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faults.go
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faults.go
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package sectorstorage
import (
"context"
"crypto/rand"
"fmt"
"os"
"path/filepath"
"golang.org/x/xerrors"
ffi "github.com/filecoin-project/filecoin-ffi"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/specs-actors/actors/runtime/proof"
"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 []storage.SectorRef, rg storiface.RGetter) (map[abi.SectorID]string, error)
}
// CheckProvable returns unprovable sectors
func (m *Manager) CheckProvable(ctx context.Context, pp abi.RegisteredPoStProof, sectors []storage.SectorRef, rg storiface.RGetter) (map[abi.SectorID]string, error) {
var bad = make(map[abi.SectorID]string)
ssize, err := pp.SectorSize()
if err != nil {
return nil, err
}
// TODO: More better checks
for _, sector := range sectors {
err := func() error {
ctx, cancel := context.WithCancel(ctx)
defer cancel()
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)
bad[sector.ID] = fmt.Sprint("can't acquire read lock")
return nil
}
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[sector.ID] = fmt.Sprintf("acquire sector failed: %s", err)
return nil
}
if lp.Sealed == "" || lp.Cache == "" {
log.Warnw("CheckProvable Sector FAULT: cache and/or sealed paths not found", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache)
bad[sector.ID] = fmt.Sprintf("cache and/or sealed paths not found, cache %q, sealed %q", lp.Cache, lp.Sealed)
return nil
}
toCheck := map[string]int64{
lp.Sealed: 1,
filepath.Join(lp.Cache, "t_aux"): 0,
filepath.Join(lp.Cache, "p_aux"): 0,
}
addCachePathsForSectorSize(toCheck, lp.Cache, ssize)
for p, sz := range toCheck {
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[sector.ID] = fmt.Sprintf("%s", err)
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[sector.ID] = fmt.Sprintf("%s is wrong size (got %d, expect %d)", p, st.Size(), int64(ssize)*sz)
return nil
}
}
}
if rg != nil {
wpp, err := sector.ProofType.RegisteredWindowPoStProof()
if err != nil {
return err
}
var pr abi.PoStRandomness = make([]byte, abi.RandomnessLength)
_, _ = rand.Read(pr)
pr[31] &= 0x3f
ch, err := ffi.GeneratePoStFallbackSectorChallenges(wpp, sector.ID.Miner, pr, []abi.SectorNumber{
sector.ID.Number,
})
if err != nil {
log.Warnw("CheckProvable Sector FAULT: generating challenges", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache, "err", err)
bad[sector.ID] = fmt.Sprintf("generating fallback challenges: %s", err)
return nil
}
commr, err := rg(ctx, sector.ID)
if err != nil {
log.Warnw("CheckProvable Sector FAULT: getting commR", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache, "err", err)
bad[sector.ID] = fmt.Sprintf("getting commR: %s", err)
return nil
}
_, err = ffi.GenerateSingleVanillaProof(ffi.PrivateSectorInfo{
SectorInfo: proof.SectorInfo{
SealProof: sector.ProofType,
SectorNumber: sector.ID.Number,
SealedCID: commr,
},
CacheDirPath: lp.Cache,
PoStProofType: wpp,
SealedSectorPath: lp.Sealed,
}, ch.Challenges[sector.ID.Number])
if err != nil {
log.Warnw("CheckProvable Sector FAULT: generating vanilla proof", "sector", sector, "sealed", lp.Sealed, "cache", lp.Cache, "err", err)
bad[sector.ID] = fmt.Sprintf("generating vanilla proof: %s", err)
return nil
}
}
return nil
}()
if err != nil {
return nil, err
}
}
return bad, nil
}
func addCachePathsForSectorSize(chk map[string]int64, cacheDir string, ssize abi.SectorSize) {
switch ssize {
case 2 << 10:
fallthrough
case 8 << 20:
fallthrough
case 512 << 20:
chk[filepath.Join(cacheDir, "sc-02-data-tree-r-last.dat")] = 0
case 32 << 30:
for i := 0; i < 8; i++ {
chk[filepath.Join(cacheDir, fmt.Sprintf("sc-02-data-tree-r-last-%d.dat", i))] = 0
}
case 64 << 30:
for i := 0; i < 16; i++ {
chk[filepath.Join(cacheDir, fmt.Sprintf("sc-02-data-tree-r-last-%d.dat", i))] = 0
}
default:
log.Warnf("not checking cache files of %s sectors for faults", ssize)
}
}
var _ FaultTracker = &Manager{}