPiece struct {
-	NewPiece Piece
+	NewPiece cid.Cid
 }
 
 func (evt SectorAddPiece) apply(state *SectorInfo) {
-	state.Pieces = append(state.Pieces, evt.NewPiece)
+	state.PendingPieces = append(state.PendingPieces, evt.NewPiece)
+}
+
+type SectorPieceAdded struct {
+	NewPieces []Piece
+}
+
+func (evt SectorPieceAdded) apply(state *SectorInfo) {
+	state.Pieces = append(state.Pieces, evt.NewPieces...)
+	state.PendingPieces = nil
 }
 
 type SectorStartPacking struct{}

extern/storage-sealing/input.go

@@ -0,0 +1,308 @@
+package sealing
+
+import (
+	"context"
+	"sort"
+
+	"golang.org/x/xerrors"
+
+	"github.com/ipfs/go-cid"
+
+	"github.com/filecoin-project/go-padreader"
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/go-statemachine"
+	"github.com/filecoin-project/specs-storage/storage"
+
+	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
+	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
+)
+
+func (m *Sealing) handleWaitDeals(ctx statemachine.Context, sector SectorInfo) error {
+	// if full / oldish / has oldish deals goto seal
+	// ^ also per sector deal limit
+
+	// send SectorStartPacking
+
+	m.inputLk.Lock()
+	var used abi.UnpaddedPieceSize
+	for _, piece := range sector.Pieces {
+		used += piece.Piece.Size.Unpadded()
+	}
+
+	m.openSectors[m.minerSectorID(sector.SectorNumber)] = &openSector{
+		used: used,
+		maybeAccept: func(cid cid.Cid) error {
+			// todo check space
+
+			// todo check deal expiration
+
+			return ctx.Send(SectorAddPiece{cid})
+		},
+	}
+
+	go func() {
+		defer m.inputLk.Unlock()
+		if err := m.updateInput(ctx.Context(), sector.SectorType); err != nil {
+			log.Errorf("%+v", err)
+		}
+	}()
+
+	return nil
+}
+
+func (m *Sealing) handleAddPiece(ctx statemachine.Context, sector SectorInfo) error {
+	ssize, err := sector.SectorType.SectorSize()
+	if err != nil {
+		return err
+	}
+
+	m.inputLk.Lock()
+	delete(m.openSectors, m.minerSectorID(sector.SectorNumber)) // todo: do this when handling the event
+	m.inputLk.Unlock()
+
+	res := SectorPieceAdded{}
+
+	for _, piece := range sector.PendingPieces {
+		m.inputLk.Lock()
+		deal, ok := m.pendingPieces[piece]
+		m.inputLk.Unlock()
+		if !ok {
+			// todo: this probably means that the miner process was restarted in the middle of adding pieces.
+			//  Truncate whatever was in process of being added to the sector (keep sector.Pieces as those are cleanly added, then go to WaitDeals)
+			return xerrors.Errorf("piece %s assigned to sector %d not found", piece, sector.SectorNumber)
+		}
+
+		var stored abi.PaddedPieceSize
+		for _, piece := range sector.Pieces {
+			stored += piece.Piece.Size
+		}
+
+		pads, padLength := ffiwrapper.GetRequiredPadding(stored, deal.size.Padded())
+
+		if stored+padLength+deal.size.Padded() > abi.PaddedPieceSize(ssize) {
