[#1366] node, ir: Support timestamp config option, update tests

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

.docker/Dockerfile.adm

@@ -1,4 +1,4 @@
-FROM golang:1.22 as builder
+FROM golang:1.22 AS builder
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.docker/Dockerfile.cli

@@ -1,4 +1,4 @@
-FROM golang:1.22 as builder
+FROM golang:1.22 AS builder
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.docker/Dockerfile.ir

@@ -1,4 +1,4 @@
-FROM golang:1.22 as builder
+FROM golang:1.22 AS builder
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.docker/Dockerfile.storage

@@ -1,4 +1,4 @@
-FROM golang:1.22 as builder
+FROM golang:1.22 AS builder
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.forgejo/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.21', '1.22' ]
+        go_versions: [ '1.22', '1.23' ]
 
     steps:
       - uses: actions/checkout@v3

.forgejo/workflows/pre-commit.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.22
+          go-version: 1.23
       - name: Set up Python
         run: |
           apt update

.forgejo/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
 
       - name: Install linters
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.21', '1.22' ]
+        go_versions: [ '1.22', '1.23' ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -48,7 +48,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.22'
           cache: true
 
       - name: Run tests
@@ -63,7 +63,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
 
       - name: Install staticcheck
@@ -81,7 +81,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.22'
           cache: true
 
       - name: Install gopls
@@ -89,3 +89,23 @@ jobs:
 
       - name: Run gopls
         run: make gopls-run
+
+  fumpt:
+    name: Run gofumpt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.23'
+          cache: true
+
+      - name: Install gofumpt
+        run: make fumpt-install
+
+      - name: Run gofumpt
+        run: |
+          make fumpt
+          git diff --exit-code --quiet

.forgejo/workflows/vulncheck.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.22'
+          go-version: '1.23'
 
       - name: Install govulncheck
         run: go install golang.org/x/vuln/cmd/govulncheck@latest

.golangci.yml

@@ -12,7 +12,8 @@ run:
 # output configuration options
 output:
   # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
-  format: tab
+  formats:
+    - format: tab
 
 # all available settings of specific linters
 linters-settings:
@@ -66,7 +67,7 @@ linters:
     - bidichk
     - durationcheck
     - exhaustive
-    - exportloopref
+    - copyloopvar
     - gofmt
     - goimports
     - misspell

Makefile

@@ -4,20 +4,19 @@ SHELL = bash
 REPO ?= $(shell go list -m)
 VERSION ?= $(shell git describe --tags --dirty --match "v*" --always --abbrev=8 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")
 
-HUB_IMAGE ?= truecloudlab/frostfs
+HUB_IMAGE ?= git.frostfs.info/truecloudlab/frostfs
 HUB_TAG ?= "$(shell echo ${VERSION} | sed 's/^v//')"
 
 GO_VERSION ?= 1.22
-LINT_VERSION ?= 1.56.1
-TRUECLOUDLAB_LINT_VERSION ?= 0.0.5
+LINT_VERSION ?= 1.60.3
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.7
 PROTOC_VERSION ?= 25.0
-PROTOC_GEN_GO_VERSION ?= $(shell go list -f '{{.Version}}' -m google.golang.org/protobuf)
 PROTOGEN_FROSTFS_VERSION ?= $(shell go list -f '{{.Version}}' -m git.frostfs.info/TrueCloudLab/frostfs-api-go/v2)
 PROTOC_OS_VERSION=osx-x86_64
 ifeq ($(shell uname), Linux)
 	PROTOC_OS_VERSION=linux-x86_64
 endif
-STATICCHECK_VERSION ?= 2023.1.6
+STATICCHECK_VERSION ?= 2024.1.1
 ARCH = amd64
 
 BIN = bin
@@ -39,13 +38,16 @@ LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT
 TMP_DIR := .cache
 PROTOBUF_DIR ?= $(abspath $(BIN))/protobuf
 PROTOC_DIR ?= $(PROTOBUF_DIR)/protoc-v$(PROTOC_VERSION)
-PROTOC_GEN_GO_DIR ?= $(PROTOBUF_DIR)/protoc-gen-go-$(PROTOC_GEN_GO_VERSION)
 PROTOGEN_FROSTFS_DIR ?= $(PROTOBUF_DIR)/protogen-$(PROTOGEN_FROSTFS_VERSION)
 STATICCHECK_DIR ?= $(abspath $(BIN))/staticcheck
 STATICCHECK_VERSION_DIR ?= $(STATICCHECK_DIR)/$(STATICCHECK_VERSION)
 
 SOURCES = $(shell find . -type f -name "*.go" -print)
 
+GOFUMPT_VERSION ?= v0.7.0
+GOFUMPT_DIR ?= $(abspath $(BIN))/gofumpt
+GOFUMPT_VERSION_DIR ?= $(GOFUMPT_DIR)/$(GOFUMPT_VERSION)
+
 GOPLS_VERSION ?= v0.15.1
 GOPLS_DIR ?= $(abspath $(BIN))/gopls
 GOPLS_VERSION_DIR ?= $(GOPLS_DIR)/$(GOPLS_VERSION)
@@ -103,17 +105,15 @@ export-metrics: dep
 
 # Regenerate proto files:
 protoc:
-	@if [ ! -d "$(PROTOC_DIR)" ] || [ ! -d "$(PROTOC_GEN_GO_DIR)" ] || [ ! -d "$(PROTOGEN_FROSTFS_DIR)" ]; then \
+	@if [ ! -d "$(PROTOC_DIR)" ] || [ ! -d "$(PROTOGEN_FROSTFS_DIR)" ]; then \
 		make protoc-install; \
 	fi
 	@for f in `find . -type f -name '*.proto' -not -path './bin/*'`; do \
 		echo "⇒ Processing $$f "; \
 		$(PROTOC_DIR)/bin/protoc \
 			--proto_path=.:$(PROTOC_DIR)/include:/usr/local/include \
-			--plugin=protoc-gen-go=$(PROTOC_GEN_GO_DIR)/protoc-gen-go \
 			--plugin=protoc-gen-go-frostfs=$(PROTOGEN_FROSTFS_DIR)/protogen \
 			--go-frostfs_out=. --go-frostfs_opt=paths=source_relative \
-			--go_out=. --go_opt=paths=source_relative \
 			--go-grpc_opt=require_unimplemented_servers=false \
 			--go-grpc_out=. --go-grpc_opt=paths=source_relative $$f; \
 	done
@@ -126,8 +126,6 @@ protoc-install:
 	@wget -q -O $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip 'https://github.com/protocolbuffers/protobuf/releases/download/v$(PROTOC_VERSION)/protoc-$(PROTOC_VERSION)-$(PROTOC_OS_VERSION).zip'
 	@unzip -q -o $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip -d $(PROTOC_DIR)
 	@rm $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip
-	@echo "⇒ Installing protoc-gen-go..."
-	@GOBIN=$(PROTOC_GEN_GO_DIR) go install -v google.golang.org/protobuf/...@$(PROTOC_GEN_GO_VERSION)
 	@echo "⇒ Instaling protogen FrostFS plugin..."
 	@GOBIN=$(PROTOGEN_FROSTFS_DIR) go install -mod=mod -v git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/util/protogen@$(PROTOGEN_FROSTFS_VERSION)
 
@@ -165,10 +163,19 @@ imports:
 	@echo "⇒ Processing goimports check"
 	@goimports -w cmd/ pkg/ misc/
 
+# Install gofumpt
+fumpt-install:
+	@rm -rf $(GOFUMPT_DIR)
+	@mkdir $(GOFUMPT_DIR)
+	@GOBIN=$(GOFUMPT_VERSION_DIR) go install mvdan.cc/gofumpt@$(GOFUMPT_VERSION)
+
 # Run gofumpt
 fumpt:
+	@if [ ! -d "$(GOFUMPT_VERSION_DIR)" ]; then \
+		make fumpt-install; \
+	fi
 	@echo "⇒ Processing gofumpt check"
-	@gofumpt -l -w cmd/ pkg/ misc/
+	$(GOFUMPT_VERSION_DIR)/gofumpt -l -w cmd/ pkg/ misc/
 
 # Run Unit Test with go test
 test: GOFLAGS ?= "-count=1"
@@ -190,7 +197,7 @@ lint-install:
 	@@make -C $(TMP_DIR)/linters lib CGO_ENABLED=1 OUT_DIR=$(OUTPUT_LINT_DIR)
 	@rm -rf $(TMP_DIR)/linters
 	@rmdir $(TMP_DIR) 2>/dev/null || true
-	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
+	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install -trimpath github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
 
 # Run linters
 lint:

README.md

@@ -7,9 +7,8 @@
 </p>
 
 ---
-[![Report](https://goreportcard.com/badge/github.com/TrueCloudLab/frostfs-node)](https://goreportcard.com/report/github.com/TrueCloudLab/frostfs-node)
-![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/TrueCloudLab/frostfs-node?sort=semver)
-![License](https://img.shields.io/github/license/TrueCloudLab/frostfs-node.svg?style=popout)
+[![Report](https://goreportcard.com/badge/git.frostfs.info/TrueCloudLab/frostfs-node)](https://goreportcard.com/report/git.frostfs.info/TrueCloudLab/frostfs-node)
+![Release (latest)](https://git.frostfs.info/TrueCloudLab/frostfs-node/badges/release.svg)
 
 # Overview
 
@@ -33,8 +32,8 @@ manipulate large amounts of data without paying a prohibitive price.
 
