[#1718] linter: Enable gocritic linter

See https://go-critic.com/overview#checkers-from-the-diagnostic-group for
list of default enabled checkers.
`ifElseChain` disabled as it generates doubtful issues.

Change-Id: I5937b116d9af8b3cdf8b06451c4904d0b3f67f68
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

.ci/Jenkinsfile

@@ -78,10 +78,4 @@ async {
             }
         }
     }
-
-    task('dco') {
-        container('git.frostfs.info/truecloudlab/commit-check:master') {
-            sh 'FROM=pull_request_target commit-check'
-        }
-    }
 }

.golangci.yml

@@ -18,6 +18,7 @@ linters:
     - exhaustive
     - funlen
     - gocognit
+    - gocritic
     - godot
     - importas
     - ineffassign
@@ -44,6 +45,9 @@ linters:
       statements: 60
     gocognit:
       min-complexity: 40
+    gocritic:
+      disabled-checks:
+        - ifElseChain
     importas:
       alias:
         - pkg: git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object

cmd/frostfs-adm/internal/modules/maintenance/root.go

@@ -0,0 +1,15 @@
+package maintenance
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/maintenance/zombie"
+	"github.com/spf13/cobra"
+)
+
+var RootCmd = &cobra.Command{
+	Use:   "maintenance",
+	Short: "Section for maintenance commands",
+}
+
+func init() {
+	RootCmd.AddCommand(zombie.Cmd)
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/key.go

@@ -0,0 +1,70 @@
+package zombie
+
+import (
+	"crypto/ecdsa"
+	"fmt"
+	"os"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	nodeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/node"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"github.com/nspcc-dev/neo-go/cli/flags"
+	"github.com/nspcc-dev/neo-go/cli/input"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+func getPrivateKey(cmd *cobra.Command, appCfg *config.Config) *ecdsa.PrivateKey {
+	keyDesc := viper.GetString(walletFlag)
+	if keyDesc == "" {
+		return &nodeconfig.Key(appCfg).PrivateKey
+	}
+	data, err := os.ReadFile(keyDesc)
+	commonCmd.ExitOnErr(cmd, "open wallet file: %w", err)
+
+	priv, err := keys.NewPrivateKeyFromBytes(data)
+	if err != nil {
+		w, err := wallet.NewWalletFromFile(keyDesc)
+		commonCmd.ExitOnErr(cmd, "provided key is incorrect, only wallet or binary key supported: %w", err)
+		return fromWallet(cmd, w, viper.GetString(addressFlag))
+	}
+	return &priv.PrivateKey
+}
+
+func fromWallet(cmd *cobra.Command, w *wallet.Wallet, addrStr string) *ecdsa.PrivateKey {
+	var (
+		addr util.Uint160
+		err  error
+	)
+
+	if addrStr == "" {
+		addr = w.GetChangeAddress()
+	} else {
+		addr, err = flags.ParseAddress(addrStr)
+		commonCmd.ExitOnErr(cmd, "--address option must be specified and valid: %w", err)
+	}
+
+	acc := w.GetAccount(addr)
+	if acc == nil {
+		commonCmd.ExitOnErr(cmd, "--address option must be specified and valid: %w", fmt.Errorf("can't find wallet account for %s", addrStr))
+	}
+
+	pass, err := getPassword()
+	commonCmd.ExitOnErr(cmd, "invalid password for the encrypted key: %w", err)
+
+	commonCmd.ExitOnErr(cmd, "can't decrypt account: %w", acc.Decrypt(pass, keys.NEP2ScryptParams()))
+
+	return &acc.PrivateKey().PrivateKey
+}
+
+func getPassword() (string, error) {
+	// this check allows empty passwords
+	if viper.IsSet("password") {
+		return viper.GetString("password"), nil
+	}
+
+	return input.ReadPassword("Enter password > ")
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/list.go

@@ -0,0 +1,31 @@
+package zombie
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+)
+
+func list(cmd *cobra.Command, _ []string) {
+	configFile, _ := cmd.Flags().GetString(commonflags.ConfigFlag)
+	configDir, _ := cmd.Flags().GetString(commonflags.ConfigDirFlag)
+	appCfg := config.New(configFile, configDir, config.EnvPrefix)
+	storageEngine := newEngine(cmd, appCfg)
+	q := createQuarantine(cmd, storageEngine.DumpInfo())
+	var containerID *cid.ID
+	if cidStr, _ := cmd.Flags().GetString(cidFlag); cidStr != "" {
+		containerID = &cid.ID{}
+		commonCmd.ExitOnErr(cmd, "decode container ID string: %w", containerID.DecodeString(cidStr))
+	}
+
+	commonCmd.ExitOnErr(cmd, "iterate over quarantine: %w", q.Iterate(cmd.Context(), func(a oid.Address) error {
+		if containerID != nil && a.Container() != *containerID {
+			return nil
+		}
+		cmd.Println(a.EncodeToString())
+		return nil
+	}))
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/morph.go

@@ -0,0 +1,46 @@
+package zombie
+
+import (
+	"errors"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	morphconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/morph"
+	nodeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/node"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
+	cntClient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/container"
+	netmapClient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/netmap"
+	"github.com/spf13/cobra"
+)
+
+func createMorphClient(cmd *cobra.Command, appCfg *config.Config) *client.Client {
+	addresses := morphconfig.RPCEndpoint(appCfg)
+	if len(addresses) == 0 {
+		commonCmd.ExitOnErr(cmd, "create morph client: %w", errors.New("no morph endpoints found"))
+	}
+	key := nodeconfig.Key(appCfg)
+	cli, err := client.New(cmd.Context(),
+		key,
+		client.WithDialTimeout(morphconfig.DialTimeout(appCfg)),
+		client.WithEndpoints(addresses...),
+		client.WithSwitchInterval(morphconfig.SwitchInterval(appCfg)),
+	)
+	commonCmd.ExitOnErr(cmd, "create morph client: %w", err)
+	return cli
+}
+
+func createContainerClient(cmd *cobra.Command, morph *client.Client) *cntClient.Client {
+	hs, err := morph.NNSContractAddress(client.NNSContainerContractName)
+	commonCmd.ExitOnErr(cmd, "resolve container contract hash: %w", err)
+	cc, err := cntClient.NewFromMorph(morph, hs, 0)
+	commonCmd.ExitOnErr(cmd, "create morph container client: %w", err)
+	return cc
+}
+
+func createNetmapClient(cmd *cobra.Command, morph *client.Client) *netmapClient.Client {
+	hs, err := morph.NNSContractAddress(client.NNSNetmapContractName)
+	commonCmd.ExitOnErr(cmd, "resolve netmap contract hash: %w", err)
+	cli, err := netmapClient.NewFromMorph(morph, hs, 0)
+	commonCmd.ExitOnErr(cmd, "create morph netmap client: %w", err)
+	return cli
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/quarantine.go

@@ -0,0 +1,154 @@
+package zombie
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	objectcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+)
+
+type quarantine struct {
+	// mtx protects current field.
+	mtx     sync.Mutex
+	current int
+	trees   []*fstree.FSTree
+}
+
+func createQuarantine(cmd *cobra.Command, engineInfo engine.Info) *quarantine {
+	var paths []string
+	for _, sh := range engineInfo.Shards {
+		var storagePaths []string
+		for _, st := range sh.BlobStorInfo.SubStorages {
+			storagePaths = append(storagePaths, st.Path)
+		}
+		if len(storagePaths) == 0 {
+			continue
+		}
+		paths = append(paths, filepath.Join(commonPath(storagePaths), "quarantine"))
+	}
+	q, err := newQuarantine(paths)
+	commonCmd.ExitOnErr(cmd, "create quarantine: %w", err)
+	return q
+}
+
+func commonPath(paths []string) string {
+	if len(paths) == 0 {
+		return ""
+	}
+	if len(paths) == 1 {
+		return paths[0]
+	}
+	minLen := math.MaxInt
+	for _, p := range paths {
+		if len(p) < minLen {
+			minLen = len(p)
+		}
+	}
+
+	var sb strings.Builder
+	for i := range minLen {
+		for _, path := range paths[1:] {
+			if paths[0][i] != path[i] {
+				return sb.String()
+			}
+		}
+		sb.WriteByte(paths[0][i])
+	}
+	return sb.String()
+}
+
+func newQuarantine(paths []string) (*quarantine, error) {
+	var q quarantine
+	for i := range paths {
+		f := fstree.New(
+			fstree.WithDepth(1),
+			fstree.WithDirNameLen(1),
+			fstree.WithPath(paths[i]),
+			fstree.WithPerm(os.ModePerm),
+		)
+		if err := f.Open(mode.ComponentReadWrite); err != nil {
+			return nil, fmt.Errorf("open fstree %s: %w", paths[i], err)
+		}
+		if err := f.Init(); err != nil {
+			return nil, fmt.Errorf("init fstree %s: %w", paths[i], err)
+		}
+		q.trees = append(q.trees, f)
+	}
+	return &q, nil
+}
+
+func (q *quarantine) Get(ctx context.Context, a oid.Address) (*objectSDK.Object, error) {
+	for i := range q.trees {
+		res, err := q.trees[i].Get(ctx, common.GetPrm{Address: a})
+		if err != nil {
+			continue
+		}
+		return res.Object, nil
+	}
+	return nil, &apistatus.ObjectNotFound{}
+}
+
+func (q *quarantine) Delete(ctx context.Context, a oid.Address) error {
+	for i := range q.trees {
+		_, err := q.trees[i].Delete(ctx, common.DeletePrm{Address: a})
+		if err != nil {
+			continue
+		}
+		return nil
+	}
+	return &apistatus.ObjectNotFound{}
+}
+
+func (q *quarantine) Put(ctx context.Context, obj *objectSDK.Object) error {
+	data, err := obj.Marshal()
+	if err != nil {
+		return err
+	}
+
+	var prm common.PutPrm
+	prm.Address = objectcore.AddressOf(obj)
+	prm.Object = obj
+	prm.RawData = data
+
+	q.mtx.Lock()
+	current := q.current
+	q.current = (q.current + 1) % len(q.trees)
+	q.mtx.Unlock()
+
+	_, err = q.trees[current].Put(ctx, prm)
+	return err
+}
+
+func (q *quarantine) Iterate(ctx context.Context, f func(oid.Address) error) error {
+	var prm common.IteratePrm
+	prm.Handler = func(elem common.IterationElement) error {
+		return f(elem.Address)
+	}
+	for i := range q.trees {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		_, err := q.trees[i].Iterate(ctx, prm)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/remove.go

@@ -0,0 +1,55 @@
+package zombie
+
+import (
+	"errors"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+)
+
+func remove(cmd *cobra.Command, _ []string) {
+	configFile, _ := cmd.Flags().GetString(commonflags.ConfigFlag)
+	configDir, _ := cmd.Flags().GetString(commonflags.ConfigDirFlag)
+	appCfg := config.New(configFile, configDir, config.EnvPrefix)
+	storageEngine := newEngine(cmd, appCfg)
+	q := createQuarantine(cmd, storageEngine.DumpInfo())
+
+	var containerID cid.ID
+	cidStr, _ := cmd.Flags().GetString(cidFlag)
+	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", containerID.DecodeString(cidStr))
+
+	var objectID *oid.ID
+	oidStr, _ := cmd.Flags().GetString(oidFlag)
+	if oidStr != "" {
+		objectID = &oid.ID{}
+		commonCmd.ExitOnErr(cmd, "decode object ID string: %w", objectID.DecodeString(oidStr))
+	}
+
+	if objectID != nil {
+		var addr oid.Address
+		addr.SetContainer(containerID)
+		addr.SetObject(*objectID)
+		removeObject(cmd, q, addr)
+	} else {
+		commonCmd.ExitOnErr(cmd, "iterate over quarantine: %w", q.Iterate(cmd.Context(), func(addr oid.Address) error {
+			if addr.Container() != containerID {
+				return nil
+			}
+			removeObject(cmd, q, addr)
+			return nil
+		}))
+	}
+}
+
+func removeObject(cmd *cobra.Command, q *quarantine, addr oid.Address) {
+	err := q.Delete(cmd.Context(), addr)
+	if errors.Is(err, new(apistatus.ObjectNotFound)) {
+		return
+	}
+	commonCmd.ExitOnErr(cmd, "remove object from quarantine: %w", err)
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/restore.go

@@ -0,0 +1,69 @@
+package zombie
+
+import (
+	"crypto/sha256"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	containerCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
+	cntClient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+)
+
+func restore(cmd *cobra.Command, _ []string) {
+	configFile, _ := cmd.Flags().GetString(commonflags.ConfigFlag)
+	configDir, _ := cmd.Flags().GetString(commonflags.ConfigDirFlag)
+	appCfg := config.New(configFile, configDir, config.EnvPrefix)
+	storageEngine := newEngine(cmd, appCfg)
+	q := createQuarantine(cmd, storageEngine.DumpInfo())
+	morphClient := createMorphClient(cmd, appCfg)
+	cnrCli := createContainerClient(cmd, morphClient)
+
+	var containerID cid.ID
+	cidStr, _ := cmd.Flags().GetString(cidFlag)
+	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", containerID.DecodeString(cidStr))
+
+	var objectID *oid.ID
+	oidStr, _ := cmd.Flags().GetString(oidFlag)
+	if oidStr != "" {
+		objectID = &oid.ID{}
+		commonCmd.ExitOnErr(cmd, "decode object ID string: %w", objectID.DecodeString(oidStr))
+	}
+
+	if objectID != nil {
+		var addr oid.Address
+		addr.SetContainer(containerID)
+		addr.SetObject(*objectID)
+		restoreObject(cmd, storageEngine, q, addr, cnrCli)
+	} else {
+		commonCmd.ExitOnErr(cmd, "iterate over quarantine: %w", q.Iterate(cmd.Context(), func(addr oid.Address) error {
+			if addr.Container() != containerID {
+				return nil
+			}
+			restoreObject(cmd, storageEngine, q, addr, cnrCli)
+			return nil
+		}))
+	}
+}
+
+func restoreObject(cmd *cobra.Command, storageEngine *engine.StorageEngine, q *quarantine, addr oid.Address, cnrCli *cntClient.Client) {
+	obj, err := q.Get(cmd.Context(), addr)
+	commonCmd.ExitOnErr(cmd, "get object from quarantine: %w", err)
+	rawCID := make([]byte, sha256.Size)
+
+	cid := addr.Container()
+	cid.Encode(rawCID)
+	cnr, err := cnrCli.Get(cmd.Context(), rawCID)
+	commonCmd.ExitOnErr(cmd, "get container: %w", err)
+
+	putPrm := engine.PutPrm{
+		Object:             obj,
+		IsIndexedContainer: containerCore.IsIndexedContainer(cnr.Value),
+	}
+	commonCmd.ExitOnErr(cmd, "put object to storage engine: %w", storageEngine.Put(cmd.Context(), putPrm))
+	commonCmd.ExitOnErr(cmd, "remove object from quarantine: %w", q.Delete(cmd.Context(), addr))
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/root.go

@@ -0,0 +1,123 @@
+package zombie
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+const (
+	flagBatchSize       = "batch-size"
+	flagBatchSizeUsage  = "Objects iteration batch size"
+	cidFlag             = "cid"
+	cidFlagUsage        = "Container ID"
+	oidFlag             = "oid"
+	oidFlagUsage        = "Object ID"
+	walletFlag          = "wallet"
+	walletFlagShorthand = "w"
+	walletFlagUsage     = "Path to the wallet or binary key"
+	addressFlag         = "address"
+	addressFlagUsage    = "Address of wallet account"
+	moveFlag            = "move"
+	moveFlagUsage       = "Move objects from storage engine to quarantine"
+)
+
+var (
+	Cmd = &cobra.Command{
+		Use:   "zombie",
+		Short: "Zombie objects related commands",
+	}
+	scanCmd = &cobra.Command{
+		Use:   "scan",
+		Short: "Scan storage engine for zombie objects and move them to quarantine",
+		Long:  "",
+		PreRun: func(cmd *cobra.Command, _ []string) {
+			_ = viper.BindPFlag(commonflags.ConfigFlag, cmd.Flags().Lookup(commonflags.ConfigFlag))
+			_ = viper.BindPFlag(commonflags.ConfigDirFlag, cmd.Flags().Lookup(commonflags.ConfigDirFlag))
+			_ = viper.BindPFlag(walletFlag, cmd.Flags().Lookup(walletFlag))
+			_ = viper.BindPFlag(addressFlag, cmd.Flags().Lookup(addressFlag))
+			_ = viper.BindPFlag(flagBatchSize, cmd.Flags().Lookup(flagBatchSize))
+			_ = viper.BindPFlag(moveFlag, cmd.Flags().Lookup(moveFlag))
+		},
+		Run: scan,
+	}
+	listCmd = &cobra.Command{
+		Use:   "list",
+		Short: "List zombie objects from quarantine",
+		Long:  "",
+		PreRun: func(cmd *cobra.Command, _ []string) {
+			_ = viper.BindPFlag(commonflags.ConfigFlag, cmd.Flags().Lookup(commonflags.ConfigFlag))
+			_ = viper.BindPFlag(commonflags.ConfigDirFlag, cmd.Flags().Lookup(commonflags.ConfigDirFlag))
+			_ = viper.BindPFlag(cidFlag, cmd.Flags().Lookup(cidFlag))
+		},
+		Run: list,
+	}
+	restoreCmd = &cobra.Command{
+		Use:   "restore",
+		Short: "Restore zombie objects from quarantine",
+		Long:  "",
+		PreRun: func(cmd *cobra.Command, _ []string) {
+			_ = viper.BindPFlag(commonflags.ConfigFlag, cmd.Flags().Lookup(commonflags.ConfigFlag))
+			_ = viper.BindPFlag(commonflags.ConfigDirFlag, cmd.Flags().Lookup(commonflags.ConfigDirFlag))
+			_ = viper.BindPFlag(cidFlag, cmd.Flags().Lookup(cidFlag))
+			_ = viper.BindPFlag(oidFlag, cmd.Flags().Lookup(oidFlag))
+		},
+		Run: restore,
+	}
+	removeCmd = &cobra.Command{
+		Use:   "remove",
+		Short: "Remove zombie objects from quarantine",
+		Long:  "",
+		PreRun: func(cmd *cobra.Command, _ []string) {
+			_ = viper.BindPFlag(commonflags.ConfigFlag, cmd.Flags().Lookup(commonflags.ConfigFlag))
+			_ = viper.BindPFlag(commonflags.ConfigDirFlag, cmd.Flags().Lookup(commonflags.ConfigDirFlag))
+			_ = viper.BindPFlag(cidFlag, cmd.Flags().Lookup(cidFlag))
+			_ = viper.BindPFlag(oidFlag, cmd.Flags().Lookup(oidFlag))
+		},
+		Run: remove,
+	}
+)
+
+func init() {
+	initScanCmd()
+	initListCmd()
+	initRestoreCmd()
+	initRemoveCmd()
+}
+
+func initScanCmd() {
+	Cmd.AddCommand(scanCmd)
+
+	scanCmd.Flags().StringP(commonflags.ConfigFlag, commonflags.ConfigFlagShorthand, "", commonflags.ConfigFlagUsage)
+	scanCmd.Flags().String(commonflags.ConfigDirFlag, "", commonflags.ConfigDirFlagUsage)
+	scanCmd.Flags().Uint32(flagBatchSize, 1000, flagBatchSizeUsage)
+	scanCmd.Flags().StringP(walletFlag, walletFlagShorthand, "", walletFlagUsage)
+	scanCmd.Flags().String(addressFlag, "", addressFlagUsage)
+	scanCmd.Flags().Bool(moveFlag, false, moveFlagUsage)
+}
+
+func initListCmd() {
+	Cmd.AddCommand(listCmd)
+
+	listCmd.Flags().StringP(commonflags.ConfigFlag, commonflags.ConfigFlagShorthand, "", commonflags.ConfigFlagUsage)
+	listCmd.Flags().String(commonflags.ConfigDirFlag, "", commonflags.ConfigDirFlagUsage)
+	listCmd.Flags().String(cidFlag, "", cidFlagUsage)
+}
+
+func initRestoreCmd() {
+	Cmd.AddCommand(restoreCmd)
+
+	restoreCmd.Flags().StringP(commonflags.ConfigFlag, commonflags.ConfigFlagShorthand, "", commonflags.ConfigFlagUsage)
+	restoreCmd.Flags().String(commonflags.ConfigDirFlag, "", commonflags.ConfigDirFlagUsage)
+	restoreCmd.Flags().String(cidFlag, "", cidFlagUsage)
+	restoreCmd.Flags().String(oidFlag, "", oidFlagUsage)
+}
+
+func initRemoveCmd() {
+	Cmd.AddCommand(removeCmd)
+
+	removeCmd.Flags().StringP(commonflags.ConfigFlag, commonflags.ConfigFlagShorthand, "", commonflags.ConfigFlagUsage)
+	removeCmd.Flags().String(commonflags.ConfigDirFlag, "", commonflags.ConfigDirFlagUsage)
+	removeCmd.Flags().String(cidFlag, "", cidFlagUsage)
+	removeCmd.Flags().String(oidFlag, "", oidFlagUsage)
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/scan.go