+			return xerrors.Errorf("piece assigned to a sector with not enough space")
+		}
+
+		offset := padLength
+		pieceSizes := make([]abi.UnpaddedPieceSize, len(sector.Pieces))
+		for i, p := range sector.Pieces {
+			pieceSizes[i] = p.Piece.Size.Unpadded()
+			offset += p.Piece.Size
+		}
+
+		for _, p := range pads {
+			ppi, err := m.sealer.AddPiece(sectorstorage.WithPriority(ctx.Context(), DealSectorPriority),
+				m.minerSector(sector.SectorType, sector.SectorNumber),
+				pieceSizes,
+				p.Unpadded(),
+				NewNullReader(p.Unpadded()))
+			if err != nil {
+				return xerrors.Errorf("writing padding piece: %w", err) // todo failed state
+			}
+
+			pieceSizes = append(pieceSizes, p.Unpadded())
+			res.NewPieces = append(res.NewPieces, Piece{
+				Piece: ppi,
+			})
+		}
+
+		ppi, err := m.sealer.AddPiece(sectorstorage.WithPriority(ctx.Context(), DealSectorPriority),
+			m.minerSector(sector.SectorType, sector.SectorNumber),
+			pieceSizes,
+			deal.size,
+			deal.data)
+		if err != nil {
+			return xerrors.Errorf("writing padding piece: %w", err) // todo failed state
+		}
+
+		pieceSizes = append(pieceSizes, deal.size)
+		res.NewPieces = append(res.NewPieces, Piece{
+			Piece: ppi,
+			DealInfo: &deal.deal,
+		})
+	}
+
+	return ctx.Send(res)
+}
+
+func (m *Sealing) AddPieceToAnySector(ctx context.Context, size abi.UnpaddedPieceSize, data storage.Data, deal DealInfo) (abi.SectorNumber, abi.PaddedPieceSize, 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")
+	}
+
+	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")
+	}
+
+	if deal.PublishCid == nil {
+		return 0, 0, xerrors.Errorf("piece must have a PublishCID")
+	}
+
+	m.inputLk.Lock()
+	if _, exist := m.pendingPieces[*deal.PublishCid]; exist {
+		m.inputLk.Unlock()
+		return 0, 0, xerrors.Errorf("piece for deal %s already pending", *deal.PublishCid)
+	}
+
+	resCh := make(chan struct{sn abi.SectorNumber; offset abi.UnpaddedPieceSize; err error}, 1)
+
+	m.pendingPieces[*deal.PublishCid] = &pendingPiece{
+		size:     size,
+		deal:     deal,
+		data:     data,
+		assigned: false,
+		accepted: func(sn abi.SectorNumber, offset abi.UnpaddedPieceSize, err error) {
+			resCh <- struct {
+				sn   abi.SectorNumber
+				offset abi.UnpaddedPieceSize
+				err  error
+			}{sn: sn, offset: offset, err: err}
+		},
+	}
+
+	go func() {
+		defer m.inputLk.Unlock()
+		if err := m.updateInput(ctx, sp); err != nil {
+			log.Errorf("%+v", err)
+		}
+	}()
+
+	res := <-resCh
+
+	return res.sn, res.offset.Padded(), res.err
+}
+
+// called with m.inputLk
+func (m *Sealing) updateInput(ctx context.Context, sp abi.RegisteredSealProof) error {
+	ssize, err := sp.SectorSize()
+	if err != nil {
+		return err
+	}
+
+	type match struct {
+		sector abi.SectorID
+		deal   cid.Cid
+
+		size    abi.UnpaddedPieceSize
+		padding abi.UnpaddedPieceSize