 FrostFS has a native [gRPC API](https://git.frostfs.info/TrueCloudLab/frostfs-api) and has
 protocol gateways for popular protocols such as [AWS
-S3](https://github.com/TrueCloudLab/frostfs-s3-gw),
-[HTTP](https://github.com/TrueCloudLab/frostfs-http-gw),
+S3](https://git.frostfs.info/TrueCloudLab/frostfs-s3-gw),
+[HTTP](https://git.frostfs.info/TrueCloudLab/frostfs-http-gw),
 [FUSE](https://wikipedia.org/wiki/Filesystem_in_Userspace) and
 [sFTP](https://en.wikipedia.org/wiki/SSH_File_Transfer_Protocol) allowing
 developers to integrate applications without rewriting their code.
@@ -45,11 +44,11 @@ Now, we only support GNU/Linux on amd64 CPUs with AVX/AVX2 instructions. More
 platforms will be officially supported after release `1.0`.
 
 The latest version of frostfs-node works with frostfs-contract
-[v0.16.0](https://github.com/TrueCloudLab/frostfs-contract/releases/tag/v0.16.0).
+[v0.19.2](https://git.frostfs.info/TrueCloudLab/frostfs-contract/releases/tag/v0.19.2).
 
 # Building
 
-To make all binaries you need Go 1.21+ and `make`:
+To make all binaries you need Go 1.22+ and `make`:
 ```
 make all
 ```
@@ -71,7 +70,7 @@ make docker/bin/frostfs-<name> # build a specific binary
 
 ## Docker images
 
-To make docker images suitable for use in [frostfs-dev-env](https://github.com/TrueCloudLab/frostfs-dev-env/) use:
+To make docker images suitable for use in [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env/) use:
 ```
 make images
 ```
@@ -125,7 +124,7 @@ the feature/topic you are going to implement.
 
 # Credits
 
-FrostFS is maintained by [True Cloud Lab](https://github.com/TrueCloudLab/) with the help and
+FrostFS is maintained by [True Cloud Lab](https://git.frostfs.info/TrueCloudLab/) with the help and
 contributions from community members.
 
 Please see [CREDITS](CREDITS.md) for details.

cmd/frostfs-adm/docs/deploy.md

@@ -9,8 +9,8 @@ related configuration details.
 
 To follow this guide you need:
 - latest released version of [neo-go](https://github.com/nspcc-dev/neo-go/releases) (v0.97.2 at the moment),
-- latest released version of [frostfs-adm](https://github.com/TrueCloudLab/frostfs-node/releases) utility (v0.25.1 at the moment),
-- latest released version of compiled [frostfs-contract](https://github.com/TrueCloudLab/frostfs-contract/releases) (v0.11.0 at the moment).
+- latest released version of [frostfs-adm](https://git.frostfs.info/TrueCloudLab/frostfs-node/releases) utility (v0.42.9 at the moment),
+- latest released version of compiled [frostfs-contract](https://git.frostfs.info/TrueCloudLab/frostfs-contract/releases) (v0.19.2 at the moment).
 
 ## Step 1: Prepare network configuration
 

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

@@ -0,0 +1,15 @@
+package metabase
+
+import "github.com/spf13/cobra"
+
+// RootCmd is a root command of config section.
+var RootCmd = &cobra.Command{
+	Use:   "metabase",
+	Short: "Section for metabase commands",
+}
+
+func init() {
+	RootCmd.AddCommand(UpgradeCmd)
+
+	initUpgradeCommand()
+}

cmd/frostfs-adm/internal/modules/metabase/upgrade.go

@@ -0,0 +1,99 @@
+package metabase
+
+import (
+	"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"
+	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"
+	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
+	"github.com/spf13/cobra"
+	"golang.org/x/sync/errgroup"
+)
+
+const (
+	pathFlag      = "path"
+	noCompactFlag = "no-compact"
+)
+
+var errNoPathsFound = errors.New("no metabase paths found")
+
+var path string
+
+var UpgradeCmd = &cobra.Command{
+	Use:   "upgrade",
+	Short: "Upgrade metabase to latest version",
+	RunE:  upgrade,
+}
+
+func upgrade(cmd *cobra.Command, _ []string) error {
+	configFile, err := cmd.Flags().GetString(commonflags.ConfigFlag)
+	if err != nil {
+		return err
+	}
+	configDir, err := cmd.Flags().GetString(commonflags.ConfigDirFlag)
+	if err != nil {
+		return err
+	}
+	noCompact, _ := cmd.Flags().GetBool(noCompactFlag)
+	var paths []string
+	if path != "" {
+		paths = append(paths, path)
+	}
+	appCfg := config.New(configFile, configDir, config.EnvPrefix)
+	if err := engineconfig.IterateShards(appCfg, false, func(sc *shardconfig.Config) error {
+		paths = append(paths, sc.Metabase().Path())
+		return nil
+	}); err != nil {
+		return fmt.Errorf("failed to get metabase paths: %w", err)
+	}
+	if len(paths) == 0 {
+		return errNoPathsFound
+	}
+	cmd.Println("found", len(paths), "metabases:")
+	for i, path := range paths {
+		cmd.Println(i+1, ":", path)
+	}
+	result := make(map[string]bool)
+	var resultGuard sync.Mutex
+	eg, ctx := errgroup.WithContext(cmd.Context())
+	for _, path := range paths {
+		eg.Go(func() error {
+			var success bool
+			cmd.Println("upgrading metabase", path, "...")
+			if err := meta.Upgrade(ctx, path, !noCompact, func(a ...any) {
+				cmd.Println(append([]any{time.Now().Format(time.RFC3339), ":", path, ":"}, a...)...)
+			}); err != nil {
+				cmd.Println("error: failed to upgrade metabase", path, ":", err)
+			} else {
+				success = true
+				cmd.Println("metabase", path, "upgraded successfully")
+			}
+			resultGuard.Lock()
+			result[path] = success
+			resultGuard.Unlock()
+			return nil
+		})
+	}
+	if err := eg.Wait(); err != nil {
+		return err
+	}
+	for mb, ok := range result {
+		if ok {
+			cmd.Println(mb, ": success")
+		} else {
+			cmd.Println(mb, ": failed")
+		}
+	}
+	return nil
+}
+
+func initUpgradeCommand() {
+	flags := UpgradeCmd.Flags()
+	flags.StringVar(&path, pathFlag, "", "Path to metabase file")
+	flags.Bool(noCompactFlag, false, "Do not compact upgraded metabase file")
+}

cmd/frostfs-adm/internal/modules/morph/ape/ape_util.go

@@ -38,6 +38,12 @@ var (
 func parseTarget(cmd *cobra.Command) policyengine.Target {
 	name, _ := cmd.Flags().GetString(targetNameFlag)
 	typ, err := parseTargetType(cmd)
+
+	// interpret "root" namespace as empty
+	if typ == policyengine.Namespace && name == "root" {
+		name = ""
+	}
+
 	commonCmd.ExitOnErr(cmd, "read target type error: %w", err)
 
 	return policyengine.Target{

cmd/frostfs-adm/internal/modules/morph/contract/dump_hashes.go

@@ -68,7 +68,7 @@ func dumpContractHashes(cmd *cobra.Command, _ []string) error {
 
 	if irSize != 0 {
 		bw.Reset()
-		for i := 0; i < irSize; i++ {
+		for i := range irSize {
 			emit.AppCall(bw.BinWriter, cs.Hash, "resolve", callflag.ReadOnly,
 				helper.GetAlphabetNNSDomain(i),
 				int64(nns.TXT))
@@ -79,7 +79,7 @@ func dumpContractHashes(cmd *cobra.Command, _ []string) error {
 			return fmt.Errorf("can't fetch info from NNS: %w", err)
 		}
 
