2025-03-03 10:52:34 +00:00 · 2025-02-21 12:37:04 +00:00 · 2025-02-21 13:42:13 +00:00 · 2025-02-18 12:47:15 +00:00 · 2025-02-19 11:49:35 +00:00 · 2025-02-19 11:50:00 +00:00
43 changed files with 1405 additions and 192 deletions
--- a/cmd/frostfs-node/config.go
+++ b/cmd/frostfs-node/config.go
@ -33,6 +33,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/metrics"
 	internalNet "git.frostfs.info/TrueCloudLab/frostfs-node/internal/net"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/ape/chainbase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	frostfsidcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/frostfsid"
@ -135,6 +136,7 @@ type shardCfg struct {
 	refillMetabase             bool
 	refillMetabaseWorkersCount int
 	mode                       shardmode.Mode
+	limiter                    qos.Limiter

 	metaCfg struct {
 		path          string
@ -254,39 +256,42 @@ func (a *applicationConfiguration) readConfig(c *config.Config) error {
 	return engineconfig.IterateShards(c, false, func(sc *shardconfig.Config) error { return a.updateShardConfig(c, sc) })
 }

-func (a *applicationConfiguration) updateShardConfig(c *config.Config, oldConfig *shardconfig.Config) error {
-	var newConfig shardCfg
+func (a *applicationConfiguration) updateShardConfig(c *config.Config, source *shardconfig.Config) error {
+	var target shardCfg

-	newConfig.refillMetabase = oldConfig.RefillMetabase()
-	newConfig.refillMetabaseWorkersCount = oldConfig.RefillMetabaseWorkersCount()
-	newConfig.mode = oldConfig.Mode()
-	newConfig.compress = oldConfig.Compress()
-	newConfig.estimateCompressibility = oldConfig.EstimateCompressibility()
-	newConfig.estimateCompressibilityThreshold = oldConfig.EstimateCompressibilityThreshold()
-	newConfig.uncompressableContentType = oldConfig.UncompressableContentTypes()
-	newConfig.smallSizeObjectLimit = oldConfig.SmallSizeLimit()
+	target.refillMetabase = source.RefillMetabase()
+	target.refillMetabaseWorkersCount = source.RefillMetabaseWorkersCount()
+	target.mode = source.Mode()
+	target.compress = source.Compress()
+	target.estimateCompressibility = source.EstimateCompressibility()
+	target.estimateCompressibilityThreshold = source.EstimateCompressibilityThreshold()
+	target.uncompressableContentType = source.UncompressableContentTypes()
+	target.smallSizeObjectLimit = source.SmallSizeLimit()

-	a.setShardWriteCacheConfig(&newConfig, oldConfig)
+	a.setShardWriteCacheConfig(&target, source)

-	a.setShardPiloramaConfig(c, &newConfig, oldConfig)
+	a.setShardPiloramaConfig(c, &target, source)

-	if err := a.setShardStorageConfig(&newConfig, oldConfig); err != nil {
+	if err := a.setShardStorageConfig(&target, source); err != nil {
 		return err
 	}

-	a.setMetabaseConfig(&newConfig, oldConfig)
+	a.setMetabaseConfig(&target, source)

-	a.setGCConfig(&newConfig, oldConfig)
+	a.setGCConfig(&target, source)
+	if err := a.setLimiter(&target, source); err != nil {
+		return err
+	}

-	a.EngineCfg.shards = append(a.EngineCfg.shards, newConfig)
+	a.EngineCfg.shards = append(a.EngineCfg.shards, target)

 	return nil
 }

-func (a *applicationConfiguration) setShardWriteCacheConfig(newConfig *shardCfg, oldConfig *shardconfig.Config) {
-	writeCacheCfg := oldConfig.WriteCache()
+func (a *applicationConfiguration) setShardWriteCacheConfig(target *shardCfg, source *shardconfig.Config) {
+	writeCacheCfg := source.WriteCache()
 	if writeCacheCfg.Enabled() {
-		wc := &newConfig.writecacheCfg
+		wc := &target.writecacheCfg

 		wc.enabled = true
 		wc.path = writeCacheCfg.Path()
@ -299,10 +304,10 @@ func (a *applicationConfiguration) setShardWriteCacheConfig(newConfig *shardCfg,
 	}
 }

-func (a *applicationConfiguration) setShardPiloramaConfig(c *config.Config, newConfig *shardCfg, oldConfig *shardconfig.Config) {
+func (a *applicationConfiguration) setShardPiloramaConfig(c *config.Config, target *shardCfg, source *shardconfig.Config) {
 	if config.BoolSafe(c.Sub("tree"), "enabled") {
-		piloramaCfg := oldConfig.Pilorama()
-		pr := &newConfig.piloramaCfg
+		piloramaCfg := source.Pilorama()
+		pr := &target.piloramaCfg

 		pr.enabled = true
 		pr.path = piloramaCfg.Path()
@ -313,8 +318,8 @@ func (a *applicationConfiguration) setShardPiloramaConfig(c *config.Config, newC
 	}
 }

-func (a *applicationConfiguration) setShardStorageConfig(newConfig *shardCfg, oldConfig *shardconfig.Config) error {
-	blobStorCfg := oldConfig.BlobStor()
+func (a *applicationConfiguration) setShardStorageConfig(target *shardCfg, source *shardconfig.Config) error {
+	blobStorCfg := source.BlobStor()
 	storagesCfg := blobStorCfg.Storages()

 	ss := make([]subStorageCfg, 0, len(storagesCfg))
@ -348,13 +353,13 @@ func (a *applicationConfiguration) setShardStorageConfig(newConfig *shardCfg, ol
 		ss = append(ss, sCfg)
 	}

-	newConfig.subStorages = ss
+	target.subStorages = ss
 	return nil
 }

-func (a *applicationConfiguration) setMetabaseConfig(newConfig *shardCfg, oldConfig *shardconfig.Config) {
-	metabaseCfg := oldConfig.Metabase()
-	m := &newConfig.metaCfg
+func (a *applicationConfiguration) setMetabaseConfig(target *shardCfg, source *shardconfig.Config) {
+	metabaseCfg := source.Metabase()
+	m := &target.metaCfg

 	m.path = metabaseCfg.Path()
 	m.perm = metabaseCfg.BoltDB().Perm()
@ -362,12 +367,25 @@ func (a *applicationConfiguration) setMetabaseConfig(newConfig *shardCfg, oldCon
 	m.maxBatchSize = metabaseCfg.BoltDB().MaxBatchSize()
 }

-func (a *applicationConfiguration) setGCConfig(newConfig *shardCfg, oldConfig *shardconfig.Config) {
-	gcCfg := oldConfig.GC()
-	newConfig.gcCfg.removerBatchSize = gcCfg.RemoverBatchSize()
-	newConfig.gcCfg.removerSleepInterval = gcCfg.RemoverSleepInterval()
-	newConfig.gcCfg.expiredCollectorBatchSize = gcCfg.ExpiredCollectorBatchSize()
-	newConfig.gcCfg.expiredCollectorWorkerCount = gcCfg.ExpiredCollectorWorkerCount()
+func (a *applicationConfiguration) setGCConfig(target *shardCfg, source *shardconfig.Config) {
+	gcCfg := source.GC()
+	target.gcCfg.removerBatchSize = gcCfg.RemoverBatchSize()
+	target.gcCfg.removerSleepInterval = gcCfg.RemoverSleepInterval()
+	target.gcCfg.expiredCollectorBatchSize = gcCfg.ExpiredCollectorBatchSize()
+	target.gcCfg.expiredCollectorWorkerCount = gcCfg.ExpiredCollectorWorkerCount()
+}
+
+func (a *applicationConfiguration) setLimiter(target *shardCfg, source *shardconfig.Config) error {
+	limitsConfig := source.Limits()
+	limiter, err := qos.NewLimiter(limitsConfig)
+	if err != nil {
+		return err
+	}
+	if target.limiter != nil {
+		target.limiter.Close()
+	}
+	target.limiter = limiter
+	return nil
 }

 // internals contains application-specific internals that are created
@ -1054,6 +1072,7 @@ func (c *cfg) getShardOpts(ctx context.Context, shCfg shardCfg) shardOptsWithID

 			return pool
 		}),
+		shard.WithLimiter(shCfg.limiter),
 	}
 	return sh
 }
--- a/cmd/frostfs-node/config/engine/config_test.go
+++ b/cmd/frostfs-node/config/engine/config_test.go
@ -11,6 +11,7 @@ import (
 	blobovniczaconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza"
 	fstreeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor/fstree"
 	gcconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/gc"
+	limitsconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/limits"
 	piloramaconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/pilorama"
 	writecacheconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/writecache"
 	configtest "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/test"
@ -76,6 +77,7 @@ func TestEngineSection(t *testing.T) {
 			ss := blob.Storages()
 			pl := sc.Pilorama()
 			gc := sc.GC()
+			limits := sc.Limits()

 			switch num {
 			case 0:
@ -134,6 +136,75 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, false, sc.RefillMetabase())
 				require.Equal(t, mode.ReadOnly, sc.Mode())
 				require.Equal(t, 100, sc.RefillMetabaseWorkersCount())
+
+				readLimits := limits.Read()
+				writeLimits := limits.Write()
+				require.Equal(t, 30*time.Second, readLimits.IdleTimeout)
+				require.Equal(t, int64(10_000), readLimits.MaxRunningOps)
+				require.Equal(t, int64(1_000), readLimits.MaxWaitingOps)
+				require.Equal(t, 45*time.Second, writeLimits.IdleTimeout)
+				require.Equal(t, int64(1_000), writeLimits.MaxRunningOps)
+				require.Equal(t, int64(100), writeLimits.MaxWaitingOps)
+				require.ElementsMatch(t, readLimits.Tags,
+					[]limitsconfig.IOTagConfig{
+						{
+							Tag:         "internal",
+							Weight:      toPtr(20),
+							ReservedOps: toPtr(1000),
+							LimitOps:    toPtr(0),
+						},
+						{
+							Tag:         "client",
+							Weight:      toPtr(70),
+							ReservedOps: toPtr(10000),
+						},
+						{
+							Tag:         "background",
+							Weight:      toPtr(5),
+							LimitOps:    toPtr(10000),
+							ReservedOps: toPtr(0),
+						},
+						{
+							Tag:      "writecache",
+							Weight:   toPtr(5),
+							LimitOps: toPtr(25000),
+						},
+						{
+							Tag:      "policer",
+							Weight:   toPtr(5),
+							LimitOps: toPtr(25000),
+						},
+					})
+				require.ElementsMatch(t, writeLimits.Tags,
+					[]limitsconfig.IOTagConfig{
+						{
+							Tag:         "internal",
+							Weight:      toPtr(200),
+							ReservedOps: toPtr(100),
+							LimitOps:    toPtr(0),
+						},
+						{
+							Tag:         "client",
+							Weight:      toPtr(700),
+							ReservedOps: toPtr(1000),
+						},
+						{
+							Tag:         "background",
+							Weight:      toPtr(50),
+							LimitOps:    toPtr(1000),
+							ReservedOps: toPtr(0),
+						},
+						{
+							Tag:      "writecache",
+							Weight:   toPtr(50),
+							LimitOps: toPtr(2500),
+						},
+						{
+							Tag:      "policer",
+							Weight:   toPtr(50),
+							LimitOps: toPtr(2500),
+						},
+					})
 			case 1:
 				require.Equal(t, "tmp/1/blob/pilorama.db", pl.Path())
 				require.Equal(t, fs.FileMode(0o644), pl.Perm())
@ -188,6 +259,17 @@ 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())
+
+				readLimits := limits.Read()
+				writeLimits := limits.Write()
+				require.Equal(t, limitsconfig.DefaultIdleTimeout, readLimits.IdleTimeout)
+				require.Equal(t, limitsconfig.NoLimit, readLimits.MaxRunningOps)
+				require.Equal(t, limitsconfig.NoLimit, readLimits.MaxWaitingOps)
+				require.Equal(t, limitsconfig.DefaultIdleTimeout, writeLimits.IdleTimeout)
+				require.Equal(t, limitsconfig.NoLimit, writeLimits.MaxRunningOps)
+				require.Equal(t, limitsconfig.NoLimit, writeLimits.MaxWaitingOps)
+				require.Equal(t, 0, len(readLimits.Tags))
+				require.Equal(t, 0, len(writeLimits.Tags))
 			}
 			return nil
 		})
@ -201,3 +283,7 @@ func TestEngineSection(t *testing.T) {
 		configtest.ForEnvFileType(t, path, fileConfigTest)
 	})
 }
+
+func toPtr(v float64) *float64 {
+	return &v
+}
--- a/cmd/frostfs-node/config/engine/shard/config.go
+++ b/cmd/frostfs-node/config/engine/shard/config.go
@ -4,6 +4,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
 	blobstorconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor"
 	gcconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/gc"
+	limitsconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/limits"
 	metabaseconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/metabase"
 	piloramaconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/pilorama"
 	writecacheconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/writecache"
@ -125,6 +126,14 @@ func (x *Config) GC() *gcconfig.Config {
 	)
 }