+	}
+
+	var matches []match
+	toAssign := map[cid.Cid]struct{}{} // used to maybe create new sectors
+
+	// todo: this is distinctly O(n^2), may need to be optimized for tiny deals and large scale miners
+	//  (unlikely to be a problem now)
+	for id, sector := range m.openSectors {
+		avail := abi.PaddedPieceSize(ssize).Unpadded() - sector.used
+
+		for pieceCid, piece := range m.pendingPieces {
+			if piece.assigned {
+				continue // already assigned to a sector, skip
+			}
+
+			toAssign[pieceCid] = struct{}{}
+
+			if piece.size <= avail { // (note: if we have enough space for the piece, we also have enough space for inter-piece padding)
+				matches = append(matches, match{
+					sector: id,
+					deal:   pieceCid,
+
+					size:    piece.size,
+					padding: avail % piece.size,
+				})
+			}
+
+		}
+	}
+
+	sort.Slice(matches, func(i, j int) bool {
+		if matches[i].padding != matches[j].padding { // less padding is better
+			return matches[i].padding < matches[j].padding
+		}
+
+		if matches[i].size != matches[j].size { // larger pieces are better
+			return matches[i].size < matches[j].size
+		}
+
+		return matches[i].sector.Number < matches[j].sector.Number // prefer older sectors
+	})
+
+	var assigned int
+	for _, mt := range matches {
+		if m.pendingPieces[mt.deal].assigned {
+			assigned++
+			continue
+		}
+
+		if _, found := m.openSectors[mt.sector]; !found {
+			continue
+		}
+
+		err := m.openSectors[mt.sector].maybeAccept(mt.deal)
+		if err != nil {
+			m.pendingPieces[mt.deal].accepted(mt.sector.Number, 0, err) // non-error case in handleAddPiece
+		}
+
+		m.pendingPieces[mt.deal].assigned = true
+		delete(toAssign, mt.deal)
+
+		if err != nil {
+			log.Errorf("sector %d rejected deal %s: %+v", mt.sector, mt.deal, err)
+			continue
+		}
+
+		delete(m.openSectors, mt.sector)
+	}
+
+	if len(toAssign) > 0 {
+		m.tryCreateDealSector(ctx, sp)
+
+	}
+
+	return nil
+}
+
+func (m *Sealing) tryCreateDealSector(ctx context.Context, sp abi.RegisteredSealProof) error {
+	cfg, err := m.getConfig()
+	if err != nil {
+		return xerrors.Errorf("getting storage config: %w", err)
+	}
+
+	if cfg.MaxSealingSectorsForDeals > 0 {
+		if m.stats.curSealing() > cfg.MaxSealingSectorsForDeals {
+			return nil
+		}
+		if m.stats.curStaging() > cfg.MaxWaitDealsSectors {
+			return nil
+		}
+	}
+
+	// Now actually create a new sector
+
+	sid, err := m.sc.Next()
+	if err != nil {
+		return xerrors.Errorf("getting sector number: %w", err)
+	}
+
+	err = m.sealer.NewSector(ctx, m.minerSector(sp, sid))
+	if err != nil {
+		return xerrors.Errorf("initializing sector: %w", err)
+	}
+
+	log.Infow("Creating sector", "number", sid, "type", "deal", "proofType", sp)
+	return m.sectors.Send(uint64(sid), SectorStart{
+		ID:         sid,
+		SectorType: sp,
+	})
+}