-		for i := 0; i < irSize; i++ {
+		for i := range irSize {
 			info := contractDumpInfo{name: fmt.Sprintf("alphabet %d", i)}
 			if h, err := helper.ParseNNSResolveResult(alphaRes.Stack[i]); err == nil {
 				info.hash = h

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

@@ -73,7 +73,6 @@ func initializeWallets(v *viper.Viper, walletDir string, size int) ([]string, er
 			return nil, fmt.Errorf("can't fetch password: %w", err)
 		}
 
-		i := i
 		errG.Go(func() error {
 			p := filepath.Join(walletDir, innerring.GlagoliticLetter(i).String()+".json")
 			f, err := os.OpenFile(p, os.O_CREATE, 0o644)
@@ -107,7 +106,6 @@ func initializeWallets(v *viper.Viper, walletDir string, size int) ([]string, er
 	// Create consensus account with 2*N/3+1 multi-signature.
 	bftCount := smartcontract.GetDefaultHonestNodeCount(size)
 	for i := range wallets {
-		i := i
 		ps := pubs.Copy()
 		errG.Go(func() error {
 			if err := addMultisigAccount(wallets[i], majCount, constants.CommitteeAccountName, passwords[i], ps); err != nil {

cmd/frostfs-adm/internal/modules/morph/helper/local_client.go

@@ -224,7 +224,7 @@ func (l *LocalClient) CalculateNetworkFee(tx *transaction.Transaction) (int64, e
 					paramz = []manifest.Parameter{{Type: smartcontract.SignatureType}}
 				} else if nSigs, _, ok := vm.ParseMultiSigContract(w.VerificationScript); ok {
 					paramz = make([]manifest.Parameter, nSigs)
-					for j := 0; j < nSigs; j++ {
+					for j := range nSigs {
 						paramz[j] = manifest.Parameter{Type: smartcontract.SignatureType}
 					}
 				}

cmd/frostfs-adm/internal/modules/morph/helper/util.go

@@ -44,7 +44,7 @@ func openAlphabetWallets(v *viper.Viper, walletDir string) ([]*wallet.Wallet, er
 
 	var wallets []*wallet.Wallet
 	var letter string
-	for i := 0; i < constants.MaxAlphabetNodes; i++ {
+	for i := range constants.MaxAlphabetNodes {
 		letter = innerring.GlagoliticLetter(i).String()
 		p := filepath.Join(walletDir, letter+".json")
 		var w *wallet.Wallet

cmd/frostfs-adm/internal/modules/morph/initialize/initialize_test.go

@@ -113,7 +113,7 @@ func generateTestData(dir string, size int) error {
 	}
 
 	var pubs []string
-	for i := 0; i < size; i++ {
+	for i := range size {
 		p := filepath.Join(dir, innerring.GlagoliticLetter(i).String()+".json")
 		w, err := wallet.NewWalletFromFile(p)
 		if err != nil {
@@ -148,7 +148,7 @@ func generateTestData(dir string, size int) error {
 }
 
 func setTestCredentials(v *viper.Viper, size int) {
-	for i := 0; i < size; i++ {
+	for i := range size {
 		v.Set("credentials."+innerring.GlagoliticLetter(i).String(), strconv.FormatUint(uint64(i), 10))
 	}
 	v.Set("credentials.contract", constants.TestContractPassword)

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

cmd/frostfs-cli/internal/client/client.go

@@ -2,10 +2,13 @@ package internal
 
 import (
 	"bytes"
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"io"
+	"os"
+	"slices"
 	"sort"
 	"strings"
 
@@ -14,7 +17,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -189,54 +191,6 @@ func DeleteContainer(ctx context.Context, prm DeleteContainerPrm) (res DeleteCon
 	return
 }
 
-// EACLPrm groups parameters of EACL operation.
-type EACLPrm struct {
-	Client       *client.Client
-	ClientParams client.PrmContainerEACL
-}
-
-// EACLRes groups the resulting values of EACL operation.
-type EACLRes struct {
-	cliRes *client.ResContainerEACL
-}
-
-// EACL returns requested eACL table.
-func (x EACLRes) EACL() eacl.Table {
-	return x.cliRes.Table()
-}
-
-// EACL reads eACL table from FrostFS by container ID.
-//
-// Returns any error which prevented the operation from completing correctly in error return.
-func EACL(ctx context.Context, prm EACLPrm) (res EACLRes, err error) {
-	res.cliRes, err = prm.Client.ContainerEACL(ctx, prm.ClientParams)
-
-	return
-}
-
-// SetEACLPrm groups parameters of SetEACL operation.
-type SetEACLPrm struct {
-	Client       *client.Client
-	ClientParams client.PrmContainerSetEACL
-}
-
-// SetEACLRes groups the resulting values of SetEACL operation.
-type SetEACLRes struct{}
-
-// SetEACL requests to save an eACL table in FrostFS.
-//
-// Operation is asynchronous and no guaranteed even in the absence of errors.
-// The required time is also not predictable.
-//
-// Success can be verified by reading by container identifier.
-//
-// Returns any error which prevented the operation from completing correctly in error return.
-func SetEACL(ctx context.Context, prm SetEACLPrm) (res SetEACLRes, err error) {
-	_, err = prm.Client.ContainerSetEACL(ctx, prm.ClientParams)
-
-	return
-}
-
 // NetworkInfoPrm groups parameters of NetworkInfo operation.
 type NetworkInfoPrm struct {
 	Client       *client.Client
@@ -712,7 +666,7 @@ func SearchObjects(ctx context.Context, prm SearchObjectsPrm) (*SearchObjectsRes
 
 	for {
 		n, ok = rdr.Read(buf)
-		for i := 0; i < n; i++ {
+		for i := range n {
 			list = append(list, buf[i])
 		}
 		if !ok {
@@ -892,3 +846,65 @@ func SyncContainerSettings(ctx context.Context, prm SyncContainerPrm) (*SyncCont
 
 	return new(SyncContainerRes), nil
 }
+
+// PatchObjectPrm groups parameters of PatchObject operation.
+type PatchObjectPrm struct {
+	commonObjectPrm
+	objectAddressPrm
+
+	NewAttributes []objectSDK.Attribute
+
+	ReplaceAttribute bool
+
+	PayloadPatches []PayloadPatch
+}
+
+type PayloadPatch struct {
+	Range objectSDK.Range
+
+	PayloadPath string
+}
+
+type PatchRes struct {
+	OID oid.ID
+}
+
+func Patch(ctx context.Context, prm PatchObjectPrm) (*PatchRes, error) {
+	patchPrm := client.PrmObjectPatch{
+		XHeaders:    prm.xHeaders,
+		BearerToken: prm.bearerToken,
+		Session:     prm.sessionToken,
+		Address:     prm.objAddr,
+	}
+
+	slices.SortFunc(prm.PayloadPatches, func(a, b PayloadPatch) int {
+		return cmp.Compare(a.Range.GetOffset(), b.Range.GetOffset())
+	})
+
+	patcher, err := prm.cli.ObjectPatchInit(ctx, patchPrm)
+	if err != nil {
+		return nil, fmt.Errorf("init payload reading: %w", err)
+	}
+
+	if patcher.PatchAttributes(ctx, prm.NewAttributes, prm.ReplaceAttribute) {
+		for _, pp := range prm.PayloadPatches {
+			payloadFile, err := os.OpenFile(pp.PayloadPath, os.O_RDONLY, os.ModePerm)
+			if err != nil {
+				return nil, err
+			}
+			applied := patcher.PatchPayload(ctx, &pp.Range, payloadFile)
+			_ = payloadFile.Close()
+			if !applied {
+				break
+			}
+		}
+	}
+
+	res, err := patcher.Close(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return &PatchRes{
+		OID: res.ObjectID(),
+	}, nil
+}

cmd/frostfs-cli/internal/key/key_test.go

@@ -24,6 +24,8 @@ var testCmd = &cobra.Command{
 }
 
 func Test_getOrGenerate(t *testing.T) {
+	t.Cleanup(viper.Reset)
+
 	dir := t.TempDir()
 
 	wallPath := filepath.Join(dir, "wallet.json")