@@ -0,0 +1,281 @@
+package zombie
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/sha256"
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	apiclientconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/apiclient"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	clientCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
+	cntClient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network/cache"
+	clientSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+	"golang.org/x/sync/errgroup"
+)
+
+func scan(cmd *cobra.Command, _ []string) {
+	configFile, _ := cmd.Flags().GetString(commonflags.ConfigFlag)
+	configDir, _ := cmd.Flags().GetString(commonflags.ConfigDirFlag)
+	appCfg := config.New(configFile, configDir, config.EnvPrefix)
+	batchSize, _ := cmd.Flags().GetUint32(flagBatchSize)
+	if batchSize == 0 {
+		commonCmd.ExitOnErr(cmd, "invalid batch size: %w", errors.New("batch size must be positive value"))
+	}
+	move, _ := cmd.Flags().GetBool(moveFlag)
+
+	storageEngine := newEngine(cmd, appCfg)
+	morphClient := createMorphClient(cmd, appCfg)
+	cnrCli := createContainerClient(cmd, morphClient)
+	nmCli := createNetmapClient(cmd, morphClient)
+	q := createQuarantine(cmd, storageEngine.DumpInfo())
+	pk := getPrivateKey(cmd, appCfg)
+
+	epoch, err := nmCli.Epoch(cmd.Context())
+	commonCmd.ExitOnErr(cmd, "read epoch from morph: %w", err)
+
+	nm, err := nmCli.GetNetMapByEpoch(cmd.Context(), epoch)
+	commonCmd.ExitOnErr(cmd, "read netmap from morph: %w", err)
+
+	cmd.Printf("Epoch: %d\n", nm.Epoch())
+	cmd.Printf("Nodes in the netmap: %d\n", len(nm.Nodes()))
+
+	ps := &processStatus{
+		statusCount: make(map[status]uint64),
+	}
+
+	stopCh := make(chan struct{})
+	start := time.Now()
+	var wg sync.WaitGroup
+	wg.Add(2)
+	go func() {
+		defer wg.Done()
+		tick := time.NewTicker(time.Second)
+		defer tick.Stop()
+		for {
+			select {
+			case <-cmd.Context().Done():
+				return
+			case <-stopCh:
+				return
+			case <-tick.C:
+				fmt.Printf("Objects processed: %d; Time elapsed: %s\n", ps.total(), time.Since(start))
+			}
+		}
+	}()
+	go func() {
+		defer wg.Done()
+		err = scanStorageEngine(cmd, batchSize, storageEngine, ps, appCfg, cnrCli, nmCli, q, pk, move)
+		close(stopCh)
+	}()
+	wg.Wait()
+	commonCmd.ExitOnErr(cmd, "scan storage engine for zombie objects: %w", err)
+
+	cmd.Println()
+	cmd.Println("Status description:")
+	cmd.Println("undefined -- nothing is clear")
+	cmd.Println("found -- object is found in cluster")
+	cmd.Println("quarantine -- object is not found in cluster")
+	cmd.Println()
+	for status, count := range ps.statusCount {
+		cmd.Printf("Status: %s, Count: %d\n", status, count)
+	}
+}
+
+type status string
+
+const (
+	statusUndefined  status = "undefined"
+	statusFound      status = "found"
+	statusQuarantine status = "quarantine"
+)
+
+func checkAddr(ctx context.Context, cnrCli *cntClient.Client, nmCli *netmap.Client, cc *cache.ClientCache, obj object.Info) (status, error) {
+	rawCID := make([]byte, sha256.Size)
+	cid := obj.Address.Container()
+	cid.Encode(rawCID)
+
+	cnr, err := cnrCli.Get(ctx, rawCID)
+	if err != nil {
+		var errContainerNotFound *apistatus.ContainerNotFound
+		if errors.As(err, &errContainerNotFound) {
+			// Policer will deal with this object.
+			return statusFound, nil
+		}
+		return statusUndefined, fmt.Errorf("read container %s from morph: %w", cid, err)
+	}
+	nm, err := nmCli.NetMap(ctx)
+	if err != nil {
+		return statusUndefined, fmt.Errorf("read netmap from morph: %w", err)
+	}
+
+	nodes, err := nm.ContainerNodes(cnr.Value.PlacementPolicy(), rawCID)
+	if err != nil {
+		// Not enough nodes, check all netmap nodes.
+		nodes = append([][]netmap.NodeInfo{}, nm.Nodes())
+	}
+
+	objID := obj.Address.Object()
+	cnrID := obj.Address.Container()
+	local := true
+	raw := false
+	if obj.ECInfo != nil {
+		objID = obj.ECInfo.ParentID
+		local = false
+		raw = true
+	}
+	prm := clientSDK.PrmObjectHead{
+		ObjectID:    &objID,
+		ContainerID: &cnrID,
+		Local:       local,
+		Raw:         raw,
+	}
+
+	var ni clientCore.NodeInfo
+	for i := range nodes {
+		for j := range nodes[i] {
+			if err := clientCore.NodeInfoFromRawNetmapElement(&ni, netmapCore.Node(nodes[i][j])); err != nil {
+				return statusUndefined, fmt.Errorf("parse node info: %w", err)
+			}
+			c, err := cc.Get(ni)
+			if err != nil {
+				continue
+			}
+			res, err := c.ObjectHead(ctx, prm)
+			if err != nil {
+				var errECInfo *objectSDK.ECInfoError
+				if raw && errors.As(err, &errECInfo) {
+					return statusFound, nil
+				}
+				continue
+			}
+			if err := apistatus.ErrFromStatus(res.Status()); err != nil {
+				continue
+			}
+			return statusFound, nil
+		}
+	}
+
+	if cnr.Value.PlacementPolicy().NumberOfReplicas() == 1 && cnr.Value.PlacementPolicy().ReplicaDescriptor(0).NumberOfObjects() == 1 {
+		return statusFound, nil
+	}
+	return statusQuarantine, nil
+}
+
+func scanStorageEngine(cmd *cobra.Command, batchSize uint32, storageEngine *engine.StorageEngine, ps *processStatus,
+	appCfg *config.Config, cnrCli *cntClient.Client, nmCli *netmap.Client, q *quarantine, pk *ecdsa.PrivateKey, move bool,
+) error {
+	cc := cache.NewSDKClientCache(cache.ClientCacheOpts{
+		DialTimeout:      apiclientconfig.DialTimeout(appCfg),
+		StreamTimeout:    apiclientconfig.StreamTimeout(appCfg),
+		ReconnectTimeout: apiclientconfig.ReconnectTimeout(appCfg),
+		Key:              pk,
+		AllowExternal:    apiclientconfig.AllowExternal(appCfg),
+	})
+	ctx := cmd.Context()
+
+	var cursor *engine.Cursor
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		var prm engine.ListWithCursorPrm
+		prm.WithCursor(cursor)
+		prm.WithCount(batchSize)
+
+		res, err := storageEngine.ListWithCursor(ctx, prm)
+		if err != nil {
+			if errors.Is(err, engine.ErrEndOfListing) {
+				return nil
+			}
+			return fmt.Errorf("list with cursor: %w", err)
+		}
+
+		cursor = res.Cursor()
+		addrList := res.AddressList()
+		eg, egCtx := errgroup.WithContext(ctx)
+		eg.SetLimit(int(batchSize))
+
+		for i := range addrList {
+			addr := addrList[i]
+			eg.Go(func() error {
+				result, err := checkAddr(egCtx, cnrCli, nmCli, cc, addr)
+				if err != nil {
+					return fmt.Errorf("check object %s status: %w", addr.Address, err)
+				}
+				ps.add(result)
+
+				if !move && result == statusQuarantine {
+					cmd.Println(addr)
+					return nil
+				}
+
+				if result == statusQuarantine {
+					return moveToQuarantine(egCtx, storageEngine, q, addr.Address)
+				}
+				return nil
+			})
+		}
+		if err := eg.Wait(); err != nil {
+			return fmt.Errorf("process objects batch: %w", err)
+		}
+	}
+}
+
+func moveToQuarantine(ctx context.Context, storageEngine *engine.StorageEngine, q *quarantine, addr oid.Address) error {
+	var getPrm engine.GetPrm
+	getPrm.WithAddress(addr)
+	res, err := storageEngine.Get(ctx, getPrm)
+	if err != nil {
+		return fmt.Errorf("get object %s from storage engine: %w", addr, err)
+	}
+
+	if err := q.Put(ctx, res.Object()); err != nil {
+		return fmt.Errorf("put object %s to quarantine: %w", addr, err)
+	}
+
+	var delPrm engine.DeletePrm
+	delPrm.WithForceRemoval()
+	delPrm.WithAddress(addr)
+
+	if err = storageEngine.Delete(ctx, delPrm); err != nil {
+		return fmt.Errorf("delete object %s from storage engine: %w", addr, err)
+	}
+	return nil
+}
+
+type processStatus struct {
+	guard       sync.RWMutex
+	statusCount map[status]uint64
+	count       uint64
+}
+
+func (s *processStatus) add(st status) {
+	s.guard.Lock()
+	defer s.guard.Unlock()
+	s.statusCount[st]++
+	s.count++
+}
+
+func (s *processStatus) total() uint64 {
+	s.guard.RLock()
+	defer s.guard.RUnlock()
+	return s.count
+}

cmd/frostfs-adm/internal/modules/maintenance/zombie/storage_engine.go

@@ -0,0 +1,201 @@
+package zombie
+
+import (
+	"context"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	engineconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine"
+	shardconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard"
+	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"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"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"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
+	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	"github.com/panjf2000/ants/v2"
+	"github.com/spf13/cobra"
+	"go.etcd.io/bbolt"
+	"go.uber.org/zap"
+)
+
+func newEngine(cmd *cobra.Command, c *config.Config) *engine.StorageEngine {
+	ngOpts := storageEngineOptions(c)
+	shardOpts := shardOptions(cmd, c)
+	e := engine.New(ngOpts...)
+	for _, opts := range shardOpts {
+		_, err := e.AddShard(cmd.Context(), opts...)
+		commonCmd.ExitOnErr(cmd, "iterate shards from config: %w", err)
+	}
+	commonCmd.ExitOnErr(cmd, "open storage engine: %w", e.Open(cmd.Context()))
+	commonCmd.ExitOnErr(cmd, "init storage engine: %w", e.Init(cmd.Context()))
+	return e
+}
+
+func storageEngineOptions(c *config.Config) []engine.Option {
+	return []engine.Option{
+		engine.WithErrorThreshold(engineconfig.ShardErrorThreshold(c)),
+		engine.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+		engine.WithLowMemoryConsumption(engineconfig.EngineLowMemoryConsumption(c)),
+	}
+}
+
+func shardOptions(cmd *cobra.Command, c *config.Config) [][]shard.Option {
+	var result [][]shard.Option
+	err := engineconfig.IterateShards(c, false, func(sh *shardconfig.Config) error {
+		result = append(result, getShardOpts(cmd, c, sh))
+		return nil
+	})
+	commonCmd.ExitOnErr(cmd, "iterate shards from config: %w", err)
+	return result
+}
+
+func getShardOpts(cmd *cobra.Command, c *config.Config, sh *shardconfig.Config) []shard.Option {
+	wc, wcEnabled := getWriteCacheOpts(sh)
+	return []shard.Option{
+		shard.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+		shard.WithRefillMetabase(sh.RefillMetabase()),
+		shard.WithRefillMetabaseWorkersCount(sh.RefillMetabaseWorkersCount()),
+		shard.WithMode(sh.Mode()),
+		shard.WithBlobStorOptions(getBlobstorOpts(cmd.Context(), sh)...),
+		shard.WithMetaBaseOptions(getMetabaseOpts(sh)...),
+		shard.WithPiloramaOptions(getPiloramaOpts(c, sh)...),
+		shard.WithWriteCache(wcEnabled),
+		shard.WithWriteCacheOptions(wc),
+		shard.WithRemoverBatchSize(sh.GC().RemoverBatchSize()),
+		shard.WithGCRemoverSleepInterval(sh.GC().RemoverSleepInterval()),
+		shard.WithExpiredCollectorBatchSize(sh.GC().ExpiredCollectorBatchSize()),
+		shard.WithExpiredCollectorWorkerCount(sh.GC().ExpiredCollectorWorkerCount()),
+		shard.WithGCWorkerPoolInitializer(func(sz int) util.WorkerPool {
+			pool, err := ants.NewPool(sz)
+			commonCmd.ExitOnErr(cmd, "init GC pool: %w", err)
+			return pool
+		}),
+		shard.WithLimiter(qos.NewNoopLimiter()),
+	}
+}
+
+func getWriteCacheOpts(sh *shardconfig.Config) ([]writecache.Option, bool) {
+	if wc := sh.WriteCache(); wc != nil && wc.Enabled() {
+		var result []writecache.Option
+		result = append(result,
+			writecache.WithPath(wc.Path()),
+			writecache.WithFlushSizeLimit(wc.MaxFlushingObjectsSize()),
+			writecache.WithMaxObjectSize(wc.MaxObjectSize()),
+			writecache.WithFlushWorkersCount(wc.WorkerCount()),
+			writecache.WithMaxCacheSize(wc.SizeLimit()),
+			writecache.WithMaxCacheCount(wc.CountLimit()),
+			writecache.WithNoSync(wc.NoSync()),
+			writecache.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+			writecache.WithQoSLimiter(qos.NewNoopLimiter()),
+		)
+		return result, true
+	}
+	return nil, false
+}
+
+func getPiloramaOpts(c *config.Config, sh *shardconfig.Config) []pilorama.Option {
+	var piloramaOpts []pilorama.Option
+	if config.BoolSafe(c.Sub("tree"), "enabled") {
+		pr := sh.Pilorama()
+		piloramaOpts = append(piloramaOpts,
+			pilorama.WithPath(pr.Path()),
+			pilorama.WithPerm(pr.Perm()),
+			pilorama.WithNoSync(pr.NoSync()),
+			pilorama.WithMaxBatchSize(pr.MaxBatchSize()),
+			pilorama.WithMaxBatchDelay(pr.MaxBatchDelay()),
+		)
+	}
+	return piloramaOpts
+}
+
+func getMetabaseOpts(sh *shardconfig.Config) []meta.Option {
+	return []meta.Option{
+		meta.WithPath(sh.Metabase().Path()),
+		meta.WithPermissions(sh.Metabase().BoltDB().Perm()),
+		meta.WithMaxBatchSize(sh.Metabase().BoltDB().MaxBatchSize()),
+		meta.WithMaxBatchDelay(sh.Metabase().BoltDB().MaxBatchDelay()),
+		meta.WithBoltDBOptions(&bbolt.Options{
+			Timeout: 100 * time.Millisecond,
+		}),
+		meta.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+		meta.WithEpochState(&epochState{}),
+	}
+}
+
+func getBlobstorOpts(ctx context.Context, sh *shardconfig.Config) []blobstor.Option {
+	result := []blobstor.Option{
+		blobstor.WithCompression(sh.Compression()),
+		blobstor.WithStorages(getSubStorages(ctx, sh)),
+		blobstor.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+	}
+
+	return result
+}
+
+func getSubStorages(ctx context.Context, sh *shardconfig.Config) []blobstor.SubStorage {
+	var ss []blobstor.SubStorage
+	for _, storage := range sh.BlobStor().Storages() {
+		switch storage.Type() {
+		case blobovniczatree.Type:
+			sub := blobovniczaconfig.From((*config.Config)(storage))
+			blobTreeOpts := []blobovniczatree.Option{
+				blobovniczatree.WithRootPath(storage.Path()),
+				blobovniczatree.WithPermissions(storage.Perm()),
+				blobovniczatree.WithBlobovniczaSize(sub.Size()),
+				blobovniczatree.WithBlobovniczaShallowDepth(sub.ShallowDepth()),
+				blobovniczatree.WithBlobovniczaShallowWidth(sub.ShallowWidth()),
+				blobovniczatree.WithOpenedCacheSize(sub.OpenedCacheSize()),
+				blobovniczatree.WithOpenedCacheTTL(sub.OpenedCacheTTL()),
+				blobovniczatree.WithOpenedCacheExpInterval(sub.OpenedCacheExpInterval()),
+				blobovniczatree.WithInitWorkerCount(sub.InitWorkerCount()),
+				blobovniczatree.WithWaitBeforeDropDB(sub.RebuildDropTimeout()),
+				blobovniczatree.WithBlobovniczaLogger(logger.NewLoggerWrapper(zap.NewNop())),
+				blobovniczatree.WithBlobovniczaTreeLogger(logger.NewLoggerWrapper(zap.NewNop())),
+				blobovniczatree.WithObjectSizeLimit(sh.SmallSizeLimit()),
+			}
+
+			ss = append(ss, blobstor.SubStorage{
+				Storage: blobovniczatree.NewBlobovniczaTree(ctx, blobTreeOpts...),
+				Policy: func(_ *objectSDK.Object, data []byte) bool {
+					return uint64(len(data)) < sh.SmallSizeLimit()
+				},
+			})
+		case fstree.Type:
+			sub := fstreeconfig.From((*config.Config)(storage))
+			fstreeOpts := []fstree.Option{
+				fstree.WithPath(storage.Path()),
+				fstree.WithPerm(storage.Perm()),
+				fstree.WithDepth(sub.Depth()),
+				fstree.WithNoSync(sub.NoSync()),
+				fstree.WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+			}
+
+			ss = append(ss, blobstor.SubStorage{
+				Storage: fstree.New(fstreeOpts...),
+				Policy: func(_ *objectSDK.Object, _ []byte) bool {
+					return true
+				},
+			})
+		default:
+			// should never happen, that has already
+			// been handled: when the config was read
+		}
+	}
+	return ss
+}
+
+type epochState struct{}
+
+func (epochState) CurrentEpoch() uint64 {
+	return 0
+}

cmd/frostfs-adm/internal/modules/morph/config/config.go

@@ -63,7 +63,7 @@ func dumpNetworkConfig(cmd *cobra.Command, _ []string) error {
 			netmap.MaxObjectSizeConfig, netmap.WithdrawFeeConfig,
 			netmap.MaxECDataCountConfig, netmap.MaxECParityCountConfig:
 			nbuf := make([]byte, 8)
-			copy(nbuf[:], v)
+			copy(nbuf, v)
 			n := binary.LittleEndian.Uint64(nbuf)
 			_, _ = tw.Write(fmt.Appendf(nil, "%s:\t%d (int)\n", k, n))
 		case netmap.HomomorphicHashingDisabledKey, netmap.MaintenanceModeAllowedConfig:

cmd/frostfs-adm/internal/modules/root.go

@@ -5,6 +5,7 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/commonflags"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/config"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/maintenance"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/morph"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/misc"
@@ -41,6 +42,7 @@ func init() {
 	rootCmd.AddCommand(config.RootCmd)
 	rootCmd.AddCommand(morph.RootCmd)
 	rootCmd.AddCommand(metabase.RootCmd)
+	rootCmd.AddCommand(maintenance.RootCmd)
 
 	rootCmd.AddCommand(autocomplete.Command("frostfs-adm"))
 	rootCmd.AddCommand(gendoc.Command(rootCmd, gendoc.Options{}))

cmd/frostfs-cli/modules/bearer/create.go

@@ -44,6 +44,7 @@ is set to current epoch + n.
 