extern/storage-sealing/sealiface/config.go

@@ -15,4 +15,6 @@ type Config struct {
 	MaxSealingSectorsForDeals uint64
 
 	WaitDealsDelay time.Duration
+
+	TargetWaitDealsSectors uint64
 }

extern/storage-sealing/sealing.go

@@ -3,10 +3,7 @@ package sealing
 import (
 	"context"
 	"errors"
-	"io"
-	"math"
 	"sync"
-	"time"
 
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-datastore"
@@ -15,7 +12,6 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-address"
-	padreader "github.com/filecoin-project/go-padreader"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/go-state-types/crypto"
@@ -85,9 +81,11 @@ type Sealing struct {
 	sectors *statemachine.StateGroup
 	sc      SectorIDCounter
 	verif   ffiwrapper.Verifier
+	pcp     PreCommitPolicy
 
-	pcp             PreCommitPolicy
+	inputLk       sync.Mutex
-	unsealedInfoMap UnsealedSectorMap
+	openSectors   map[abi.SectorID]*openSector
+	pendingPieces map[cid.Cid]*pendingPiece
 
 	upgradeLk sync.Mutex
 	toUpgrade map[abi.SectorNumber]struct{}
@@ -108,17 +106,20 @@ type FeeConfig struct {
 	MaxTerminateGasFee abi.TokenAmount
 }
 
