[#698] blobovniczatree: Init blobovniczas concurrently

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

cmd/frostfs-node/config.go

@@ -181,6 +181,7 @@ type subStorageCfg struct {
 	width           uint64
 	leafWidth       uint64
 	openedCacheSize int
+	initWorkerCount int
 }
 
 // readConfig fills applicationConfiguration with raw configuration values
@@ -298,6 +299,7 @@ func (a *applicationConfiguration) setShardStorageConfig(newConfig *shardCfg, ol
 			sCfg.width = sub.ShallowWidth()
 			sCfg.leafWidth = sub.LeafWidth()
 			sCfg.openedCacheSize = sub.OpenedCacheSize()
+			sCfg.initWorkerCount = sub.InitWorkerCount()
 		case fstree.Type:
 			sub := fstreeconfig.From((*config.Config)(storagesCfg[i]))
 			sCfg.depth = sub.Depth()
@@ -796,6 +798,7 @@ func (c *cfg) getSubstorageOpts(shCfg shardCfg) []blobstor.SubStorage {
 				blobovniczatree.WithBlobovniczaShallowWidth(sRead.width),
 				blobovniczatree.WithBlobovniczaLeafWidth(sRead.leafWidth),
 				blobovniczatree.WithOpenedCacheSize(sRead.openedCacheSize),
+				blobovniczatree.WithInitWorkerCount(sRead.initWorkerCount),
 				blobovniczatree.WithLogger(c.log),
 			}
 

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

@@ -97,6 +97,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
 				require.EqualValues(t, 10, blz.LeafWidth())
+				require.EqualValues(t, 10, blz.InitWorkerCount())
 
 				require.Equal(t, "tmp/0/blob", ss[1].Path())
 				require.EqualValues(t, 0o644, ss[1].Perm())
@@ -146,6 +147,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
 				require.EqualValues(t, 10, blz.LeafWidth())
+				require.EqualValues(t, blobovniczaconfig.InitWorkerCountDefault, blz.InitWorkerCount())
 
 				require.Equal(t, "tmp/1/blob", ss[1].Path())
 				require.EqualValues(t, 0o644, ss[1].Perm())

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

@@ -22,6 +22,9 @@ const (
 
 	// OpenedCacheSizeDefault is a default cache size of opened Blobovnicza's.
 	OpenedCacheSizeDefault = 16
+
+	// InitWorkerCountDefault is a default workers count to initialize Blobovnicza's.
+	InitWorkerCountDefault = 5
 )
 
 // From wraps config section into Config.
@@ -112,3 +115,19 @@ func (x *Config) LeafWidth() uint64 {
 		"leaf_width",
 	)
 }
+
+// InitWorkerCount returns the value of "init_worker_count" config parameter.
+//
+// Returns InitWorkerCountDefault if the value is not a positive number.
+func (x *Config) InitWorkerCount() int {
+	d := config.IntSafe(
+		(*config.Config)(x),
+		"init_worker_count",
+	)
+
+	if d > 0 {
+		return int(d)
+	}
+
+	return InitWorkerCountDefault
+}

config/example/node.env

@@ -125,6 +125,7 @@ FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_DEPTH=1
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_WIDTH=4
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_OPENED_CACHE_CAPACITY=50
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_LEAF_WIDTH=10
+FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_INIT_WORKER_COUNT=10
 ### FSTree config
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_1_TYPE=fstree
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_1_PATH=tmp/0/blob

config/example/node.json

@@ -172,7 +172,8 @@
             "depth": 1,
             "width": 4,
             "opened_cache_capacity": 50,
-            "leaf_width": 10
+            "leaf_width": 10,
+            "init_worker_count": 10
           },
           {
             "type": "fstree",

config/example/node.yaml

@@ -184,6 +184,7 @@ storage:
       blobstor:
         - type: blobovnicza
           path: tmp/0/blob/blobovnicza
+          init_worker_count: 10 #count of workers to initialize blobovniczas
         - type: fstree
           path: tmp/0/blob  # blobstor path
 

pkg/local_object_storage/blobstor/blobovniczatree/control.go

@@ -10,6 +10,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"go.uber.org/zap"
+	"golang.org/x/sync/errgroup"
 )
 
 var errFailedToChangeExtensionReadOnly = errors.New("failed to change blobovnicza extension: read only mode")
@@ -49,37 +50,53 @@ func (b *Blobovniczas) initializeDBs(ctx context.Context) error {
 		return err
 	}
 