 		_ = viper.BindPFlag(commonflags.WalletPath, ff.Lookup(commonflags.WalletPath))
 		_ = viper.BindPFlag(commonflags.Account, ff.Lookup(commonflags.Account))
+		_ = viper.BindPFlag(commonflags.RPC, ff.Lookup(commonflags.RPC))
 	},
 }
 
@@ -81,7 +82,7 @@ func createToken(cmd *cobra.Command, _ []string) {
 	commonCmd.ExitOnErr(cmd, "can't parse --"+notValidBeforeFlag+" flag: %w", err)
 
 	if iatRelative || expRelative || nvbRelative {
-		endpoint, _ := cmd.Flags().GetString(commonflags.RPC)
+		endpoint := viper.GetString(commonflags.RPC)
 		if len(endpoint) == 0 {
 			commonCmd.ExitOnErr(cmd, "can't fetch current epoch: %w", fmt.Errorf("'%s' flag value must be specified", commonflags.RPC))
 		}

cmd/frostfs-cli/modules/container/policy_playground.go

@@ -40,9 +40,9 @@ func (repl *policyPlaygroundREPL) handleLs(args []string) error {
 	i := 1
 	for id, node := range repl.nodes {
 		var attrs []string
-		node.IterateAttributes(func(k, v string) {
+		for k, v := range node.Attributes() {
 			attrs = append(attrs, fmt.Sprintf("%s:%q", k, v))
-		})
+		}
 		fmt.Fprintf(repl.console, "\t%2d: id=%s attrs={%v}\n", i, id, strings.Join(attrs, " "))
 		i++
 	}
@@ -260,6 +260,28 @@ Example of usage:
 	},
 }
 
+func (repl *policyPlaygroundREPL) handleCommand(args []string) error {
+	if len(args) == 0 {
+		return nil
+	}
+
+	switch args[0] {
+	case "list", "ls":
+		return repl.handleLs(args[1:])
+	case "add":
+		return repl.handleAdd(args[1:])
+	case "load":
+		return repl.handleLoad(args[1:])
+	case "remove", "rm":
+		return repl.handleRemove(args[1:])
+	case "eval":
+		return repl.handleEval(args[1:])
+	case "help":
+		return repl.handleHelp(args[1:])
+	}
+	return fmt.Errorf("unknown command %q. See 'help' for assistance", args[0])
+}
+
 func (repl *policyPlaygroundREPL) run() error {
 	if len(viper.GetString(commonflags.RPC)) > 0 {
 		key := key.GetOrGenerate(repl.cmd)
@@ -277,15 +299,9 @@ func (repl *policyPlaygroundREPL) run() error {
 		}
 	}
 
-	cmdHandlers := map[string]func([]string) error{
+	if len(viper.GetString(netmapConfigPath)) > 0 {
-		"list":   repl.handleLs,
+		err := repl.handleLoad([]string{viper.GetString(netmapConfigPath)})
-		"ls":     repl.handleLs,
+		commonCmd.ExitOnErr(repl.cmd, "load netmap config error: %w", err)
-		"add":    repl.handleAdd,
-		"load":   repl.handleLoad,
-		"remove": repl.handleRemove,
-		"rm":     repl.handleRemove,
-		"eval":   repl.handleEval,
-		"help":   repl.handleHelp,
 	}
 
 	var cfgCompleter []readline.PrefixCompleterInterface
@@ -326,18 +342,9 @@ func (repl *policyPlaygroundREPL) run() error {
 		}
 		exit = false
 
-		parts := strings.Fields(line)
+		if err := repl.handleCommand(strings.Fields(line)); err != nil {
-		if len(parts) == 0 {
-			continue
-		}
-		cmd := parts[0]
-		if handler, exists := cmdHandlers[cmd]; exists {
-			if err := handler(parts[1:]); err != nil {
 			fmt.Fprintf(repl.console, "error: %v\n", err)
 		}
-		} else {
-			fmt.Fprintf(repl.console, "error: unknown command %q\n", cmd)
-		}
 	}
 }
 
@@ -352,6 +359,14 @@ If a wallet and endpoint is provided, the initial netmap data will be loaded fro
 	},
 }
 
+const (
+	netmapConfigPath  = "netmap-config"
+	netmapConfigUsage = "Path to the netmap configuration file"
+)
+
 func initContainerPolicyPlaygroundCmd() {
 	commonflags.Init(policyPlaygroundCmd)
+	policyPlaygroundCmd.Flags().String(netmapConfigPath, "", netmapConfigUsage)
+
+	_ = viper.BindPFlag(netmapConfigPath, policyPlaygroundCmd.Flags().Lookup(netmapConfigPath))
 }

cmd/frostfs-cli/modules/netmap/nodeinfo.go

@@ -62,11 +62,11 @@ func prettyPrintNodeInfo(cmd *cobra.Command, i netmap.NodeInfo) {
 
 	cmd.Println("state:", stateWord)
 
-	netmap.IterateNetworkEndpoints(i, func(s string) {
+	for s := range i.NetworkEndpoints() {
 		cmd.Println("address:", s)
-	})
+	}
-
+
-	i.IterateAttributes(func(key, value string) {
+	for key, value := range i.Attributes() {
-		cmd.Printf("attribute: %s=%s\n", key, value)
+		cmd.Printf("attribute: %s=%s\n", key, value)
-	})
+	}
 }

cmd/frostfs-cli/modules/object/lock.go

@@ -18,6 +18,7 @@ import (
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 )
 
 // object lock command.
@@ -78,7 +79,7 @@ var objectLockCmd = &cobra.Command{
 			ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
 			defer cancel()
 
-			endpoint, _ := cmd.Flags().GetString(commonflags.RPC)
+			endpoint := viper.GetString(commonflags.RPC)
 
 			currEpoch, err := internalclient.GetCurrentEpoch(ctx, cmd, endpoint)
 			commonCmd.ExitOnErr(cmd, "Request current epoch: %w", err)

cmd/frostfs-cli/modules/object/nodes.go

@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"slices"
 	"sync"
 
 	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
@@ -460,17 +461,11 @@ func createClient(ctx context.Context, cmd *cobra.Command, candidate netmapSDK.N
 	var cli *client.Client
 	var addresses []string
 	if preferInternal, _ := cmd.Flags().GetBool(preferInternalAddressesFlag); preferInternal {
-		candidate.IterateNetworkEndpoints(func(s string) bool {
+		addresses = slices.AppendSeq(addresses, candidate.NetworkEndpoints())
-			addresses = append(addresses, s)
-			return false
-		})
 		addresses = append(addresses, candidate.ExternalAddresses()...)
 	} else {
 		addresses = append(addresses, candidate.ExternalAddresses()...)
-		candidate.IterateNetworkEndpoints(func(s string) bool {
+		addresses = slices.AppendSeq(addresses, candidate.NetworkEndpoints())
-			addresses = append(addresses, s)
-			return false
-		})
 	}
 
 	var lastErr error

cmd/frostfs-cli/modules/object/util.go

@@ -262,13 +262,8 @@ func OpenSessionViaClient(cmd *cobra.Command, dst SessionPrm, cli *client.Client
 		if _, ok := dst.(*internal.DeleteObjectPrm); ok {
 			common.PrintVerbose(cmd, "Collecting relatives of the removal object...")
 
-			rels := collectObjectRelatives(cmd, cli, cnr, *obj)
+			objs = collectObjectRelatives(cmd, cli, cnr, *obj)
-
+			objs = append(objs, *obj)
-			if len(rels) == 0 {
-				objs = []oid.ID{*obj}
-			} else {
-				objs = append(rels, *obj)
-			}
 		}
 	}
 

cmd/frostfs-ir/config.go

@@ -4,12 +4,14 @@ import (
 	"context"
 	"os"
 	"os/signal"
+	"strconv"
 	"syscall"
 
 	configViper "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common/config"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	control "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control/ir"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	"github.com/spf13/cast"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 )
@@ -44,11 +46,30 @@ func reloadConfig() error {
 	if err != nil {
 		return err
 	}
-	log.Reload(logPrm)
+	err = logPrm.SetTags(loggerTags())
+	if err != nil {
+		return err
+	}
+	logger.UpdateLevelForTags(logPrm)
 
 	return nil
 }
 
+func loggerTags() [][]string {
+	var res [][]string
+	for i := 0; ; i++ {
+		var item []string
+		index := strconv.FormatInt(int64(i), 10)
+		names := cast.ToString(cfg.Get("logger.tags." + index + ".names"))
+		if names == "" {
+			break
+		}
+		item = append(item, names, cast.ToString(cfg.Get("logger.tags."+index+".level")))
+		res = append(res, item)
+	}
+	return res
+}
+
 func watchForSignal(ctx context.Context, cancel func()) {
 	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)

cmd/frostfs-ir/main.go

@@ -80,10 +80,14 @@ func main() {
 	exitErr(err)
 	logPrm.SamplingHook = metrics.LogMetrics().GetSamplingHook()
 	logPrm.PrependTimestamp = cfg.GetBool("logger.timestamp")
+	err = logPrm.SetTags(loggerTags())
+	exitErr(err)
 
 	log, err = logger.NewLogger(logPrm)
 	exitErr(err)
 
+	logger.UpdateLevelForTags(logPrm)
+
 	ctx, cancel := context.WithCancel(context.Background())
 
 	pprofCmp = newPprofComponent()

cmd/frostfs-lens/internal/schema/writecache/parsers.go

@@ -57,7 +57,7 @@ func DefaultRecordParser(key, value []byte) (common.SchemaEntry, common.Parser,
 	r.addr.SetContainer(cnr)
 	r.addr.SetObject(obj)
 
-	r.data = value[:]
+	r.data = value
 
 	return &r, nil, nil
 }

cmd/frostfs-lens/internal/tui/ui.go

@@ -460,11 +460,11 @@ func (ui *UI) handleInputOnSearching(event *tcell.EventKey) {
 			return
 		}
 
-		switch ui.mountedPage.(type) {
+		switch v := ui.mountedPage.(type) {
 		case *BucketsView:
 			ui.moveNextPage(NewBucketsView(ui, res))
 		case *RecordsView:
-			bucket := ui.mountedPage.(*RecordsView).bucket
+			bucket := v.bucket
 			ui.moveNextPage(NewRecordsView(ui, bucket, res))
 		}
 

cmd/frostfs-node/cache.go

@@ -235,16 +235,8 @@ func (s *lruNetmapSource) updateCandidates(ctx context.Context, d time.Duration)
 					slices.Compare(n1.ExternalAddresses(), n2.ExternalAddresses()) != 0 {
 					return 1
 				}
-				var ne1 []string
+				ne1 := slices.Collect(n1.NetworkEndpoints())
-				n1.IterateNetworkEndpoints(func(s string) bool {
+				ne2 := slices.Collect(n2.NetworkEndpoints())
-					ne1 = append(ne1, s)
-					return false
-				})
-				var ne2 []string
-				n2.IterateNetworkEndpoints(func(s string) bool {
-					ne2 = append(ne2, s)
-					return false
-				})
 				return slices.Compare(ne1, ne2)
 			})
 			if ret != 0 {
@@ -364,15 +356,9 @@ func getNetMapNodesToUpdate(nm *netmapSDK.NetMap, candidates []netmapSDK.NodeInf
 				}
 
 				nodeEndpoints := make([]string, 0, nm.Nodes()[i].NumberOfNetworkEndpoints())
-				nm.Nodes()[i].IterateNetworkEndpoints(func(s string) bool {
+				nodeEndpoints = slices.AppendSeq(nodeEndpoints, nm.Nodes()[i].NetworkEndpoints())
-					nodeEndpoints = append(nodeEndpoints, s)
-					return false
-				})
 				candidateEndpoints := make([]string, 0, cnd.NumberOfNetworkEndpoints())
-				cnd.IterateNetworkEndpoints(func(s string) bool {
+				candidateEndpoints = slices.AppendSeq(candidateEndpoints, cnd.NetworkEndpoints())
-					candidateEndpoints = append(candidateEndpoints, s)
-					return false
-				})
 				if slices.Compare(nodeEndpoints, candidateEndpoints) != 0 {
 					update = true
 					tmp.endpoints = candidateEndpoints

cmd/frostfs-node/config.go

@@ -40,6 +40,7 @@ import (
 	netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"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/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
@@ -109,6 +110,7 @@ type applicationConfiguration struct {
 		destination string
 		timestamp   bool
 		options     []zap.Option
+		tags        [][]string
 	}
 
 	ObjectCfg struct {
@@ -127,12 +129,9 @@ type applicationConfiguration struct {
 }
 
 type shardCfg struct {
-	compress                         bool
+	compression compression.Config
-	estimateCompressibility          bool
-	estimateCompressibilityThreshold float64
 
 	smallSizeObjectLimit       uint64
-	uncompressableContentType  []string
 	refillMetabase             bool
 	refillMetabaseWorkersCount int
 	mode                       shardmode.Mode
@@ -241,19 +240,21 @@ func (a *applicationConfiguration) readConfig(c *config.Config) error {
 		})}
 	}
 	a.LoggerCfg.options = opts
+	a.LoggerCfg.tags = loggerconfig.Tags(c)
 
 	// Object
 
 	a.ObjectCfg.tombstoneLifetime = objectconfig.TombstoneLifetime(c)
-	var pm []placement.Metric
+	locodeDBPath := nodeconfig.LocodeDBPath(c)
-	for _, raw := range objectconfig.Get(c).Priority() {
+	parser, err := placement.NewMetricsParser(locodeDBPath)
-		m, err := placement.ParseMetric(raw)
 	if err != nil {
-			return err
+		return fmt.Errorf("metrics parser creation: %w", err)
 	}
-		pm = append(pm, m)
+	m, err := parser.ParseMetrics(objectconfig.Get(c).Priority())
+	if err != nil {
+		return fmt.Errorf("parse metrics: %w", err)
 	}
-	a.ObjectCfg.priorityMetrics = pm
+	a.ObjectCfg.priorityMetrics = m
 
 	// Storage Engine
 
@@ -269,10 +270,7 @@ func (a *applicationConfiguration) updateShardConfig(c *config.Config, source *s
 	target.refillMetabase = source.RefillMetabase()
 	target.refillMetabaseWorkersCount = source.RefillMetabaseWorkersCount()
 	target.mode = source.Mode()
-	target.compress = source.Compress()
+	target.compression = source.Compression()
-	target.estimateCompressibility = source.EstimateCompressibility()
-	target.estimateCompressibilityThreshold = source.EstimateCompressibilityThreshold()
-	target.uncompressableContentType = source.UncompressableContentTypes()
 	target.smallSizeObjectLimit = source.SmallSizeLimit()
 
 	a.setShardWriteCacheConfig(&target, source)
@@ -383,14 +381,11 @@ func (a *applicationConfiguration) setGCConfig(target *shardCfg, source *shardco
 }
 
 func (a *applicationConfiguration) setLimiter(target *shardCfg, source *shardconfig.Config) error {
-	limitsConfig := source.Limits()
+	limitsConfig := source.Limits().ToConfig()
 	limiter, err := qos.NewLimiter(limitsConfig)
 	if err != nil {
 		return err
 	}
-	if target.limiter != nil {
-		target.limiter.Close()
-	}
 	target.limiter = limiter
 	return nil
 }
@@ -727,6 +722,7 @@ func initCfg(appCfg *config.Config) *cfg {
 	logPrm.SamplingHook = c.metricsCollector.LogMetrics().GetSamplingHook()
 	log, err := logger.NewLogger(logPrm)
 	fatalOnErr(err)
+	logger.UpdateLevelForTags(logPrm)
 
 	c.internals = initInternals(appCfg, log)
 
@@ -895,7 +891,7 @@ func (c *cfg) engineOpts() []engine.Option {
 
 	opts = append(opts,
 		engine.WithErrorThreshold(c.EngineCfg.errorThreshold),
-		engine.WithLogger(c.log),
+		engine.WithLogger(c.log.WithTag(logger.TagEngine)),
 		engine.WithLowMemoryConsumption(c.EngineCfg.lowMem),
 	)
 
@@ -932,7 +928,7 @@ func (c *cfg) getWriteCacheOpts(shCfg shardCfg) []writecache.Option {
 			writecache.WithMaxCacheSize(wcRead.sizeLimit),
 			writecache.WithMaxCacheCount(wcRead.countLimit),
 			writecache.WithNoSync(wcRead.noSync),
-			writecache.WithLogger(c.log),
+			writecache.WithLogger(c.log.WithTag(logger.TagWriteCache)),
 			writecache.WithQoSLimiter(shCfg.limiter),
 		)
 	}
@@ -972,7 +968,8 @@ func (c *cfg) getSubstorageOpts(ctx context.Context, shCfg shardCfg) []blobstor.
 				blobovniczatree.WithOpenedCacheExpInterval(sRead.openedCacheExpInterval),
 				blobovniczatree.WithInitWorkerCount(sRead.initWorkerCount),
 				blobovniczatree.WithWaitBeforeDropDB(sRead.rebuildDropTimeout),
-				blobovniczatree.WithLogger(c.log),
+				blobovniczatree.WithBlobovniczaLogger(c.log.WithTag(logger.TagBlobovnicza)),
+				blobovniczatree.WithBlobovniczaTreeLogger(c.log.WithTag(logger.TagBlobovniczaTree)),
 				blobovniczatree.WithObjectSizeLimit(shCfg.smallSizeObjectLimit),
 			}
 