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

@@ -139,7 +139,7 @@ It will be stored in sidechain when inner ring will accepts it.`,
 				},
 			}
 
-			for i := 0; i < awaitTimeout; i++ {
+			for range awaitTimeout {
 				time.Sleep(1 * time.Second)
 
 				_, err := internalclient.GetContainer(cmd.Context(), getPrm)

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

@@ -110,7 +110,7 @@ Only owner of the container has a permission to remove container.`,
 				},
 			}
 
-			for i := 0; i < awaitTimeout; i++ {
+			for range awaitTimeout {
 				time.Sleep(1 * time.Second)
 
 				_, err := internalclient.GetContainer(cmd.Context(), getPrm)

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

@@ -1,68 +0,0 @@
-package container
-
-import (
-	"os"
-
-	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
-	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
-	"github.com/spf13/cobra"
-)
-
-var getExtendedACLCmd = &cobra.Command{
-	Use:   "get-eacl",
-	Short: "Get extended ACL table of container",
-	Long:  `Get extended ACL table of container`,
-	Run: func(cmd *cobra.Command, _ []string) {
-		id := parseContainerID(cmd)
-		pk := key.GetOrGenerate(cmd)
-		cli := internalclient.GetSDKClientByFlag(cmd, pk, commonflags.RPC)
-
-		eaclPrm := internalclient.EACLPrm{
-			Client: cli,
-			ClientParams: client.PrmContainerEACL{
-				ContainerID: &id,
-			},
-		}
-
-		res, err := internalclient.EACL(cmd.Context(), eaclPrm)
-		commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
-
-		eaclTable := res.EACL()
-
-		if containerPathTo == "" {
-			cmd.Println("eACL: ")
-			common.PrettyPrintJSON(cmd, &eaclTable, "eACL")
-
-			return
-		}
-
-		var data []byte
-
-		if containerJSON {
-			data, err = eaclTable.MarshalJSON()
-			commonCmd.ExitOnErr(cmd, "can't encode to JSON: %w", err)
-		} else {
-			data, err = eaclTable.Marshal()
-			commonCmd.ExitOnErr(cmd, "can't encode to binary: %w", err)
-		}
-
-		cmd.Println("dumping data to file:", containerPathTo)
-
-		err = os.WriteFile(containerPathTo, data, 0o644)
-		commonCmd.ExitOnErr(cmd, "could not write eACL to file: %w", err)
-	},
-}
-
-func initContainerGetEACLCmd() {
-	commonflags.Init(getExtendedACLCmd)
-
-	flags := getExtendedACLCmd.Flags()
-
-	flags.StringVar(&containerID, commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
-	flags.StringVar(&containerPathTo, "to", "", "Path to dump encoded container (default: binary encoded)")
-	flags.BoolVar(&containerJSON, commonflags.JSON, false, "Encode EACL table in json format")
-}

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

@@ -1,9 +1,6 @@
 package container
 
 import (
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
 	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
@@ -70,7 +67,6 @@ var listContainersCmd = &cobra.Command{
 				continue
 			}
 
-			cnrID := cnrID
 			prmGet.ClientParams.ContainerID = &cnrID
 			res, err := internalclient.GetContainer(cmd.Context(), prmGet)
 			if err != nil {
@@ -85,12 +81,8 @@ var listContainersCmd = &cobra.Command{
 			cmd.Println(cnrID.String())
 
 			if flagVarListPrintAttr {
-				cnr.IterateAttributes(func(key, val string) {
-					if !strings.HasPrefix(key, container.SysAttributePrefix) && !strings.HasPrefix(key, container.SysAttributePrefixNeoFS) {
-						// FIXME(@cthulhu-rider): https://git.frostfs.info/TrueCloudLab/frostfs-sdk-go/issues/97
-						//	Use dedicated method to skip system attributes.
-						cmd.Printf("  %s: %s\n", key, val)
-					}
+				cnr.IterateUserAttributes(func(key, val string) {
+					cmd.Printf("  %s: %s\n", key, val)
 				})
 			}
 		}

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

@@ -25,8 +25,6 @@ func init() {
 		deleteContainerCmd,
 		listContainerObjectsCmd,
 		getContainerInfoCmd,
-		getExtendedACLCmd,
-		setExtendedACLCmd,
 		containerNodesCmd,
 		policyPlaygroundCmd,
 	}
@@ -38,8 +36,6 @@ func init() {
 	initContainerDeleteCmd()
 	initContainerListObjectsCmd()
 	initContainerInfoCmd()
-	initContainerGetEACLCmd()
-	initContainerSetEACLCmd()
 	initContainerNodesCmd()
 	initContainerPolicyPlaygroundCmd()
 
@@ -53,7 +49,6 @@ func init() {
 	}{
 		{createContainerCmd, "PUT"},
 		{deleteContainerCmd, "DELETE"},
-		{setExtendedACLCmd, "SETEACL"},
 	} {
 		commonflags.InitSession(el.cmd, "container "+el.verb)
 	}

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

@@ -1,108 +0,0 @@
-package container
-
-import (
-	"bytes"
-	"errors"
-	"time"
-
-	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
-	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
-	"github.com/spf13/cobra"
-)
-
-var flagVarsSetEACL struct {
-	noPreCheck bool
-
-	srcPath string
-}
-
-var setExtendedACLCmd = &cobra.Command{
-	Use:   "set-eacl",
-	Short: "Set new extended ACL table for container",
-	Long: `Set new extended ACL table for container.
-Container ID in EACL table will be substituted with ID from the CLI.`,
-	Run: func(cmd *cobra.Command, _ []string) {
-		id := parseContainerID(cmd)
-		eaclTable := common.ReadEACL(cmd, flagVarsSetEACL.srcPath)
-
-		tok := getSession(cmd)
-
-		eaclTable.SetCID(id)
-
-		pk := key.GetOrGenerate(cmd)
-		cli := internalclient.GetSDKClientByFlag(cmd, pk, commonflags.RPC)
-
-		if !flagVarsSetEACL.noPreCheck {
-			cmd.Println("Checking the ability to modify access rights in the container...")
-
-			extendable, err := internalclient.IsACLExtendable(cmd.Context(), cli, id)
-			commonCmd.ExitOnErr(cmd, "Extensibility check failure: %w", err)
-
-			if !extendable {
-				commonCmd.ExitOnErr(cmd, "", errors.New("container ACL is immutable"))
-			}
-
-			cmd.Println("ACL extension is enabled in the container, continue processing.")
-		}
-
-		setEACLPrm := internalclient.SetEACLPrm{
-			Client: cli,
-			ClientParams: client.PrmContainerSetEACL{
-				Table:   eaclTable,
-				Session: tok,
-			},
-		}
-
-		_, err := internalclient.SetEACL(cmd.Context(), setEACLPrm)
-		commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
-
-		if containerAwait {
-			exp, err := eaclTable.Marshal()
-			commonCmd.ExitOnErr(cmd, "broken EACL table: %w", err)
-
-			cmd.Println("awaiting...")
-
-			getEACLPrm := internalclient.EACLPrm{
-				Client: cli,
-				ClientParams: client.PrmContainerEACL{
-					ContainerID: &id,
-				},
-			}
-
-			for i := 0; i < awaitTimeout; i++ {
-				time.Sleep(1 * time.Second)
-
-				res, err := internalclient.EACL(cmd.Context(), getEACLPrm)
-				if err == nil {
-					// compare binary values because EACL could have been set already
-					table := res.EACL()
-					got, err := table.Marshal()
-					if err != nil {
-						continue
-					}
-
-					if bytes.Equal(exp, got) {
-						cmd.Println("EACL has been persisted on sidechain")
-						return
-					}
-				}
-			}
-
-			commonCmd.ExitOnErr(cmd, "", errSetEACLTimeout)
-		}
-	},
-}
-
-func initContainerSetEACLCmd() {
-	commonflags.Init(setExtendedACLCmd)
-
-	flags := setExtendedACLCmd.Flags()
-	flags.StringVar(&containerID, commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
-	flags.StringVar(&flagVarsSetEACL.srcPath, "table", "", "path to file with JSON or binary encoded EACL table")
-	flags.BoolVar(&containerAwait, "await", false, "block execution until EACL is persisted")
-	flags.BoolVar(&flagVarsSetEACL.noPreCheck, "no-precheck", false, "do not pre-check the extensibility of the container ACL")
-}

