[#1337] shard: Disable background rebuild

Since `frostfs-cli control shards rebuild` command was added,
there is no need for background rebuild now.
For failover tests used used value 1 to rebuild only schema change.

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

cmd/frostfs-node/config.go

@@ -126,8 +126,6 @@ type shardCfg struct {
 	refillMetabaseWorkersCount int
 	mode                       shardmode.Mode
 
-	rebuildWorkersCount uint32
-
 	metaCfg struct {
 		path          string
 		perm          fs.FileMode
@@ -240,7 +238,6 @@ func (a *applicationConfiguration) updateShardConfig(c *config.Config, oldConfig
 
 	newConfig.refillMetabase = oldConfig.RefillMetabase()
 	newConfig.refillMetabaseWorkersCount = oldConfig.RefillMetabaseWorkersCount()
-	newConfig.rebuildWorkersCount = oldConfig.RebuildWorkerCount()
 	newConfig.mode = oldConfig.Mode()
 	newConfig.compress = oldConfig.Compress()
 	newConfig.estimateCompressibility = oldConfig.EstimateCompressibility()
@@ -998,7 +995,6 @@ func (c *cfg) getShardOpts(ctx context.Context, shCfg shardCfg) shardOptsWithID
 		shard.WithLogger(c.log),
 		shard.WithRefillMetabase(shCfg.refillMetabase),
 		shard.WithRefillMetabaseWorkersCount(shCfg.refillMetabaseWorkersCount),
-		shard.WithRebuildWorkersCount(shCfg.rebuildWorkersCount),
 		shard.WithMode(shCfg.mode),
 		shard.WithBlobStorOptions(blobstoreOpts...),
 		shard.WithMetaBaseOptions(mbOptions...),

cmd/frostfs-node/config/engine/config_test.go

@@ -119,7 +119,6 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, false, sc.RefillMetabase())
 				require.Equal(t, mode.ReadOnly, sc.Mode())
 				require.Equal(t, 100, sc.RefillMetabaseWorkersCount())
-				require.Equal(t, uint32(1000), sc.RebuildWorkerCount())
 			case 1:
 				require.Equal(t, "tmp/1/blob/pilorama.db", pl.Path())
 				require.Equal(t, fs.FileMode(0o644), pl.Perm())
@@ -175,7 +174,6 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, true, sc.RefillMetabase())
 				require.Equal(t, mode.ReadWrite, sc.Mode())
 				require.Equal(t, shardconfig.RefillMetabaseWorkersCountDefault, sc.RefillMetabaseWorkersCount())
-				require.Equal(t, uint32(shardconfig.RebuildWorkersCountDefault), sc.RebuildWorkerCount())
 			}
 			return nil
 		})

cmd/frostfs-node/config/engine/shard/config.go

@@ -19,7 +19,6 @@ const (
 	SmallSizeLimitDefault                   = 1 << 20
 	EstimateCompressibilityThresholdDefault = 0.1
 	RefillMetabaseWorkersCountDefault       = 500
-	RebuildWorkersCountDefault              = 5
 )
 
 // From wraps config section into Config.
@@ -150,20 +149,6 @@ func (x *Config) RefillMetabaseWorkersCount() int {
 	return RefillMetabaseWorkersCountDefault
 }
 
-// RebuildWorkersCount returns the value of "resync_metabase_worker_count" config parameter.
-//
-// Returns RebuildWorkersCountDefault if the value is not a positive number.
-func (x *Config) RebuildWorkerCount() uint32 {
-	v := config.Uint32Safe(
-		(*config.Config)(x),
-		"rebuild_worker_count",
-	)
-	if v > 0 {
-		return v
-	}
-	return RebuildWorkersCountDefault
-}
-
 // Mode return the value of "mode" config parameter.
 //
 // Panics if read the value is not one of predefined

config/example/node.env

@@ -94,7 +94,6 @@ FROSTFS_STORAGE_SHARD_RO_ERROR_THRESHOLD=100
 ### Flag to refill Metabase from BlobStor
 FROSTFS_STORAGE_SHARD_0_RESYNC_METABASE=false
 FROSTFS_STORAGE_SHARD_0_RESYNC_METABASE_WORKER_COUNT=100
-FROSTFS_STORAGE_SHARD_0_REBUILD_WORKER_COUNT=1000
 ### Flag to set shard mode
 FROSTFS_STORAGE_SHARD_0_MODE=read-only
 ### Write cache config