@@ -995,7 +992,7 @@ func (c *cfg) getSubstorageOpts(ctx context.Context, shCfg shardCfg) []blobstor.
 				fstree.WithPerm(sRead.perm),
 				fstree.WithDepth(sRead.depth),
 				fstree.WithNoSync(sRead.noSync),
-				fstree.WithLogger(c.log),
+				fstree.WithLogger(c.log.WithTag(logger.TagFSTree)),
 			}
 			if c.metricsCollector != nil {
 				fstreeOpts = append(fstreeOpts,
@@ -1025,12 +1022,9 @@ func (c *cfg) getShardOpts(ctx context.Context, shCfg shardCfg) shardOptsWithID
 	ss := c.getSubstorageOpts(ctx, shCfg)
 
 	blobstoreOpts := []blobstor.Option{
-		blobstor.WithCompressObjects(shCfg.compress),
+		blobstor.WithCompression(shCfg.compression),
-		blobstor.WithUncompressableContentTypes(shCfg.uncompressableContentType),
-		blobstor.WithCompressibilityEstimate(shCfg.estimateCompressibility),
-		blobstor.WithCompressibilityEstimateThreshold(shCfg.estimateCompressibilityThreshold),
 		blobstor.WithStorages(ss),
-		blobstor.WithLogger(c.log),
+		blobstor.WithLogger(c.log.WithTag(logger.TagBlobstor)),
 	}
 	if c.metricsCollector != nil {
 		blobstoreOpts = append(blobstoreOpts, blobstor.WithMetrics(lsmetrics.NewBlobstoreMetrics(c.metricsCollector.Blobstore())))
@@ -1055,7 +1049,7 @@ func (c *cfg) getShardOpts(ctx context.Context, shCfg shardCfg) shardOptsWithID
 	var sh shardOptsWithID
 	sh.configID = shCfg.id()
 	sh.shOpts = []shard.Option{
-		shard.WithLogger(c.log),
+		shard.WithLogger(c.log.WithTag(logger.TagShard)),
 		shard.WithRefillMetabase(shCfg.refillMetabase),
 		shard.WithRefillMetabaseWorkersCount(shCfg.refillMetabaseWorkersCount),
 		shard.WithMode(shCfg.mode),
@@ -1094,6 +1088,11 @@ func (c *cfg) loggerPrm() (logger.Prm, error) {
 	}
 	prm.PrependTimestamp = c.LoggerCfg.timestamp
 	prm.Options = c.LoggerCfg.options
+	err = prm.SetTags(c.LoggerCfg.tags)
+	if err != nil {
+		// not expected since validation should be performed before
+		return logger.Prm{}, errors.New("incorrect allowed tags format: " + c.LoggerCfg.destination)
+	}
 
 	return prm, nil
 }
@@ -1381,7 +1380,7 @@ func (c *cfg) getComponents(ctx context.Context) []dCmp {
 		if err != nil {
 			return err
 		}
-		c.log.Reload(prm)
+		logger.UpdateLevelForTags(prm)
 		return nil
 	}})
 	components = append(components, dCmp{"runtime", func() error {

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

@@ -11,10 +11,11 @@ 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"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 )
@@ -100,10 +101,11 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, 100, meta.BoltDB().MaxBatchSize())
 				require.Equal(t, 10*time.Millisecond, meta.BoltDB().MaxBatchDelay())
 
-				require.Equal(t, true, sc.Compress())
+				require.Equal(t, true, sc.Compression().Enabled)
-				require.Equal(t, []string{"audio/*", "video/*"}, sc.UncompressableContentTypes())
+				require.Equal(t, compression.LevelFastest, sc.Compression().Level)
-				require.Equal(t, true, sc.EstimateCompressibility())
+				require.Equal(t, []string{"audio/*", "video/*"}, sc.Compression().UncompressableContentTypes)
-				require.Equal(t, float64(0.7), sc.EstimateCompressibilityThreshold())
+				require.Equal(t, true, sc.Compression().EstimateCompressibility)
+				require.Equal(t, float64(0.7), sc.Compression().EstimateCompressibilityThreshold)
 				require.EqualValues(t, 102400, sc.SmallSizeLimit())
 
 				require.Equal(t, 2, len(ss))
@@ -135,8 +137,8 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, mode.ReadOnly, sc.Mode())
 				require.Equal(t, 100, sc.RefillMetabaseWorkersCount())
 
-				readLimits := limits.Read()
+				readLimits := limits.ToConfig().Read
-				writeLimits := limits.Write()
+				writeLimits := limits.ToConfig().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)
@@ -144,7 +146,7 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, int64(1_000), writeLimits.MaxRunningOps)
 				require.Equal(t, int64(100), writeLimits.MaxWaitingOps)
 				require.ElementsMatch(t, readLimits.Tags,
-					[]limitsconfig.IOTagConfig{
+					[]qos.IOTagConfig{
 						{
 							Tag:         "internal",
 							Weight:      toPtr(20),
@@ -173,9 +175,14 @@ func TestEngineSection(t *testing.T) {
 							LimitOps:   toPtr(25000),
 							Prohibited: true,
 						},
+						{
+							Tag:      "treesync",
+							Weight:   toPtr(5),
+							LimitOps: toPtr(25),
+						},
 					})
 				require.ElementsMatch(t, writeLimits.Tags,
-					[]limitsconfig.IOTagConfig{
+					[]qos.IOTagConfig{
 						{
 							Tag:         "internal",
 							Weight:      toPtr(200),
@@ -203,6 +210,11 @@ func TestEngineSection(t *testing.T) {
 							Weight:   toPtr(50),
 							LimitOps: toPtr(2500),
 						},
+						{
+							Tag:      "treesync",
+							Weight:   toPtr(50),
+							LimitOps: toPtr(100),
+						},
 					})
 			case 1:
 				require.Equal(t, "tmp/1/blob/pilorama.db", pl.Path())
@@ -226,8 +238,9 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, 200, meta.BoltDB().MaxBatchSize())
 				require.Equal(t, 20*time.Millisecond, meta.BoltDB().MaxBatchDelay())
 
-				require.Equal(t, false, sc.Compress())
+				require.Equal(t, false, sc.Compression().Enabled)
-				require.Equal(t, []string(nil), sc.UncompressableContentTypes())
+				require.Equal(t, compression.LevelDefault, sc.Compression().Level)
+				require.Equal(t, []string(nil), sc.Compression().UncompressableContentTypes)
 				require.EqualValues(t, 102400, sc.SmallSizeLimit())
 
 				require.Equal(t, 2, len(ss))
@@ -259,14 +272,14 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, mode.ReadWrite, sc.Mode())
 				require.Equal(t, shardconfig.RefillMetabaseWorkersCountDefault, sc.RefillMetabaseWorkersCount())
 
-				readLimits := limits.Read()
+				readLimits := limits.ToConfig().Read
-				writeLimits := limits.Write()
+				writeLimits := limits.ToConfig().Write
-				require.Equal(t, limitsconfig.DefaultIdleTimeout, readLimits.IdleTimeout)
+				require.Equal(t, qos.DefaultIdleTimeout, readLimits.IdleTimeout)
-				require.Equal(t, limitsconfig.NoLimit, readLimits.MaxRunningOps)
+				require.Equal(t, qos.NoLimit, readLimits.MaxRunningOps)
-				require.Equal(t, limitsconfig.NoLimit, readLimits.MaxWaitingOps)
+				require.Equal(t, qos.NoLimit, readLimits.MaxWaitingOps)
-				require.Equal(t, limitsconfig.DefaultIdleTimeout, writeLimits.IdleTimeout)
+				require.Equal(t, qos.DefaultIdleTimeout, writeLimits.IdleTimeout)
-				require.Equal(t, limitsconfig.NoLimit, writeLimits.MaxRunningOps)
+				require.Equal(t, qos.NoLimit, writeLimits.MaxRunningOps)
-				require.Equal(t, limitsconfig.NoLimit, writeLimits.MaxWaitingOps)
+				require.Equal(t, qos.NoLimit, writeLimits.MaxWaitingOps)
 				require.Equal(t, 0, len(readLimits.Tags))
 				require.Equal(t, 0, len(writeLimits.Tags))
 			}

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

@@ -8,6 +8,7 @@ import (
 	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"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 )
 
@@ -27,42 +28,27 @@ func From(c *config.Config) *Config {
 	return (*Config)(c)
 }
 
-// Compress returns the value of "compress" config parameter.
+func (x *Config) Compression() compression.Config {
-//
+	cc := (*config.Config)(x).Sub("compression")
-// Returns false if the value is not a valid bool.
+	if cc == nil {
-func (x *Config) Compress() bool {
+		return compression.Config{}
-	return config.BoolSafe(
-		(*config.Config)(x),
-		"compress",
-	)
 	}
-
+	return compression.Config{
-// UncompressableContentTypes returns the value of "compress_skip_content_types" config parameter.
+		Enabled:                          config.BoolSafe(cc, "enabled"),
-//
+		UncompressableContentTypes:       config.StringSliceSafe(cc, "exclude_content_types"),
-// Returns nil if a the value is missing or is invalid.
+		Level:                            compression.Level(config.StringSafe(cc, "level")),
-func (x *Config) UncompressableContentTypes() []string {
+		EstimateCompressibility:          config.BoolSafe(cc, "estimate_compressibility"),
-	return config.StringSliceSafe(
+		EstimateCompressibilityThreshold: estimateCompressibilityThreshold(cc),
-		(*config.Config)(x),
-		"compression_exclude_content_types")
 	}
-
-// EstimateCompressibility returns the value of "estimate_compressibility" config parameter.
-//
-// Returns false if the value is not a valid bool.
-func (x *Config) EstimateCompressibility() bool {
-	return config.BoolSafe(
-		(*config.Config)(x),
-		"compression_estimate_compressibility",
-	)
 }
 
 // EstimateCompressibilityThreshold returns the value of "estimate_compressibility_threshold" config parameter.
 //
 // Returns EstimateCompressibilityThresholdDefault if the value is not defined, not valid float or not in range [0.0; 1.0].
-func (x *Config) EstimateCompressibilityThreshold() float64 {
+func estimateCompressibilityThreshold(c *config.Config) float64 {
 	v := config.FloatOrDefault(
-		(*config.Config)(x),
+		c,
-		"compression_estimate_compressibility_threshold",
+		"estimate_compressibility_threshold",
 		EstimateCompressibilityThresholdDefault)
 	if v < 0.0 || v > 1.0 {
 		return EstimateCompressibilityThresholdDefault

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

@@ -1,19 +1,13 @@
 package limits
 
 import (
-	"math"
 	"strconv"
-	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"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)
@@ -23,36 +17,43 @@ func From(c *config.Config) *Config {
 // which provides access to Shard's limits configurations.
 type Config config.Config
 
-// Read returns the value of "read" limits config section.
+func (x *Config) ToConfig() qos.LimiterConfig {
-func (x *Config) Read() OpConfig {
+	result := qos.LimiterConfig{
+		Read:  x.read(),
+		Write: x.write(),
+	}
+	panicOnErr(result.Validate())
+	return result
+}
+
+func (x *Config) read() qos.OpConfig {
 	return x.parse("read")
 }
 
-// Write returns the value of "write" limits config section.
+func (x *Config) write() qos.OpConfig {
-func (x *Config) Write() OpConfig {
 	return x.parse("write")
 }
 
-func (x *Config) parse(sub string) OpConfig {
+func (x *Config) parse(sub string) qos.OpConfig {
 	c := (*config.Config)(x).Sub(sub)
-	var result OpConfig
+	var result qos.OpConfig
 
 	if s := config.Int(c, "max_waiting_ops"); s > 0 {
 		result.MaxWaitingOps = s
 	} else {
-		result.MaxWaitingOps = NoLimit
+		result.MaxWaitingOps = qos.NoLimit
 	}
 
 	if s := config.Int(c, "max_running_ops"); s > 0 {
 		result.MaxRunningOps = s
 	} else {
-		result.MaxRunningOps = NoLimit
+		result.MaxRunningOps = qos.NoLimit
 	}
 
 	if s := config.DurationSafe(c, "idle_timeout"); s > 0 {
 		result.IdleTimeout = s
 	} else {
-		result.IdleTimeout = DefaultIdleTimeout
+		result.IdleTimeout = qos.DefaultIdleTimeout
 	}
 
 	result.Tags = tags(c)
@@ -60,43 +61,16 @@ func (x *Config) parse(sub string) OpConfig {
 	return result
 }
 
-type OpConfig struct {
+func tags(c *config.Config) []qos.IOTagConfig {
-	// 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
-	Prohibited  bool
-}
-
-func tags(c *config.Config) []IOTagConfig {
 	c = c.Sub("tags")
-	var result []IOTagConfig
+	var result []qos.IOTagConfig
 	for i := 0; ; i++ {
 		tag := config.String(c, strconv.Itoa(i)+".tag")
 		if tag == "" {
 			return result
 		}
 
-		var tagConfig IOTagConfig
+		var tagConfig qos.IOTagConfig
 		tagConfig.Tag = tag
 
 		v := c.Value(strconv.Itoa(i) + ".weight")

cmd/frostfs-node/config/logger/config.go

@@ -2,6 +2,7 @@ package loggerconfig
 
 import (
 	"os"
+	"strconv"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
@@ -60,6 +61,21 @@ func Timestamp(c *config.Config) bool {
 	return config.BoolSafe(c.Sub(subsection), "timestamp")
 }
 
+// Tags returns the value of "tags" config parameter from "logger" section.
+func Tags(c *config.Config) [][]string {
+	var res [][]string
+	sub := c.Sub(subsection).Sub("tags")
+	for i := 0; ; i++ {
+		s := sub.Sub(strconv.FormatInt(int64(i), 10))
+		names := config.StringSafe(s, "names")
+		if names == "" {
+			break
+		}
+		res = append(res, []string{names, config.StringSafe(s, "level")})
+	}
+	return res
+}
+
 // ToLokiConfig extracts loki config.
 func ToLokiConfig(c *config.Config) loki.Config {
 	hostname, _ := os.Hostname()

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

@@ -22,6 +22,9 @@ func TestLoggerSection_Level(t *testing.T) {
 		require.Equal(t, "debug", loggerconfig.Level(c))
 		require.Equal(t, "journald", loggerconfig.Destination(c))
 		require.Equal(t, true, loggerconfig.Timestamp(c))
+		tags := loggerconfig.Tags(c)
+		require.Equal(t, "main, morph", tags[0][0])
+		require.Equal(t, "debug", tags[0][1])
 	}
 
 	configtest.ForEachFileType(path, fileConfigTest)

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

@@ -3,7 +3,9 @@ package nodeconfig
 import (
 	"fmt"
 	"io/fs"
+	"iter"
 	"os"
+	"slices"
 	"strconv"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
@@ -88,12 +90,8 @@ func Wallet(c *config.Config) *keys.PrivateKey {
 
 type stringAddressGroup []string
 
-func (x stringAddressGroup) IterateAddresses(f func(string) bool) {
+func (x stringAddressGroup) Addresses() iter.Seq[string] {
-	for i := range x {
+	return slices.Values(x)
-		if f(x[i]) {
-			break
-		}
-	}
 }
 
 func (x stringAddressGroup) NumberOfAddresses() int {
@@ -217,3 +215,8 @@ func (l PersistentPolicyRulesConfig) NoSync() bool {
 func CompatibilityMode(c *config.Config) bool {
 	return config.BoolSafe(c.Sub(subsection), "kludge_compatibility_mode")
 }
+
+// LocodeDBPath returns path to LOCODE database.
+func LocodeDBPath(c *config.Config) string {
+	return config.String(c.Sub(subsection), "locode_db_path")
+}

cmd/frostfs-node/morph.go

@@ -14,6 +14,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event"
 	netmapEvent "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/subscriber"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/rand"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/state"
@@ -84,7 +85,7 @@ func initMorphClient(ctx context.Context, c *cfg) {
 	cli, err := client.New(ctx,
 		c.key,
 		client.WithDialTimeout(morphconfig.DialTimeout(c.appCfg)),
-		client.WithLogger(c.log),
+		client.WithLogger(c.log.WithTag(logger.TagMorph)),
 		client.WithMetrics(c.metricsCollector.MorphClientMetrics()),
 		client.WithEndpoints(addresses...),
 		client.WithConnLostCallback(func() {
@@ -165,6 +166,7 @@ func listenMorphNotifications(ctx context.Context, c *cfg) {
 		err  error
 		subs subscriber.Subscriber
 	)
+	log := c.log.WithTag(logger.TagMorph)
 
 	fromSideChainBlock, err := c.persistate.UInt32(persistateSideChainLastBlockKey)
 	if err != nil {
@@ -173,14 +175,14 @@ func listenMorphNotifications(ctx context.Context, c *cfg) {
 	}
 
 	subs, err = subscriber.New(ctx, &subscriber.Params{
-		Log:            c.log,
+		Log:            log,
 		StartFromBlock: fromSideChainBlock,
 		Client:         c.cfgMorph.client,
 	})
 	fatalOnErr(err)
 
 	lis, err := event.NewListener(event.ListenerParams{
-		Logger:     c.log,
+		Logger:     log,
 		Subscriber: subs,
 	})
 	fatalOnErr(err)
@@ -198,7 +200,7 @@ func listenMorphNotifications(ctx context.Context, c *cfg) {
 	setNetmapNotificationParser(c, newEpochNotification, func(src *state.ContainedNotificationEvent) (event.Event, error) {
 		res, err := netmapEvent.ParseNewEpoch(src)
 		if err == nil {
-			c.log.Info(ctx, logs.FrostFSNodeNewEpochEventFromSidechain,
+			log.Info(ctx, logs.FrostFSNodeNewEpochEventFromSidechain,
 				zap.Uint64("number", res.(netmapEvent.NewEpoch).EpochNumber()),
 			)
 		}
@@ -209,11 +211,11 @@ func listenMorphNotifications(ctx context.Context, c *cfg) {
 	registerNotificationHandlers(c.cfgContainer.scriptHash, lis, c.cfgContainer.parsers, c.cfgContainer.subscribers)
 
 	registerBlockHandler(lis, func(ctx context.Context, block *block.Block) {
-		c.log.Debug(ctx, logs.FrostFSNodeNewBlock, zap.Uint32("index", block.Index))
+		log.Debug(ctx, logs.FrostFSNodeNewBlock, zap.Uint32("index", block.Index))
 
 		err = c.persistate.SetUInt32(persistateSideChainLastBlockKey, block.Index)
 		if err != nil {
-			c.log.Warn(ctx, logs.FrostFSNodeCantUpdatePersistentState,
+			log.Warn(ctx, logs.FrostFSNodeCantUpdatePersistentState,
 				zap.String("chain", "side"),
 				zap.Uint32("block_index", block.Index))
 		}

cmd/frostfs-node/netmap.go

@@ -8,6 +8,7 @@ import (
 	"net"
 	"sync/atomic"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/metrics"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
@@ -104,9 +105,7 @@ func (s *networkState) getNodeInfo() (res netmapSDK.NodeInfo, ok bool) {
 	v := s.nodeInfo.Load()
 	if v != nil {
 		res, ok = v.(netmapSDK.NodeInfo)
-		if !ok {
+		assert.True(ok, fmt.Sprintf("unexpected value in atomic node info state: %T", v))
-			panic(fmt.Sprintf("unexpected value in atomic node info state: %T", v))
-		}
 	}
 
 	return
@@ -124,7 +123,11 @@ func nodeKeyFromNetmap(c *cfg) []byte {
 func (c *cfg) iterateNetworkAddresses(f func(string) bool) {
 	ni, ok := c.cfgNetmap.state.getNodeInfo()
 	if ok {
-		ni.IterateNetworkEndpoints(f)
+		for s := range ni.NetworkEndpoints() {
+			if f(s) {
+				return
+			}
+		}
 	}
 }
 

cmd/frostfs-node/object.go

@@ -31,6 +31,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/policer"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/replicator"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/object"
 	objectGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/object/grpc"
 	netmapSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
@@ -217,9 +218,8 @@ func addPolicer(c *cfg, keyStorage *util.KeyStorage, clientConstructor *cache.Cl
 	}
 
 	remoteReader := objectService.NewRemoteReader(keyStorage, clientConstructor)
-
 	pol := policer.New(
-		policer.WithLogger(c.log),
+		policer.WithLogger(c.log.WithTag(logger.TagPolicer)),
 		policer.WithKeySpaceIterator(&keySpaceIterator{ng: ls}),
 		policer.WithBuryFunc(buryFn),
 		policer.WithContainerSource(c.cfgObject.cnrSource),
@@ -291,7 +291,7 @@ func createReplicator(c *cfg, keyStorage *util.KeyStorage, cache *cache.ClientCa
 	ls := c.cfgObject.cfgLocalStorage.localStorage
 
 	return replicator.New(
-		replicator.WithLogger(c.log),
+		replicator.WithLogger(c.log.WithTag(logger.TagReplicator)),
 		replicator.WithPutTimeout(
 			replicatorconfig.PutTimeout(c.appCfg),
 		),
@@ -348,7 +348,7 @@ func createSearchSvc(c *cfg, keyStorage *util.KeyStorage, traverseGen *util.Trav
 		c.netMapSource,
 		keyStorage,
 		containerSource,
-		searchsvc.WithLogger(c.log),
+		searchsvc.WithLogger(c.log.WithTag(logger.TagSearchSvc)),
 	)
 }
 