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

@@ -18,9 +18,8 @@ const (
 )
 
 var (
-	errCreateTimeout  = errors.New("timeout: container has not been persisted on sidechain")
-	errDeleteTimeout  = errors.New("timeout: container has not been removed from sidechain")
-	errSetEACLTimeout = errors.New("timeout: EACL has not been persisted on sidechain")
+	errCreateTimeout = errors.New("timeout: container has not been persisted on sidechain")
+	errDeleteTimeout = errors.New("timeout: container has not been removed from sidechain")
 )
 
 func parseContainerID(cmd *cobra.Command) cid.ID {

cmd/frostfs-cli/modules/control/rebuild_shards.go

@@ -0,0 +1,88 @@
+package control
+
+import (
+	"fmt"
+
+	rawclient "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
+	"github.com/mr-tron/base58"
+	"github.com/spf13/cobra"
+)
+
+const (
+	fillPercentFlag = "fill_percent"
+)
+
+var shardsRebuildCmd = &cobra.Command{
+	Use:   "rebuild",
+	Short: "Rebuild shards",
+	Long:  "Rebuild reclaims storage occupied by dead objects and adjusts the storage structure according to the configuration (for blobovnicza only now)",
+	Run:   shardsRebuild,
+}
+
+func shardsRebuild(cmd *cobra.Command, _ []string) {
+	pk := key.Get(cmd)
+
+	req := &control.StartShardRebuildRequest{
+		Body: &control.StartShardRebuildRequest_Body{
+			Shard_ID:          getShardIDList(cmd),
+			TargetFillPercent: getFillPercentValue(cmd),
+			ConcurrencyLimit:  getConcurrencyValue(cmd),
+		},
+	}
+
+	signRequest(cmd, pk, req)
+
+	cli := getClient(cmd, pk)
+
+	var resp *control.StartShardRebuildResponse
+	var err error
+	err = cli.ExecRaw(func(client *rawclient.Client) error {
+		resp, err = control.StartShardRebuild(client, req)
+		return err
+	})
+	commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
+
+	verifyResponse(cmd, resp.GetSignature(), resp.GetBody())
+
+	var success, failed uint
+	for _, res := range resp.GetBody().GetResults() {
+		if res.GetSuccess() {
+			success++
+			cmd.Printf("Shard %s: OK\n", base58.Encode(res.GetShard_ID()))
+		} else {
+			failed++
+			cmd.Printf("Shard %s: failed with error %q\n", base58.Encode(res.GetShard_ID()), res.GetError())
+		}
+	}
+	cmd.Printf("Total: %d success, %d failed\n", success, failed)
+}
+
+func getFillPercentValue(cmd *cobra.Command) uint32 {
+	v, _ := cmd.Flags().GetUint32(fillPercentFlag)
+	if v <= 0 || v > 100 {
+		commonCmd.ExitOnErr(cmd, "invalid fill_percent value", fmt.Errorf("fill_percent value must be (0, 100], current value: %d", v))
+	}
+	return v
+}
+
+func getConcurrencyValue(cmd *cobra.Command) uint32 {
+	v, _ := cmd.Flags().GetUint32(concurrencyFlag)
+	if v <= 0 || v > 10000 {
+		commonCmd.ExitOnErr(cmd, "invalid concurrency value", fmt.Errorf("concurrency value must be (0, 10 000], current value: %d", v))
+	}
+	return v
+}
+
+func initControlShardRebuildCmd() {
+	initControlFlags(shardsRebuildCmd)
+
+	flags := shardsRebuildCmd.Flags()
+	flags.StringSlice(shardIDFlag, nil, "List of shard IDs in base58 encoding")
+	flags.Bool(shardAllFlag, false, "Process all shards")
+	flags.Uint32(fillPercentFlag, 80, "Target fill percent to reclaim space")
+	flags.Uint32(concurrencyFlag, 20, "Maximum count of concurrently rebuilding files")
+	setShardModeCmd.MarkFlagsMutuallyExclusive(shardIDFlag, shardAllFlag)
+}

cmd/frostfs-cli/modules/control/set_netmap_status.go

@@ -84,7 +84,7 @@ func setNetmapStatus(cmd *cobra.Command, _ []string) {
 		body.SetStatus(control.NetmapStatus_MAINTENANCE)
 
 		if force {
-			body.SetForceMaintenance()
+			body.SetForceMaintenance(true)
 			common.PrintVerbose(cmd, "Local maintenance will be forced.")
 		}
 		targetStatus = control.NetmapStatus_MAINTENANCE

cmd/frostfs-cli/modules/control/shards.go

@@ -19,6 +19,7 @@ func initControlShardsCmd() {
 	shardsCmd.AddCommand(doctorCmd)
 	shardsCmd.AddCommand(writecacheShardCmd)
 	shardsCmd.AddCommand(shardsDetachCmd)
+	shardsCmd.AddCommand(shardsRebuildCmd)
 
 	initControlShardsListCmd()
 	initControlSetShardModeCmd()
@@ -28,4 +29,5 @@ func initControlShardsCmd() {
 	initControlDoctorCmd()
 	initControlShardsWritecacheCmd()
 	initControlShardsDetachCmd()
+	initControlShardRebuildCmd()
 }

cmd/frostfs-cli/modules/control/shards_list.go

@@ -61,17 +61,18 @@ func listShards(cmd *cobra.Command, _ []string) {
 	}
 }
 
-func prettyPrintShardsJSON(cmd *cobra.Command, ii []*control.ShardInfo) {
+func prettyPrintShardsJSON(cmd *cobra.Command, ii []control.ShardInfo) {
 	out := make([]map[string]any, 0, len(ii))
 	for _, i := range ii {
 		out = append(out, map[string]any{
-			"shard_id":    base58.Encode(i.GetShard_ID()),
-			"mode":        shardModeToString(i.GetMode()),
-			"metabase":    i.GetMetabasePath(),
-			"blobstor":    i.GetBlobstor(),
-			"writecache":  i.GetWritecachePath(),
-			"pilorama":    i.GetPiloramaPath(),
-			"error_count": i.GetErrorCount(),
+			"shard_id":               base58.Encode(i.GetShard_ID()),
+			"mode":                   shardModeToString(i.GetMode()),
+			"metabase":               i.GetMetabasePath(),
+			"blobstor":               i.GetBlobstor(),
+			"writecache":             i.GetWritecachePath(),
+			"pilorama":               i.GetPiloramaPath(),
+			"error_count":            i.GetErrorCount(),
+			"evacuation_in_progress": i.GetEvacuationInProgress(),
 		})
 	}
 
@@ -83,7 +84,7 @@ func prettyPrintShardsJSON(cmd *cobra.Command, ii []*control.ShardInfo) {
 	cmd.Print(buf.String()) // pretty printer emits newline, so no need for Println
 }
 
-func prettyPrintShards(cmd *cobra.Command, ii []*control.ShardInfo) {
+func prettyPrintShards(cmd *cobra.Command, ii []control.ShardInfo) {
 	for _, i := range ii {
 		pathPrinter := func(name, path string) string {
 			if path == "" {
@@ -105,7 +106,8 @@ func prettyPrintShards(cmd *cobra.Command, ii []*control.ShardInfo) {
 			sb.String()+
 			pathPrinter("Write-cache", i.GetWritecachePath())+
 			pathPrinter("Pilorama", i.GetPiloramaPath())+
-			fmt.Sprintf("Error count: %d\n", i.GetErrorCount()),
+			fmt.Sprintf("Error count: %d\n", i.GetErrorCount())+
+			fmt.Sprintf("Evacuation in progress: %t\n", i.GetEvacuationInProgress()),
 			base58.Encode(i.GetShard_ID()),
 			shardModeToString(i.GetMode()),
 		)
@@ -121,7 +123,7 @@ func shardModeToString(m control.ShardMode) string {
 	return "unknown"
 }
 
-func sortShardsByID(ii []*control.ShardInfo) {
+func sortShardsByID(ii []control.ShardInfo) {
 	sort.Slice(ii, func(i, j int) bool {
 		return bytes.Compare(ii[i].GetShard_ID(), ii[j].GetShard_ID()) < 0
 	})

cmd/frostfs-cli/modules/control/shards_set_mode.go

@@ -117,10 +117,10 @@ func setShardMode(cmd *cobra.Command, _ []string) {
 	req.SetBody(body)
 
 	body.SetMode(mode)
-	body.SetShardIDList(getShardIDList(cmd))
+	body.SetShard_ID(getShardIDList(cmd))
 
 	reset, _ := cmd.Flags().GetBool(shardClearErrorsFlag)
-	body.ClearErrorCounter(reset)
+	body.SetResetErrorCounter(reset)
 
 	signRequest(cmd, pk, req)
 

