[#387] gc: Cancel GC is change mode requested

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

internal/logs/logs.go

@@ -489,4 +489,5 @@ const (
 	EngineShardsEvacuationFailedToReadObject                                = "failed to read object to evacuate"
 	EngineShardsEvacuationFailedToMoveObject                                = "failed to evacuate object to other node"
 	ShardGCFailedToGetExpiredWithLinked                                     = "failed to get expired objects with linked"
+	ShardDeleteCantDeleteFromWriteCache                                     = "can't delete object from write cache"
 )

pkg/local_object_storage/shard/control.go

@@ -304,8 +304,8 @@ func (s *Shard) Reload(ctx context.Context, opts ...Option) error {
 		opts[i](&c)
 	}
 
-	s.m.Lock()
+	unlock := s.lockExclusive()
-	defer s.m.Unlock()
+	defer unlock()
 
 	ok, err := s.metaBase.Reload(c.metaOpts...)
 	if err != nil {
@@ -335,3 +335,15 @@ func (s *Shard) Reload(ctx context.Context, opts ...Option) error {
 	s.log.Info(logs.ShardTryingToRestoreReadwriteMode)
 	return s.setMode(mode.ReadWrite)
 }
+
+func (s *Shard) lockExclusive() func() {
+	s.setModeRequested.Store(true)
+	val := s.gcCancel.Load()
+	if val != nil {
+		cancelGC := val.(context.CancelFunc)
+		cancelGC()
+	}
+	s.m.Lock()
+	s.setModeRequested.Store(false)
+	return s.m.Unlock
+}

pkg/local_object_storage/shard/delete.go

@@ -53,70 +53,74 @@ func (s *Shard) delete(ctx context.Context, prm DeletePrm) (DeleteRes, error) {
 		return DeleteRes{}, ErrDegradedMode
 	}
 
-	ln := len(prm.addr)
+	for _, addr := range prm.addr {
-
+		select {
-	smalls := make(map[oid.Address][]byte, ln)
+		case <-ctx.Done():
-
+			return DeleteRes{}, ctx.Err()
-	for i := range prm.addr {
+		default:
-		if s.hasWriteCache() {
-			err := s.writeCache.Delete(ctx, prm.addr[i])
-			if err != nil && !IsErrNotFound(err) && !errors.Is(err, writecache.ErrReadOnly) {
-				s.log.Warn(logs.ShardCantDeleteObjectFromWriteCache, zap.String("error", err.Error()))
-			}
 		}
 
-		var sPrm meta.StorageIDPrm
+		s.deleteObjectFromWriteCacheSafe(ctx, addr)
-		sPrm.SetAddress(prm.addr[i])
 
-		res, err := s.metaBase.StorageID(ctx, sPrm)
+		s.deleteFromBlobstorSafe(ctx, addr)
-		if err != nil {
-			s.log.Debug(logs.ShardCantGetStorageIDFromMetabase,
-				zap.Stringer("object", prm.addr[i]),
-				zap.String("error", err.Error()))
 
-			continue
+		if err := s.deleteFromMetabase(ctx, addr); err != nil {
-		}
+			return DeleteRes{}, err // stop on metabase error ?
-
-		if res.StorageID() != nil {
-			smalls[prm.addr[i]] = res.StorageID()
-		}
-	}
-
-	var delPrm meta.DeletePrm
-	delPrm.SetAddresses(prm.addr...)
-
-	res, err := s.metaBase.Delete(ctx, delPrm)
-	if err != nil {
-		return DeleteRes{}, err // stop on metabase error ?
-	}
-
-	var totalRemovedPayload uint64
-
-	s.decObjectCounterBy(physical, res.RawObjectsRemoved())
-	s.decObjectCounterBy(logical, res.AvailableObjectsRemoved())
-	for i := range prm.addr {
-		removedPayload := res.RemovedPhysicalObjectSizes()[i]
-		totalRemovedPayload += removedPayload
-		logicalRemovedPayload := res.RemovedLogicalObjectSizes()[i]
-		if logicalRemovedPayload > 0 {
-			s.addToContainerSize(prm.addr[i].Container().EncodeToString(), -int64(logicalRemovedPayload))
-		}
-	}
-	s.addToPayloadSize(-int64(totalRemovedPayload))
-
-	for i := range prm.addr {
-		var delPrm common.DeletePrm
-		delPrm.Address = prm.addr[i]
-		id := smalls[prm.addr[i]]
-		delPrm.StorageID = id
-
-		_, err = s.blobStor.Delete(ctx, delPrm)
-		if err != nil {
-			s.log.Debug(logs.ShardCantRemoveObjectFromBlobStor,
-				zap.Stringer("object_address", prm.addr[i]),
-				zap.String("error", err.Error()))
 		}
 	}
 