@@ -374,7 +374,7 @@ func createGetService(c *cfg, keyStorage *util.KeyStorage, traverseGen *util.Tra
 		),
 		coreConstructor,
 		containerSource,
-		getsvc.WithLogger(c.log))
+		getsvc.WithLogger(c.log.WithTag(logger.TagGetSvc)))
 }
 
 func createGetServiceV2(c *cfg, sGet *getsvc.Service, keyStorage *util.KeyStorage) *getsvcV2.Service {
@@ -385,7 +385,7 @@ func createGetServiceV2(c *cfg, sGet *getsvc.Service, keyStorage *util.KeyStorag
 		c.netMapSource,
 		c,
 		c.cfgObject.cnrSource,
-		getsvcV2.WithLogger(c.log),
+		getsvcV2.WithLogger(c.log.WithTag(logger.TagGetSvc)),
 	)
 }
 
@@ -402,7 +402,7 @@ func createDeleteService(c *cfg, keyStorage *util.KeyStorage, sGet *getsvc.Servi
 			cfg: c,
 		},
 		keyStorage,
-		deletesvc.WithLogger(c.log),
+		deletesvc.WithLogger(c.log.WithTag(logger.TagDeleteSvc)),
 	)
 }
 

cmd/frostfs-node/session.go

@@ -14,6 +14,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/session/storage"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/session/storage/persistent"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/session/storage/temporary"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
 	sessionGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/grpc"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
@@ -55,7 +56,7 @@ func initSessionService(c *cfg) {
 	server := sessionTransportGRPC.New(
 		sessionSvc.NewSignService(
 			&c.key.PrivateKey,
-			sessionSvc.NewExecutionService(c.privateTokenStore, c.respSvc, c.log),
+			sessionSvc.NewExecutionService(c.privateTokenStore, c.respSvc, c.log.WithTag(logger.TagSessionSvc)),
 		),
 	)
 

cmd/frostfs-node/tree.go

@@ -14,6 +14,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event"
 	containerEvent "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/tree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
@@ -56,7 +57,7 @@ func initTreeService(c *cfg) {
 		tree.WithFrostfsidSubjectProvider(c.frostfsidClient),
 		tree.WithNetmapSource(c.netMapSource),
 		tree.WithPrivateKey(&c.key.PrivateKey),
-		tree.WithLogger(c.log),
+		tree.WithLogger(c.log.WithTag(logger.TagTreeSvc)),
 		tree.WithStorage(c.cfgObject.cfgLocalStorage.localStorage),
 		tree.WithContainerCacheSize(treeConfig.CacheSize()),
 		tree.WithReplicationTimeout(treeConfig.ReplicationTimeout()),

cmd/frostfs-node/validate.go

@@ -30,6 +30,11 @@ func validateConfig(c *config.Config) error {
 		return fmt.Errorf("invalid logger destination: %w", err)
 	}
 
+	err = loggerPrm.SetTags(loggerconfig.Tags(c))
+	if err != nil {
+		return fmt.Errorf("invalid list of allowed tags: %w", err)
+	}
+
 	// shard configuration validation
 
 	shardNum := 0

cmd/internal/common/exit.go

@@ -51,8 +51,13 @@ func ExitOnErr(cmd *cobra.Command, errFmt string, err error) {
 	}
 
 	cmd.PrintErrln(err)
-	if cmd.PersistentPostRun != nil {
+	for p := cmd; p != nil; p = p.Parent() {
-		cmd.PersistentPostRun(cmd, nil)
+		if p.PersistentPostRun != nil {
+			p.PersistentPostRun(cmd, nil)
+			if !cobra.EnableTraverseRunHooks {
+				break
+			}
+		}
 	}
 	os.Exit(code)
 }

cmd/internal/common/netmap.go

@@ -27,15 +27,15 @@ func PrettyPrintNodeInfo(cmd *cobra.Command, node netmap.NodeInfo,
 
 	cmd.Printf("%sNode %d: %s %s ", indent, index+1, hex.EncodeToString(node.PublicKey()), strState)
 
-	netmap.IterateNetworkEndpoints(node, func(endpoint string) {
+	for endpoint := range node.NetworkEndpoints() {
 		cmd.Printf("%s ", endpoint)
-	})
+	}
 	cmd.Println()
 
 	if !short {
-		node.IterateAttributes(func(key, value string) {
+		for key, value := range node.Attributes() {
 			cmd.Printf("%s\t%s: %s\n", indent, key, value)
-		})
+		}
 	}
 }
 

config/example/ir.env

@@ -1,5 +1,7 @@
 FROSTFS_IR_LOGGER_LEVEL=info
 FROSTFS_IR_LOGGER_TIMESTAMP=true
+FROSTFS_IR_LOGGER_TAGS_0_NAMES="main, morph"
+FROSTFS_IR_LOGGER_TAGS_0_LEVEL="debug"
 
 FROSTFS_IR_WALLET_PATH=/path/to/wallet.json
 FROSTFS_IR_WALLET_ADDRESS=NUHtW3eM6a4mmFCgyyr4rj4wygsTKB88XX

config/example/ir.yaml

@@ -3,6 +3,9 @@
 logger:
   level: info # Logger level: one of "debug", "info" (default), "warn", "error", "dpanic", "panic", "fatal"
   timestamp: true
+  tags:
+    - names: "main, morph" # Possible values: `main`, `morph`, `grpc_svc`, `ir`, `processor`.
+      level: debug
 
 wallet:
   path: /path/to/wallet.json                  # Path to NEP-6 NEO wallet file

config/example/node.env

@@ -1,6 +1,8 @@
 FROSTFS_LOGGER_LEVEL=debug
 FROSTFS_LOGGER_DESTINATION=journald
 FROSTFS_LOGGER_TIMESTAMP=true
+FROSTFS_LOGGER_TAGS_0_NAMES="main, morph"
+FROSTFS_LOGGER_TAGS_0_LEVEL="debug"
 
 FROSTFS_PPROF_ENABLED=true
 FROSTFS_PPROF_ADDRESS=localhost:6060
@@ -23,6 +25,7 @@ FROSTFS_NODE_ATTRIBUTE_1="UN-LOCODE:RU MSK"
 FROSTFS_NODE_RELAY=true
 FROSTFS_NODE_PERSISTENT_SESSIONS_PATH=/sessions
 FROSTFS_NODE_PERSISTENT_STATE_PATH=/state
+FROSTFS_NODE_LOCODE_DB_PATH=/path/to/locode/db
 
 # Tree service section
 FROSTFS_TREE_ENABLED=true
@@ -121,7 +124,8 @@ FROSTFS_STORAGE_SHARD_0_METABASE_PERM=0644
 FROSTFS_STORAGE_SHARD_0_METABASE_MAX_BATCH_SIZE=100
 FROSTFS_STORAGE_SHARD_0_METABASE_MAX_BATCH_DELAY=10ms
 ### Blobstor config
-FROSTFS_STORAGE_SHARD_0_COMPRESS=true
+FROSTFS_STORAGE_SHARD_0_COMPRESSION_ENABLED=true
+FROSTFS_STORAGE_SHARD_0_COMPRESSION_LEVEL=fastest
 FROSTFS_STORAGE_SHARD_0_COMPRESSION_EXCLUDE_CONTENT_TYPES="audio/* video/*"
 FROSTFS_STORAGE_SHARD_0_COMPRESSION_ESTIMATE_COMPRESSIBILITY=true
 FROSTFS_STORAGE_SHARD_0_COMPRESSION_ESTIMATE_COMPRESSIBILITY_THRESHOLD=0.7
@@ -181,6 +185,9 @@ 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_READ_TAGS_4_PROHIBITED=true
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_5_TAG=treesync
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_5_WEIGHT=5
+FROSTFS_STORAGE_SHARD_0_LIMITS_READ_TAGS_5_LIMIT_OPS=25
 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
@@ -198,6 +205,9 @@ 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
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_5_TAG=treesync
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_5_WEIGHT=50
+FROSTFS_STORAGE_SHARD_0_LIMITS_WRITE_TAGS_5_LIMIT_OPS=100
 
 ## 1 shard
 ### Flag to refill Metabase from BlobStor

config/example/node.json

@@ -2,7 +2,13 @@
   "logger": {
     "level": "debug",
     "destination": "journald",
-    "timestamp": true
+    "timestamp": true,
+    "tags": [
+      {
+        "names": "main, morph",
+        "level": "debug"
+      }
+    ]
   },
   "pprof": {
     "enabled": true,
@@ -37,7 +43,8 @@
     },
     "persistent_state": {
       "path": "/state"
-    }
+    },
+    "locode_db_path": "/path/to/locode/db"
   },
   "grpc": {
     "0": {
@@ -182,12 +189,15 @@
           "max_batch_size": 100,
           "max_batch_delay": "10ms"
         },
-        "compress": true,
+        "compression": {
-        "compression_exclude_content_types": [
+          "enabled": true,
+          "level": "fastest",
+          "exclude_content_types": [
             "audio/*", "video/*"
           ],
-        "compression_estimate_compressibility": true,
+          "estimate_compressibility": true,
-        "compression_estimate_compressibility_threshold": 0.7,
+          "estimate_compressibility_threshold": 0.7
+        },
         "small_object_size": 102400,
         "blobstor": [
           {
@@ -254,6 +264,11 @@
                 "weight": 5,
                 "limit_ops": 25000,
                 "prohibited": true
+              },
+              {
+                "tag": "treesync",
+                "weight": 5,
+                "limit_ops": 25
               }
             ]
           },
@@ -288,6 +303,11 @@
                 "tag": "policer",
                 "weight": 50,
                 "limit_ops": 2500
+              },
+              {
+                "tag": "treesync",
+                "weight": 50,
+                "limit_ops": 100
               }
             ]
           }
@@ -311,7 +331,9 @@
           "max_batch_size": 200,
           "max_batch_delay": "20ms"
         },
-        "compress": false,
+        "compression": {
+          "enabled": false
+        },
         "small_object_size": 102400,
         "blobstor": [
           {

config/example/node.yaml

@@ -2,6 +2,9 @@ logger:
   level: debug  # logger level: one of "debug", "info" (default), "warn", "error", "dpanic", "panic", "fatal"
   destination: journald # logger destination: one of "stdout" (default), "journald"
   timestamp: true
+  tags:
+    - names: "main, morph"
+      level: debug
 
 systemdnotify:
   enabled: true
@@ -36,6 +39,7 @@ node:
     path: /sessions  # path to persistent session tokens file of Storage node (default: in-memory sessions)
   persistent_state:
     path: /state  # path to persistent state file of Storage node
+  "locode_db_path": "/path/to/locode/db"
 
 grpc:
   - endpoint: s01.frostfs.devenv:8080  # endpoint for gRPC server
@@ -159,7 +163,8 @@ storage:
         max_batch_delay: 5ms # maximum delay for a batch of operations to be executed
         max_batch_size: 100 # maximum amount of operations in a single batch
 
-      compress: false  # turn on/off zstd(level 3) compression of stored objects
+      compression:
+        enabled: false # turn on/off zstd compression of stored objects
       small_object_size: 100 kb  # size threshold for "small" objects which are cached in key-value DB, not in FS, bytes
 
       blobstor:
@@ -201,12 +206,14 @@ storage:
         max_batch_size: 100
         max_batch_delay: 10ms
 
-      compress: true  # turn on/off zstd(level 3) compression of stored objects
+      compression:
-      compression_exclude_content_types:
+        enabled: true  # turn on/off zstd compression of stored objects
+        level: fastest
+        exclude_content_types:
           - audio/*
           - video/*
-      compression_estimate_compressibility: true
+        estimate_compressibility: true
-      compression_estimate_compressibility_threshold: 0.7
+        estimate_compressibility_threshold: 0.7
 
       blobstor:
         - type: blobovnicza
@@ -253,6 +260,9 @@ storage:
             weight: 5
             limit_ops: 25000
             prohibited: true
+          - tag: treesync
+            weight: 5
+            limit_ops: 25
         write:
           max_running_ops: 1000
           max_waiting_ops: 100
@@ -275,6 +285,9 @@ storage:
           - tag: policer
             weight: 50
             limit_ops: 2500
+          - tag: treesync
+            weight: 50
+            limit_ops: 100
 
     1:
       writecache:

docs/storage-node-configuration.md

@@ -13,7 +13,8 @@ There are some custom types used for brevity:
 # Structure
 
 | Section      | Description                                             |
-|------------------------|---------------------------------------------------------------------|
+|--------------|---------------------------------------------------------|
+| `node`       | [Node parameters](#node-section)                        |
 | `logger`     | [Logging parameters](#logger-section)                   |
 | `pprof`      | [PProf configuration](#pprof-section)                   |
 | `prometheus` | [Prometheus metrics configuration](#prometheus-section) |
@@ -111,11 +112,21 @@ Contains logger parameters.
 ```yaml
 logger:
   level: info
+  tags:
+    - names: "main, morph"
+      level: debug
 ```
 
 | Parameter | Type                                          | Default value | Description                                                                                       |
-|-----------|----------|---------------|---------------------------------------------------------------------------------------------------|
+|-----------|-----------------------------------------------|---------------|---------------------------------------------------------------------------------------------------|
 | `level`   | `string`                                      | `info`        | Logging level.<br/>Possible values:  `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal` |
+| `tags`    | list of [tags descriptions](#tags-subsection) |               | Array of tags description.                                                                        |
+
+## `tags` subsection
+| Parameter | Type     | Default value | Description                                                                                                                                                                                                                                                              |
+|-----------|----------|---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `names`   | `string` |               | List of components divided by `,`.<br/>Possible values: `main`, `morph`, `grpcsvc`, `ir`, `processor`, `engine`, `blobovnicza`, `blobstor`, `fstree`, `gc`, `shard`, `writecache`, `deletesvc`, `getsvc`, `searchsvc`, `sessionsvc`, `treesvc`, `policer`, `replicator`. |
+| `level`   | `string` |               | Logging level for the components from `names`, overrides default logging level.                                                                                                                                                                                          |
 
 # `contracts` section
 Contains override values for FrostFS side-chain contract hashes. Most of the time contract
@@ -185,11 +196,8 @@ Contains configuration for each shard. Keys must be consecutive numbers starting
 The following table describes configuration for each shard.
 
 | Parameter                      | Type                                          | Default value | Description                                                                                               |
-| ------------------------------------------------ | ------------------------------------------- | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| ------------------------------ | --------------------------------------------- | ------------- | --------------------------------------------------------------------------------------------------------- |
-| `compress`                                       | `bool`                                      | `false`       | Flag to enable compression.                                                                                                                                                                                       |
+| `compression`                  | [Compression config](#compression-subsection) |               | Compression config.                                                                                       |
-| `compression_exclude_content_types`              | `[]string`                                  |               | List of content-types to disable compression for. Content-type is taken from `Content-Type` object attribute. Each element can contain a star `*` as a first (last) character, which matches any prefix (suffix). |
-| `compression_estimate_compressibility`           | `bool`                                      | `false`       | If `true`, then noramalized compressibility estimation is used to decide compress data or not.                                                                                                                    |
-| `compression_estimate_compressibility_threshold` | `float`                                     | `0.1`         | Normilized compressibility estimate threshold: data will compress if estimation if greater than this value.                                                                                                       |
 | `mode`                         | `string`                                      | `read-write`  | Shard Mode.<br/>Possible values:  `read-write`, `read-only`, `degraded`, `degraded-read-only`, `disabled` |
 | `resync_metabase`              | `bool`                                        | `false`       | Flag to enable metabase resync on start.                                                                  |
 | `resync_metabase_worker_count` | `int`                                         | `1000`        | Count of concurrent workers to resync metabase.                                                           |
@@ -200,6 +208,29 @@ The following table describes configuration for each shard.
 | `gc`                           | [GC config](#gc-subsection)                   |               | GC configuration.                                                                                         |
 | `limits`                       | [Shard limits config](#limits-subsection)     |               | Shard limits configuration.                                                                               |
 
+### `compression` subsection
+
+Contains compression config.
+
+```yaml
+compression:
+  enabled: true
+  level: smallest_size
+  exclude_content_types:
+    - audio/*
+    - video/*
+  estimate_compressibility: true
+  estimate_compressibility_threshold: 0.7
+```
+
+| Parameter                            | Type       | Default value | Description                                                                                                                                                                                                       |
+| ------------------------------------ | ---------- | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `enabled`                            | `bool`     | `false`       | Flag to enable compression.                                                                                                                                                                                       |
+| `level`                              | `string`   | `optimal`     | Compression level. Available values are `optimal`, `fastest`, `smallest_size`.                                                                                                                                    |
+| `exclude_content_types`              | `[]string` |               | List of content-types to disable compression for. Content-type is taken from `Content-Type` object attribute. Each element can contain a star `*` as a first (last) character, which matches any prefix (suffix). |
+| `estimate_compressibility`           | `bool`     | `false`       | If `true`, then noramalized compressibility estimation is used to decide compress data or not.                                                                                                                    |
+| `estimate_compressibility_threshold` | `float`    | `0.1`         | Normilized compressibility estimate threshold: data will compress if estimation if greater than this value.                                                                                                       |
+
 ### `blobstor` subsection
 