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

@@ -44,7 +44,7 @@ func verifyResponse(cmd *cobra.Command,
 		GetSign() []byte
 	},
 	body interface {
-		StableMarshal([]byte) []byte
+		MarshalProtobuf([]byte) []byte
 	},
 ) {
 	if sigControl == nil {
@@ -60,7 +60,7 @@ func verifyResponse(cmd *cobra.Command,
 	var sig frostfscrypto.Signature
 	commonCmd.ExitOnErr(cmd, "can't read signature: %w", sig.ReadFromV2(sigV2))
 
-	if !sig.Verify(body.StableMarshal(nil)) {
+	if !sig.Verify(body.MarshalProtobuf(nil)) {
 		commonCmd.ExitOnErr(cmd, "", errors.New("invalid response signature"))
 	}
 }

cmd/frostfs-cli/modules/control/writecache.go

@@ -9,6 +9,12 @@ import (
 	"github.com/spf13/cobra"
 )
 
+const (
+	asyncFlag       = "async"
+	restoreModeFlag = "restore-mode"
+	shrinkFlag      = "shrink"
+)
+
 var writecacheShardCmd = &cobra.Command{
 	Use:   "writecache",
 	Short: "Operations with storage node's write-cache",
@@ -26,10 +32,16 @@ func sealWritecache(cmd *cobra.Command, _ []string) {
 	pk := key.Get(cmd)
 
 	ignoreErrors, _ := cmd.Flags().GetBool(ignoreErrorsFlag)
+	async, _ := cmd.Flags().GetBool(asyncFlag)
+	restoreMode, _ := cmd.Flags().GetBool(restoreModeFlag)
+	shrink, _ := cmd.Flags().GetBool(shrinkFlag)
 
 	req := &control.SealWriteCacheRequest{Body: &control.SealWriteCacheRequest_Body{
 		Shard_ID:     getShardIDList(cmd),
 		IgnoreErrors: ignoreErrors,
+		Async:        async,
+		RestoreMode:  restoreMode,
+		Shrink:       shrink,
 	}}
 
 	signRequest(cmd, pk, req)
@@ -68,6 +80,9 @@ func initControlShardsWritecacheCmd() {
 	ff.StringSlice(shardIDFlag, nil, "List of shard IDs in base58 encoding")
 	ff.Bool(shardAllFlag, false, "Process all shards")
 	ff.Bool(ignoreErrorsFlag, true, "Skip invalid/unreadable objects")
+	ff.Bool(asyncFlag, false, "Run operation in background")
+	ff.Bool(restoreModeFlag, false, "Restore writecache's mode after sealing")
+	ff.Bool(shrinkFlag, false, "Shrink writecache's internal storage")
 
 	sealWritecacheShardCmd.MarkFlagsMutuallyExclusive(shardIDFlag, shardAllFlag)
 }

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

@@ -30,7 +30,8 @@ import (
 )
 
 const (
-	verifyPresenceAllFlag = "verify-presence-all"
+	verifyPresenceAllFlag       = "verify-presence-all"
+	preferInternalAddressesFlag = "prefer-internal-addresses"
 )
 
 var (
@@ -97,6 +98,7 @@ func initObjectNodesCmd() {
 
 	flags.Bool(verifyPresenceAllFlag, false, "Verify the actual presence of the object on all netmap nodes.")
 	flags.Bool(commonflags.JSON, false, "Print information about the object placement as json.")
+	flags.Bool(preferInternalAddressesFlag, false, "Use internal addresses first to get object info.")
 }
 
 func objectNodes(cmd *cobra.Command, _ []string) {
@@ -170,7 +172,7 @@ func getComplexObjectParts(cmd *cobra.Command, cnrID cid.ID, objID oid.ID, cli *
 func getCompexObjectMembers(cmd *cobra.Command, cnrID cid.ID, objID oid.ID, cli *client.Client, prmHead internalclient.HeadObjectPrm, errSplitInfo *objectSDK.SplitInfoError) []oid.ID {
 	splitInfo := errSplitInfo.SplitInfo()
 
-	if members, ok := tryGetSplitMembersByLinkingObject(cmd, splitInfo, prmHead, cnrID, false); ok {
+	if members, ok := tryGetSplitMembersByLinkingObject(cmd, splitInfo, prmHead, cnrID); ok {
 		return members
 	}
 
@@ -183,6 +185,7 @@ func getCompexObjectMembers(cmd *cobra.Command, cnrID cid.ID, objID oid.ID, cli
 
 func flattenComplexMembersIfECContainer(cmd *cobra.Command, cnrID cid.ID, members []oid.ID, prmHead internalclient.HeadObjectPrm) []phyObject {
 	result := make([]phyObject, 0, len(members))
+	var hasNonEC, hasEC bool
 	var resultGuard sync.Mutex
 
 	if len(members) == 0 {
@@ -191,31 +194,8 @@ func flattenComplexMembersIfECContainer(cmd *cobra.Command, cnrID cid.ID, member
 
 	prmHead.SetRawFlag(true) // to get an error instead of whole object
 
-	first := members[0]
-	var addrObj oid.Address
-	addrObj.SetContainer(cnrID)
-	addrObj.SetObject(first)
-	prmHead.SetAddress(addrObj)
-
-	_, err := internalclient.HeadObject(cmd.Context(), prmHead)
-	var ecInfoError *objectSDK.ECInfoError
-	if errors.As(err, &ecInfoError) {
-		chunks := getECObjectChunks(cmd, cnrID, first, ecInfoError)
-		result = append(result, chunks...)
-	} else if err == nil { // not EC object, so all members must be phy objects
-		for _, member := range members {
-			result = append(result, phyObject{
-				containerID: cnrID,
-				objectID:    member,
-			})
-		}
-		return result
-	} else {
-		commonCmd.ExitOnErr(cmd, "failed to flatten parts of complex object: %w", err)
-	}
-
 	eg, egCtx := errgroup.WithContext(cmd.Context())
-	for idx := 1; idx < len(members); idx++ {
+	for idx := range len(members) {
 		partObjID := members[idx]
 
 		eg.Go(func() error {
@@ -225,24 +205,44 @@ func flattenComplexMembersIfECContainer(cmd *cobra.Command, cnrID cid.ID, member
 			partAddr.SetObject(partObjID)
 			partHeadPrm.SetAddress(partAddr)
 
-			_, err := internalclient.HeadObject(egCtx, partHeadPrm)
-			var ecInfoError *objectSDK.ECInfoError
-			if errors.As(err, &ecInfoError) {
-				chunks := getECObjectChunks(cmd, cnrID, partObjID, ecInfoError)
-
-				resultGuard.Lock()
-				defer resultGuard.Unlock()
-				result = append(result, chunks...)
-
-				return nil
-			} else if err == nil {
-				return errMalformedComplexObject
+			obj, err := internalclient.HeadObject(egCtx, partHeadPrm)
+			if err != nil {
+				var ecInfoError *objectSDK.ECInfoError
+				if errors.As(err, &ecInfoError) {
+					resultGuard.Lock()
+					defer resultGuard.Unlock()
+					result = append(result, getECObjectChunks(cmd, cnrID, partObjID, ecInfoError)...)
+					hasEC = true
+					return nil
+				}
+				return err
 			}
-			return err
+
+			if obj.Header().Type() != objectSDK.TypeRegular {
+				commonCmd.ExitOnErr(cmd, "failed to flatten parts of complex object: %w", fmt.Errorf("object '%s' with type '%s' is not supported as part of complex object", partAddr, obj.Header().Type()))
+			}
+
+			if len(obj.Header().Children()) > 0 {
+				// linking object is not data object, so skip it
+				return nil
+			}
+
+			resultGuard.Lock()
+			defer resultGuard.Unlock()
+			result = append(result, phyObject{
+				containerID: cnrID,
+				objectID:    partObjID,
+			})
+			hasNonEC = true
+
+			return nil
 		})
 	}
 
 	commonCmd.ExitOnErr(cmd, "failed to flatten parts of complex object: %w", eg.Wait())
+	if hasEC && hasNonEC {
+		commonCmd.ExitOnErr(cmd, "failed to flatten parts of complex object: %w", errMalformedComplexObject)
+	}
 	return result
 }
 