config/example/node.json

@@ -140,7 +140,6 @@
         "mode": "read-only",
         "resync_metabase": false,
         "resync_metabase_worker_count": 100,
-        "rebuild_worker_count": 1000,
         "writecache": {
           "enabled": false,
           "no_sync": true,

config/example/node.yaml

@@ -164,7 +164,6 @@ storage:
         # disabled (do not work with the shard, allows to not remove it from the config)
       resync_metabase: false  # sync metabase with blobstor on start, expensive, leave false until complete understanding
       resync_metabase_worker_count: 100
-      rebuild_worker_count: 1000 # count of rebuild storage concurrent workers
 
       writecache:
         enabled: false

docs/storage-node-configuration.md

@@ -189,7 +189,6 @@ The following table describes configuration for each shard.
 | `mode`                                           | `string`                                    | `read-write`  | Shard Mode.<br/>Possible values:  `read-write`, `read-only`, `degraded`, `degraded-read-only`, `disabled`                                                                                                         |
 | `resync_metabase`                                | `bool`                                      | `false`       | Flag to enable metabase resync on start.                                                                                                                                                                          |
 | `resync_metabase_worker_count`                   | `int`                                       | `1000`        | Count of concurrent workers to resync metabase.                                                                                                                                                                   |
-| `rebuild_worker_count`                           | `int`                                       | `5`           | Count of concurrent workers to rebuild blobstore.                                                                                                                                                                 |
 | `writecache`                                     | [Writecache config](#writecache-subsection) |               | Write-cache configuration.                                                                                                                                                                                        |
 | `metabase`                                       | [Metabase config](#metabase-subsection)     |               | Metabase configuration.                                                                                                                                                                                           |
 | `blobstor`                                       | [Blobstor config](#blobstor-subsection)     |               | Blobstor configuration.                                                                                                                                                                                           |

pkg/local_object_storage/blobstor/blobovniczatree/rebuild.go

@@ -60,7 +60,7 @@ func (b *Blobovniczas) Rebuild(ctx context.Context, prm common.RebuildPrm) (comm
 	b.log.Debug(logs.BlobovniczaTreeCompletedPreviousRebuildSuccess)
 
 	b.log.Debug(logs.BlobovniczaTreeCollectingDBToRebuild)
-	dbsToMigrate, err := b.getDBsToRebuild(ctx, prm.Action)
+	dbsToMigrate, err := b.getDBsToRebuild(ctx, prm.FillPercent)
 	if err != nil {
 		b.log.Warn(logs.BlobovniczaTreeCollectingDBToRebuildFailed, zap.Error(err))
 		success = false
@@ -94,27 +94,20 @@ func (b *Blobovniczas) migrateDBs(ctx context.Context, dbs []string, prm common.
 	return res, nil
 }
 
-func (b *Blobovniczas) getDBsToRebuild(ctx context.Context, action common.RebuildAction) ([]string, error) {
-	schemaChange := make(map[string]struct{})
-	fillPercent := make(map[string]struct{})
-	var err error
-	if action.SchemaChange {
-		schemaChange, err = b.selectDBsDoNotMatchSchema(ctx)
+func (b *Blobovniczas) getDBsToRebuild(ctx context.Context, fillPercent int) ([]string, error) {
+	withSchemaChange, err := b.selectDBsDoNotMatchSchema(ctx)
 	if err != nil {
 		return nil, err
 	}
-	}
-	if action.FillPercent {
-		fillPercent, err = b.selectDBsDoNotMatchFillPercent(ctx, action.FillPercentValue)
+	withFillPercent, err := b.selectDBsDoNotMatchFillPercent(ctx, fillPercent)
 	if err != nil {
 		return nil, err
 	}
+	for k := range withFillPercent {
+		withSchemaChange[k] = struct{}{}
 	}
-	for k := range fillPercent {
-		schemaChange[k] = struct{}{}
-	}
-	result := make([]string, 0, len(schemaChange))
-	for db := range schemaChange {
+	result := make([]string, 0, len(withSchemaChange))
+	for db := range withSchemaChange {
 		result = append(result, db)
 	}
 	return result, nil