+// Limits returns "limits" subsection as a limitsconfig.Config.
+func (x *Config) Limits() *limitsconfig.Config {
+	return limitsconfig.From(
+		(*config.Config)(x).
+			Sub("limits"),
+	)
+}
+
 // RefillMetabase returns the value of "resync_metabase" config parameter.
 //
 // Returns false if the value is not a valid bool.
--- a/cmd/frostfs-node/config/engine/shard/limits/config.go
+++ b/cmd/frostfs-node/config/engine/shard/limits/config.go
@ -0,0 +1,130 @@
+package limits
+
+import (
+	"math"
+	"strconv"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	"github.com/spf13/cast"
+)
+
+const (
+	NoLimit            int64 = math.MaxInt64
+	DefaultIdleTimeout       = 5 * time.Minute
+)
+
+// From wraps config section into Config.
+func From(c *config.Config) *Config {
+	return (*Config)(c)
+}
+
+// Config is a wrapper over the config section
+// which provides access to Shard's limits configurations.
+type Config config.Config
+
+// Read returns the value of "read" limits config section.
+func (x *Config) Read() OpConfig {
+	return x.parse("read")
+}
+
+// Write returns the value of "write" limits config section.
+func (x *Config) Write() OpConfig {
+	return x.parse("write")
+}
+
+func (x *Config) parse(sub string) OpConfig {
+	c := (*config.Config)(x).Sub(sub)
+	var result OpConfig
+
+	if s := config.Int(c, "max_waiting_ops"); s > 0 {
+		result.MaxWaitingOps = s
+	} else {
+		result.MaxWaitingOps = NoLimit
+	}
+
+	if s := config.Int(c, "max_running_ops"); s > 0 {
+		result.MaxRunningOps = s
+	} else {
+		result.MaxRunningOps = NoLimit
+	}
+
+	if s := config.DurationSafe(c, "idle_timeout"); s > 0 {
+		result.IdleTimeout = s
+	} else {
+		result.IdleTimeout = DefaultIdleTimeout
+	}
+
+	result.Tags = tags(c)
+
+	return result
+}
+
+type OpConfig struct {
+	// MaxWaitingOps returns the value of "max_waiting_ops" config parameter.
+	//
+	// Equals NoLimit if the value is not a positive number.
+	MaxWaitingOps int64
+	// MaxRunningOps returns the value of "max_running_ops" config parameter.
+	//
+	// Equals NoLimit if the value is not a positive number.
+	MaxRunningOps int64
+	// IdleTimeout returns the value of "idle_timeout" config parameter.
+	//
+	// Equals DefaultIdleTimeout if the value is not a valid duration.
+	IdleTimeout time.Duration
+	// Tags returns the value of "tags" config parameter.
+	//
+	// Equals nil if the value is not a valid tags config slice.
+	Tags []IOTagConfig
+}
+
+type IOTagConfig struct {
+	Tag         string
+	Weight      *float64
+	LimitOps    *float64
+	ReservedOps *float64
+}
+
+func tags(c *config.Config) []IOTagConfig {
+	c = c.Sub("tags")
+	var result []IOTagConfig
+	for i := 0; ; i++ {
+		tag := config.String(c, strconv.Itoa(i)+".tag")
+		if tag == "" {
+			return result
+		}
+
+		var tagConfig IOTagConfig
+		tagConfig.Tag = tag
+
+		v := c.Value(strconv.Itoa(i) + ".weight")
+		if v != nil {
+			w, err := cast.ToFloat64E(v)
+			panicOnErr(err)
+			tagConfig.Weight = &w
+		}
+
+		v = c.Value(strconv.Itoa(i) + ".limit_ops")
+		if v != nil {
+			l, err := cast.ToFloat64E(v)
+			panicOnErr(err)
+			tagConfig.LimitOps = &l
+		}
+
+		v = c.Value(strconv.Itoa(i) + ".reserved_ops")
+		if v != nil {
+			r, err := cast.ToFloat64E(v)
+			panicOnErr(err)
+			tagConfig.ReservedOps = &r
+		}
+
+		result = append(result, tagConfig)
+	}
+}
+
+func panicOnErr(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
--- a/config/example/node.env
+++ b/config/example/node.env
@ -157,6 +157,47 @@ FROSTFS_STORAGE_SHARD_0_GC_REMOVER_SLEEP_INTERVAL=2m
 FROSTFS_STORAGE_SHARD_0_GC_EXPIRED_COLLECTOR_BATCH_SIZE=1500
 #### Limit of concurrent workers collecting expired objects by the garbage collector
 FROSTFS_STORAGE_SHARD_0_GC_EXPIRED_COLLECTOR_WORKER_COUNT=15
+#### Limits config
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_MAX_RUNNING_OPS=10000
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_MAX_WAITING_OPS=1000
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_MAX_RUNNING_OPS=1000
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_MAX_WAITING_OPS=100
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_IDLE_TIMEOUT=45s
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_IDLE_TIMEOUT=30s
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_0_TAG=internal
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_0_WEIGHT=20
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_0_LIMIT_OPS=0
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_0_RESERVED_OPS=1000
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_1_TAG=client
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_1_WEIGHT=70
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_1_RESERVED_OPS=10000
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_2_TAG=background
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_2_WEIGHT=5
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_2_LIMIT_OPS=10000
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_2_RESERVED_OPS=0
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_3_TAG=writecache
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_3_WEIGHT=5
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_3_LIMIT_OPS=25000
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_4_TAG=policer
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_4_WEIGHT=5
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_4_LIMIT_OPS=25000
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_0_TAG=internal
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_0_WEIGHT=200
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_0_LIMIT_OPS=0
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_0_RESERVED_OPS=100
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_1_TAG=client
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_1_WEIGHT=700
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_1_RESERVED_OPS=1000
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_2_TAG=background
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_2_WEIGHT=50
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_2_LIMIT_OPS=1000
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_2_RESERVED_OPS=0
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_3_TAG=writecache
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_3_WEIGHT=50
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_3_LIMIT_OPS=2500
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_4_TAG=policer
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_4_WEIGHT=50
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_4_LIMIT_OPS=2500

 ## 1 shard
 ### Flag to refill Metabase from BlobStor
--- a/config/example/node.json
+++ b/config/example/node.json
@ -221,6 +221,76 @@
          "remover_sleep_interval": "2m",
          "expired_collector_batch_size": 1500,
          "expired_collector_worker_count": 15
+        },
+        "limits": {
+          "read": {
+            "max_running_ops": 10000,
+            "max_waiting_ops": 1000,
+            "idle_timeout": "30s",
+            "tags": [
+              {
+                "tag": "internal",
+                "weight": 20,
+                "limit_ops": 0,
+                "reserved_ops": 1000
+              },
+              {
+                "tag": "client",
+                "weight": 70,
+                "reserved_ops": 10000
+              },
+              {
+                "tag": "background",
+                "weight": 5,
+                "limit_ops": 10000,
+                "reserved_ops": 0
+              },
+              {
+                "tag": "writecache",
+                "weight": 5,
+                "limit_ops": 25000
+              },
+              {
+                "tag": "policer",
+                "weight": 5,
+                "limit_ops": 25000
+              }
+            ]
+          },
+          "write": {
+            "max_running_ops": 1000,
+            "max_waiting_ops": 100,
+            "idle_timeout": "45s",
+            "tags": [
+              {
+                "tag": "internal",
+                "weight": 200,
+                "limit_ops": 0,
+                "reserved_ops": 100
+              },
+              {
+                "tag": "client",
+                "weight": 700,
+                "reserved_ops": 1000
+              },
+              {
+                "tag": "background",
+                "weight": 50,
+                "limit_ops": 1000,
+                "reserved_ops": 0
+              },
+              {
+                "tag": "writecache",
+                "weight": 50,
+                "limit_ops": 2500
+              },
+              {
+                "tag": "policer",
+                "weight": 50,
+                "limit_ops": 2500
+              }
+            ]
+          }
        }
      },
      "1": {
--- a/config/example/node.yaml
+++ b/config/example/node.yaml
@ -227,6 +227,52 @@ storage:
        expired_collector_batch_size: 1500 # number of objects to be marked expired by the garbage collector
        expired_collector_worker_count: 15 # number of concurrent workers collecting expired objects by the garbage collector

+      limits:
+        read:
+          max_running_ops: 10000
+          max_waiting_ops: 1000
+          idle_timeout: 30s
+          tags:
+          - tag: internal
+            weight: 20
+            limit_ops: 0
+            reserved_ops: 1000
+          - tag: client
+            weight: 70
+            reserved_ops: 10000
+          - tag: background
+            weight: 5
+            limit_ops: 10000
+            reserved_ops: 0
+          - tag: writecache
+            weight: 5
+            limit_ops: 25000
+          - tag: policer
+            weight: 5
+            limit_ops: 25000
+        write:
+          max_running_ops: 1000
+          max_waiting_ops: 100
+          idle_timeout: 45s
+          tags:
+          - tag: internal
+            weight: 200
+            limit_ops: 0
+            reserved_ops: 100
+          - tag: client
+            weight: 700
+            reserved_ops: 1000
+          - tag: background
+            weight: 50
+            limit_ops: 1000
+            reserved_ops: 0
+          - tag: writecache
+            weight: 50
+            limit_ops: 2500
+          - tag: policer
+            weight: 50
+            limit_ops: 2500
+
    1:
      writecache:
        path: tmp/1/cache  # write-cache root directory
--- a/docs/storage-node-configuration.md
+++ b/docs/storage-node-configuration.md
@ -195,6 +195,7 @@ The following table describes configuration for each shard.
 | `blobstor`                                       | [Blobstor config](#blobstor-subsection)     |               | Blobstor configuration.                                                                                                                                                                                           |
 | `small_object_size`                              | `size`                                      | `1M`          | Maximum size of an object stored in blobovnicza tree.                                                                                                                                                             |
 | `gc`                                             | [GC config](#gc-subsection)                 |               | GC configuration.                                                                                                                                                                                                 |
+| `limits`                                         | [Shard limits config](#limits-subsection)   |               | Shard limits configuration.                                                                                                                                                                                                 |

 ### `blobstor` subsection

@ -301,6 +302,64 @@ writecache:
 | `flush_worker_count`        | `int`      | `20`          | Amount of background workers that move data from the writecache to the blobstor.                                              |
 | `max_flushing_objects_size` | `size`     | `512M`        | Max total size of background flushing objects.                                                                                |