 	return DeleteRes{}, nil
 }
+
+func (s *Shard) deleteObjectFromWriteCacheSafe(ctx context.Context, addr oid.Address) {
+	if s.hasWriteCache() {
+		err := s.writeCache.Delete(ctx, addr)
+		if err != nil && !IsErrNotFound(err) && !errors.Is(err, writecache.ErrReadOnly) {
+			s.log.Warn(logs.ShardCantDeleteObjectFromWriteCache, zap.Error(err))
+		}
+	}
+}
+
+func (s *Shard) deleteFromBlobstorSafe(ctx context.Context, addr oid.Address) {
+	var sPrm meta.StorageIDPrm
+	sPrm.SetAddress(addr)
+
+	res, err := s.metaBase.StorageID(ctx, sPrm)
+	if err != nil {
+		s.log.Debug("can't get storage ID from metabase",
+			zap.Stringer("object", addr),
+			zap.String("error", err.Error()))
+	}
+	storageID := res.StorageID()
+
+	var delPrm common.DeletePrm
+	delPrm.Address = addr
+	delPrm.StorageID = storageID
+
+	_, err = s.blobStor.Delete(ctx, delPrm)
+	if err != nil {
+		s.log.Debug("can't remove object from blobStor",
+			zap.Stringer("object_address", addr),
+			zap.String("error", err.Error()))
+	}
+}
+
+func (s *Shard) deleteFromMetabase(ctx context.Context, addr oid.Address) error {
+	var delPrm meta.DeletePrm
+	delPrm.SetAddresses(addr)
+
+	res, err := s.metaBase.Delete(ctx, delPrm)
+	if err != nil {
+		return err
+	}
+	s.decObjectCounterBy(physical, res.RawObjectsRemoved())
+	s.decObjectCounterBy(logical, res.AvailableObjectsRemoved())
+	removedPayload := res.RemovedPhysicalObjectSizes()[0]
+	logicalRemovedPayload := res.RemovedLogicalObjectSizes()[0]
+	if logicalRemovedPayload > 0 {
+		s.addToContainerSize(addr.Container().EncodeToString(), -int64(logicalRemovedPayload))
+	}
+	s.addToPayloadSize(-int64(removedPayload))
+
+	return nil
+}

pkg/local_object_storage/shard/gc.go

@@ -197,6 +197,14 @@ func (gc *gc) stop() {
 // with GC-marked graves.
 // Does nothing if shard is in "read-only" mode.
 func (s *Shard) removeGarbage() {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	s.gcCancel.Store(cancel)
+	if s.setModeRequested.Load() {
+		return
+	}
+
 	s.m.RLock()
 	defer s.m.RUnlock()
 
@@ -211,6 +219,12 @@ func (s *Shard) removeGarbage() {
 
 	var iterPrm meta.GarbageIterationPrm
 	iterPrm.SetHandler(func(g meta.GarbageObject) error {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
 		buf = append(buf, g.Address())
 
 		if len(buf) == s.rmBatchSize {
@@ -237,7 +251,7 @@ func (s *Shard) removeGarbage() {
 	deletePrm.SetAddresses(buf...)
 
 	// delete accumulated objects
-	_, err = s.delete(context.TODO(), deletePrm)
+	_, err = s.delete(ctx, deletePrm)
 	if err != nil {
 		s.log.Warn(logs.ShardCouldNotDeleteTheObjects,
 			zap.String("error", err.Error()),