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_failover_test.go

@@ -145,7 +145,7 @@ func testRebuildFailoverValidate(t *testing.T, dir string, obj *objectSDK.Object
 		WithBlobovniczaShallowWidth(2),
 		WithBlobovniczaShallowDepth(2),
 		WithRootPath(dir),
-		WithBlobovniczaSize(100*1024*1024),
+		WithBlobovniczaSize(10*1024),
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000))
 	require.NoError(t, b.Open(mode.ComponentReadWrite))
@@ -164,6 +164,7 @@ func testRebuildFailoverValidate(t *testing.T, dir string, obj *objectSDK.Object
 	rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
 		MetaStorage:   metaStub,
 		WorkerLimiter: &rebuildLimiterStub{},
+		FillPercent:   1,
 	})
 	require.NoError(t, err)
 	require.Equal(t, uint64(1), rRes.ObjectsMoved)

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go

@@ -79,11 +79,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
 			MetaStorage:   metaStub,
 			WorkerLimiter: &rebuildLimiterStub{},
-			Action: common.RebuildAction{
-				SchemaChange:     false,
-				FillPercent:      true,
-				FillPercentValue: 60,
-			},
+			FillPercent:   60,
 		})
 		require.NoError(t, err)
 		dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0
@@ -135,11 +131,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
 			MetaStorage:   metaStub,
 			WorkerLimiter: &rebuildLimiterStub{},
-			Action: common.RebuildAction{
-				SchemaChange:     false,
-				FillPercent:      true,
-				FillPercentValue: 90, // 64KB / 100KB = 64%
-			},
+			FillPercent:   90, // 64KB / 100KB = 64%
 		})
 		require.NoError(t, err)
 		dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0
@@ -204,11 +196,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
 			MetaStorage:   metaStub,
 			WorkerLimiter: &rebuildLimiterStub{},
-			Action: common.RebuildAction{
-				SchemaChange:     false,
-				FillPercent:      true,
-				FillPercentValue: 80,
-			},
+			FillPercent:   80,
 		})
 		require.NoError(t, err)
 		require.Equal(t, uint64(49), rRes.FilesRemoved)
@@ -281,11 +269,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
 			MetaStorage:   metaStub,
 			WorkerLimiter: &rebuildLimiterStub{},
-			Action: common.RebuildAction{
-				SchemaChange:     false,
-				FillPercent:      true,
-				FillPercentValue: 80,
-			},
+			FillPercent:   80,
 		})
 		require.NoError(t, err)
 		require.Equal(t, uint64(49), rRes.FilesRemoved)
@@ -357,7 +341,7 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 	var rPrm common.RebuildPrm
 	rPrm.MetaStorage = metaStub
 	rPrm.WorkerLimiter = &rebuildLimiterStub{}
-	rPrm.Action = common.RebuildAction{SchemaChange: true}
+	rPrm.FillPercent = 1
 	rRes, err := b.Rebuild(context.Background(), rPrm)
 	require.NoError(t, err)
 	dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0
@@ -446,7 +430,7 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 	var rPrm common.RebuildPrm
 	rPrm.MetaStorage = metaStub
 	rPrm.WorkerLimiter = &rebuildLimiterStub{}
-	rPrm.Action = common.RebuildAction{SchemaChange: true}
+	rPrm.FillPercent = 1
 	rRes, err := b.Rebuild(context.Background(), rPrm)
 	require.NoError(t, err)
 	dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0

pkg/local_object_storage/blobstor/common/rebuild.go

@@ -11,17 +11,10 @@ type RebuildRes struct {
 	FilesRemoved uint64
 }
 
-type RebuildAction struct {
-	SchemaChange bool
-
-	FillPercent      bool
-	FillPercentValue int
-}
-
 type RebuildPrm struct {
 	MetaStorage   MetaStorage
 	WorkerLimiter ConcurrentWorkersLimiter
-	Action        RebuildAction
+	FillPercent   int
 }
 
 type MetaStorage interface {

pkg/local_object_storage/blobstor/rebuild.go

@@ -18,14 +18,14 @@ type ConcurrentWorkersLimiter interface {
 	ReleaseWorkSlot()
 }
 