 Contains a list of substorages each with it's own type.
@@ -384,10 +415,11 @@ node:
     path: /sessions
   persistent_state:
     path: /state
+  locode_db_path: "/path/to/locode/db"
 ```
 
 | Parameter             | Type                                                          | Default value | Description                                                                                         |
-|-----------------------|---------------------------------------------------------------|---------------|-------------------------------------------------------------------------|
+|-----------------------|---------------------------------------------------------------|---------------|-----------------------------------------------------------------------------------------------------|
 | `key`                 | `string`                                                      |               | Path to the binary-encoded private key.                                                             |
 | `wallet`              | [Wallet config](#wallet-subsection)                           |               | Wallet configuration. Has no effect if `key` is provided.                                           |
 | `addresses`           | `[]string`                                                    |               | Addresses advertised in the netmap.                                                                 |
@@ -395,6 +427,7 @@ node:
 | `relay`               | `bool`                                                        |               | Enable relay mode.                                                                                  |
 | `persistent_sessions` | [Persistent sessions config](#persistent_sessions-subsection) |               | Persistent session token store configuration.                                                       |
 | `persistent_state`    | [Persistent state config](#persistent_state-subsection)       |               | Persistent state configuration.                                                                     |
+| `locode_db_path`      | `string`                                                      | empty         | Path to UN/LOCODE [database](https://git.frostfs.info/TrueCloudLab/frostfs-locode-db/) for FrostFS. |
 
 ## `wallet` subsection
 N3 wallet configuration.

internal/assert/cond.go

@@ -23,3 +23,7 @@ func NoError(err error, details ...string) {
 		panic(content)
 	}
 }
+
+func Fail(details ...string) {
+	panic(strings.Join(details, " "))
+}

internal/logs/logs.go

@@ -516,4 +516,5 @@ const (
 	FailedToValidateIncomingIOTag                                        = "failed to validate incoming IO tag, replaced with `client`"
 	WriteCacheFailedToAcquireRPSQuota                                    = "writecache failed to acquire RPS quota to flush object"
 	FailedToUpdateNetmapCandidates                                       = "update netmap candidates failed"
+	UnknownCompressionLevelDefaultWillBeUsed                             = "unknown compression level, 'optimal' will be used"
 )

internal/qos/config.go

@@ -0,0 +1,31 @@
+package qos
+
+import (
+	"math"
+	"time"
+)
+
+const (
+	NoLimit            int64 = math.MaxInt64
+	DefaultIdleTimeout       = 5 * time.Minute
+)
+
+type LimiterConfig struct {
+	Read  OpConfig
+	Write OpConfig
+}
+
+type OpConfig struct {
+	MaxWaitingOps int64
+	MaxRunningOps int64
+	IdleTimeout   time.Duration
+	Tags          []IOTagConfig
+}
+
+type IOTagConfig struct {
+	Tag         string
+	Weight      *float64
+	LimitOps    *float64
+	ReservedOps *float64
+	Prohibited  bool
+}

internal/qos/limiter.go

@@ -8,7 +8,6 @@ import (
 	"sync/atomic"
 	"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"
@@ -37,15 +36,15 @@ type scheduler interface {
 	Close()
 }
 
-func NewLimiter(c *limits.Config) (Limiter, error) {
+func NewLimiter(c LimiterConfig) (Limiter, error) {
-	if err := validateConfig(c); err != nil {
+	if err := c.Validate(); err != nil {
 		return nil, err
 	}
-	readScheduler, err := createScheduler(c.Read())
+	readScheduler, err := createScheduler(c.Read)
 	if err != nil {
 		return nil, fmt.Errorf("create read scheduler: %w", err)
 	}
-	writeScheduler, err := createScheduler(c.Write())
+	writeScheduler, err := createScheduler(c.Write)
 	if err != nil {
 		return nil, fmt.Errorf("create write scheduler: %w", err)
 	}
@@ -63,8 +62,8 @@ func NewLimiter(c *limits.Config) (Limiter, error) {
 	return l, nil
 }
 
-func createScheduler(config limits.OpConfig) (scheduler, error) {
+func createScheduler(config OpConfig) (scheduler, error) {
-	if len(config.Tags) == 0 && config.MaxWaitingOps == limits.NoLimit {
+	if len(config.Tags) == 0 && config.MaxWaitingOps == NoLimit {
 		return newSemaphoreScheduler(config.MaxRunningOps), nil
 	}
 	return scheduling.NewMClock(
@@ -72,7 +71,7 @@ func createScheduler(config limits.OpConfig) (scheduler, error) {
 		converToSchedulingTags(config.Tags), config.IdleTimeout)
 }
 
-func converToSchedulingTags(limits []limits.IOTagConfig) map[string]scheduling.TagInfo {
+func converToSchedulingTags(limits []IOTagConfig) map[string]scheduling.TagInfo {
 	result := make(map[string]scheduling.TagInfo)
 	for _, tag := range []IOTag{IOTagBackground, IOTagClient, IOTagInternal, IOTagPolicer, IOTagTreeSync, IOTagWritecache} {
 		result[tag.String()] = scheduling.TagInfo{

internal/qos/validate.go

@@ -4,8 +4,6 @@ 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")
@@ -14,17 +12,17 @@ type tagConfig struct {
 	Shares, Limit, Reserved *float64
 }
 
-func validateConfig(c *limits.Config) error {
+func (c *LimiterConfig) Validate() error {
-	if err := validateOpConfig(c.Read()); err != nil {
+	if err := validateOpConfig(c.Read); err != nil {
 		return fmt.Errorf("limits 'read' section validation error: %w", err)
 	}
-	if err := validateOpConfig(c.Write()); err != nil {
+	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 {
+func validateOpConfig(c OpConfig) error {
 	if c.MaxRunningOps <= 0 {
 		return fmt.Errorf("invalid 'max_running_ops = %d': must be greater than zero", c.MaxRunningOps)
 	}
@@ -40,7 +38,7 @@ func validateOpConfig(c limits.OpConfig) error {
 	return nil
 }
 
-func validateTags(configTags []limits.IOTagConfig) error {
+func validateTags(configTags []IOTagConfig) error {
 	tags := map[IOTag]tagConfig{
 		IOTagBackground: {},
 		IOTagClient:     {},

pkg/core/client/util.go

@@ -3,6 +3,7 @@ package client
 import (
 	"bytes"
 	"fmt"
+	"iter"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
@@ -19,7 +20,7 @@ func nodeInfoFromKeyAddr(dst *NodeInfo, k []byte, a, external network.AddressGro
 // Args must not be nil.
 func NodeInfoFromRawNetmapElement(dst *NodeInfo, info interface {
 	PublicKey() []byte
-	IterateAddresses(func(string) bool)
+	Addresses() iter.Seq[string]
 	NumberOfAddresses() int
 	ExternalAddresses() []string
 },

pkg/core/netmap/nodes.go

@@ -1,6 +1,10 @@
 package netmap
 
-import "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+import (
+	"iter"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+)
 
 // Node is a named type of netmap.NodeInfo which provides interface needed
 // in the current repository. Node is expected to be used everywhere instead
@@ -14,10 +18,20 @@ func (x Node) PublicKey() []byte {
 	return (netmap.NodeInfo)(x).PublicKey()
 }
 
+// Addresses returns an iterator over all announced network addresses.
+func (x Node) Addresses() iter.Seq[string] {
+	return (netmap.NodeInfo)(x).NetworkEndpoints()
+}
+
 // IterateAddresses iterates over all announced network addresses
 // and passes them into f. Handler MUST NOT be nil.
+// Deprecated: use [Node.Addresses] instead.
 func (x Node) IterateAddresses(f func(string) bool) {
-	(netmap.NodeInfo)(x).IterateNetworkEndpoints(f)
+	for s := range (netmap.NodeInfo)(x).NetworkEndpoints() {
+		if f(s) {
+			return
+		}
+	}
 }
 
 // NumberOfAddresses returns number of announced network addresses.

pkg/core/object/info.go

@@ -13,6 +13,13 @@ type ECInfo struct {
 	Total    uint32
 }
 
+func (v *ECInfo) String() string {
+	if v == nil {
+		return "<nil>"
+	}
+	return fmt.Sprintf("parent ID: %s, index: %d, total %d", v.ParentID, v.Index, v.Total)
+}
+
 // Info groups object address with its FrostFS
 // object info.
 type Info struct {
@@ -23,5 +30,5 @@ type Info struct {
 }
 
 func (v Info) String() string {
-	return fmt.Sprintf("address: %s, type: %s, is linking: %t", v.Address, v.Type, v.IsLinkingObject)
+	return fmt.Sprintf("address: %s, type: %s, is linking: %t, EC header: %s", v.Address, v.Type, v.IsLinkingObject, v.ECInfo)
 }

pkg/innerring/initialization.go

@@ -50,7 +50,7 @@ func (s *Server) initNetmapProcessor(ctx context.Context, cfg *viper.Viper,
 
 	var err error
 	s.netmapProcessor, err = netmap.New(&netmap.Params{
-		Log:              s.log,
+		Log:              s.log.WithTag(logger.TagProcessor),
 		Metrics:          s.irMetrics,
 		PoolSize:         poolSize,
 		NetmapClient:     netmap.NewNetmapClient(s.netmapClient),
@@ -159,7 +159,7 @@ func (s *Server) createAlphaSync(cfg *viper.Viper, frostfsCli *frostfsClient.Cli
 	} else {
 		// create governance processor
 		governanceProcessor, err := governance.New(&governance.Params{
-			Log:           s.log,
+			Log:           s.log.WithTag(logger.TagProcessor),
 			Metrics:       s.irMetrics,
 			FrostFSClient: frostfsCli,
 			AlphabetState: s,
@@ -225,7 +225,7 @@ func (s *Server) initAlphabetProcessor(ctx context.Context, cfg *viper.Viper) er
 	// create alphabet processor
 	s.alphabetProcessor, err = alphabet.New(&alphabet.Params{
 		ParsedWallets:     parsedWallets,
-		Log:               s.log,
+		Log:               s.log.WithTag(logger.TagProcessor),
 		Metrics:           s.irMetrics,
 		PoolSize:          poolSize,
 		AlphabetContracts: s.contracts.alphabet,
@@ -247,7 +247,7 @@ func (s *Server) initContainerProcessor(ctx context.Context, cfg *viper.Viper, c
 	s.log.Debug(ctx, logs.ContainerContainerWorkerPool, zap.Int("size", poolSize))
 	// container processor
 	containerProcessor, err := cont.New(&cont.Params{
-		Log:             s.log,
+		Log:             s.log.WithTag(logger.TagProcessor),
 		Metrics:         s.irMetrics,
 		PoolSize:        poolSize,
 		AlphabetState:   s,
@@ -268,7 +268,7 @@ func (s *Server) initBalanceProcessor(ctx context.Context, cfg *viper.Viper, fro
 	s.log.Debug(ctx, logs.BalanceBalanceWorkerPool, zap.Int("size", poolSize))
 	// create balance processor
 	balanceProcessor, err := balance.New(&balance.Params{
-		Log:           s.log,
+		Log:           s.log.WithTag(logger.TagProcessor),
 		Metrics:       s.irMetrics,
 		PoolSize:      poolSize,
 		FrostFSClient: frostfsCli,
@@ -291,7 +291,7 @@ func (s *Server) initFrostFSMainnetProcessor(ctx context.Context, cfg *viper.Vip
 	s.log.Debug(ctx, logs.FrostFSFrostfsWorkerPool, zap.Int("size", poolSize))
 
 	frostfsProcessor, err := frostfs.New(&frostfs.Params{
-		Log:                 s.log,
+		Log:                 s.log.WithTag(logger.TagProcessor),
 		Metrics:             s.irMetrics,
 		PoolSize:            poolSize,
 		FrostFSContract:     s.contracts.frostfs,
@@ -342,7 +342,7 @@ func (s *Server) initGRPCServer(ctx context.Context, cfg *viper.Viper, log *logg
 
 	controlSvc := controlsrv.NewAuditService(controlsrv.New(p, s.netmapClient, s.containerClient,
 		controlsrv.WithAllowedKeys(authKeys),
-	), log, audit)
+	), log.WithTag(logger.TagGrpcSvc), audit)
 
 	grpcControlSrv := grpc.NewServer()
 	control.RegisterControlServiceServer(grpcControlSrv, controlSvc)
@@ -458,7 +458,7 @@ func (s *Server) initMorph(ctx context.Context, cfg *viper.Viper, errChan chan<-
 	}
 
 	morphChain := &chainParams{
-		log:              s.log,
+		log:              s.log.WithTag(logger.TagMorph),
 		cfg:              cfg,
 		key:              s.key,
 		name:             morphPrefix,

pkg/innerring/innerring.go

@@ -339,7 +339,7 @@ func New(ctx context.Context, log *logger.Logger, cfg *viper.Viper, errChan chan
 ) (*Server, error) {
 	var err error
 	server := &Server{
-		log:       log,
+		log:       log.WithTag(logger.TagIr),
 		irMetrics: metrics,
 		cmode:     cmode,
 	}

pkg/local_object_storage/blobovnicza/blobovnicza.go

@@ -110,7 +110,7 @@ func WithFullSizeLimit(lim uint64) Option {
 // WithLogger returns an option to specify Blobovnicza's logger.
 func WithLogger(l *logger.Logger) Option {
 	return func(c *cfg) {
-		c.log = l.With(zap.String("component", "Blobovnicza"))
+		c.log = l
 	}
 }
 

pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go

@@ -158,11 +158,11 @@ func (b *Blobovniczas) Path() string {
 }
 
 // SetCompressor implements common.Storage.
-func (b *Blobovniczas) SetCompressor(cc *compression.Config) {
+func (b *Blobovniczas) SetCompressor(cc *compression.Compressor) {
 	b.compression = cc
 }
 
-func (b *Blobovniczas) Compressor() *compression.Config {
+func (b *Blobovniczas) Compressor() *compression.Compressor {
 	return b.compression
 }
 

pkg/local_object_storage/blobstor/blobovniczatree/concurrency_test.go

@@ -19,7 +19,8 @@ func TestBlobovniczaTree_Concurrency(t *testing.T) {
 
 	st := NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(1024),
 		WithBlobovniczaShallowWidth(10),
 		WithBlobovniczaShallowDepth(1),

pkg/local_object_storage/blobstor/blobovniczatree/exists_test.go

@@ -19,7 +19,8 @@ func TestExistsInvalidStorageID(t *testing.T) {
 	dir := t.TempDir()
 	b := NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(1024),
 		WithBlobovniczaShallowWidth(2),
 		WithBlobovniczaShallowDepth(2),

pkg/local_object_storage/blobstor/blobovniczatree/generic_test.go

@@ -15,7 +15,8 @@ func TestGeneric(t *testing.T) {
 	helper := func(t *testing.T, dir string) common.Storage {
 		return NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(maxObjectSize),
 			WithBlobovniczaShallowWidth(2),
 			WithBlobovniczaShallowDepth(2),
@@ -43,7 +44,8 @@ func TestControl(t *testing.T) {
 	newTree := func(t *testing.T) common.Storage {
 		return NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(maxObjectSize),
 			WithBlobovniczaShallowWidth(2),
 			WithBlobovniczaShallowDepth(2),

pkg/local_object_storage/blobstor/blobovniczatree/option.go

@@ -19,7 +19,7 @@ type cfg struct {
 	openedCacheSize    int
 	blzShallowDepth    uint64
 	blzShallowWidth    uint64
-	compression        *compression.Config
+	compression        *compression.Compressor
 	blzOpts            []blobovnicza.Option
 	reportError        func(context.Context, string, error) // reportError is the function called when encountering disk errors.
 	metrics            Metrics
@@ -63,10 +63,15 @@ func initConfig(c *cfg) {
 	}
 }
 
-func WithLogger(l *logger.Logger) Option {
+func WithBlobovniczaTreeLogger(log *logger.Logger) Option {
 	return func(c *cfg) {
-		c.log = l
+		c.log = log
-		c.blzOpts = append(c.blzOpts, blobovnicza.WithLogger(l))
+	}
+}
+
+func WithBlobovniczaLogger(log *logger.Logger) Option {
+	return func(c *cfg) {
+		c.blzOpts = append(c.blzOpts, blobovnicza.WithLogger(log))
 	}
 }
 

pkg/local_object_storage/blobstor/blobovniczatree/rebuild.go

@@ -226,7 +226,7 @@ func (b *Blobovniczas) rebuildDB(ctx context.Context, path string, meta common.M
 
 func (b *Blobovniczas) addRebuildTempFile(ctx context.Context, path string) (func(), error) {
 	sysPath := filepath.Join(b.rootPath, path)
-	sysPath = sysPath + rebuildSuffix
+	sysPath += rebuildSuffix
 	_, err := os.OpenFile(sysPath, os.O_RDWR|os.O_CREATE|os.O_EXCL|os.O_SYNC, b.perm)
 	if err != nil {
 		return nil, err

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_failover_test.go

@@ -140,7 +140,8 @@ func testRebuildFailoverObjectDeletedFromSource(t *testing.T) {
 func testRebuildFailoverValidate(t *testing.T, dir string, obj *objectSDK.Object, mustUpdateStorageID bool) {
 	b := NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(2048),
 		WithBlobovniczaShallowWidth(2),
 		WithBlobovniczaShallowDepth(2),

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go

@@ -50,7 +50,8 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		dir := t.TempDir()
 		b := NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(64*1024),
 			WithBlobovniczaShallowWidth(1), // single directory
 			WithBlobovniczaShallowDepth(1),
@@ -106,7 +107,8 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		dir := t.TempDir()
 		b := NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(64*1024),
 			WithBlobovniczaShallowWidth(1), // single directory
 			WithBlobovniczaShallowDepth(1),
@@ -160,7 +162,8 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		dir := t.TempDir()
 		b := NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(64*1024),
 			WithBlobovniczaShallowWidth(1), // single directory
 			WithBlobovniczaShallowDepth(1),
@@ -231,7 +234,8 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		dir := t.TempDir()
 		b := NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(64*1024),
 			WithBlobovniczaShallowWidth(1), // single directory
 			WithBlobovniczaShallowDepth(1),
@@ -262,7 +266,8 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		require.NoError(t, b.Close(context.Background()))
 		b = NewBlobovniczaTree(
 			context.Background(),
-			WithLogger(test.NewLogger(t)),
+			WithBlobovniczaLogger(test.NewLogger(t)),
+			WithBlobovniczaTreeLogger(test.NewLogger(t)),
 			WithObjectSizeLimit(64*1024),
 			WithBlobovniczaShallowWidth(1),
 			WithBlobovniczaShallowDepth(1),
@@ -304,7 +309,8 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 	dir := t.TempDir()
 	b := NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(64*1024), // 64KB object size limit