@@ -393,8 +393,6 @@ func getActualPlacement(cmd *cobra.Command, netmap *netmapSDK.NetMap, pk *ecdsa.
 
 	eg, egCtx := errgroup.WithContext(cmd.Context())
 	for _, cand := range candidates {
-		cand := cand
-
 		eg.Go(func() error {
 			cli, err := createClient(egCtx, cmd, cand, pk)
 			if err != nil {
@@ -405,7 +403,6 @@ func getActualPlacement(cmd *cobra.Command, netmap *netmapSDK.NetMap, pk *ecdsa.
 			}
 
 			for _, object := range objects {
-				object := object
 				eg.Go(func() error {
 					stored, err := isObjectStoredOnNode(egCtx, cmd, object.containerID, object.objectID, cli, pk)
 					resultMtx.Lock()
@@ -449,11 +446,20 @@ func getNodesToCheckObjectExistance(cmd *cobra.Command, netmap *netmapSDK.NetMap
 func createClient(ctx context.Context, cmd *cobra.Command, candidate netmapSDK.NodeInfo, pk *ecdsa.PrivateKey) (*client.Client, error) {
 	var cli *client.Client
 	var addresses []string
-	candidate.IterateNetworkEndpoints(func(s string) bool {
-		addresses = append(addresses, s)
-		return false
-	})
-	addresses = append(addresses, candidate.ExternalAddresses()...)
+	if preferInternal, _ := cmd.Flags().GetBool(preferInternalAddressesFlag); preferInternal {
+		candidate.IterateNetworkEndpoints(func(s string) bool {
+			addresses = append(addresses, s)
+			return false
+		})
+		addresses = append(addresses, candidate.ExternalAddresses()...)
+	} else {
+		addresses = append(addresses, candidate.ExternalAddresses()...)
+		candidate.IterateNetworkEndpoints(func(s string) bool {
+			addresses = append(addresses, s)
+			return false
+		})
+	}
+
 	var lastErr error
 	for _, address := range addresses {
 		var networkAddr network.Address

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

@@ -0,0 +1,151 @@
+package object
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	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"
+	"github.com/spf13/cobra"
+)
+
+const (
+	newAttrsFlagName     = "new-attrs"
+	replaceAttrsFlagName = "replace-attrs"
+	rangeFlagName        = "range"
+	payloadFlagName      = "payload"
+)
+
+var objectPatchCmd = &cobra.Command{
+	Use:   "patch",
+	Run:   patch,
+	Short: "Patch FrostFS object",
+	Long:  "Patch FrostFS object. Each range passed to the command requires to pass a corresponding patch payload.",
+	Example: `
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --new-attrs 'key1=val1,key2=val2' --replace-attrs
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --range offX:lnX --payload /path/to/payloadX --range offY:lnY --payload /path/to/payloadY
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --new-attrs 'key1=val1,key2=val2' --replace-attrs --range offX:lnX --payload /path/to/payload
+`,
+}
+
+func initObjectPatchCmd() {
+	commonflags.Init(objectPatchCmd)
+	initFlagSession(objectPatchCmd, "PATCH")
+
+	flags := objectPatchCmd.Flags()
+
+	flags.String(commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
+	_ = objectRangeCmd.MarkFlagRequired(commonflags.CIDFlag)
+
+	flags.String(commonflags.OIDFlag, "", commonflags.OIDFlagUsage)
+	_ = objectRangeCmd.MarkFlagRequired(commonflags.OIDFlag)
+
+	flags.String(newAttrsFlagName, "", "New object attributes in form of Key1=Value1,Key2=Value2")
+	flags.Bool(replaceAttrsFlagName, false, "Replace object attributes by new ones.")
+	flags.StringSlice(rangeFlagName, []string{}, "Range to which patch payload is applied. Format: offset:length")
+	flags.StringSlice(payloadFlagName, []string{}, "Path to file with patch payload.")
+}
+
+func patch(cmd *cobra.Command, _ []string) {
+	var cnr cid.ID
+	var obj oid.ID
+
+	objAddr := readObjectAddress(cmd, &cnr, &obj)
+
+	ranges, err := getRangeSlice(cmd)
+	commonCmd.ExitOnErr(cmd, "", err)
+
+	payloads := patchPayloadPaths(cmd)
+
+	if len(ranges) != len(payloads) {
+		commonCmd.ExitOnErr(cmd, "", fmt.Errorf("the number of ranges and payloads are not equal: ranges = %d, payloads = %d", len(ranges), len(payloads)))
+	}
+
+	newAttrs, err := parseNewObjectAttrs(cmd)
+	commonCmd.ExitOnErr(cmd, "can't parse new object attributes: %w", err)
+	replaceAttrs, _ := cmd.Flags().GetBool(replaceAttrsFlagName)
+
+	pk := key.GetOrGenerate(cmd)
+
+	cli := internalclient.GetSDKClientByFlag(cmd, pk, commonflags.RPC)
+
+	var prm internalclient.PatchObjectPrm
+	prm.SetClient(cli)
+	Prepare(cmd, &prm)
+	ReadOrOpenSession(cmd, &prm, pk, cnr, nil)
+
+	prm.SetAddress(objAddr)
+	prm.NewAttributes = newAttrs
+	prm.ReplaceAttribute = replaceAttrs
+
+	for i := range ranges {
+		prm.PayloadPatches = append(prm.PayloadPatches, internalclient.PayloadPatch{
+			Range:       ranges[i],
+			PayloadPath: payloads[i],
+		})
+	}
+
+	res, err := internalclient.Patch(cmd.Context(), prm)
+	if err != nil {
+		commonCmd.ExitOnErr(cmd, "can't patch the object: %w", err)
+	}
+	cmd.Println("Patched object ID: ", res.OID.EncodeToString())
+}
+
+func parseNewObjectAttrs(cmd *cobra.Command) ([]objectSDK.Attribute, error) {
+	var rawAttrs []string
+
+	raw := cmd.Flag(newAttrsFlagName).Value.String()
+	if len(raw) != 0 {
+		rawAttrs = strings.Split(raw, ",")
+	}
+
+	attrs := make([]objectSDK.Attribute, len(rawAttrs), len(rawAttrs)+2) // name + timestamp attributes
+	for i := range rawAttrs {
+		k, v, found := strings.Cut(rawAttrs[i], "=")
+		if !found {
+			return nil, fmt.Errorf("invalid attribute format: %s", rawAttrs[i])
+		}
+		attrs[i].SetKey(k)
+		attrs[i].SetValue(v)
+	}
+	return attrs, nil
+}
+
+func getRangeSlice(cmd *cobra.Command) ([]objectSDK.Range, error) {
+	v, _ := cmd.Flags().GetStringSlice(rangeFlagName)
+	if len(v) == 0 {
+		return []objectSDK.Range{}, nil
+	}
+	rs := make([]objectSDK.Range, len(v))
+	for i := range v {
+		before, after, found := strings.Cut(v[i], rangeSep)
+		if !found {
+			return nil, fmt.Errorf("invalid range specifier: %s", v[i])
+		}
+
+		offset, err := strconv.ParseUint(before, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("invalid '%s' range offset specifier: %w", v[i], err)
+		}
+		length, err := strconv.ParseUint(after, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("invalid '%s' range length specifier: %w", v[i], err)
+		}
+
+		rs[i].SetOffset(offset)
+		rs[i].SetLength(length)
+	}
+	return rs, nil
+}
+
+func patchPayloadPaths(cmd *cobra.Command) []string {
+	v, _ := cmd.Flags().GetStringSlice(payloadFlagName)
+	return v
+}

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

@@ -29,6 +29,7 @@ func init() {
 		objectRangeCmd,
 		objectLockCmd,
 		objectNodesCmd,
+		objectPatchCmd,
 	}
 
 	Cmd.AddCommand(objectChildCommands...)
@@ -39,6 +40,7 @@ func init() {
 	}
 
 	initObjectPutCmd()
+	initObjectPatchCmd()
 	initObjectDeleteCmd()
 	initObjectGetCmd()
 	initObjectSearchCmd()