+### `limits` subsection
+
+```yaml
+limits:
+  max_read_running_ops: 10000
+  max_read_waiting_ops: 1000
+  max_write_running_ops: 1000
+  max_write_waiting_ops: 100
+  read:
+    - tag: internal
+      weight: 20
+      limit_ops: 0
+      reserved_ops: 1000
+    - tag: client
+      weight: 70
+      reserved_ops: 10000
+    - tag: background
+      weight: 5
+      limit_ops: 10000
+      reserved_ops: 0
+    - tag: writecache
+      weight: 5
+      limit_ops: 25000
+    - tag: policer
+      weight: 5
+      limit_ops: 25000
+    write:
+    - tag: internal
+      weight: 200
+      limit_ops: 0
+      reserved_ops: 100
+    - tag: client
+      weight: 700
+      reserved_ops: 1000
+    - tag: background
+      weight: 50
+      limit_ops: 1000
+      reserved_ops: 0
+    - tag: writecache
+      weight: 50
+      limit_ops: 2500
+    - tag: policer
+      weight: 50
+      limit_ops: 2500
+```
+
+| Parameter               | Type     | Default value  | Description                                                                                                     |
+| ----------------------- | -------- | -------------- | --------------------------------------------------------------------------------------------------------------- |
+| `max_read_running_ops`  | `int`    | 0 (no limit)   | The maximum number of runnig read operations.                                                                   |
+| `max_read_waiting_ops`  | `int`    | 0 (no limit)   | The maximum number of waiting read operations.                                                                  |
+| `max_write_running_ops` | `int`    | 0 (no limit)   | The maximum number of running write operations.                                                                 |
+| `max_write_waiting_ops` | `int`    | 0 (no limit)   | The maximum number of running write operations.                                                                 |
+| `read`                  | `[]tag`  | empty          | Array of shard read settings for tags.                                                                          |
+| `write`                 | `[]tag`  | empty          | Array of shard write settings for tags.                                                                         |
+| `tag.tag`               | `string` | empty          | Tag name. Allowed values: `client`, `internal`, `background`, `writecache`, `policer`.                          |
+| `tag.weight`            | `float`  | 0 (no weight)  | Weight for queries with the specified tag. Weights must be specified for all tags or not specified for any one. |
+| `tag.limit_ops`         | `float`  | 0 (no limit)   | Operations per second rate limit for queries with the specified tag.                                            |
+| `tag.reserved_ops`      | `float`  | 0 (no reserve) | Reserved operations per second rate for queries with the specified tag.                                         |

 # `node` section

--- a/go.mod
+++ b/go.mod
@ -8,7 +8,7 @@ require (
 	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0
 	git.frostfs.info/TrueCloudLab/frostfs-locode-db v0.4.1-0.20240710074952-65761deb5c0d
 	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20250212111929-d34e1329c824
-	git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250213125059-356851eed3bf
+	git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250227072915-25102d1e1aa3
 	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20250217152255-c3f7378887a4
 	git.frostfs.info/TrueCloudLab/hrw v1.2.1
 	git.frostfs.info/TrueCloudLab/multinet v0.0.0-20241015075604-6cb0d80e0972
--- a/go.sum
+++ b/go.sum
@ -8,8 +8,8 @@ git.frostfs.info/TrueCloudLab/frostfs-locode-db v0.4.1-0.20240710074952-65761deb
 git.frostfs.info/TrueCloudLab/frostfs-locode-db v0.4.1-0.20240710074952-65761deb5c0d/go.mod h1:7ZZq8iguY7qFsXajdHGmZd2AW4QbucyrJwhbsRfOfek=
 git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20250212111929-d34e1329c824 h1:Mxw1c/8t96vFIUOffl28lFaHKi413oCBfLMGJmF9cFA=
 git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20250212111929-d34e1329c824/go.mod h1:kbwB4v2o6RyOfCo9kEFeUDZIX3LKhmS0yXPrtvzkQ1g=
-git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250213125059-356851eed3bf h1:ik2aMBpTJJpoZe2ffcGShXRkrvny65NEPLVt67KmH/A=
-git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250213125059-356851eed3bf/go.mod h1:PCijYq4oa8vKtIEcUX6jRiszI6XAW+nBwU+T1kB4d1U=
+git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250227072915-25102d1e1aa3 h1:QnAt5b2R6+hQthMOIn5ECfLAlVD8IAE5JRm1NCCOmuE=
+git.frostfs.info/TrueCloudLab/frostfs-qos v0.0.0-20250227072915-25102d1e1aa3/go.mod h1:PCijYq4oa8vKtIEcUX6jRiszI6XAW+nBwU+T1kB4d1U=
 git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20250217152255-c3f7378887a4 h1:dOZHuOywvH1ms8U38lDCWpysgkCCeJ02RLI7zDhPcyw=
 git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20250217152255-c3f7378887a4/go.mod h1:aQpPWfG8oyfJ2X+FenPTJpSRWZjwcP5/RAtkW+/VEX8=
 git.frostfs.info/TrueCloudLab/hrw v1.2.1 h1:ccBRK21rFvY5R1WotI6LNoPlizk7qSvdfD8lNIRudVc=
--- a/internal/assert/cond.go
+++ b/internal/assert/cond.go
@ -0,0 +1,9 @@
+package assert
+
+import "strings"
+
+func True(cond bool, details ...string) {
+	if !cond {
+		panic(strings.Join(details, " "))
+	}
+}
--- a/internal/qos/limiter.go
+++ b/internal/qos/limiter.go
@ -0,0 +1,146 @@
+package qos
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/limits"
+	"git.frostfs.info/TrueCloudLab/frostfs-qos/scheduling"
+	"git.frostfs.info/TrueCloudLab/frostfs-qos/tagging"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+)
+
+const (
+	defaultIdleTimeout time.Duration = 0
+	defaultShare       float64       = 1.0
+)
+
+type ReleaseFunc scheduling.ReleaseFunc
+
+type Limiter interface {
+	ReadRequest(context.Context) (ReleaseFunc, error)
+	WriteRequest(context.Context) (ReleaseFunc, error)
+	Close()
+}
+
+type scheduler interface {
+	RequestArrival(ctx context.Context, tag string) (scheduling.ReleaseFunc, error)
+	Close()
+}
+
+func NewLimiter(c *limits.Config) (Limiter, error) {
+	if err := validateConfig(c); err != nil {
+		return nil, err
+	}
+	read, write := c.Read(), c.Write()
+	if isNoop(read, write) {
+		return noopLimiterInstance, nil
+	}
+	readScheduler, err := createScheduler(c.Read())
+	if err != nil {
+		return nil, fmt.Errorf("create read scheduler: %w", err)
+	}
+	writeScheduler, err := createScheduler(c.Write())
+	if err != nil {
+		return nil, fmt.Errorf("create write scheduler: %w", err)
+	}
+	return &mClockLimiter{
+		readScheduler:  readScheduler,
+		writeScheduler: writeScheduler,
+	}, nil
+}
+
+func createScheduler(config limits.OpConfig) (scheduler, error) {
+	if len(config.Tags) == 0 && config.MaxWaitingOps == limits.NoLimit {
+		return newSemaphoreScheduler(config.MaxRunningOps), nil
+	}
+	return scheduling.NewMClock(
+		uint64(config.MaxRunningOps), uint64(config.MaxWaitingOps),
+		converToSchedulingTags(config.Tags), config.IdleTimeout)
+}
+
+func converToSchedulingTags(limits []limits.IOTagConfig) map[string]scheduling.TagInfo {
+	result := make(map[string]scheduling.TagInfo)
+	for _, tag := range []IOTag{IOTagClient, IOTagBackground, IOTagInternal, IOTagPolicer, IOTagWritecache} {
+		result[tag.String()] = scheduling.TagInfo{
+			Share: defaultShare,
+		}
+	}
+	for _, l := range limits {
+		v := result[l.Tag]
+		if l.Weight != nil && *l.Weight != 0 {
+			v.Share = *l.Weight
+		}
+		if l.LimitOps != nil && *l.LimitOps != 0 {
+			v.LimitIOPS = l.LimitOps
+		}
+		if l.ReservedOps != nil && *l.ReservedOps != 0 {
+			v.ReservedIOPS = l.ReservedOps
+		}
+		result[l.Tag] = v
+	}
+	return result
+}
+
+var (
+	_                   Limiter     = (*noopLimiter)(nil)
+	releaseStub         ReleaseFunc = func() {}
+	noopLimiterInstance             = &noopLimiter{}
+)
+
+func NewNoopLimiter() Limiter {
+	return &noopLimiter{}
+}
+
+type noopLimiter struct{}
+
+func (n *noopLimiter) ReadRequest(context.Context) (ReleaseFunc, error) {
+	return releaseStub, nil
+}
+
+func (n *noopLimiter) WriteRequest(context.Context) (ReleaseFunc, error) {
+	return releaseStub, nil
+}
+
+func (n *noopLimiter) Close() {}
+
+var _ Limiter = (*mClockLimiter)(nil)
+
+type mClockLimiter struct {
+	readScheduler  scheduler
+	writeScheduler scheduler
+}
+
+func (n *mClockLimiter) ReadRequest(ctx context.Context) (ReleaseFunc, error) {
+	return requestArrival(ctx, n.readScheduler)
+}
+
+func (n *mClockLimiter) WriteRequest(ctx context.Context) (ReleaseFunc, error) {
+	return requestArrival(ctx, n.writeScheduler)
+}
+
+func requestArrival(ctx context.Context, s scheduler) (ReleaseFunc, error) {
+	tag, ok := tagging.IOTagFromContext(ctx)
+	if !ok {
+		tag = IOTagClient.String()
+	}
+	if tag == IOTagCritical.String() {
+		return releaseStub, nil
+	}
+	rel, err := s.RequestArrival(ctx, tag)
+	if err != nil {
+		if errors.Is(err, scheduling.ErrMClockSchedulerRequestLimitExceeded) ||
+			errors.Is(err, errSemaphoreLimitExceeded) {
+			return nil, &apistatus.ResourceExhausted{}
+		}
+		return nil, err
+	}
+	return ReleaseFunc(rel), nil
+}
+
+func (n *mClockLimiter) Close() {
+	n.readScheduler.Close()
+	n.writeScheduler.Close()
+}
--- a/internal/qos/semaphore.go
+++ b/internal/qos/semaphore.go
@ -0,0 +1,39 @@
+package qos
+
+import (
+	"context"
+	"errors"
+
+	qosSemaphore "git.frostfs.info/TrueCloudLab/frostfs-qos/limiting/semaphore"
+	"git.frostfs.info/TrueCloudLab/frostfs-qos/scheduling"
+)
+
+var (
+	_                         scheduler = (*semaphore)(nil)
+	errSemaphoreLimitExceeded           = errors.New("semaphore limit exceeded")
+)
+
+type semaphore struct {
+	s *qosSemaphore.Semaphore
+}
+
+func newSemaphoreScheduler(size int64) *semaphore {
+	return &semaphore{
+		s: qosSemaphore.NewSemaphore(size),
+	}
+}
+
+func (s *semaphore) Close() {}
+
+func (s *semaphore) RequestArrival(ctx context.Context, _ string) (scheduling.ReleaseFunc, error) {
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	default:
+	}
+
+	if s.s.Acquire() {
+		return s.s.Release, nil
+	}
+	return nil, errSemaphoreLimitExceeded
+}
--- a/internal/qos/validate.go
+++ b/internal/qos/validate.go
@ -0,0 +1,101 @@
+package qos
+
+import (
+	"errors"
+	"fmt"
+	"math"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/limits"
+)
+
+var errWeightsMustBeSpecified = errors.New("invalid weights: weights must be specified for all tags or not specified for any")
+
+type tagConfig struct {
+	Shares, Limit, Reserved *float64
+}
+
+func validateConfig(c *limits.Config) error {
+	if err := validateOpConfig(c.Read()); err != nil {
+		return fmt.Errorf("limits 'read' section validation error: %w", err)
+	}
+	if err := validateOpConfig(c.Write()); err != nil {
+		return fmt.Errorf("limits 'write' section validation error: %w", err)
+	}
+	return nil
+}
+
+func validateOpConfig(c limits.OpConfig) error {
+	if c.MaxRunningOps <= 0 {
+		return fmt.Errorf("invalid 'max_running_ops = %d': must be greater than zero", c.MaxRunningOps)
+	}
+	if c.MaxWaitingOps <= 0 {
+		return fmt.Errorf("invalid 'max_waiting_ops = %d': must be greater than zero", c.MaxWaitingOps)
+	}
+	if c.IdleTimeout <= 0 {
+		return fmt.Errorf("invalid 'idle_timeout = %s': must be greater than zero", c.IdleTimeout.String())
+	}
+	if err := validateTags(c.Tags); err != nil {
+		return fmt.Errorf("'tags' config section validation error: %w", err)
+	}
+	return nil
+}
+
+func validateTags(configTags []limits.IOTagConfig) error {
+	tags := map[IOTag]tagConfig{
+		IOTagClient:     {},
+		IOTagInternal:   {},
+		IOTagBackground: {},
+		IOTagWritecache: {},
+		IOTagPolicer:    {},
+	}
+	for _, t := range configTags {
+		tag, err := FromRawString(t.Tag)
+		if err != nil {
+			return fmt.Errorf("invalid tag %s: %w", t.Tag, err)
+		}
+		if _, ok := tags[tag]; !ok {
+			return fmt.Errorf("tag %s is not configurable", t.Tag)
+		}
+		tags[tag] = tagConfig{
+			Shares:   t.Weight,
+			Limit:    t.LimitOps,
+			Reserved: t.ReservedOps,
+		}
+	}
+	idx := 0
+	var shares float64
+	for t, v := range tags {
+		if idx == 0 {
+			idx++
+			shares = float64Value(v.Shares)
+		} else if (shares != 0 && float64Value(v.Shares) == 0) || (shares == 0 && float64Value(v.Shares) != 0) {
+			return errWeightsMustBeSpecified
+		}
+		if float64Value(v.Shares) < 0 || math.IsNaN(float64Value(v.Shares)) {
+			return fmt.Errorf("invalid weight for tag %s: must be positive value", t.String())
+		}
+		if float64Value(v.Limit) < 0 || math.IsNaN(float64Value(v.Limit)) {
+			return fmt.Errorf("invalid limit_ops for tag %s: must be positive value", t.String())
+		}
+		if float64Value(v.Reserved) < 0 || math.IsNaN(float64Value(v.Reserved)) {
+			return fmt.Errorf("invalid reserved_ops for tag %s: must be positive value", t.String())
+		}
+	}
+	return nil
+}
+
+func float64Value(f *float64) float64 {
+	if f == nil {
+		return 0.0
+	}
+	return *f
+}
+
+func isNoop(read, write limits.OpConfig) bool {
+	return read.MaxRunningOps == limits.NoLimit &&
+		read.MaxWaitingOps == limits.NoLimit &&
+		write.MaxRunningOps == limits.NoLimit &&
+		write.MaxWaitingOps == limits.NoLimit &&
+		len(read.Tags) == 0 &&
+		len(write.Tags) == 0
+}
--- a/pkg/local_object_storage/blobstor/blobovniczatree/rebuild.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/rebuild.go
@ -50,7 +50,7 @@ func (b *Blobovniczas) Rebuild(ctx context.Context, prm common.RebuildPrm) (comm
 	var res common.RebuildRes