-type UnsealedSectorMap struct {
+type openSector struct {
-	infos map[abi.SectorNumber]UnsealedSectorInfo
+	used abi.UnpaddedPieceSize // change to bitfield/rle when AddPiece gains offset support to better fill sectors
-	lk    sync.Mutex
+
+	maybeAccept func(cid.Cid) error
 }
 
-type UnsealedSectorInfo struct {
+type pendingPiece struct {
-	numDeals uint64
+	size abi.UnpaddedPieceSize
-	// stored should always equal sum of pieceSizes.Padded()
+	deal DealInfo
-	stored     abi.PaddedPieceSize
+
-	pieceSizes []abi.UnpaddedPieceSize
+	data storage.Data
-	ssize      abi.SectorSize
+
+	assigned bool // assigned to a sector?
+	accepted func(abi.SectorNumber, abi.UnpaddedPieceSize, error)
 }
 
 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, as AddrSel) *Sealing {
@@ -132,12 +133,10 @@ func New(api SealingAPI, fc FeeConfig, events Events, maddr address.Address, ds
 		sc:     sc,
 		verif:  verif,
 		pcp:    pcp,
-		unsealedInfoMap: UnsealedSectorMap{
-			infos: make(map[abi.SectorNumber]UnsealedSectorInfo),
-			lk:    sync.Mutex{},
-		},
 
-		toUpgrade: map[abi.SectorNumber]struct{}{},
+		openSectors:   map[abi.SectorID]*openSector{},
+		pendingPieces: map[cid.Cid]*pendingPiece{},
+		toUpgrade:     map[abi.SectorNumber]struct{}{},
 
 		notifee: notifee,
 		addrSel: as,
@@ -153,8 +152,6 @@ func New(api SealingAPI, fc FeeConfig, events Events, maddr address.Address, ds
 
 	s.sectors = statemachine.New(namespace.Wrap(ds, datastore.NewKey(SectorStorePrefix)), s, SectorInfo{})
 
-	s.unsealedInfoMap.lk.Lock() // released after initialized in .Run()
-
 	return s
 }
 
@@ -178,104 +175,6 @@ func (m *Sealing) Stop(ctx context.Context) error {
 	return nil
 }
 
-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")
-	}
-
-	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(ctx, size)
-	if err != nil {
-		m.unsealedInfoMap.lk.Unlock()
-		return 0, 0, xerrors.Errorf("getting available sector: %w", err)
-	}
-
-	for _, p := range pads {
-		err = m.addPiece(ctx, sid, p.Unpadded(), NewNullReader(p.Unpadded()), nil)
-		if err != nil {
-			m.unsealedInfoMap.lk.Unlock()
-			return 0, 0, xerrors.Errorf("writing pads: %w", err)
-		}
-	}
-
-	offset := m.unsealedInfoMap.infos[sid].stored
-	err = m.addPiece(ctx, sid, size, r, &d)
-
-	if err != nil {
-		m.unsealedInfoMap.lk.Unlock()
-		return 0, 0, xerrors.Errorf("adding piece to sector: %w", err)
-	}
-
-	startPacking := m.unsealedInfoMap.infos[sid].numDeals >= getDealPerSectorLimit(ssize)
-
-	m.unsealedInfoMap.lk.Unlock()
-
-	if startPacking {
-		if err := m.StartPacking(sid); err != nil {
-			return 0, 0, xerrors.Errorf("start packing: %w", err)
-		}
-	}
-
-	return sid, offset, nil
-}
-
-// 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)
-	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)
-	}
-	piece := Piece{
-		Piece:    ppi,
-		DealInfo: di,
-	}
-
-	err = m.sectors.Send(uint64(sectorID), SectorAddPiece{NewPiece: piece})
-	if err != nil {
-		return err
-	}
-
-	ui := m.unsealedInfoMap.infos[sectorID]
-	num := m.unsealedInfoMap.infos[sectorID].numDeals
-	if di != nil {
-		num = num + 1
-	}
-	m.unsealedInfoMap.infos[sectorID] = UnsealedSectorInfo{
-		numDeals:   num,
-		stored:     ui.stored + piece.Piece.Size,
-		pieceSizes: append(ui.pieceSizes, piece.Piece.Size.Unpadded()),
-		ssize:      ssize,
-	}
-
-	return nil
-}
-
 func (m *Sealing) Remove(ctx context.Context, sid abi.SectorNumber) error {
 	return m.sectors.Send(uint64(sid), SectorRemove{})
 }
@@ -292,168 +191,6 @@ func (m *Sealing) TerminatePending(ctx context.Context) ([]abi.SectorID, error)
 	return m.terminator.Pending(ctx)
 }
 