 		WithBlobovniczaShallowWidth(5),
 		WithBlobovniczaShallowDepth(2), // depth = 2
@@ -332,7 +338,8 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 
 	b = NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(32*1024), // 32KB object size limit
 		WithBlobovniczaShallowWidth(5),
 		WithBlobovniczaShallowDepth(3), // depth = 3
@@ -374,7 +381,8 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 	dir := t.TempDir()
 	b := NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(2048),
 		WithBlobovniczaShallowWidth(sourceWidth),
 		WithBlobovniczaShallowDepth(sourceDepth),
@@ -415,7 +423,8 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 
 	b = NewBlobovniczaTree(
 		context.Background(),
-		WithLogger(test.NewLogger(t)),
+		WithBlobovniczaLogger(test.NewLogger(t)),
+		WithBlobovniczaTreeLogger(test.NewLogger(t)),
 		WithObjectSizeLimit(2048),
 		WithBlobovniczaShallowWidth(targetWidth),
 		WithBlobovniczaShallowDepth(targetDepth),

pkg/local_object_storage/blobstor/blobstor.go

@@ -41,7 +41,7 @@ type SubStorageInfo struct {
 type Option func(*cfg)
 
 type cfg struct {
-	compression compression.Config
+	compression compression.Compressor
 	log         *logger.Logger
 	storage     []SubStorage
 	metrics     Metrics
@@ -91,50 +91,13 @@ func WithStorages(st []SubStorage) Option {
 // WithLogger returns option to specify BlobStor's logger.
 func WithLogger(l *logger.Logger) Option {
 	return func(c *cfg) {
-		c.log = l.With(zap.String("component", "BlobStor"))
+		c.log = l
 	}
 }
 
-// WithCompressObjects returns option to toggle
+func WithCompression(comp compression.Config) Option {
-// compression of the stored objects.
-//
-// If true, Zstandard algorithm is used for data compression.
-//
-// If compressor (decompressor) creation failed,
-// the uncompressed option will be used, and the error
-// is recorded in the provided log.
-func WithCompressObjects(comp bool) Option {
 	return func(c *cfg) {
-		c.compression.Enabled = comp
+		c.compression.Config = comp
-	}
-}
-
-// WithCompressibilityEstimate returns an option to use
-// normilized compressibility estimate to decide compress
-// data or not.
-//
-// See https://github.com/klauspost/compress/blob/v1.17.2/compressible.go#L5
-func WithCompressibilityEstimate(v bool) Option {
-	return func(c *cfg) {
-		c.compression.UseCompressEstimation = v
-	}
-}
-
-// WithCompressibilityEstimateThreshold returns an option to set
-// normilized compressibility estimate threshold.
-//
-// See https://github.com/klauspost/compress/blob/v1.17.2/compressible.go#L5
-func WithCompressibilityEstimateThreshold(threshold float64) Option {
-	return func(c *cfg) {
-		c.compression.CompressEstimationThreshold = threshold
-	}
-}
-
-// WithUncompressableContentTypes returns option to disable decompression
-// for specific content types as seen by object.AttributeContentType attribute.
-func WithUncompressableContentTypes(values []string) Option {
-	return func(c *cfg) {
-		c.compression.UncompressableContentTypes = values
 	}
 }
 
@@ -152,6 +115,6 @@ func WithMetrics(m Metrics) Option {
 	}
 }
 
-func (b *BlobStor) Compressor() *compression.Config {
+func (b *BlobStor) Compressor() *compression.Compressor {
 	return &b.compression
 }

pkg/local_object_storage/blobstor/blobstor_test.go

@@ -9,6 +9,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/teststore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
@@ -51,7 +52,9 @@ func TestCompression(t *testing.T) {
 
 	newBlobStor := func(t *testing.T, compress bool) *BlobStor {
 		bs := New(
-			WithCompressObjects(compress),
+			WithCompression(compression.Config{
+				Enabled: compress,
+			}),
 			WithStorages(defaultStorages(dir, smallSizeLimit)))
 		require.NoError(t, bs.Open(context.Background(), mode.ReadWrite))
 		require.NoError(t, bs.Init(context.Background()))
@@ -113,8 +116,10 @@ func TestBlobstor_needsCompression(t *testing.T) {
 		dir := t.TempDir()
 
 		bs := New(
-			WithCompressObjects(compress),
+			WithCompression(compression.Config{
-			WithUncompressableContentTypes(ct),
+				Enabled:                    compress,
+				UncompressableContentTypes: ct,
+			}),
 			WithStorages([]SubStorage{
 				{
 					Storage: blobovniczatree.NewBlobovniczaTree(

pkg/local_object_storage/blobstor/common/storage.go

@@ -18,8 +18,8 @@ type Storage interface {
 	Path() string
 	ObjectsCount(ctx context.Context) (uint64, error)
 
-	SetCompressor(cc *compression.Config)
+	SetCompressor(cc *compression.Compressor)
-	Compressor() *compression.Config
+	Compressor() *compression.Compressor
 
 	// SetReportErrorFunc allows to provide a function to be called on disk errors.
 	// This function MUST be called before Open.

pkg/local_object_storage/blobstor/compression/bench_test.go

@@ -11,7 +11,7 @@ import (
 )
 
 func BenchmarkCompression(b *testing.B) {
-	c := Config{Enabled: true}
+	c := Compressor{Config: Config{Enabled: true}}
 	require.NoError(b, c.Init())
 
 	for _, size := range []int{128, 1024, 32 * 1024, 32 * 1024 * 1024} {
@@ -33,7 +33,7 @@ func BenchmarkCompression(b *testing.B) {
 	}
 }
 
-func benchWith(b *testing.B, c Config, data []byte) {
+func benchWith(b *testing.B, c Compressor, data []byte) {
 	b.ResetTimer()
 	b.ReportAllocs()
 	for range b.N {
@@ -56,8 +56,10 @@ func BenchmarkCompressionRealVSEstimate(b *testing.B) {
 	b.Run("estimate", func(b *testing.B) {
 		b.ResetTimer()
 
-		c := &Config{
+		c := &Compressor{
+			Config: Config{
 				Enabled: true,
+			},
 		}
 		require.NoError(b, c.Init())
 
@@ -76,8 +78,10 @@ func BenchmarkCompressionRealVSEstimate(b *testing.B) {
 	b.Run("compress", func(b *testing.B) {
 		b.ResetTimer()
 
-		c := &Config{
+		c := &Compressor{
+			Config: Config{
 				Enabled: true,
+			},
 		}
 		require.NoError(b, c.Init())
 

pkg/local_object_storage/blobstor/compression/compress.go

@@ -4,21 +4,36 @@ import (
 	"bytes"
 	"strings"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"github.com/klauspost/compress"
 	"github.com/klauspost/compress/zstd"
 )
 
+type Level string
+
+const (
+	LevelDefault      Level = ""
+	LevelOptimal      Level = "optimal"
+	LevelFastest      Level = "fastest"
+	LevelSmallestSize Level = "smallest_size"
+)
+
+type Compressor struct {
+	Config
+
+	encoder *zstd.Encoder
+	decoder *zstd.Decoder
+}
+
 // Config represents common compression-related configuration.
 type Config struct {
 	Enabled                    bool
 	UncompressableContentTypes []string
+	Level                      Level
 
-	UseCompressEstimation       bool
+	EstimateCompressibility          bool
-	CompressEstimationThreshold float64
+	EstimateCompressibilityThreshold float64
-
-	encoder *zstd.Encoder
-	decoder *zstd.Decoder
 }
 
 // zstdFrameMagic contains first 4 bytes of any compressed object
@@ -26,11 +41,11 @@ type Config struct {
 var zstdFrameMagic = []byte{0x28, 0xb5, 0x2f, 0xfd}
 
 // Init initializes compression routines.
-func (c *Config) Init() error {
+func (c *Compressor) Init() error {
 	var err error
 
 	if c.Enabled {
-		c.encoder, err = zstd.NewWriter(nil)
+		c.encoder, err = zstd.NewWriter(nil, zstd.WithEncoderLevel(c.compressionLevel()))
 		if err != nil {
 			return err
 		}
@@ -73,7 +88,7 @@ func (c *Config) NeedsCompression(obj *objectSDK.Object) bool {
 
 // Decompress decompresses data if it starts with the magic
 // and returns data untouched otherwise.
-func (c *Config) Decompress(data []byte) ([]byte, error) {
+func (c *Compressor) Decompress(data []byte) ([]byte, error) {
 	if len(data) < 4 || !bytes.Equal(data[:4], zstdFrameMagic) {
 		return data, nil
 	}
@@ -82,13 +97,13 @@ func (c *Config) Decompress(data []byte) ([]byte, error) {
 
 // Compress compresses data if compression is enabled
 // and returns data untouched otherwise.
-func (c *Config) Compress(data []byte) []byte {
+func (c *Compressor) Compress(data []byte) []byte {
 	if c == nil || !c.Enabled {
 		return data
 	}
-	if c.UseCompressEstimation {
+	if c.EstimateCompressibility {
 		estimated := compress.Estimate(data)
-		if estimated >= c.CompressEstimationThreshold {
+		if estimated >= c.EstimateCompressibilityThreshold {
 			return c.compress(data)
 		}
 		return data
@@ -96,7 +111,7 @@ func (c *Config) Compress(data []byte) []byte {
 	return c.compress(data)
 }
 
-func (c *Config) compress(data []byte) []byte {
+func (c *Compressor) compress(data []byte) []byte {
 	maxSize := c.encoder.MaxEncodedSize(len(data))
 	compressed := c.encoder.EncodeAll(data, make([]byte, 0, maxSize))
 	if len(data) < len(compressed) {
@@ -106,7 +121,7 @@ func (c *Config) compress(data []byte) []byte {
 }
 
 // Close closes encoder and decoder, returns any error occurred.
-func (c *Config) Close() error {
+func (c *Compressor) Close() error {
 	var err error
 	if c.encoder != nil {
 		err = c.encoder.Close()
@@ -116,3 +131,24 @@ func (c *Config) Close() error {
 	}
 	return err
 }
+
+func (c *Config) HasValidCompressionLevel() bool {
+	return c.Level == LevelDefault ||
+		c.Level == LevelOptimal ||
+		c.Level == LevelFastest ||
+		c.Level == LevelSmallestSize
+}
+
+func (c *Compressor) compressionLevel() zstd.EncoderLevel {
+	switch c.Level {
+	case LevelDefault, LevelOptimal:
+		return zstd.SpeedDefault
+	case LevelFastest:
+		return zstd.SpeedFastest
+	case LevelSmallestSize:
+		return zstd.SpeedBestCompression
+	default:
+		assert.Fail("unknown compression level", string(c.Level))
+		return zstd.SpeedDefault
+	}
+}

pkg/local_object_storage/blobstor/control.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"go.uber.org/zap"
 )
@@ -53,6 +54,10 @@ var ErrInitBlobovniczas = errors.New("failure on blobovnicza initialization stag
 func (b *BlobStor) Init(ctx context.Context) error {
 	b.log.Debug(ctx, logs.BlobstorInitializing)
 
+	if !b.compression.HasValidCompressionLevel() {
+		b.log.Warn(ctx, logs.UnknownCompressionLevelDefaultWillBeUsed, zap.String("level", string(b.compression.Level)))
+		b.compression.Level = compression.LevelDefault
+	}
 	if err := b.compression.Init(); err != nil {
 		return err
 	}

pkg/local_object_storage/blobstor/fstree/counter.go

@@ -2,6 +2,8 @@ package fstree
 
 import (
 	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 )
 
 // FileCounter used to count files in FSTree. The implementation must be thread-safe.
@@ -52,16 +54,11 @@ func (c *SimpleCounter) Dec(size uint64) {
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
 
-	if c.count > 0 {
+	assert.True(c.count > 0, "fstree.SimpleCounter: invalid count")
 	c.count--
-	} else {
+
-		panic("fstree.SimpleCounter: invalid count")
+	assert.True(c.size >= size, "fstree.SimpleCounter: invalid size")
-	}
-	if c.size >= size {
 	c.size -= size
-	} else {
-		panic("fstree.SimpleCounter: invalid size")
-	}
 }
 
 func (c *SimpleCounter) CountSize() (uint64, uint64) {

pkg/local_object_storage/blobstor/fstree/fstree.go

@@ -45,7 +45,7 @@ type FSTree struct {
 
 	log *logger.Logger
 
-	*compression.Config
+	compressor *compression.Compressor
 	Depth      uint64
 	DirNameLen int
 
@@ -82,7 +82,7 @@ func New(opts ...Option) *FSTree {
 			Permissions: 0o700,
 			RootPath:    "./",
 		},
-		Config:      nil,
+		compressor:  nil,
 		Depth:       4,
 		DirNameLen:  DirNameLen,
 		metrics:     &noopMetrics{},
@@ -196,7 +196,7 @@ func (t *FSTree) iterate(ctx context.Context, depth uint64, curPath []string, pr
 		}
 
 		if err == nil {
-			data, err = t.Decompress(data)
+			data, err = t.compressor.Decompress(data)
 		}
 		if err != nil {
 			if prm.IgnoreErrors {
@@ -405,7 +405,7 @@ func (t *FSTree) Put(ctx context.Context, prm common.PutPrm) (common.PutRes, err
 		return common.PutRes{}, err
 	}
 	if !prm.DontCompress {
-		prm.RawData = t.Compress(prm.RawData)
+		prm.RawData = t.compressor.Compress(prm.RawData)
 	}
 
 	size = len(prm.RawData)
@@ -448,7 +448,7 @@ func (t *FSTree) Get(ctx context.Context, prm common.GetPrm) (common.GetRes, err
 		}
 	}
 
-	data, err = t.Decompress(data)
+	data, err = t.compressor.Decompress(data)
 	if err != nil {
 		return common.GetRes{}, err
 	}
@@ -597,12 +597,12 @@ func (t *FSTree) Path() string {
 }
 
 // SetCompressor implements common.Storage.
-func (t *FSTree) SetCompressor(cc *compression.Config) {
+func (t *FSTree) SetCompressor(cc *compression.Compressor) {
-	t.Config = cc
+	t.compressor = cc
 }
 
-func (t *FSTree) Compressor() *compression.Config {
+func (t *FSTree) Compressor() *compression.Compressor {
-	return t.Config
+	return t.compressor
 }
 
 // SetReportErrorFunc implements common.Storage.

pkg/local_object_storage/blobstor/fstree/fstree_write_generic.go

@@ -67,13 +67,10 @@ func (w *genericWriter) writeAndRename(tmpPath, p string, data []byte) error {
 	err := w.writeFile(tmpPath, data)
 	if err != nil {
 		var pe *fs.PathError
-		if errors.As(err, &pe) {
+		if errors.As(err, &pe) && errors.Is(pe.Err, syscall.ENOSPC) {
-			switch pe.Err {
-			case syscall.ENOSPC:
 			err = common.ErrNoSpace
 			_ = os.RemoveAll(tmpPath)
 		}
-		}
 		return err
 	}
 

pkg/local_object_storage/blobstor/fstree/option.go

@@ -4,7 +4,6 @@ import (
 	"io/fs"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
-	"go.uber.org/zap"
 )
 
 type Option func(*FSTree)
@@ -53,6 +52,6 @@ func WithFileCounter(c FileCounter) Option {
 
 func WithLogger(l *logger.Logger) Option {
 	return func(f *FSTree) {
-		f.log = l.With(zap.String("component", "FSTree"))
+		f.log = l
 	}
 }

pkg/local_object_storage/blobstor/iterate_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/memstore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/teststore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
@@ -24,7 +25,9 @@ func TestIterateObjects(t *testing.T) {
 	// create BlobStor instance
 	blobStor := New(
 		WithStorages(defaultStorages(p, smalSz)),
-		WithCompressObjects(true),
+		WithCompression(compression.Config{
+			Enabled: true,
+		}),
 	)
 
 	defer os.RemoveAll(p)

pkg/local_object_storage/blobstor/memstore/control.go

@@ -16,7 +16,7 @@ func (s *memstoreImpl) Init() error
 func (s *memstoreImpl) Close(context.Context) error                             { return nil }
 func (s *memstoreImpl) Type() string                                            { return Type }
 func (s *memstoreImpl) Path() string                                            { return s.rootPath }
-func (s *memstoreImpl) SetCompressor(cc *compression.Config)                    { s.compression = cc }
+func (s *memstoreImpl) SetCompressor(cc *compression.Compressor)                { s.compression = cc }
-func (s *memstoreImpl) Compressor() *compression.Config                         { return s.compression }
+func (s *memstoreImpl) Compressor() *compression.Compressor                     { return s.compression }
 func (s *memstoreImpl) SetReportErrorFunc(func(context.Context, string, error)) {}
 func (s *memstoreImpl) SetParentID(string)                                      {}

pkg/local_object_storage/blobstor/memstore/option.go

@@ -7,7 +7,7 @@ import (
 type cfg struct {
 	rootPath    string
 	readOnly    bool
-	compression *compression.Config
+	compression *compression.Compressor
 }
 
 func defaultConfig() *cfg {

pkg/local_object_storage/blobstor/teststore/option.go

@@ -17,8 +17,8 @@ type cfg struct {
 
 		Type               func() string
 		Path               func() string
-		SetCompressor      func(cc *compression.Config)
+		SetCompressor      func(cc *compression.Compressor)
-		Compressor         func() *compression.Config
+		Compressor         func() *compression.Compressor
 		SetReportErrorFunc func(f func(context.Context, string, error))
 
 		Get      func(common.GetPrm) (common.GetRes, error)
@@ -45,11 +45,11 @@ func WithClose(f func() error) Option                  { return func(c *cfg) { c
 func WithType(f func() string) Option { return func(c *cfg) { c.overrides.Type = f } }
 func WithPath(f func() string) Option { return func(c *cfg) { c.overrides.Path = f } }
 
-func WithSetCompressor(f func(*compression.Config)) Option {
+func WithSetCompressor(f func(*compression.Compressor)) Option {
 	return func(c *cfg) { c.overrides.SetCompressor = f }
 }
 
-func WithCompressor(f func() *compression.Config) Option {
+func WithCompressor(f func() *compression.Compressor) Option {
 	return func(c *cfg) { c.overrides.Compressor = f }
 }
 

pkg/local_object_storage/blobstor/teststore/teststore.go

@@ -116,7 +116,7 @@ func (s *TestStore) Path() string {
 	}
 }
 
-func (s *TestStore) SetCompressor(cc *compression.Config) {
+func (s *TestStore) SetCompressor(cc *compression.Compressor) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 	switch {
@@ -129,7 +129,7 @@ func (s *TestStore) SetCompressor(cc *compression.Config) {
 	}
 }
 
-func (s *TestStore) Compressor() *compression.Config {
+func (s *TestStore) Compressor() *compression.Compressor {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 	switch {

pkg/local_object_storage/engine/control.go

@@ -22,10 +22,6 @@ type shardInitError struct {
 
 // Open opens all StorageEngine's components.
 func (e *StorageEngine) Open(ctx context.Context) error {
-	return e.open(ctx)
-}
-
-func (e *StorageEngine) open(ctx context.Context) error {
 	e.mtx.Lock()
 	defer e.mtx.Unlock()
 
@@ -149,11 +145,11 @@ var errClosed = errors.New("storage engine is closed")
 func (e *StorageEngine) Close(ctx context.Context) error {
 	close(e.closeCh)
 	defer e.wg.Wait()
-	return e.setBlockExecErr(ctx, errClosed)
+	return e.closeEngine(ctx)
 }
 
 // closes all shards. Never returns an error, shard errors are logged.
-func (e *StorageEngine) close(ctx context.Context) error {