 	b.log.Debug(ctx, logs.BlobovniczaTreeCompletingPreviousRebuild)
-	completedPreviosMoves, err := b.completeIncompletedMove(ctx, prm.MetaStorage)
+	completedPreviosMoves, err := b.completeIncompletedMove(ctx, prm.MetaStorage, prm.Limiter)
 	res.ObjectsMoved += completedPreviosMoves
 	if err != nil {
 		b.log.Warn(ctx, logs.BlobovniczaTreeCompletedPreviousRebuildFailed, zap.Error(err))
@ -79,7 +79,7 @@ func (b *Blobovniczas) migrateDBs(ctx context.Context, dbs []string, prm common.
 	var completedDBCount uint32
 	for _, db := range dbs {
 		b.log.Debug(ctx, logs.BlobovniczaTreeRebuildingBlobovnicza, zap.String("path", db))
-		movedObjects, err := b.rebuildDB(ctx, db, prm.MetaStorage, prm.WorkerLimiter)
+		movedObjects, err := b.rebuildDB(ctx, db, prm.MetaStorage, prm.Limiter)
 		res.ObjectsMoved += movedObjects
 		if err != nil {
 			b.log.Warn(ctx, logs.BlobovniczaTreeRebuildingBlobovniczaFailed, zap.String("path", db), zap.Uint64("moved_objects_count", movedObjects), zap.Error(err))
@ -195,7 +195,7 @@ func (b *Blobovniczas) rebuildBySize(ctx context.Context, path string, targetFil
 	return fp < targetFillPercent || fp > 100+(100-targetFillPercent), nil
 }

-func (b *Blobovniczas) rebuildDB(ctx context.Context, path string, meta common.MetaStorage, limiter common.ConcurrentWorkersLimiter) (uint64, error) {
+func (b *Blobovniczas) rebuildDB(ctx context.Context, path string, meta common.MetaStorage, concLimiter common.RebuildLimiter) (uint64, error) {
 	shDB := b.getBlobovnicza(ctx, path)
 	blz, err := shDB.Open(ctx)
 	if err != nil {
@ -212,7 +212,7 @@ func (b *Blobovniczas) rebuildDB(ctx context.Context, path string, meta common.M
 	if err != nil {
 		return 0, err
 	}
-	migratedObjects, err := b.moveObjects(ctx, blz, shDB.SystemPath(), meta, limiter)
+	migratedObjects, err := b.moveObjects(ctx, blz, shDB.SystemPath(), meta, concLimiter)
 	if err != nil {
 		return migratedObjects, err
 	}
@ -238,7 +238,7 @@ func (b *Blobovniczas) addRebuildTempFile(ctx context.Context, path string) (fun
 	}, nil
 }

-func (b *Blobovniczas) moveObjects(ctx context.Context, blz *blobovnicza.Blobovnicza, blzPath string, meta common.MetaStorage, limiter common.ConcurrentWorkersLimiter) (uint64, error) {
+func (b *Blobovniczas) moveObjects(ctx context.Context, blz *blobovnicza.Blobovnicza, blzPath string, meta common.MetaStorage, limiter common.RebuildLimiter) (uint64, error) {
 	var result atomic.Uint64
 	batch := make(map[oid.Address][]byte)

@ -253,7 +253,12 @@ func (b *Blobovniczas) moveObjects(ctx context.Context, blz *blobovnicza.Blobovn
 	})

 	for {
-		_, err := blz.Iterate(ctx, prm)
+		release, err := limiter.ReadRequest(ctx)
+		if err != nil {
+			return result.Load(), err
+		}
+		_, err = blz.Iterate(ctx, prm)
+		release()
 		if err != nil && !errors.Is(err, errBatchFull) {
 			return result.Load(), err
 		}
@ -265,13 +270,19 @@ func (b *Blobovniczas) moveObjects(ctx context.Context, blz *blobovnicza.Blobovn
 		eg, egCtx := errgroup.WithContext(ctx)

 		for addr, data := range batch {
-			if err := limiter.AcquireWorkSlot(egCtx); err != nil {
+			release, err := limiter.AcquireWorkSlot(egCtx)
+			if err != nil {
 				_ = eg.Wait()
 				return result.Load(), err
 			}
 			eg.Go(func() error {
-				defer limiter.ReleaseWorkSlot()
-				err := b.moveObject(egCtx, blz, blzPath, addr, data, meta)
+				defer release()
+				moveRelease, err := limiter.WriteRequest(ctx)
+				if err != nil {
+					return err
+				}
+				err = b.moveObject(egCtx, blz, blzPath, addr, data, meta)
+				moveRelease()
 				if err == nil {
 					result.Add(1)
 				}
@ -359,7 +370,7 @@ func (b *Blobovniczas) dropDirectoryIfEmpty(path string) error {
 	return b.dropDirectoryIfEmpty(filepath.Dir(path))
 }

-func (b *Blobovniczas) completeIncompletedMove(ctx context.Context, metaStore common.MetaStorage) (uint64, error) {
+func (b *Blobovniczas) completeIncompletedMove(ctx context.Context, metaStore common.MetaStorage, rateLimiter common.RateLimiter) (uint64, error) {
 	var count uint64
 	var rebuildTempFilesToRemove []string
 	err := b.iterateIncompletedRebuildDBPaths(ctx, func(s string) (bool, error) {
@ -372,13 +383,24 @@ func (b *Blobovniczas) completeIncompletedMove(ctx context.Context, metaStore co
 		}
 		defer shDB.Close(ctx)

+		release, err := rateLimiter.ReadRequest(ctx)
+		if err != nil {
+			return false, err
+		}
 		incompletedMoves, err := blz.ListMoveInfo(ctx)
+		release()
 		if err != nil {
 			return true, err
 		}

 		for _, move := range incompletedMoves {
-			if err := b.performMove(ctx, blz, shDB.SystemPath(), move, metaStore); err != nil {
+			release, err := rateLimiter.WriteRequest(ctx)
+			if err != nil {
+				return false, err
+			}
+			err = b.performMove(ctx, blz, shDB.SystemPath(), move, metaStore)
+			release()
+			if err != nil {
 				return true, err
 			}
 			count++
@ -388,9 +410,14 @@ func (b *Blobovniczas) completeIncompletedMove(ctx context.Context, metaStore co
 		return false, nil
 	})
 	for _, tmp := range rebuildTempFilesToRemove {
+		release, err := rateLimiter.WriteRequest(ctx)
+		if err != nil {
+			return count, err
+		}
 		if err := os.Remove(filepath.Join(b.rootPath, tmp)); err != nil {
 			b.log.Warn(ctx, logs.BlobovniczatreeFailedToRemoveRebuildTempFile, zap.Error(err))
 		}
+		release()
 	}
 	return count, err
 }
--- a/pkg/local_object_storage/blobstor/blobovniczatree/rebuild_failover_test.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/rebuild_failover_test.go
@ -161,16 +161,18 @@ func testRebuildFailoverValidate(t *testing.T, dir string, obj *objectSDK.Object
 		storageIDs: make(map[oid.Address][]byte),
 		guard:      &sync.Mutex{},
 	}
+	limiter := &rebuildLimiterStub{}
 	rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
-		MetaStorage:   metaStub,
-		WorkerLimiter: &rebuildLimiterStub{},
-		FillPercent:   1,
+		MetaStorage: metaStub,
+		Limiter:     limiter,
+		FillPercent: 1,
 	})
 	require.NoError(t, err)
 	require.Equal(t, uint64(1), rRes.ObjectsMoved)
 	require.Equal(t, uint64(0), rRes.FilesRemoved)

 	require.NoError(t, b.Close(context.Background()))
+	require.NoError(t, limiter.ValidateReleased())

 	blz := blobovnicza.New(blobovnicza.WithPath(filepath.Join(dir, "0", "0", "1.db")))
 	require.NoError(t, blz.Open(context.Background()))
--- a/pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go
@ -2,7 +2,9 @@ package blobovniczatree

 import (
 	"context"
+	"fmt"
 	"sync"
+	"sync/atomic"
 	"testing"