+	eg, egCtx := errgroup.WithContext(ctx)
+	eg.SetLimit(b.blzInitWorkerCount)
 	visited := make(map[string]struct{})
-	err = b.iterateExistingDBPaths(ctx, func(p string) (bool, error) {
+	err = b.iterateExistingDBPaths(egCtx, func(p string) (bool, error) {
 		visited[p] = struct{}{}
+		eg.Go(func() error {
 			shBlz := b.getBlobovniczaWithoutCaching(p)
 			_, err := shBlz.Open()
-		if err != nil {
-			return true, err
-		}
-		defer shBlz.Close()
-
-		b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))
-		return false, nil
-	})
 			if err != nil {
 				return err
 			}
+			defer shBlz.Close()
 
-	return b.iterateSortedLeaves(ctx, nil, func(p string) (bool, error) {
+			b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))
+			return nil
+		})
+		return false, nil
+	})
+	if err != nil {
+		_ = eg.Wait()
+		return err
+	}
+
+	err = b.iterateSortedLeaves(egCtx, nil, func(p string) (bool, error) {
 		if _, found := visited[p]; found {
 			return false, nil
 		}
+		eg.Go(func() error {
 			shBlz := b.getBlobovniczaWithoutCaching(p)
 			_, err := shBlz.Open()
 			if err != nil {
-			return true, err
+				return err
 			}
 			defer shBlz.Close()
 
 			b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))
+			return nil
+		})
 		return false, nil
 	})
+
+	if err != nil {
+		_ = eg.Wait()
+		return err
+	}
+
+	return eg.Wait()
 }
 
 func (b *Blobovniczas) openManagers() {

pkg/local_object_storage/blobstor/blobovniczatree/option.go

@@ -21,10 +21,10 @@ type cfg struct {
 	blzLeafWidth       uint64
 	compression        *compression.Config
 	blzOpts            []blobovnicza.Option
-	// reportError is the function called when encountering disk errors.
+	reportError        func(string, error) // reportError is the function called when encountering disk errors.
-	reportError      func(string, error)
 	metrics            Metrics
 	waitBeforeDropDB   time.Duration
+	blzInitWorkerCount int
 }
 
 type Option func(*cfg)
@@ -35,6 +35,7 @@ const (
 	defaultBlzShallowDepth    = 2
 	defaultBlzShallowWidth    = 16
 	defaultWaitBeforeDropDB   = 10 * time.Second
+	defaultBlzInitWorkerCount = 5
 )
 
 func initConfig(c *cfg) {
@@ -47,6 +48,7 @@ func initConfig(c *cfg) {
 		reportError:        func(string, error) {},
 		metrics:            &noopMetrics{},
 		waitBeforeDropDB:   defaultWaitBeforeDropDB,
+		blzInitWorkerCount: defaultBlzInitWorkerCount,
 	}
 }
 
@@ -116,3 +118,15 @@ func WithWaitBeforeDropDB(t time.Duration) Option {
 		c.waitBeforeDropDB = t
 	}
 }
+
+// WithInitWorkerCount sets maximum workers count to init blobovnicza tree.
+//
+// Negative or zero value means no limit.
+func WithInitWorkerCount(v int) Option {
+	if v <= 0 {
+		v = -1
+	}
+	return func(c *cfg) {
+		c.blzInitWorkerCount = v
+	}
+}