+func (e *StorageEngine) closeAllShards(ctx context.Context) error {
 	e.mtx.RLock()
 	defer e.mtx.RUnlock()
 
@@ -176,70 +172,23 @@ func (e *StorageEngine) execIfNotBlocked(op func() error) error {
 	e.blockExec.mtx.RLock()
 	defer e.blockExec.mtx.RUnlock()
 
-	if e.blockExec.err != nil {
+	if e.blockExec.closed {
-		return e.blockExec.err
+		return errClosed
 	}
 
 	return op()
 }
 
-// sets the flag of blocking execution of all data operations according to err:
+func (e *StorageEngine) closeEngine(ctx context.Context) error {
-//   - err != nil, then blocks the execution. If exec wasn't blocked, calls close method
-//     (if err == errClosed => additionally releases pools and does not allow to resume executions).
-//   - otherwise, resumes execution. If exec was blocked, calls open method.
-//
-// Can be called concurrently with exec. In this case it waits for all executions to complete.
-func (e *StorageEngine) setBlockExecErr(ctx context.Context, err error) error {
 	e.blockExec.mtx.Lock()
 	defer e.blockExec.mtx.Unlock()
 
-	prevErr := e.blockExec.err
+	if e.blockExec.closed {
-
-	wasClosed := errors.Is(prevErr, errClosed)
-	if wasClosed {
 		return errClosed
 	}
 
-	e.blockExec.err = err
+	e.blockExec.closed = true
-
+	return e.closeAllShards(ctx)
-	if err == nil {
-		if prevErr != nil { // block -> ok
-			return e.open(ctx)
-		}
-	} else if prevErr == nil { // ok -> block
-		return e.close(ctx)
-	}
-
-	// otherwise do nothing
-
-	return nil
-}
-
-// BlockExecution blocks the execution of any data-related operation. All blocked ops will return err.
-// To resume the execution, use ResumeExecution method.
-//
-// Сan be called regardless of the fact of the previous blocking. If execution wasn't blocked, releases all resources
-// similar to Close. Can be called concurrently with Close and any data related method (waits for all executions
-// to complete). Returns error if any Close has been called before.
-//
-// Must not be called concurrently with either Open or Init.
-//
-// Note: technically passing nil error will resume the execution, otherwise, it is recommended to call ResumeExecution
-// for this.
-func (e *StorageEngine) BlockExecution(err error) error {
-	return e.setBlockExecErr(context.Background(), err)
-}
-
-// ResumeExecution resumes the execution of any data-related operation.
-// To block the execution, use BlockExecution method.
-//
-// Сan be called regardless of the fact of the previous blocking. If execution was blocked, prepares all resources
-// similar to Open. Can be called concurrently with Close and any data related method (waits for all executions
-// to complete). Returns error if any Close has been called before.
-//
-// Must not be called concurrently with either Open or Init.
-func (e *StorageEngine) ResumeExecution() error {
-	return e.setBlockExecErr(context.Background(), nil)
 }
 
 type ReConfiguration struct {

pkg/local_object_storage/engine/control_test.go

@@ -2,7 +2,6 @@ package engine
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io/fs"
 	"os"
@@ -12,17 +11,14 @@ import (
 	"testing"
 	"time"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/teststore"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
-	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
 	"github.com/stretchr/testify/require"
 	"go.etcd.io/bbolt"
 )
@@ -163,42 +159,6 @@ func testEngineFailInitAndReload(t *testing.T, degradedMode bool, opts []shard.O
 	require.Equal(t, 1, shardCount)
 }
 
-func TestExecBlocks(t *testing.T) {
-	e := testNewEngine(t).setShardsNum(t, 2).prepare(t).engine // number doesn't matter in this test, 2 is several but not many
-
-	// put some object
-	obj := testutil.GenerateObjectWithCID(cidtest.ID())
-
-	addr := object.AddressOf(obj)
-
-	require.NoError(t, Put(context.Background(), e, obj, false))
-
-	// block executions
-	errBlock := errors.New("block exec err")
-
-	require.NoError(t, e.BlockExecution(errBlock))
-
-	// try to exec some op
-	_, err := Head(context.Background(), e, addr)
-	require.ErrorIs(t, err, errBlock)
-
-	// resume executions
-	require.NoError(t, e.ResumeExecution())
-
-	_, err = Head(context.Background(), e, addr) // can be any data-related op
-	require.NoError(t, err)
-
-	// close
-	require.NoError(t, e.Close(context.Background()))
-
-	// try exec after close
-	_, err = Head(context.Background(), e, addr)
-	require.Error(t, err)
-
-	// try to resume
-	require.Error(t, e.ResumeExecution())
-}
-
 func TestPersistentShardID(t *testing.T) {
 	dir := t.TempDir()
 

pkg/local_object_storage/engine/engine.go

@@ -34,8 +34,7 @@ type StorageEngine struct {
 
 	blockExec struct {
 		mtx    sync.RWMutex
-
+		closed bool
-		err error
 	}
 	evacuateLimiter *evacuationLimiter
 }
@@ -212,12 +211,18 @@ func New(opts ...Option) *StorageEngine {
 		opts[i](c)
 	}
 
+	evLimMtx := &sync.RWMutex{}
+	evLimCond := sync.NewCond(evLimMtx)
+
 	return &StorageEngine{
 		cfg:       c,
 		shards:    make(map[string]hashedShard),
 		closeCh:   make(chan struct{}),
 		setModeCh: make(chan setModeRequest),
-		evacuateLimiter: &evacuationLimiter{},
+		evacuateLimiter: &evacuationLimiter{
+			guard:      evLimMtx,
+			statusCond: evLimCond,
+		},
 	}
 }
 

pkg/local_object_storage/engine/engine_test.go

@@ -116,7 +116,8 @@ func newStorages(t testing.TB, root string, smallSize uint64) []blobstor.SubStor
 				blobovniczatree.WithBlobovniczaShallowDepth(1),
 				blobovniczatree.WithBlobovniczaShallowWidth(1),
 				blobovniczatree.WithPermissions(0o700),
-				blobovniczatree.WithLogger(test.NewLogger(t))),
+				blobovniczatree.WithBlobovniczaLogger(test.NewLogger(t)),
+				blobovniczatree.WithBlobovniczaTreeLogger(test.NewLogger(t))),
 			Policy: func(_ *objectSDK.Object, data []byte) bool {
 				return uint64(len(data)) < smallSize
 			},

pkg/local_object_storage/engine/evacuate_limiter.go

@@ -139,7 +139,8 @@ type evacuationLimiter struct {
 	eg     *errgroup.Group
 	cancel context.CancelFunc
 
-	guard sync.RWMutex
+	guard      *sync.RWMutex
+	statusCond *sync.Cond // used in unit tests
 }
 
 func (l *evacuationLimiter) TryStart(ctx context.Context, shardIDs []string, result *EvacuateShardRes) (*errgroup.Group, context.Context, error) {
@@ -165,6 +166,7 @@ func (l *evacuationLimiter) TryStart(ctx context.Context, shardIDs []string, res
 		startedAt:    time.Now().UTC(),
 		result:       result,
 	}
+	l.statusCond.Broadcast()
 
 	return l.eg, egCtx, nil
 }
@@ -180,6 +182,7 @@ func (l *evacuationLimiter) Complete(err error) {
 	l.state.processState = EvacuateProcessStateCompleted
 	l.state.errMessage = errMsq
 	l.state.finishedAt = time.Now().UTC()
+	l.statusCond.Broadcast()
 
 	l.eg = nil
 }
@@ -214,6 +217,7 @@ func (l *evacuationLimiter) ResetEvacuationStatus() error {
 	l.state = EvacuationState{}
 	l.eg = nil
 	l.cancel = nil
+	l.statusCond.Broadcast()
 
 	return nil
 }

pkg/local_object_storage/engine/evacuate_test.go

@@ -204,11 +204,10 @@ func TestEvacuateShardObjects(t *testing.T) {
 func testWaitForEvacuationCompleted(t *testing.T, e *StorageEngine) *EvacuationState {
 	var st *EvacuationState
 	var err error
-	require.Eventually(t, func() bool {
+	e.evacuateLimiter.waitForCompleted()
 	st, err = e.GetEvacuationState(context.Background())
 	require.NoError(t, err)
-		return st.ProcessingStatus() == EvacuateProcessStateCompleted
+	require.Equal(t, EvacuateProcessStateCompleted, st.ProcessingStatus())
-	}, 6*time.Second, 10*time.Millisecond)
 	return st
 }
 
@@ -817,3 +816,12 @@ func TestEvacuateShardObjectsRepOneOnlyBench(t *testing.T) {
 	t.Logf("evacuate took %v\n", time.Since(start))
 	require.NoError(t, err)
 }
+
+func (l *evacuationLimiter) waitForCompleted() {
+	l.guard.Lock()
+	defer l.guard.Unlock()
+
+	for l.state.processState != EvacuateProcessStateCompleted {
+		l.statusCond.Wait()
+	}
+}

pkg/local_object_storage/engine/inhume.go

@@ -186,10 +186,6 @@ func (e *StorageEngine) findShards(ctx context.Context, addr oid.Address, checkL
 		default:
 		}
 
-		if !objectExists {
-			return
-		}
-
 		if checkLocked {
 			if isLocked, err := sh.IsLocked(ctx, addr); err != nil {
 				e.log.Warn(ctx, logs.EngineRemovingAnObjectWithoutFullLockingCheck,
@@ -202,6 +198,13 @@ func (e *StorageEngine) findShards(ctx context.Context, addr oid.Address, checkL
 			}
 		}
 
+		// This exit point must come after checking if the object is locked,
+		// since the locked index may be populated even if the object doesn't
+		// exist.
+		if !objectExists {
+			return
+		}
+
 		ids = append(ids, sh.ID().String())
 
 		// Continue if it's a root object.

pkg/local_object_storage/engine/inhume_test.go

@@ -242,3 +242,58 @@ func benchmarkInhumeMultipart(b *testing.B, numShards, numObjects int) {
 		b.StopTimer()
 	}
 }
+
+func TestInhumeIfObjectDoesntExist(t *testing.T) {
+	t.Run("object is locked", func(t *testing.T) {
+		t.Run("inhume without tombstone", func(t *testing.T) {
+			testInhumeLockedIfObjectDoesntExist(t, false, false)
+		})
+		t.Run("inhume with tombstone", func(t *testing.T) {
+			testInhumeLockedIfObjectDoesntExist(t, true, false)
+		})
+		t.Run("force inhume without tombstone", func(t *testing.T) {
+			testInhumeLockedIfObjectDoesntExist(t, false, true)
+		})
+		t.Run("force inhume with tombstone", func(t *testing.T) {
+			testInhumeLockedIfObjectDoesntExist(t, true, true)
+		})
+	})
+}
+
+func testInhumeLockedIfObjectDoesntExist(t *testing.T, withTombstone, withForce bool) {
+	t.Parallel()
+
+	var (
+		errLocked *apistatus.ObjectLocked
+		inhumePrm InhumePrm
+		ctx       = context.Background()
+		container = cidtest.ID()
+		object    = oidtest.Address()
+		lock      = oidtest.ID()
+		tombstone = oidtest.Address()
+	)
+	object.SetContainer(container)
+	tombstone.SetContainer(container)
+
+	engine := testNewEngine(t).setShardsNum(t, 4).prepare(t).engine
+	defer func() { require.NoError(t, engine.Close(ctx)) }()
+
+	err := engine.Lock(ctx, container, lock, []oid.ID{object.Object()})
+	require.NoError(t, err)
+
+	if withTombstone {
+		inhumePrm.WithTarget(tombstone, object)
+	} else {
+		inhumePrm.MarkAsGarbage(object)
+	}
+	if withForce {
+		inhumePrm.WithForceRemoval()
+	}
+
+	err = engine.Inhume(ctx, inhumePrm)
+	if withForce {
+		require.NoError(t, err)
+	} else {
+		require.ErrorAs(t, err, &errLocked)
+	}
+}

pkg/local_object_storage/metabase/delete.go

@@ -363,12 +363,12 @@ func (db *DB) deleteObject(
 func parentLength(tx *bbolt.Tx, addr oid.Address) int {
 	bucketName := make([]byte, bucketKeySize)
 
-	bkt := tx.Bucket(parentBucketName(addr.Container(), bucketName[:]))
+	bkt := tx.Bucket(parentBucketName(addr.Container(), bucketName))
 	if bkt == nil {
 		return 0
 	}
 
-	lst, err := decodeList(bkt.Get(objectKey(addr.Object(), bucketName[:])))
+	lst, err := decodeList(bkt.Get(objectKey(addr.Object(), bucketName)))
 	if err != nil {
 		return 0
 	}

pkg/local_object_storage/metabase/lock.go

@@ -7,6 +7,7 @@ import (
 	"slices"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/metaerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
@@ -63,9 +64,7 @@ func (db *DB) Lock(ctx context.Context, cnr cid.ID, locker oid.ID, locked []oid.
 		return ErrReadOnlyMode
 	}
 
-	if len(locked) == 0 {
+	assert.False(len(locked) == 0, "empty locked list")
-		panic("empty locked list")
-	}
 
 	err := db.lockInternal(locked, cnr, locker)
 	success = err == nil

pkg/local_object_storage/metabase/util.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -278,9 +279,7 @@ func objectKey(obj oid.ID, key []byte) []byte {
 //
 // firstIrregularObjectType(tx, cnr, obj) usage allows getting object type.
 func firstIrregularObjectType(tx *bbolt.Tx, idCnr cid.ID, objs ...[]byte) objectSDK.Type {
-	if len(objs) == 0 {
+	assert.False(len(objs) == 0, "empty object list in firstIrregularObjectType")
-		panic("empty object list in firstIrregularObjectType")
-	}
 
 	var keys [2][1 + cidSize]byte
 

pkg/local_object_storage/shard/control.go

@@ -363,6 +363,7 @@ func (s *Shard) refillTombstoneObject(ctx context.Context, obj *objectSDK.Object
 
 // Close releases all Shard's components.
 func (s *Shard) Close(ctx context.Context) error {
+	unlock := s.lockExclusive()
 	if s.rb != nil {
 		s.rb.Stop(ctx, s.log)
 	}
@@ -388,15 +389,19 @@ func (s *Shard) Close(ctx context.Context) error {
 		}
 	}
 
+	if s.opsLimiter != nil {
+		s.opsLimiter.Close()
+	}
+
+	unlock()
+
+	// GC waits for handlers and remover to complete. Handlers may try to lock shard's lock.
+	// So to prevent deadlock GC stopping is outside of exclusive lock.
 	// If Init/Open was unsuccessful gc can be nil.
 	if s.gc != nil {
 		s.gc.stop(ctx)
 	}
 
-	if s.opsLimiter != nil {
-		s.opsLimiter.Close()
-	}
-
 	return lastErr
 }
 

pkg/local_object_storage/shard/gc.go

@@ -391,6 +391,16 @@ func (s *Shard) handleExpiredObjects(ctx context.Context, expired []oid.Address)
 		return
 	}
 
+	s.handleExpiredObjectsUnsafe(ctx, expired)
+}
+
+func (s *Shard) handleExpiredObjectsUnsafe(ctx context.Context, expired []oid.Address) {
+	select {
+	case <-ctx.Done():
+		return
+	default:
+	}
+
 	expired, err := s.getExpiredWithLinked(ctx, expired)
 	if err != nil {
 		s.log.Warn(ctx, logs.ShardGCFailedToGetExpiredWithLinked, zap.Error(err))
@@ -611,13 +621,6 @@ func (s *Shard) getExpiredObjects(ctx context.Context, epoch uint64, onExpiredFo
 }
 
 func (s *Shard) selectExpired(ctx context.Context, epoch uint64, addresses []oid.Address) ([]oid.Address, error) {
-	s.m.RLock()
-	defer s.m.RUnlock()
-
-	if s.info.Mode.NoMetabase() {
-		return nil, ErrDegradedMode
-	}
-
 	release, err := s.opsLimiter.ReadRequest(ctx)
 	if err != nil {
 		return nil, err
@@ -728,7 +731,7 @@ func (s *Shard) inhumeUnlockedIfExpired(ctx context.Context, epoch uint64, unloc
 		return
 	}
 
-	s.handleExpiredObjects(ctx, expiredUnlocked)
+	s.handleExpiredObjectsUnsafe(ctx, expiredUnlocked)
 }
 
 // HandleDeletedLocks unlocks all objects which were locked by lockers.

pkg/local_object_storage/shard/gc_internal_test.go

@@ -37,7 +37,8 @@ func Test_ObjectNotFoundIfNotDeletedFromMetabase(t *testing.T) {
 			{
 				Storage: blobovniczatree.NewBlobovniczaTree(
 					context.Background(),
-					blobovniczatree.WithLogger(test.NewLogger(t)),
+					blobovniczatree.WithBlobovniczaLogger(test.NewLogger(t)),
+					blobovniczatree.WithBlobovniczaTreeLogger(test.NewLogger(t)),
 					blobovniczatree.WithRootPath(filepath.Join(rootPath, "blob", "blobovnicza")),
 					blobovniczatree.WithBlobovniczaShallowDepth(1),
 					blobovniczatree.WithBlobovniczaShallowWidth(1)),

pkg/local_object_storage/shard/lock_test.go

@@ -28,9 +28,10 @@ func TestShard_Lock(t *testing.T) {
 	var sh *Shard
 
 	rootPath := t.TempDir()
+	l := logger.NewLoggerWrapper(zap.NewNop())
 	opts := []Option{
 		WithID(NewIDFromBytes([]byte{})),
-		WithLogger(logger.NewLoggerWrapper(zap.NewNop())),
+		WithLogger(l),
 		WithBlobStorOptions(
 			blobstor.WithStorages([]blobstor.SubStorage{
 				{

pkg/local_object_storage/shard/range_test.go

@@ -79,7 +79,8 @@ func testShardGetRange(t *testing.T, hasWriteCache bool) {
 				{
 					Storage: blobovniczatree.NewBlobovniczaTree(
 						context.Background(),
-						blobovniczatree.WithLogger(test.NewLogger(t)),
+						blobovniczatree.WithBlobovniczaLogger(test.NewLogger(t)),
+						blobovniczatree.WithBlobovniczaTreeLogger(test.NewLogger(t)),
 						blobovniczatree.WithRootPath(filepath.Join(t.TempDir(), "blob", "blobovnicza")),
 						blobovniczatree.WithBlobovniczaShallowDepth(1),
 						blobovniczatree.WithBlobovniczaShallowWidth(1)),

pkg/local_object_storage/shard/shard.go

@@ -205,7 +205,7 @@ func WithPiloramaOptions(opts ...pilorama.Option) Option {
 func WithLogger(l *logger.Logger) Option {
 	return func(c *cfg) {
 		c.log = l
-		c.gcCfg.log = l
+		c.gcCfg.log = l.WithTag(logger.TagGC)
 	}
 }
 

pkg/local_object_storage/shard/shard_test.go

@@ -60,7 +60,8 @@ func newCustomShard(t testing.TB, enableWriteCache bool, o shardOptions) *Shard
 				{
 					Storage: blobovniczatree.NewBlobovniczaTree(
 						context.Background(),
-						blobovniczatree.WithLogger(test.NewLogger(t)),
+						blobovniczatree.WithBlobovniczaLogger(test.NewLogger(t)),
+						blobovniczatree.WithBlobovniczaTreeLogger(test.NewLogger(t)),
 						blobovniczatree.WithRootPath(filepath.Join(o.rootPath, "blob", "blobovnicza")),
 						blobovniczatree.WithBlobovniczaShallowDepth(1),
 						blobovniczatree.WithBlobovniczaShallowWidth(1)),

pkg/local_object_storage/writecache/limiter.go

@@ -3,6 +3,8 @@ package writecache
 import (
 	"errors"
 	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 )
 
 var errLimiterClosed = errors.New("acquire failed: limiter closed")
@@ -45,17 +47,11 @@ func (l *flushLimiter) release(size uint64) {
 	l.cond.L.Lock()
 	defer l.cond.L.Unlock()
 
-	if l.size >= size {
+	assert.True(l.size >= size, "flushLimiter: invalid size")
 	l.size -= size
-	} else {
-		panic("flushLimiter: invalid size")
-	}
 
-	if l.count > 0 {
+	assert.True(l.count > 0, "flushLimiter: invalid count")
 	l.count--
-	} else {
-		panic("flushLimiter: invalid count")
-	}
 
 	l.cond.Broadcast()
 }

pkg/local_object_storage/writecache/options.go

@@ -5,7 +5,6 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/qos"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
-	"go.uber.org/zap"
 )
 
 // Option represents write-cache configuration option.
@@ -46,7 +45,7 @@ type options struct {
 // WithLogger sets logger.
 func WithLogger(log *logger.Logger) Option {
 	return func(o *options) {
-		o.log = log.With(zap.String("component", "WriteCache"))
+		o.log = log
 	}
 }