 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
@ -76,10 +78,11 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 			storageIDs: storageIDs,
 			guard:      &sync.Mutex{},
 		}
+		limiter := &rebuildLimiterStub{}
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
-			MetaStorage:   metaStub,
-			WorkerLimiter: &rebuildLimiterStub{},
-			FillPercent:   60,
+			MetaStorage: metaStub,
+			Limiter:     limiter,
+			FillPercent: 60,
 		})
 		require.NoError(t, err)
 		dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0
@ -94,6 +97,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		}

 		require.NoError(t, b.Close(context.Background()))
+		require.NoError(t, limiter.ValidateReleased())
 	})

 	t.Run("no rebuild single db", func(t *testing.T) {
@ -128,10 +132,11 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 			storageIDs: storageIDs,
 			guard:      &sync.Mutex{},
 		}
+		limiter := &rebuildLimiterStub{}
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
-			MetaStorage:   metaStub,
-			WorkerLimiter: &rebuildLimiterStub{},
-			FillPercent:   90, // 64KB / 100KB = 64%
+			MetaStorage: metaStub,
+			Limiter:     limiter,
+			FillPercent: 90, // 64KB / 100KB = 64%
 		})
 		require.NoError(t, err)
 		dataMigrated := rRes.ObjectsMoved > 0 || rRes.FilesRemoved > 0 || metaStub.updatedCount > 0
@ -146,6 +151,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		}

 		require.NoError(t, b.Close(context.Background()))
+		require.NoError(t, limiter.ValidateReleased())
 	})

 	t.Run("rebuild by fill percent", func(t *testing.T) {
@ -193,10 +199,11 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 			storageIDs: storageIDs,
 			guard:      &sync.Mutex{},
 		}
+		limiter := &rebuildLimiterStub{}
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
-			MetaStorage:   metaStub,
-			WorkerLimiter: &rebuildLimiterStub{},
-			FillPercent:   80,
+			MetaStorage: metaStub,
+			Limiter:     limiter,
+			FillPercent: 80,
 		})
 		require.NoError(t, err)
 		require.Equal(t, uint64(49), rRes.FilesRemoved)
@ -215,6 +222,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		}

 		require.NoError(t, b.Close(context.Background()))
+		require.NoError(t, limiter.ValidateReleased())
 	})

 	t.Run("rebuild by overflow", func(t *testing.T) {
@ -266,10 +274,11 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		require.NoError(t, b.Open(mode.ComponentReadWrite))
 		require.NoError(t, b.Init())

+		limiter := &rebuildLimiterStub{}
 		rRes, err := b.Rebuild(context.Background(), common.RebuildPrm{
-			MetaStorage:   metaStub,
-			WorkerLimiter: &rebuildLimiterStub{},
-			FillPercent:   80,
+			MetaStorage: metaStub,
+			Limiter:     limiter,
+			FillPercent: 80,
 		})
 		require.NoError(t, err)
 		require.Equal(t, uint64(49), rRes.FilesRemoved)
@ -285,6 +294,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		}

 		require.NoError(t, b.Close(context.Background()))
+		require.NoError(t, limiter.ValidateReleased())
 	})
 }

@ -338,9 +348,10 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 		storageIDs: storageIDs,
 		guard:      &sync.Mutex{},
 	}
+	limiter := &rebuildLimiterStub{}
 	var rPrm common.RebuildPrm
 	rPrm.MetaStorage = metaStub
-	rPrm.WorkerLimiter = &rebuildLimiterStub{}
+	rPrm.Limiter = limiter
 	rPrm.FillPercent = 1
 	rRes, err := b.Rebuild(context.Background(), rPrm)
 	require.NoError(t, err)
@ -356,6 +367,7 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 	}

 	require.NoError(t, b.Close(context.Background()))
+	require.NoError(t, limiter.ValidateReleased())
 }

 func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, targetDepth, targetWidth uint64, shouldMigrate bool) {
@ -427,9 +439,10 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 		storageIDs: storageIDs,
 		guard:      &sync.Mutex{},
 	}
+	limiter := &rebuildLimiterStub{}
 	var rPrm common.RebuildPrm
 	rPrm.MetaStorage = metaStub
-	rPrm.WorkerLimiter = &rebuildLimiterStub{}
+	rPrm.Limiter = limiter
 	rPrm.FillPercent = 1
 	rRes, err := b.Rebuild(context.Background(), rPrm)
 	require.NoError(t, err)
@ -445,6 +458,7 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 	}

 	require.NoError(t, b.Close(context.Background()))
+	require.NoError(t, limiter.ValidateReleased())
 }

 type storageIDUpdateStub struct {
@ -462,7 +476,36 @@ func (s *storageIDUpdateStub) UpdateStorageID(ctx context.Context, addr oid.Addr
 	return nil
 }

-type rebuildLimiterStub struct{}
+type rebuildLimiterStub struct {
+	slots         atomic.Int64
+	readRequests  atomic.Int64
+	writeRequests atomic.Int64
+}

-func (s *rebuildLimiterStub) AcquireWorkSlot(context.Context) error { return nil }
-func (s *rebuildLimiterStub) ReleaseWorkSlot()                      {}
+func (s *rebuildLimiterStub) AcquireWorkSlot(context.Context) (common.ReleaseFunc, error) {
+	s.slots.Add(1)
+	return func() { s.slots.Add(-1) }, nil
+}
+
+func (s *rebuildLimiterStub) ReadRequest(context.Context) (common.ReleaseFunc, error) {
+	s.readRequests.Add(1)
+	return func() { s.readRequests.Add(-1) }, nil
+}
+
+func (s *rebuildLimiterStub) WriteRequest(context.Context) (common.ReleaseFunc, error) {
+	s.writeRequests.Add(1)
+	return func() { s.writeRequests.Add(-1) }, nil
+}
+
+func (s *rebuildLimiterStub) ValidateReleased() error {
+	if v := s.slots.Load(); v != 0 {
+		return fmt.Errorf("invalid slots value %d", v)
+	}
+	if v := s.readRequests.Load(); v != 0 {
+		return fmt.Errorf("invalid read requests value %d", v)
+	}
+	if v := s.writeRequests.Load(); v != 0 {
+		return fmt.Errorf("invalid write requests value %d", v)
+	}
+	return nil
+}
--- a/pkg/local_object_storage/blobstor/common/rebuild.go
+++ b/pkg/local_object_storage/blobstor/common/rebuild.go
@ -12,16 +12,27 @@ type RebuildRes struct {
 }

 type RebuildPrm struct {
-	MetaStorage   MetaStorage
-	WorkerLimiter ConcurrentWorkersLimiter
-	FillPercent   int
+	MetaStorage MetaStorage
+	Limiter     RebuildLimiter
+	FillPercent int
 }

 type MetaStorage interface {
 	UpdateStorageID(ctx context.Context, addr oid.Address, storageID []byte) error
 }

-type ConcurrentWorkersLimiter interface {
-	AcquireWorkSlot(ctx context.Context) error
-	ReleaseWorkSlot()
+type ReleaseFunc func()
+
+type ConcurrencyLimiter interface {
+	AcquireWorkSlot(ctx context.Context) (ReleaseFunc, error)
+}
+
+type RateLimiter interface {
+	ReadRequest(context.Context) (ReleaseFunc, error)
+	WriteRequest(context.Context) (ReleaseFunc, error)
+}
+
+type RebuildLimiter interface {
+	ConcurrencyLimiter
+	RateLimiter
 }
--- a/pkg/local_object_storage/blobstor/rebuild.go
+++ b/pkg/local_object_storage/blobstor/rebuild.go
@ -13,19 +13,14 @@ type StorageIDUpdate interface {
 	UpdateStorageID(ctx context.Context, addr oid.Address, storageID []byte) error
 }

-type ConcurrentWorkersLimiter interface {
-	AcquireWorkSlot(ctx context.Context) error
-	ReleaseWorkSlot()
-}
-
-func (b *BlobStor) Rebuild(ctx context.Context, upd StorageIDUpdate, limiter ConcurrentWorkersLimiter, fillPercent int) error {
+func (b *BlobStor) Rebuild(ctx context.Context, upd StorageIDUpdate, concLimiter common.RebuildLimiter, 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,
-			FillPercent:   fillPercent,
+			MetaStorage: upd,
+			Limiter:     concLimiter,
+			FillPercent: fillPercent,
 		})
 		summary.FilesRemoved += res.FilesRemoved
 		summary.ObjectsMoved += res.ObjectsMoved
--- a/pkg/local_object_storage/engine/container.go
+++ b/pkg/local_object_storage/engine/container.go
@ -74,7 +74,7 @@ func (e *StorageEngine) containerSize(ctx context.Context, prm ContainerSizePrm)
 		var csPrm shard.ContainerSizePrm
 		csPrm.SetContainerID(prm.cnr)

-		csRes, err := sh.Shard.ContainerSize(csPrm)
+		csRes, err := sh.Shard.ContainerSize(ctx, csPrm)
 		if err != nil {
 			e.reportShardError(ctx, sh, "can't get container size", err,
 				zap.Stringer("container_id", prm.cnr))
--- a/pkg/local_object_storage/engine/engine.go
+++ b/pkg/local_object_storage/engine/engine.go
@ -14,6 +14,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"go.uber.org/zap"
 )
@ -176,7 +177,10 @@ func (e *StorageEngine) reportShardError(
 }

 func isLogical(err error) bool {
-	return errors.As(err, &logicerr.Logical{}) || errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded)
+	return errors.As(err, &logicerr.Logical{}) ||
+		errors.Is(err, context.Canceled) ||
+		errors.Is(err, context.DeadlineExceeded) ||
+		errors.As(err, new(*apistatus.ResourceExhausted))
 }

 // Option represents StorageEngine's constructor option.
--- a/pkg/local_object_storage/engine/engine_test.go
+++ b/pkg/local_object_storage/engine/engine_test.go
@ -3,8 +3,10 @@ package engine
 import (
 	"context"
 	"path/filepath"
+	"sync/atomic"
 	"testing"

+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"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/fstree"
@ -90,6 +92,7 @@ func testGetDefaultShardOptions(t testing.TB) []shard.Option {
 		),
 		shard.WithPiloramaOptions(pilorama.WithPath(filepath.Join(t.TempDir(), "pilorama"))),
 		shard.WithMetaBaseOptions(testGetDefaultMetabaseOptions(t)...),
+		shard.WithLimiter(&testQoSLimiter{t: t}),
 	}
 }

@ -151,3 +154,26 @@ func newTestStorages(root string, smallSize uint64) ([]blobstor.SubStorage, *tes
 		},
 	}, smallFileStorage, largeFileStorage
 }
+
+var _ qos.Limiter = (*testQoSLimiter)(nil)
+
+type testQoSLimiter struct {
+	t     testing.TB
+	read  atomic.Int64
+	write atomic.Int64
+}
+
+func (t *testQoSLimiter) Close() {
+	require.Equal(t.t, int64(0), t.read.Load(), "read requests count after limiter close must be 0")
+	require.Equal(t.t, int64(0), t.write.Load(), "write requests count after limiter close must be 0")
+}
+
+func (t *testQoSLimiter) ReadRequest(context.Context) (qos.ReleaseFunc, error) {
+	t.read.Add(1)
+	return func() { t.read.Add(-1) }, nil
+}
+
+func (t *testQoSLimiter) WriteRequest(context.Context) (qos.ReleaseFunc, error) {
+	t.write.Add(1)
+	return func() { t.write.Add(-1) }, nil
+}
--- a/pkg/local_object_storage/engine/inhume.go
+++ b/pkg/local_object_storage/engine/inhume.go
@ -339,7 +339,7 @@ func (e *StorageEngine) processZeroSizeContainers(ctx context.Context, ids []cid
 		var drop []cid.ID
 		for id := range idMap {
 			prm.SetContainerID(id)
-			s, err := sh.ContainerSize(prm)
+			s, err := sh.ContainerSize(ctx, prm)
 			if err != nil {
 				e.log.Warn(ctx, logs.EngineFailedToGetContainerSize, zap.Stringer("container_id", id), zap.Error(err))
 				failed = true
--- a/pkg/local_object_storage/engine/rebuild.go
+++ b/pkg/local_object_storage/engine/rebuild.go
@ -4,6 +4,7 @@ import (
 	"context"
 	"sync"

+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	"go.opentelemetry.io/otel/attribute"
@ -41,7 +42,7 @@ func (e *StorageEngine) Rebuild(ctx context.Context, prm RebuildPrm) (RebuildRes
 	}
 	resGuard := &sync.Mutex{}

-	limiter := shard.NewRebuildLimiter(prm.ConcurrencyLimit)
+	concLimiter := &concurrencyLimiter{semaphore: make(chan struct{}, prm.ConcurrencyLimit)}

 	eg, egCtx := errgroup.WithContext(ctx)
 	for _, shardID := range prm.ShardIDs {
@ -61,7 +62,7 @@ func (e *StorageEngine) Rebuild(ctx context.Context, prm RebuildPrm) (RebuildRes
 			}

 			err := sh.ScheduleRebuild(egCtx, shard.RebuildPrm{
-				ConcurrencyLimiter: limiter,
+				ConcurrencyLimiter: concLimiter,
 				TargetFillPercent:  prm.TargetFillPercent,
 			})