-func (b *BlobStor) Rebuild(ctx context.Context, upd StorageIDUpdate, limiter ConcurrentWorkersLimiter, action common.RebuildAction) error {
+func (b *BlobStor) Rebuild(ctx context.Context, upd StorageIDUpdate, limiter ConcurrentWorkersLimiter, fillPercent int) error {
 	var summary common.RebuildRes
 	var rErr error
 	for _, storage := range b.storage {
 		res, err := storage.Storage.Rebuild(ctx, common.RebuildPrm{
 			MetaStorage:   upd,
 			WorkerLimiter: limiter,
-			Action:        action,
+			FillPercent:   fillPercent,
 		})
 		summary.FilesRemoved += res.FilesRemoved
 		summary.ObjectsMoved += res.ObjectsMoved

pkg/local_object_storage/shard/control.go

@@ -129,8 +129,8 @@ func (s *Shard) Init(ctx context.Context) error {
 
 	s.gc.init(ctx)
 
-	s.rb = newRebuilder(NewRebuildLimiter(s.rebuildWorkersCount))
-	if !m.NoMetabase() && !s.rebuildDisabled {
+	s.rb = newRebuilder()
+	if !m.NoMetabase() {
 		s.rb.Start(ctx, s.blobStor, s.metaBase, s.log)
 	}
 	s.writecacheSealCancel.Store(dummyCancel)
@@ -398,7 +398,7 @@ func (s *Shard) Reload(ctx context.Context, opts ...Option) error {
 	defer unlock()
 
 	s.rb.Stop(s.log)
-	if !s.info.Mode.NoMetabase() && !s.rebuildDisabled {
+	if !s.info.Mode.NoMetabase() {
 		defer func() {
 			s.rb.Start(ctx, s.blobStor, s.metaBase, s.log)
 		}()

pkg/local_object_storage/shard/gc_test.go

@@ -187,7 +187,7 @@ func TestGCDropsObjectInhumedFromWritecache(t *testing.T) {
 
 func testGCDropsObjectInhumedFromWritecache(t *testing.T, flushbeforeInhume bool) {
 	sh := newCustomShard(t, true, shardOptions{
-		additionalShardOptions: []Option{WithDisabledGC(), WithDisabledRebuild()},
+		additionalShardOptions: []Option{WithDisabledGC()},
 		wcOpts:                 []writecache.Option{writecache.WithDisableBackgroundFlush()},
 	})
 	defer func() { require.NoError(t, sh.Close()) }()

pkg/local_object_storage/shard/rebuild.go

@@ -7,7 +7,6 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
@@ -17,6 +16,8 @@ import (
 	"go.uber.org/zap"
 )
 
+var ErrRebuildInProgress = errors.New("shard rebuild in progress")
+
 type RebuildWorkerLimiter interface {
 	AcquireWorkSlot(ctx context.Context) error
 	ReleaseWorkSlot()
@@ -47,24 +48,22 @@ func (l *rebuildLimiter) ReleaseWorkSlot() {
 
 type rebuildTask struct {
 	limiter     RebuildWorkerLimiter
-	action  common.RebuildAction
+	fillPercent int
 }
 
 type rebuilder struct {
 	mtx    *sync.Mutex
 	wg     *sync.WaitGroup
 	cancel func()
-	limiter RebuildWorkerLimiter
 	done   chan struct{}
 	tasks  chan rebuildTask
 }
 
-func newRebuilder(l RebuildWorkerLimiter) *rebuilder {
+func newRebuilder() *rebuilder {
 	return &rebuilder{
 		mtx:   &sync.Mutex{},
 		wg:    &sync.WaitGroup{},
-		limiter: l,
-		tasks:   make(chan rebuildTask, 10),
+		tasks: make(chan rebuildTask),
 	}
 }
 