-// Caller should NOT hold m.unsealedInfoMap.lk
-func (m *Sealing) StartPacking(sectorID abi.SectorNumber) error {
-	// locking here ensures that when the SectorStartPacking event is sent, the sector won't be picked up anywhere else
-	m.unsealedInfoMap.lk.Lock()
-	defer m.unsealedInfoMap.lk.Unlock()
-
-	// cannot send SectorStartPacking to sectors that have already been packed, otherwise it will cause the state machine to exit
-	if _, ok := m.unsealedInfoMap.infos[sectorID]; !ok {
-		log.Warnf("call start packing, but sector %v not in unsealedInfoMap.infos, maybe have called", sectorID)
-		return nil
-	}
-	log.Infof("Starting packing sector %d", sectorID)
-	err := m.sectors.Send(uint64(sectorID), SectorStartPacking{})
-	if err != nil {
-		return err
-	}
-	log.Infof("send Starting packing event success sector %d", sectorID)
-
-	delete(m.unsealedInfoMap.infos, sectorID)
-
-	return nil
-}
-
-// Caller should hold m.unsealedInfoMap.lk
-func (m *Sealing) getSectorAndPadding(ctx context.Context, size abi.UnpaddedPieceSize) (abi.SectorNumber, []abi.PaddedPieceSize, error) {
-	for tries := 0; tries < 100; tries++ {
-		for k, v := range m.unsealedInfoMap.infos {
-			pads, padLength := ffiwrapper.GetRequiredPadding(v.stored, size.Padded())
-
-			if v.stored+size.Padded()+padLength <= abi.PaddedPieceSize(v.ssize) {
-				return k, pads, nil
-			}
-		}
-
-		if len(m.unsealedInfoMap.infos) > 0 {
-			log.Infow("tried to put a piece into an open sector, found none with enough space", "open", len(m.unsealedInfoMap.infos), "size", size, "tries", tries)
-		}
-
-		ns, ssize, err := m.newDealSector(ctx)
-		switch err {
-		case nil:
-			m.unsealedInfoMap.infos[ns] = UnsealedSectorInfo{
-				numDeals:   0,
-				stored:     0,
-				pieceSizes: nil,
-				ssize:      ssize,
-			}
-		case errTooManySealing:
-			m.unsealedInfoMap.lk.Unlock()
-
-			select {
-			case <-time.After(2 * time.Second):
-			case <-ctx.Done():
-				m.unsealedInfoMap.lk.Lock()
-				return 0, nil, xerrors.Errorf("getting sector for piece: %w", ctx.Err())
-			}
-
-			m.unsealedInfoMap.lk.Lock()
-			continue
-		default:
-			return 0, nil, xerrors.Errorf("creating new sector: %w", err)
-		}
-
-		return ns, nil, nil
-	}
-
-	return 0, nil, xerrors.Errorf("failed to allocate piece to a sector")
-}
-
-var errTooManySealing = errors.New("too many sectors sealing")
-
-// newDealSector creates a new sector for deal storage
-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, 0, xerrors.Errorf("getting config: %w", err)
-	}
-
-	if cfg.MaxSealingSectorsForDeals > 0 {
-		if m.stats.curSealing() > cfg.MaxSealingSectorsForDeals {
-			return 0, 0, ErrTooManySectorsSealing
-		}
-	}
-
-	if cfg.MaxWaitDealsSectors > 0 && uint64(len(m.unsealedInfoMap.infos)) >= cfg.MaxWaitDealsSectors {
-		// Too many sectors are sealing in parallel. Start sealing one, and retry
-		// allocating the piece to a sector (we're dropping the lock here, so in
-		// case other goroutines are also trying to create a sector, we retry in
-		// getSectorAndPadding instead of here - otherwise if we have lots of
-		// parallel deals in progress, we can start creating a ton of sectors
-		// with just a single deal in them)
-		var mostStored abi.PaddedPieceSize = math.MaxUint64
-		var best abi.SectorNumber = math.MaxUint64
-
-		for sn, info := range m.unsealedInfoMap.infos {
-			if info.stored+1 > mostStored+1 { // 18446744073709551615 + 1 = 0
-				best = sn
-			}
-		}
-
-		if best != math.MaxUint64 {
-			m.unsealedInfoMap.lk.Unlock()
-			err := m.StartPacking(best)
-			m.unsealedInfoMap.lk.Lock()
-
-			if err != nil {
-				log.Errorf("newDealSector StartPacking error: %+v", err)
-				// let's pretend this is fine
-			}
-		}
-
-		return 0, 0, errTooManySealing // will wait a bit and retry
-	}
-
-	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, 0, xerrors.Errorf("getting sector number: %w", err)
-	}
-
-	err = m.sealer.NewSector(context.TODO(), m.minerSector(spt, sid))
-	if err != nil {
-		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: spt,
-	})
-
-	if err != nil {
-		return 0, 0, xerrors.Errorf("starting the sector fsm: %w", err)
-	}
-
-	cf, err := m.getConfig()
-	if err != nil {
-		return 0, 0, xerrors.Errorf("getting the sealing delay: %w", err)
-	}
-
-	if cf.WaitDealsDelay > 0 {
-		timer := time.NewTimer(cf.WaitDealsDelay)
-		go func() {
-			<-timer.C
-			if err := m.StartPacking(sid); err != nil {
-				log.Errorf("starting sector %d: %+v", sid, err)
-			}
-		}()
-	}
-
-	ssize, err := spt.SectorSize()
-	return sid, ssize, err
-}
-
 // newSectorCC accepts a slice of pieces with no deal (junk data)
 func (m *Sealing) newSectorCC(ctx context.Context, sid abi.SectorNumber, pieces []Piece) error {
 	spt, err := m.currentSealProof(ctx)