@ -88,3 +89,20 @@ func (e *StorageEngine) Rebuild(ctx context.Context, prm RebuildPrm) (RebuildRes
 	}
 	return res, nil
 }
+
+type concurrencyLimiter struct {
+	semaphore chan struct{}
+}
+
+func (l *concurrencyLimiter) AcquireWorkSlot(ctx context.Context) (common.ReleaseFunc, error) {
+	select {
+	case l.semaphore <- struct{}{}:
+		return l.releaseWorkSlot, nil
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	}
+}
+
+func (l *concurrencyLimiter) releaseWorkSlot() {
+	<-l.semaphore
+}
--- a/pkg/local_object_storage/shard/container.go
+++ b/pkg/local_object_storage/shard/container.go
@ -26,7 +26,7 @@ func (r ContainerSizeRes) Size() uint64 {
 	return r.size
 }

-func (s *Shard) ContainerSize(prm ContainerSizePrm) (ContainerSizeRes, error) {
+func (s *Shard) ContainerSize(ctx context.Context, prm ContainerSizePrm) (ContainerSizeRes, error) {
 	s.m.RLock()
 	defer s.m.RUnlock()

@ -34,6 +34,12 @@ func (s *Shard) ContainerSize(prm ContainerSizePrm) (ContainerSizeRes, error) {
 		return ContainerSizeRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return ContainerSizeRes{}, err
+	}
+	defer release()
+
 	size, err := s.metaBase.ContainerSize(prm.cnr)
 	if err != nil {
 		return ContainerSizeRes{}, fmt.Errorf("get container size: %w", err)
@ -69,6 +75,12 @@ func (s *Shard) ContainerCount(ctx context.Context, prm ContainerCountPrm) (Cont
 		return ContainerCountRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return ContainerCountRes{}, err
+	}
+	defer release()
+
 	counters, err := s.metaBase.ContainerCount(ctx, prm.ContainerID)
 	if err != nil {
 		return ContainerCountRes{}, fmt.Errorf("get container counters: %w", err)
@ -100,6 +112,12 @@ func (s *Shard) DeleteContainerSize(ctx context.Context, id cid.ID) error {
 		return ErrDegradedMode
 	}

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	return s.metaBase.DeleteContainerSize(ctx, id)
 }

@ -122,5 +140,11 @@ func (s *Shard) DeleteContainerCount(ctx context.Context, id cid.ID) error {
 		return ErrDegradedMode
 	}

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	return s.metaBase.DeleteContainerCount(ctx, id)
 }
--- a/pkg/local_object_storage/shard/control.go
+++ b/pkg/local_object_storage/shard/control.go
@ -395,6 +395,10 @@ func (s *Shard) Close(ctx context.Context) error {
 		s.gc.stop(ctx)
 	}

+	if s.opsLimiter != nil {
+		s.opsLimiter.Close()
+	}
+
 	return lastErr
 }

@ -445,6 +449,10 @@ func (s *Shard) Reload(ctx context.Context, opts ...Option) error {
 			return err
 		}
 	}
+	if c.opsLimiter != nil {
+		s.opsLimiter.Close()
+		s.opsLimiter = c.opsLimiter
+	}
 	return s.setMode(ctx, c.info.Mode)
 }

--- a/pkg/local_object_storage/shard/count.go
+++ b/pkg/local_object_storage/shard/count.go
@ -23,6 +23,12 @@ func (s *Shard) LogicalObjectsCount(ctx context.Context) (uint64, error) {
 		return 0, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer release()
+
 	cc, err := s.metaBase.ObjectCounters()
 	if err != nil {
 		return 0, err
--- a/pkg/local_object_storage/shard/delete.go
+++ b/pkg/local_object_storage/shard/delete.go
@ -54,6 +54,12 @@ func (s *Shard) delete(ctx context.Context, prm DeletePrm, skipFailed bool) (Del
 		return DeleteRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return DeleteRes{}, err
+	}
+	defer release()
+
 	result := DeleteRes{}
 	for _, addr := range prm.addr {
 		select {
--- a/pkg/local_object_storage/shard/exists.go
+++ b/pkg/local_object_storage/shard/exists.go
@ -53,10 +53,6 @@ func (s *Shard) Exists(ctx context.Context, prm ExistsPrm) (ExistsRes, error) {
 		))
 	defer span.End()

-	var exists bool
-	var locked bool
-	var err error
-
 	s.m.RLock()
 	defer s.m.RUnlock()

@ -64,7 +60,18 @@ func (s *Shard) Exists(ctx context.Context, prm ExistsPrm) (ExistsRes, error) {
 		return ExistsRes{}, ErrShardDisabled
 	} else if s.info.EvacuationInProgress {
 		return ExistsRes{}, logicerr.Wrap(new(apistatus.ObjectNotFound))
-	} else if s.info.Mode.NoMetabase() {
+	}
+
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return ExistsRes{}, err
+	}
+	defer release()
+
+	var exists bool
+	var locked bool
+
+	if s.info.Mode.NoMetabase() {
 		var p common.ExistsPrm
 		p.Address = prm.Address

--- a/pkg/local_object_storage/shard/gc.go
+++ b/pkg/local_object_storage/shard/gc.go
@ -291,28 +291,7 @@ func (s *Shard) removeGarbage(pctx context.Context) (result gcRunResult) {
 	s.log.Debug(ctx, logs.ShardGCRemoveGarbageStarted)
 	defer s.log.Debug(ctx, logs.ShardGCRemoveGarbageCompleted)

-	buf := make([]oid.Address, 0, s.rmBatchSize)
-
-	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 {
-			return meta.ErrInterruptIterator
-		}
-
-		return nil
-	})
-
-	// iterate over metabase's objects with GC mark
-	// (no more than s.rmBatchSize objects)
-	err := s.metaBase.IterateOverGarbage(ctx, iterPrm)
+	buf, err := s.getGarbage(ctx)
 	if err != nil {
 		s.log.Warn(ctx, logs.ShardIteratorOverMetabaseGraveyardFailed,
 			zap.Error(err),
@ -344,6 +323,39 @@ func (s *Shard) removeGarbage(pctx context.Context) (result gcRunResult) {
 	return
 }

+func (s *Shard) getGarbage(ctx context.Context) ([]oid.Address, error) {
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
+
+	buf := make([]oid.Address, 0, s.rmBatchSize)
+
+	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 {
+			return meta.ErrInterruptIterator
+		}
+
+		return nil
+	})
+
+	if err := s.metaBase.IterateOverGarbage(ctx, iterPrm); err != nil {
+		return nil, err
+	}
+
+	return buf, nil
+}
+
 func (s *Shard) getExpiredObjectsParameters() (workerCount, batchSize int) {
 	workerCount = max(minExpiredWorkers, s.gc.gcCfg.expiredCollectorWorkerCount)
 	batchSize = max(minExpiredBatchSize, s.gc.gcCfg.expiredCollectorBatchSize)
@ -422,18 +434,9 @@ func (s *Shard) handleExpiredObjects(ctx context.Context, expired []oid.Address)
 		return
 	}

-	var inhumePrm meta.InhumePrm
-
-	inhumePrm.SetAddresses(expired...)
-	inhumePrm.SetGCMark()
-
-	// inhume the collected objects
-	res, err := s.metaBase.Inhume(ctx, inhumePrm)
+	res, err := s.inhumeGC(ctx, expired)
 	if err != nil {
-		s.log.Warn(ctx, logs.ShardCouldNotInhumeTheObjects,
-			zap.Error(err),
-		)
-
+		s.log.Warn(ctx, logs.ShardCouldNotInhumeTheObjects, zap.Error(err))
 		return
 	}

@ -451,6 +454,12 @@ func (s *Shard) handleExpiredObjects(ctx context.Context, expired []oid.Address)
 }

 func (s *Shard) getExpiredWithLinked(ctx context.Context, source []oid.Address) ([]oid.Address, error) {
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
+
 	result := make([]oid.Address, 0, len(source))
 	parentToChildren, err := s.metaBase.GetChildren(ctx, source)
 	if err != nil {
@ -464,6 +473,19 @@ func (s *Shard) getExpiredWithLinked(ctx context.Context, source []oid.Address)
 	return result, nil
 }

+func (s *Shard) inhumeGC(ctx context.Context, addrs []oid.Address) (meta.InhumeRes, error) {
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return meta.InhumeRes{}, err
+	}
+	defer release()
+
+	var inhumePrm meta.InhumePrm
+	inhumePrm.SetAddresses(addrs...)
+	inhumePrm.SetGCMark()
+	return s.metaBase.Inhume(ctx, inhumePrm)
+}
+
 func (s *Shard) collectExpiredTombstones(ctx context.Context, e Event) {
 	var err error
 	startedAt := time.Now()
@ -505,11 +527,17 @@ func (s *Shard) collectExpiredTombstones(ctx context.Context, e Event) {
 			return
 		}

-		err = s.metaBase.IterateOverGraveyard(ctx, iterPrm)
+		release, err := s.opsLimiter.ReadRequest(ctx)
+		if err != nil {
+			log.Error(ctx, logs.ShardIteratorOverGraveyardFailed, zap.Error(err))
+			s.m.RUnlock()
+			return
+		}
+		err = s.metaBase.IterateOverGraveyard(ctx, iterPrm)
+		release()
 		if err != nil {
 			log.Error(ctx, logs.ShardIteratorOverGraveyardFailed, zap.Error(err))
 			s.m.RUnlock()
-
 			return
 		}

@ -598,7 +626,13 @@ func (s *Shard) getExpiredObjects(ctx context.Context, epoch uint64, onExpiredFo
 		return ErrDegradedMode
 	}

-	err := s.metaBase.IterateExpired(ctx, epoch, func(expiredObject *meta.ExpiredObject) error {
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
+	err = s.metaBase.IterateExpired(ctx, epoch, func(expiredObject *meta.ExpiredObject) error {
 		select {
 		case <-ctx.Done():
 			return meta.ErrInterruptIterator
@ -621,6 +655,12 @@ func (s *Shard) selectExpired(ctx context.Context, epoch uint64, addresses []oid
 		return nil, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
+
 	return s.metaBase.FilterExpired(ctx, epoch, addresses)
 }

@ -636,12 +676,15 @@ func (s *Shard) HandleExpiredTombstones(ctx context.Context, tss []meta.Tombston
 		return
 	}

-	res, err := s.metaBase.InhumeTombstones(ctx, tss)
+	release, err := s.opsLimiter.WriteRequest(ctx)
 	if err != nil {
-		s.log.Warn(ctx, logs.ShardCouldNotMarkTombstonesAsGarbage,
-			zap.Error(err),
-		)
-
+		s.log.Warn(ctx, logs.ShardCouldNotMarkTombstonesAsGarbage, zap.Error(err))
+		return
+	}
+	res, err := s.metaBase.InhumeTombstones(ctx, tss)
+	release()
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardCouldNotMarkTombstonesAsGarbage, zap.Error(err))
 		return
 	}

@ -664,11 +707,16 @@ func (s *Shard) HandleExpiredLocks(ctx context.Context, epoch uint64, lockers []
 	if s.GetMode().NoMetabase() {
 		return
 	}
-	unlocked, err := s.metaBase.FreeLockedBy(lockers)
+
+	release, err := s.opsLimiter.WriteRequest(ctx)
 	if err != nil {
-		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects,
-			zap.Error(err),
-		)
+		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects, zap.Error(err))
+		return
+	}
+	unlocked, err := s.metaBase.FreeLockedBy(lockers)
+	release()
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects, zap.Error(err))

 		return
 	}
@ -676,13 +724,15 @@ func (s *Shard) HandleExpiredLocks(ctx context.Context, epoch uint64, lockers []
 	var pInhume meta.InhumePrm
 	pInhume.SetAddresses(lockers...)
 	pInhume.SetForceGCMark()
-
-	res, err := s.metaBase.Inhume(ctx, pInhume)
+	release, err = s.opsLimiter.WriteRequest(ctx)
 	if err != nil {
-		s.log.Warn(ctx, logs.ShardFailureToMarkLockersAsGarbage,
-			zap.Error(err),
-		)
-
+		s.log.Warn(ctx, logs.ShardFailureToMarkLockersAsGarbage, zap.Error(err))
+		return
+	}
+	res, err := s.metaBase.Inhume(ctx, pInhume)
+	release()
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardFailureToMarkLockersAsGarbage, zap.Error(err))
 		return
 	}