@@ -89,25 +88,14 @@ func (r *rebuilder) Start(ctx context.Context, bs *blobstor.BlobStor, mb *meta.D
 				if !ok {
 					continue
 				}
-				runRebuild(ctx, bs, mb, log, t.action, t.limiter)
+				runRebuild(ctx, bs, mb, log, t.fillPercent, t.limiter)
 			}
 		}
 	}()
-	select {
-	case <-ctx.Done():
-		return
-	case r.tasks <- rebuildTask{
-		limiter: r.limiter,
-		action: common.RebuildAction{
-			SchemaChange: true,
-		},
-	}:
-		return
-	}
 }
 
 func runRebuild(ctx context.Context, bs *blobstor.BlobStor, mb *meta.DB, log *logger.Logger,
-	action common.RebuildAction, limiter RebuildWorkerLimiter,
+	fillPercent int, limiter RebuildWorkerLimiter,
 ) {
 	select {
 	case <-ctx.Done():
@@ -115,23 +103,25 @@ func runRebuild(ctx context.Context, bs *blobstor.BlobStor, mb *meta.DB, log *lo
 	default:
 	}
 	log.Info(logs.BlobstoreRebuildStarted)
-	if err := bs.Rebuild(ctx, &mbStorageIDUpdate{mb: mb}, limiter, action); err != nil {
+	if err := bs.Rebuild(ctx, &mbStorageIDUpdate{mb: mb}, limiter, fillPercent); err != nil {
 		log.Warn(logs.FailedToRebuildBlobstore, zap.Error(err))
 	} else {
 		log.Info(logs.BlobstoreRebuildCompletedSuccessfully)
 	}
 }
 
-func (r *rebuilder) ScheduleRebuild(ctx context.Context, limiter RebuildWorkerLimiter, action common.RebuildAction,
+func (r *rebuilder) ScheduleRebuild(ctx context.Context, limiter RebuildWorkerLimiter, fillPercent int,
 ) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
 	case r.tasks <- rebuildTask{
 		limiter:     limiter,
-		action:  action,
+		fillPercent: fillPercent,
 	}:
 		return nil
+	default:
+		return ErrRebuildInProgress
 	}
 }
 
@@ -198,9 +188,5 @@ func (s *Shard) ScheduleRebuild(ctx context.Context, p RebuildPrm) error {
 		return ErrDegradedMode
 	}
 
-	return s.rb.ScheduleRebuild(ctx, p.ConcurrencyLimiter, common.RebuildAction{
-		SchemaChange:     true,
-		FillPercent:      true,
-		FillPercentValue: int(p.TargetFillPercent),
-	})
+	return s.rb.ScheduleRebuild(ctx, p.ConcurrencyLimiter, int(p.TargetFillPercent))
 }

pkg/local_object_storage/shard/shard.go

@@ -139,10 +139,6 @@ type cfg struct {
 	metricsWriter MetricsWriter
 
 	reportErrorFunc func(selfID string, message string, err error)
-
-	rebuildWorkersCount uint32
-
-	rebuildDisabled bool
 }
 
 func defaultCfg() *cfg {
@@ -151,7 +147,6 @@ func defaultCfg() *cfg {
 		log:                         &logger.Logger{Logger: zap.L()},
 		gcCfg:                       defaultGCCfg(),
 		reportErrorFunc:             func(string, string, error) {},
-		rebuildWorkersCount:         1,
 		zeroSizeContainersCallback:  func(context.Context, []cid.ID) {},
 		zeroCountContainersCallback: func(context.Context, []cid.ID) {},
 	}
@@ -384,14 +379,6 @@ func WithExpiredCollectorWorkerCount(count int) Option {
 	}
 }
 
-// WithRebuildWorkersCount return option to set concurrent
-// workers count of storage rebuild operation.
-func WithRebuildWorkersCount(count uint32) Option {
-	return func(c *cfg) {
-		c.rebuildWorkersCount = count
-	}
-}
-
 // WithDisabledGC disables GC.
 // For testing purposes only.
 func WithDisabledGC() Option {
@@ -414,14 +401,6 @@ func WithZeroCountCallback(cb EmptyContainersCallback) Option {
 	}
 }
 
-// WithDisabledRebuild returns an option to disable a shard rebuild.
-// For testing purposes only.
-func WithDisabledRebuild() Option {
-	return func(c *cfg) {
-		c.rebuildDisabled = true
-	}
-}
-
 func (s *Shard) fillInfo() {
 	s.cfg.info.MetaBaseInfo = s.metaBase.DumpInfo()
 	s.cfg.info.BlobStorInfo = s.blobStor.DumpInfo()