extern/storage-sealing/sector_state.go

@@ -6,6 +6,7 @@ var ExistSectorStateList = map[SectorState]struct{}{
 	Empty:                {},
 	WaitDeals:            {},
 	Packing:              {},
+	AddPiece:             {},
 	GetTicket:            {},
 	PreCommit1:           {},
 	PreCommit2:           {},
@@ -43,8 +44,9 @@ const (
 	UndefinedSectorState SectorState = ""
 
 	// happy path
-	Empty          SectorState = "Empty"
+	Empty          SectorState = "Empty"         // deprecated
 	WaitDeals      SectorState = "WaitDeals"     // waiting for more pieces (deals) to be added to the sector
+	AddPiece       SectorState = "AddPiece"      // put deal data (and padding if required) into the sector
 	Packing        SectorState = "Packing"       // sector not in sealStore, and not on chain
 	GetTicket      SectorState = "GetTicket"     // generate ticket
 	PreCommit1     SectorState = "PreCommit1"    // do PreCommit1
@@ -85,7 +87,9 @@ const (
 
 func toStatState(st SectorState) statSectorState {
 	switch st {
-	case Empty, WaitDeals, Packing, GetTicket, PreCommit1, PreCommit2, PreCommitting, PreCommitWait, WaitSeed, Committing, SubmitCommit, CommitWait, FinalizeSector:
+	case Empty, WaitDeals, AddPiece:
+		return sstStaging
+	case Packing, GetTicket, PreCommit1, PreCommit2, PreCommitting, PreCommitWait, WaitSeed, Committing, SubmitCommit, CommitWait, FinalizeSector:
 		return sstSealing
 	case Proving, Removed, Removing, Terminating, TerminateWait, TerminateFinality, TerminateFailed:
 		return sstProving

extern/storage-sealing/stats.go

@@ -9,7 +9,8 @@ import (
 type statSectorState int
 
 const (
-	sstSealing statSectorState = iota
+	sstStaging statSectorState = iota
+	sstSealing
 	sstFailed
 	sstProving
 	nsst
@@ -41,5 +42,13 @@ func (ss *SectorStats) curSealing() uint64 {
 	ss.lk.Lock()
 	defer ss.lk.Unlock()
 
-	return ss.totals[sstSealing] + ss.totals[sstFailed]
+	return ss.totals[sstStaging] + ss.totals[sstSealing] + ss.totals[sstFailed]
+}
+
+// return the number of sectors waiting to enter the sealing pipeline
+func (ss *SectorStats) curStaging() uint64 {
+	ss.lk.Lock()
+	defer ss.lk.Unlock()
+
+	return ss.totals[sstStaging]
 }

extern/storage-sealing/types.go

@@ -70,7 +70,8 @@ type SectorInfo struct {
 	SectorType abi.RegisteredSealProof
 
 	// Packing
-	Pieces []Piece
+	Pieces        []Piece
+	PendingPieces []cid.Cid
 
 	// PreCommit1
 	TicketValue   abi.SealRandomness

node/config/def.go

@@ -64,6 +64,14 @@ type SealingConfig struct {
 	MaxSealingSectorsForDeals uint64
 
 	WaitDealsDelay Duration
+
+	// Keep this many sectors in sealing pipeline, start CC if needed
+	// todo TargetSealingSectors uint64
+
+	// Try to keep this many sectors waiting for deals
+	TargetWaitDealsSectors uint64
+
+	// todo TargetSectors - stop auto-pleding new sectors after this many sectors are sealed, default CC upgrade for deals sectors if above
 }
 
 type MinerFeeConfig struct {
@@ -183,6 +191,7 @@ func DefaultStorageMiner() *StorageMiner {
 			MaxSealingSectors:         0,
 			MaxSealingSectorsForDeals: 0,
 			WaitDealsDelay:            Duration(time.Hour * 6),
+			TargetWaitDealsSectors:    2,
 		},
 
 		Storage: sectorstorage.SealerConfig{

node/modules/storageminer.go

@@ -805,6 +805,7 @@ func NewSetSealConfigFunc(r repo.LockedRepo) (dtypes.SetSealingConfigFunc, error
 				MaxSealingSectors:         cfg.MaxSealingSectors,
 				MaxSealingSectorsForDeals: cfg.MaxSealingSectorsForDeals,
 				WaitDealsDelay:            config.Duration(cfg.WaitDealsDelay),
+				TargetWaitDealsSectors: cfg.TargetWaitDealsSectors,
 			}
 		})
 		return
@@ -819,6 +820,7 @@ func NewGetSealConfigFunc(r repo.LockedRepo) (dtypes.GetSealingConfigFunc, error
 				MaxSealingSectors:         cfg.Sealing.MaxSealingSectors,
 				MaxSealingSectorsForDeals: cfg.Sealing.MaxSealingSectorsForDeals,
 				WaitDealsDelay:            time.Duration(cfg.Sealing.WaitDealsDelay),
+				TargetWaitDealsSectors: cfg.Sealing.TargetWaitDealsSectors,
 			}
 		})
 		return