@ -721,12 +771,15 @@ func (s *Shard) HandleDeletedLocks(ctx context.Context, lockers []oid.Address) {
 		return
 	}

-	_, err := s.metaBase.FreeLockedBy(lockers)
+	release, err := s.opsLimiter.WriteRequest(ctx)
 	if err != nil {
-		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects,
-			zap.Error(err),
-		)
-
+		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects, zap.Error(err))
+		return
+	}
+	_, err = s.metaBase.FreeLockedBy(lockers)
+	release()
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardFailureToUnlockObjects, zap.Error(err))
 		return
 	}
 }
@ -750,7 +803,13 @@ func (s *Shard) collectExpiredMetrics(ctx context.Context, e Event) {
 }

 func (s *Shard) collectExpiredContainerSizeMetrics(ctx context.Context, epoch uint64) {
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardGCFailedToCollectZeroSizeContainers, zap.Uint64("epoch", epoch), zap.Error(err))
+		return
+	}
 	ids, err := s.metaBase.ZeroSizeContainers(ctx)
+	release()
 	if err != nil {
 		s.log.Warn(ctx, logs.ShardGCFailedToCollectZeroSizeContainers, zap.Uint64("epoch", epoch), zap.Error(err))
 		return
@ -762,7 +821,13 @@ func (s *Shard) collectExpiredContainerSizeMetrics(ctx context.Context, epoch ui
 }

 func (s *Shard) collectExpiredContainerCountMetrics(ctx context.Context, epoch uint64) {
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		s.log.Warn(ctx, logs.ShardGCFailedToCollectZeroCountContainers, zap.Uint64("epoch", epoch), zap.Error(err))
+		return
+	}
 	ids, err := s.metaBase.ZeroCountContainers(ctx)
+	release()
 	if err != nil {
 		s.log.Warn(ctx, logs.ShardGCFailedToCollectZeroCountContainers, zap.Uint64("epoch", epoch), zap.Error(err))
 		return
--- a/pkg/local_object_storage/shard/get.go
+++ b/pkg/local_object_storage/shard/get.go
@ -111,6 +111,12 @@ func (s *Shard) Get(ctx context.Context, prm GetPrm) (GetRes, error) {
 		return c.Get(ctx, prm.addr)
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return GetRes{}, err
+	}
+	defer release()
+
 	skipMeta := prm.skipMeta || s.info.Mode.NoMetabase()
 	obj, hasMeta, err := s.fetchObjectData(ctx, prm.addr, skipMeta, cb, wc)

--- a/pkg/local_object_storage/shard/head.go
+++ b/pkg/local_object_storage/shard/head.go
@ -81,6 +81,12 @@ func (s *Shard) Head(ctx context.Context, prm HeadPrm) (HeadRes, error) {
 		headParams.SetAddress(prm.addr)
 		headParams.SetRaw(prm.raw)

+		release, limitErr := s.opsLimiter.ReadRequest(ctx)
+		if limitErr != nil {
+			return HeadRes{}, limitErr
+		}
+		defer release()
+
 		var res meta.GetRes
 		res, err = s.metaBase.Get(ctx, headParams)
 		obj = res.Header()
--- a/pkg/local_object_storage/shard/inhume.go
+++ b/pkg/local_object_storage/shard/inhume.go
@ -81,6 +81,12 @@ func (s *Shard) Inhume(ctx context.Context, prm InhumePrm) (InhumeRes, error) {
 		return InhumeRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return InhumeRes{}, err
+	}
+	defer release()
+
 	if s.hasWriteCache() {
 		for i := range prm.target {
 			_ = s.writeCache.Delete(ctx, prm.target[i])
--- a/pkg/local_object_storage/shard/list.go
+++ b/pkg/local_object_storage/shard/list.go
@ -106,6 +106,12 @@ func (s *Shard) List(ctx context.Context) (res SelectRes, err error) {
 		return SelectRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return SelectRes{}, err
+	}
+	defer release()
+
 	lst, err := s.metaBase.Containers(ctx)
 	if err != nil {
 		return res, fmt.Errorf("list stored containers: %w", err)
@ -145,6 +151,12 @@ func (s *Shard) ListContainers(ctx context.Context, _ ListContainersPrm) (ListCo
 		return ListContainersRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return ListContainersRes{}, err
+	}
+	defer release()
+
 	containers, err := s.metaBase.Containers(ctx)
 	if err != nil {
 		return ListContainersRes{}, fmt.Errorf("get list of containers: %w", err)
@ -173,6 +185,12 @@ func (s *Shard) ListWithCursor(ctx context.Context, prm ListWithCursorPrm) (List
 		return ListWithCursorRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return ListWithCursorRes{}, err
+	}
+	defer release()
+
 	var metaPrm meta.ListPrm
 	metaPrm.SetCount(prm.count)
 	metaPrm.SetCursor(prm.cursor)
@ -202,9 +220,15 @@ func (s *Shard) IterateOverContainers(ctx context.Context, prm IterateOverContai
 		return ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	var metaPrm meta.IterateOverContainersPrm
 	metaPrm.Handler = prm.Handler
-	err := s.metaBase.IterateOverContainers(ctx, metaPrm)
+	err = s.metaBase.IterateOverContainers(ctx, metaPrm)
 	if err != nil {
 		return fmt.Errorf("iterate over containers: %w", err)
 	}
@ -227,11 +251,17 @@ func (s *Shard) IterateOverObjectsInContainer(ctx context.Context, prm IterateOv
 		return ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	var metaPrm meta.IterateOverObjectsInContainerPrm
 	metaPrm.ContainerID = prm.ContainerID
 	metaPrm.ObjectType = prm.ObjectType
 	metaPrm.Handler = prm.Handler
-	err := s.metaBase.IterateOverObjectsInContainer(ctx, metaPrm)
+	err = s.metaBase.IterateOverObjectsInContainer(ctx, metaPrm)
 	if err != nil {
 		return fmt.Errorf("iterate over objects: %w", err)
 	}
@ -251,6 +281,12 @@ func (s *Shard) CountAliveObjectsInContainer(ctx context.Context, prm CountAlive
 		return 0, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer release()
+
 	var metaPrm meta.CountAliveObjectsInContainerPrm
 	metaPrm.ObjectType = prm.ObjectType
 	metaPrm.ContainerID = prm.ContainerID
--- a/pkg/local_object_storage/shard/lock.go
+++ b/pkg/local_object_storage/shard/lock.go
@ -38,7 +38,13 @@ func (s *Shard) Lock(ctx context.Context, idCnr cid.ID, locker oid.ID, locked []
 		return ErrDegradedMode
 	}

-	err := s.metaBase.Lock(ctx, idCnr, locker, locked)
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
+	err = s.metaBase.Lock(ctx, idCnr, locker, locked)
 	if err != nil {
 		return fmt.Errorf("metabase lock: %w", err)
 	}
@ -61,6 +67,12 @@ func (s *Shard) IsLocked(ctx context.Context, addr oid.Address) (bool, error) {
 		return false, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return false, err
+	}
+	defer release()
+
 	var prm meta.IsLockedPrm
 	prm.SetAddress(addr)

@ -86,5 +98,12 @@ func (s *Shard) GetLocks(ctx context.Context, addr oid.Address) ([]oid.ID, error
 	if m.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
+
 	return s.metaBase.GetLocks(ctx, addr)
 }
--- a/pkg/local_object_storage/shard/put.go
+++ b/pkg/local_object_storage/shard/put.go
@ -67,6 +67,12 @@ func (s *Shard) Put(ctx context.Context, prm PutPrm) (PutRes, error) {

 	var res common.PutRes

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return PutRes{}, err
+	}
+	defer release()
+
 	// exist check are not performed there, these checks should be executed
 	// ahead of `Put` by storage engine
 	tryCache := s.hasWriteCache() && !m.NoMetabase()
--- a/pkg/local_object_storage/shard/range.go
+++ b/pkg/local_object_storage/shard/range.go
@ -131,6 +131,12 @@ func (s *Shard) GetRange(ctx context.Context, prm RngPrm) (RngRes, error) {
 		return obj, nil
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return RngRes{}, err
+	}
+	defer release()
+
 	skipMeta := prm.skipMeta || s.info.Mode.NoMetabase()
 	obj, hasMeta, err := s.fetchObjectData(ctx, prm.addr, skipMeta, cb, wc)

--- a/pkg/local_object_storage/shard/rebuild.go
+++ b/pkg/local_object_storage/shard/rebuild.go
@ -8,6 +8,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"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"
@ -20,37 +21,9 @@ import (

 var ErrRebuildInProgress = errors.New("shard rebuild in progress")

-type RebuildWorkerLimiter interface {
-	AcquireWorkSlot(ctx context.Context) error
-	ReleaseWorkSlot()
-}
-
-type rebuildLimiter struct {
-	semaphore chan struct{}
-}
-
-func NewRebuildLimiter(workersCount uint32) RebuildWorkerLimiter {
-	return &rebuildLimiter{
-		semaphore: make(chan struct{}, workersCount),
-	}
-}
-
-func (l *rebuildLimiter) AcquireWorkSlot(ctx context.Context) error {
-	select {
-	case l.semaphore <- struct{}{}:
-		return nil
-	case <-ctx.Done():
-		return ctx.Err()
-	}
-}
-
-func (l *rebuildLimiter) ReleaseWorkSlot() {
-	<-l.semaphore
-}
-
 type rebuildTask struct {
-	limiter     RebuildWorkerLimiter
-	fillPercent int
+	concurrencyLimiter common.RebuildLimiter
+	fillPercent        int
 }

 type rebuilder struct {
@ -90,14 +63,14 @@ func (r *rebuilder) Start(ctx context.Context, bs *blobstor.BlobStor, mb *meta.D
 				if !ok {
 					continue
 				}
-				runRebuild(ctx, bs, mb, log, t.fillPercent, t.limiter)
+				runRebuild(ctx, bs, mb, log, t.fillPercent, t.concurrencyLimiter)
 			}
 		}
 	}()
 }

 func runRebuild(ctx context.Context, bs *blobstor.BlobStor, mb *meta.DB, log *logger.Logger,
-	fillPercent int, limiter RebuildWorkerLimiter,
+	fillPercent int, concLimiter common.RebuildLimiter,
 ) {
 	select {
 	case <-ctx.Done():
@ -106,21 +79,21 @@ func runRebuild(ctx context.Context, bs *blobstor.BlobStor, mb *meta.DB, log *lo
 	}
 	log.Info(ctx, logs.BlobstoreRebuildStarted)
 	ctx = tagging.ContextWithIOTag(ctx, qos.IOTagBackground.String())
-	if err := bs.Rebuild(ctx, &mbStorageIDUpdate{mb: mb}, limiter, fillPercent); err != nil {
+	if err := bs.Rebuild(ctx, &mbStorageIDUpdate{mb: mb}, concLimiter, fillPercent); err != nil {
 		log.Warn(ctx, logs.FailedToRebuildBlobstore, zap.Error(err))
 	} else {
 		log.Info(ctx, logs.BlobstoreRebuildCompletedSuccessfully)
 	}
 }