pkg/local_object_storage/shard/gc_internal_test.go

@@ -0,0 +1,144 @@
+package shard
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+	"time"
+
+	objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
+	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/panjf2000/ants/v2"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/zap/zaptest"
+)
+
+func Test_ObjectNotFoundIfNotDeletedFromMetabase(t *testing.T) {
+	t.Parallel()
+
+	rootPath := t.TempDir()
+
+	var sh *Shard
+
+	l := &logger.Logger{Logger: zaptest.NewLogger(t)}
+	blobOpts := []blobstor.Option{
+		blobstor.WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}),
+		blobstor.WithStorages([]blobstor.SubStorage{
+			{
+				Storage: blobovniczatree.NewBlobovniczaTree(
+					blobovniczatree.WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}),
+					blobovniczatree.WithRootPath(filepath.Join(rootPath, "blob", "blobovnicza")),
+					blobovniczatree.WithBlobovniczaShallowDepth(1),
+					blobovniczatree.WithBlobovniczaShallowWidth(1)),
+				Policy: func(_ *object.Object, data []byte) bool {
+					return len(data) <= 1<<20
+				},
+			},
+			{
+				Storage: fstree.New(
+					fstree.WithPath(filepath.Join(rootPath, "blob"))),
+			},
+		}),
+	}
+
+	opts := []Option{
+		WithID(NewIDFromBytes([]byte{})),
+		WithLogger(l),
+		WithBlobStorOptions(blobOpts...),
+		WithMetaBaseOptions(
+			meta.WithPath(filepath.Join(rootPath, "meta")),
+			meta.WithEpochState(epochState{}),
+		),
+		WithPiloramaOptions(pilorama.WithPath(filepath.Join(rootPath, "pilorama"))),
+		WithDeletedLockCallback(func(_ context.Context, addresses []oid.Address) {
+			sh.HandleDeletedLocks(addresses)
+		}),
+		WithExpiredLocksCallback(func(ctx context.Context, epoch uint64, a []oid.Address) {
+			sh.HandleExpiredLocks(ctx, epoch, a)
+		}),
+		WithGCWorkerPoolInitializer(func(sz int) util.WorkerPool {
+			pool, err := ants.NewPool(sz)
+			require.NoError(t, err)
+			return pool
+		}),
+		WithGCRemoverSleepInterval(1 * time.Second),
+	}
+
+	sh = New(opts...)
+
+	require.NoError(t, sh.Open())
+	require.NoError(t, sh.Init(context.Background()))
+
+	t.Cleanup(func() {
+		require.NoError(t, sh.Close())
+	})
+
+	cnr := cidtest.ID()
+	obj := testutil.GenerateObjectWithCID(cnr)
+	objID, _ := obj.ID()
+	var addr oid.Address
+	addr.SetContainer(cnr)
+	addr.SetObject(objID)
+
+	var putPrm PutPrm
+	putPrm.SetObject(obj)
+
+	_, err := sh.Put(context.Background(), putPrm)
+	require.NoError(t, err)
+
+	var getPrm GetPrm
+	getPrm.SetAddress(objectCore.AddressOf(obj))
+	_, err = sh.Get(context.Background(), getPrm)
+	require.NoError(t, err, "failed to get")
+
+	//inhume
+	var inhumePrm InhumePrm
+	inhumePrm.MarkAsGarbage(addr)
+	_, err = sh.Inhume(context.Background(), inhumePrm)
+	require.NoError(t, err, "failed to inhume")
+	_, err = sh.Get(context.Background(), getPrm)
+	require.Error(t, err, "get returned error")
+	require.True(t, IsErrNotFound(err), "invalid error type")
+
+	//storageID
+	var metaStIDPrm meta.StorageIDPrm
+	metaStIDPrm.SetAddress(addr)
+	storageID, err := sh.metaBase.StorageID(context.Background(), metaStIDPrm)
+	require.NoError(t, err, "failed to get storage ID")
+
+	//check existance in blobstore
+	var bsExisted common.ExistsPrm
+	bsExisted.Address = addr
+	bsExisted.StorageID = storageID.StorageID()
+	exRes, err := sh.blobStor.Exists(context.Background(), bsExisted)
+	require.NoError(t, err, "failed to check blobstore existance")
+	require.True(t, exRes.Exists, "invalid blobstore existance result")
+
+	//drop from blobstor
+	var bsDeletePrm common.DeletePrm
+	bsDeletePrm.Address = addr
+	bsDeletePrm.StorageID = storageID.StorageID()
+	_, err = sh.blobStor.Delete(context.Background(), bsDeletePrm)
+	require.NoError(t, err, "failed to delete from blobstore")
+
+	//check existance in blobstore
+	exRes, err = sh.blobStor.Exists(context.Background(), bsExisted)
+	require.NoError(t, err, "failed to check blobstore existance")
+	require.False(t, exRes.Exists, "invalid blobstore existance result")
+
+	//get should return object not found
+	_, err = sh.Get(context.Background(), getPrm)
+	require.Error(t, err, "get returned no error")
+	require.True(t, IsErrNotFound(err), "invalid error type")
+}

pkg/local_object_storage/shard/mode.go

@@ -19,8 +19,8 @@ var ErrDegradedMode = logicerr.New("shard is in degraded mode")
 // Returns any error encountered that did not allow
 // setting shard mode.
 func (s *Shard) SetMode(m mode.Mode) error {
-	s.m.Lock()
+	unlock := s.lockExclusive()
-	defer s.m.Unlock()
+	defer unlock()
 
 	return s.setMode(m)
 }

pkg/local_object_storage/shard/shard.go

@@ -3,6 +3,7 @@ package shard
 import (
 	"context"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
@@ -32,6 +33,9 @@ type Shard struct {
 	metaBase *meta.DB
 
 	tsSource TombstoneSource
+
+	gcCancel         atomic.Value
+	setModeRequested atomic.Bool
 }
 
 // Option represents Shard's constructor option.
@@ -217,12 +221,12 @@ func WithWriteCache(use bool) Option {
 }
 
 // hasWriteCache returns bool if write cache exists on shards.
-func (s Shard) hasWriteCache() bool {
+func (s *Shard) hasWriteCache() bool {
 	return s.cfg.useWriteCache
 }
 
 // needRefillMetabase returns true if metabase is needed to be refilled.
-func (s Shard) needRefillMetabase() bool {
+func (s *Shard) needRefillMetabase() bool {
 	return s.cfg.refillMetabase
 }