-func (r *rebuilder) ScheduleRebuild(ctx context.Context, limiter RebuildWorkerLimiter, fillPercent int,
+func (r *rebuilder) ScheduleRebuild(ctx context.Context, limiter common.RebuildLimiter, fillPercent int,
 ) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
 	case r.tasks <- rebuildTask{
-		limiter:     limiter,
-		fillPercent: fillPercent,
+		concurrencyLimiter: limiter,
+		fillPercent:        fillPercent,
 	}:
 		return nil
 	default:
@ -169,7 +142,7 @@ func (u *mbStorageIDUpdate) UpdateStorageID(ctx context.Context, addr oid.Addres
 }

 type RebuildPrm struct {
-	ConcurrencyLimiter RebuildWorkerLimiter
+	ConcurrencyLimiter common.ConcurrencyLimiter
 	TargetFillPercent  uint32
 }

@ -191,5 +164,30 @@ func (s *Shard) ScheduleRebuild(ctx context.Context, p RebuildPrm) error {
 		return ErrDegradedMode
 	}

-	return s.rb.ScheduleRebuild(ctx, p.ConcurrencyLimiter, int(p.TargetFillPercent))
+	limiter := &rebuildLimiter{
+		concurrencyLimiter: p.ConcurrencyLimiter,
+		rateLimiter:        s.opsLimiter,
+	}
+	return s.rb.ScheduleRebuild(ctx, limiter, int(p.TargetFillPercent))
+}
+
+var _ common.RebuildLimiter = (*rebuildLimiter)(nil)
+
+type rebuildLimiter struct {
+	concurrencyLimiter common.ConcurrencyLimiter
+	rateLimiter        qos.Limiter
+}
+
+func (r *rebuildLimiter) AcquireWorkSlot(ctx context.Context) (common.ReleaseFunc, error) {
+	return r.concurrencyLimiter.AcquireWorkSlot(ctx)
+}
+
+func (r *rebuildLimiter) ReadRequest(ctx context.Context) (common.ReleaseFunc, error) {
+	release, err := r.rateLimiter.ReadRequest(ctx)
+	return common.ReleaseFunc(release), err
+}
+
+func (r *rebuildLimiter) WriteRequest(ctx context.Context) (common.ReleaseFunc, error) {
+	release, err := r.rateLimiter.WriteRequest(ctx)
+	return common.ReleaseFunc(release), err
 }
--- a/pkg/local_object_storage/shard/select.go
+++ b/pkg/local_object_storage/shard/select.go
@ -60,6 +60,12 @@ func (s *Shard) Select(ctx context.Context, prm SelectPrm) (SelectRes, error) {
 		return SelectRes{}, ErrDegradedMode
 	}

+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return SelectRes{}, nil
+	}
+	defer release()
+
 	var selectPrm meta.SelectPrm
 	selectPrm.SetFilters(prm.filters)
 	selectPrm.SetContainerID(prm.cnr)
--- a/pkg/local_object_storage/shard/shard.go
+++ b/pkg/local_object_storage/shard/shard.go
@ -7,6 +7,7 @@ import (
 	"time"

 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
@ -98,6 +99,8 @@ type cfg struct {
 	reportErrorFunc func(ctx context.Context, selfID string, message string, err error)

 	containerInfo container.InfoProvider
+
+	opsLimiter qos.Limiter
 }

 func defaultCfg() *cfg {
@ -109,6 +112,7 @@ func defaultCfg() *cfg {
 		zeroSizeContainersCallback:  func(context.Context, []cid.ID) {},
 		zeroCountContainersCallback: func(context.Context, []cid.ID) {},
 		metricsWriter:               noopMetrics{},
+		opsLimiter:                  qos.NewNoopLimiter(),
 	}
 }

@ -368,6 +372,12 @@ func WithContainerInfoProvider(containerInfo container.InfoProvider) Option {
 	}
 }

+func WithLimiter(l qos.Limiter) Option {
+	return func(c *cfg) {
+		c.opsLimiter = l
+	}
+}
+
 func (s *Shard) fillInfo() {
 	s.cfg.info.MetaBaseInfo = s.metaBase.DumpInfo()
 	s.cfg.info.BlobStorInfo = s.blobStor.DumpInfo()
--- a/pkg/local_object_storage/shard/tree.go
+++ b/pkg/local_object_storage/shard/tree.go
@ -43,6 +43,11 @@ func (s *Shard) TreeMove(ctx context.Context, d pilorama.CIDDescriptor, treeID s
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeMove(ctx, d, treeID, m)
 }

@ -75,6 +80,11 @@ func (s *Shard) TreeAddByPath(ctx context.Context, d pilorama.CIDDescriptor, tre
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeAddByPath(ctx, d, treeID, attr, path, meta)
 }

@ -103,6 +113,11 @@ func (s *Shard) TreeApply(ctx context.Context, cnr cidSDK.ID, treeID string, m *
 	if s.info.Mode.NoMetabase() {
 		return ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
 	return s.pilorama.TreeApply(ctx, cnr, treeID, m, backgroundSync)
 }

@ -130,6 +145,11 @@ func (s *Shard) TreeApplyBatch(ctx context.Context, cnr cidSDK.ID, treeID string
 	if s.info.Mode.NoMetabase() {
 		return ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
 	return s.pilorama.TreeApplyBatch(ctx, cnr, treeID, m)
 }

@ -157,6 +177,11 @@ func (s *Shard) TreeGetByPath(ctx context.Context, cid cidSDK.ID, treeID string,
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeGetByPath(ctx, cid, treeID, attr, path, latest)
 }

@ -182,6 +207,11 @@ func (s *Shard) TreeGetMeta(ctx context.Context, cid cidSDK.ID, treeID string, n
 	if s.info.Mode.NoMetabase() {
 		return pilorama.Meta{}, 0, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return pilorama.Meta{}, 0, err
+	}
+	defer release()
 	return s.pilorama.TreeGetMeta(ctx, cid, treeID, nodeID)
 }

@ -207,6 +237,11 @@ func (s *Shard) TreeGetChildren(ctx context.Context, cid cidSDK.ID, treeID strin
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeGetChildren(ctx, cid, treeID, nodeID)
 }

@ -231,6 +266,11 @@ func (s *Shard) TreeSortedByFilename(ctx context.Context, cid cidSDK.ID, treeID
 	if s.info.Mode.NoMetabase() {
 		return nil, last, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, last, err
+	}
+	defer release()
 	return s.pilorama.TreeSortedByFilename(ctx, cid, treeID, nodeID, last, count)
 }

@ -256,6 +296,11 @@ func (s *Shard) TreeGetOpLog(ctx context.Context, cid cidSDK.ID, treeID string,
 	if s.info.Mode.NoMetabase() {
 		return pilorama.Move{}, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return pilorama.Move{}, err
+	}
+	defer release()
 	return s.pilorama.TreeGetOpLog(ctx, cid, treeID, height)
 }

@ -280,6 +325,11 @@ func (s *Shard) TreeDrop(ctx context.Context, cid cidSDK.ID, treeID string) erro
 	if s.info.Mode.NoMetabase() {
 		return ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
 	return s.pilorama.TreeDrop(ctx, cid, treeID)
 }

@ -303,6 +353,11 @@ func (s *Shard) TreeList(ctx context.Context, cid cidSDK.ID) ([]string, error) {
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeList(ctx, cid)
 }

@ -326,6 +381,11 @@ func (s *Shard) TreeHeight(ctx context.Context, cid cidSDK.ID, treeID string) (u
 	if s.pilorama == nil {
 		return 0, ErrPiloramaDisabled
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer release()
 	return s.pilorama.TreeHeight(ctx, cid, treeID)
 }

@ -350,6 +410,11 @@ func (s *Shard) TreeExists(ctx context.Context, cid cidSDK.ID, treeID string) (b
 	if s.info.Mode.NoMetabase() {
 		return false, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return false, err
+	}
+	defer release()
 	return s.pilorama.TreeExists(ctx, cid, treeID)
 }

@ -378,6 +443,11 @@ func (s *Shard) TreeUpdateLastSyncHeight(ctx context.Context, cid cidSDK.ID, tre
 	if s.info.Mode.NoMetabase() {
 		return ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
 	return s.pilorama.TreeUpdateLastSyncHeight(ctx, cid, treeID, height)
 }

@ -402,6 +472,11 @@ func (s *Shard) TreeLastSyncHeight(ctx context.Context, cid cidSDK.ID, treeID st
 	if s.info.Mode.NoMetabase() {
 		return 0, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer release()
 	return s.pilorama.TreeLastSyncHeight(ctx, cid, treeID)
 }

@ -423,6 +498,11 @@ func (s *Shard) TreeListTrees(ctx context.Context, prm pilorama.TreeListTreesPrm
 	if s.info.Mode.NoMetabase() {
 		return nil, ErrDegradedMode
 	}
+	release, err := s.opsLimiter.ReadRequest(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
 	return s.pilorama.TreeListTrees(ctx, prm)
 }

@ -452,5 +532,10 @@ func (s *Shard) TreeApplyStream(ctx context.Context, cnr cidSDK.ID, treeID strin
 	if s.info.Mode.NoMetabase() {
 		return ErrDegradedMode
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
 	return s.pilorama.TreeApplyStream(ctx, cnr, treeID, source)
 }
--- a/pkg/local_object_storage/shard/writecache.go
+++ b/pkg/local_object_storage/shard/writecache.go
@ -67,6 +67,12 @@ func (s *Shard) FlushWriteCache(ctx context.Context, p FlushWriteCachePrm) error
 		return ErrDegradedMode
 	}

+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	return s.writeCache.Flush(ctx, p.ignoreErrors, p.seal)
 }

@ -124,6 +130,13 @@ func (s *Shard) SealWriteCache(ctx context.Context, p SealWriteCachePrm) error {
 			close(started)
 			defer cleanup()

+			release, err := s.opsLimiter.WriteRequest(ctx)
+			if err != nil {
+				s.log.Warn(ctx, logs.FailedToSealWritecacheAsync, zap.Error(err))
+				return
+			}
+			defer release()
+
 			s.log.Info(ctx, logs.StartedWritecacheSealAsync)
 			if err := s.writeCache.Seal(ctx, prm); err != nil {
 				s.log.Warn(ctx, logs.FailedToSealWritecacheAsync, zap.Error(err))
@ -138,5 +151,11 @@ func (s *Shard) SealWriteCache(ctx context.Context, p SealWriteCachePrm) error {
 			return nil
 		}
 	}
+	release, err := s.opsLimiter.WriteRequest(ctx)
+	if err != nil {
+		return err
+	}
+	defer release()
+
 	return s.writeCache.Seal(ctx, prm)
 }
--- a/pkg/services/object/qos.go
+++ b/pkg/services/object/qos.go
@ -3,6 +3,8 @@ package object
 import (
 	"context"

+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
+	"git.frostfs.info/TrueCloudLab/frostfs-qos/tagging"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
 )
@ -120,13 +122,24 @@ type qosSendRecv[TReq qosVerificationHeader, TResp any] interface {
 type qosWriteStream[TReq qosVerificationHeader, TResp any] struct {
 	s   qosSendRecv[TReq, TResp]
 	adj AdjustIOTag
+
+	ioTag        string
+	ioTagDefined bool
 }

 func (q *qosWriteStream[TReq, TResp]) CloseAndRecv(ctx context.Context) (TResp, error) {
+	if q.ioTagDefined {
+		ctx = tagging.ContextWithIOTag(ctx, q.ioTag)
+	}
 	return q.s.CloseAndRecv(ctx)
 }

 func (q *qosWriteStream[TReq, TResp]) Send(ctx context.Context, req TReq) error {
-	ctx = q.adj.AdjustIncomingTag(ctx, req.GetVerificationHeader().GetBodySignature().GetKey())
+	if !q.ioTagDefined {
+		ctx = q.adj.AdjustIncomingTag(ctx, req.GetVerificationHeader().GetBodySignature().GetKey())
+		q.ioTag, q.ioTagDefined = tagging.IOTagFromContext(ctx)
+	}
+	assert.True(q.ioTagDefined, "io tag undefined after incoming tag adjustment")
+	ctx = tagging.ContextWithIOTag(ctx, q.ioTag)
 	return q.s.Send(ctx, req)
 }