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

@@ -306,6 +306,8 @@ func finalizeSession(cmd *cobra.Command, dst SessionPrm, tok *session.Object, ke
 	case *internal.PutObjectPrm:
 		common.PrintVerbose(cmd, "Binding session to object PUT...")
 		tok.ForVerb(session.VerbObjectPut)
+	case *internal.PatchObjectPrm:
+		tok.ForVerb(session.VerbObjectPatch)
 	case *internal.DeleteObjectPrm:
 		common.PrintVerbose(cmd, "Binding session to object DELETE...")
 		tok.ForVerb(session.VerbObjectDelete)
@@ -372,7 +374,7 @@ func collectObjectRelatives(cmd *cobra.Command, cli *client.Client, cnr cid.ID,
 		common.PrintVerbose(cmd, "Split information received - object is virtual.")
 		splitInfo := errSplit.SplitInfo()
 
-		if members, ok := tryGetSplitMembersByLinkingObject(cmd, splitInfo, prmHead, cnr, true); ok {
+		if members, ok := tryGetSplitMembersByLinkingObject(cmd, splitInfo, prmHead, cnr); ok {
 			return members
 		}
 
@@ -388,7 +390,7 @@ func collectObjectRelatives(cmd *cobra.Command, cli *client.Client, cnr cid.ID,
 	return nil
 }
 
-func tryGetSplitMembersByLinkingObject(cmd *cobra.Command, splitInfo *objectSDK.SplitInfo, prmHead internal.HeadObjectPrm, cnr cid.ID, withLinking bool) ([]oid.ID, bool) {
+func tryGetSplitMembersByLinkingObject(cmd *cobra.Command, splitInfo *objectSDK.SplitInfo, prmHead internal.HeadObjectPrm, cnr cid.ID) ([]oid.ID, bool) {
 	// collect split chain by the descending ease of operations (ease is evaluated heuristically).
 	// If any approach fails, we don't try the next since we assume that it will fail too.
 
@@ -409,10 +411,7 @@ func tryGetSplitMembersByLinkingObject(cmd *cobra.Command, splitInfo *objectSDK.
 
 			common.PrintVerbose(cmd, "Received split members from the linking object: %v", children)
 
-			if withLinking {
-				return append(children, idLinking), true
-			}
-			return children, true
+			return append(children, idLinking), true
 		}
 
 		// linking object is not required for

cmd/frostfs-cli/modules/tree/add.go

@@ -47,9 +47,10 @@ func add(cmd *cobra.Command, _ []string) {
 	meta, err := parseMeta(cmd)
 	commonCmd.ExitOnErr(cmd, "meta data parsing: %w", err)
 
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)
@@ -77,13 +78,13 @@ func add(cmd *cobra.Command, _ []string) {
 	cmd.Println("Node ID: ", resp.GetBody().GetNodeId())
 }
 
-func parseMeta(cmd *cobra.Command) ([]*tree.KeyValue, error) {
+func parseMeta(cmd *cobra.Command) ([]tree.KeyValue, error) {
 	raws, _ := cmd.Flags().GetStringSlice(metaFlagKey)
 	if len(raws) == 0 {
 		return nil, nil
 	}
 
-	pairs := make([]*tree.KeyValue, 0, len(raws))
+	pairs := make([]tree.KeyValue, 0, len(raws))
 	for i := range raws {
 		k, v, found := strings.Cut(raws[i], "=")
 		if !found {
@@ -94,7 +95,7 @@ func parseMeta(cmd *cobra.Command) ([]*tree.KeyValue, error) {
 		pair.Key = k
 		pair.Value = []byte(v)
 
-		pairs = append(pairs, &pair)
+		pairs = append(pairs, pair)
 	}
 
 	return pairs, nil

cmd/frostfs-cli/modules/tree/add_by_path.go

@@ -50,9 +50,10 @@ func addByPath(cmd *cobra.Command, _ []string) {
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
 	tid, _ := cmd.Flags().GetString(treeIDFlagKey)
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)

cmd/frostfs-cli/modules/tree/client.go

@@ -3,13 +3,14 @@ package tree
 import (
 	"context"
 	"strings"
-	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/tree"
 	metrics "git.frostfs.info/TrueCloudLab/frostfs-observability/metrics/grpc"
 	tracing "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/grpc"
+	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
@@ -17,7 +18,7 @@ import (
 
 // _client returns grpc Tree service client. Should be removed
 // after making Tree API public.
-func _client(ctx context.Context) (tree.TreeServiceClient, error) {
+func _client() (tree.TreeServiceClient, error) {
 	var netAddr network.Address
 	err := netAddr.FromString(viper.GetString(commonflags.RPC))
 	if err != nil {
@@ -25,7 +26,6 @@ func _client(ctx context.Context) (tree.TreeServiceClient, error) {
 	}
 
 	opts := []grpc.DialOption{
-		grpc.WithBlock(),
 		grpc.WithChainUnaryInterceptor(
 			metrics.NewUnaryClientInterceptor(),
 			tracing.NewUnaryClientInteceptor(),
@@ -40,12 +40,14 @@ func _client(ctx context.Context) (tree.TreeServiceClient, error) {
 		opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	}
 
-	// a default connection establishing timeout
-	const defaultClientConnectTimeout = time.Second * 2
-
-	ctx, cancel := context.WithTimeout(ctx, defaultClientConnectTimeout)
-	cc, err := grpc.DialContext(ctx, netAddr.URIAddr(), opts...)
-	cancel()
-
+	cc, err := grpc.NewClient(netAddr.URIAddr(), opts...)
 	return tree.NewTreeServiceClient(cc), err
 }
+
+func contextWithTimeout(cmd *cobra.Command) (context.Context, context.CancelFunc) {
+	if timeout := viper.GetDuration(commonflags.Timeout); timeout > 0 {
+		common.PrintVerbose(cmd, "Set request timeout to %s.", timeout)
+		return context.WithTimeout(cmd.Context(), timeout)
+	}
+	return context.WithTimeout(cmd.Context(), commonflags.TimeoutDefault)
+}

cmd/frostfs-cli/modules/tree/get_by_path.go

@@ -50,9 +50,10 @@ func getByPath(cmd *cobra.Command, _ []string) {
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
 	tid, _ := cmd.Flags().GetString(treeIDFlagKey)
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)

cmd/frostfs-cli/modules/tree/get_op_log.go

@@ -44,9 +44,10 @@ func getOpLog(cmd *cobra.Command, _ []string) {
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
 	tid, _ := cmd.Flags().GetString(treeIDFlagKey)
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)

cmd/frostfs-cli/modules/tree/healthcheck.go

@@ -26,9 +26,10 @@ func initHealthcheckCmd() {
 
 func healthcheck(cmd *cobra.Command, _ []string) {
 	pk := key.GetOrGenerate(cmd)
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	req := &tree.HealthcheckRequest{

cmd/frostfs-cli/modules/tree/list.go

@@ -38,9 +38,10 @@ func list(cmd *cobra.Command, _ []string) {
 	err := cnr.DecodeString(cidString)
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)

cmd/frostfs-cli/modules/tree/move.go

@@ -45,9 +45,10 @@ func move(cmd *cobra.Command, _ []string) {
 	err := cnr.DecodeString(cidString)
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)
@@ -75,7 +76,7 @@ func move(cmd *cobra.Command, _ []string) {
 	resp, err := cli.GetSubTree(ctx, subTreeReq)
 	commonCmd.ExitOnErr(cmd, "rpc call: %w", err)
 
-	var meta []*tree.KeyValue
+	var meta []tree.KeyValue
 	subtreeResp, err := resp.Recv()
 	for ; err == nil; subtreeResp, err = resp.Recv() {
 		meta = subtreeResp.GetBody().GetMeta()

cmd/frostfs-cli/modules/tree/remove.go

@@ -41,9 +41,10 @@ func remove(cmd *cobra.Command, _ []string) {
 	err := cnr.DecodeString(cidString)
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)

cmd/frostfs-cli/modules/tree/root.go

@@ -49,6 +49,7 @@ const (
 	heightFlagKey = "height"
 	countFlagKey  = "count"
 	depthFlagKey  = "depth"
+	orderFlagKey  = "ordered"
 )
 
 func initCTID(cmd *cobra.Command) {

cmd/frostfs-cli/modules/tree/subtree.go

@@ -30,6 +30,7 @@ func initGetSubtreeCmd() {
 	ff := getSubtreeCmd.Flags()
 	ff.Uint64(rootIDFlagKey, 0, "Root ID to traverse from.")
 	ff.Uint32(depthFlagKey, 10, "Traversal depth.")
+	ff.Bool(orderFlagKey, false, "Sort output by ascending FileName.")
 
 	_ = getSubtreeCmd.MarkFlagRequired(commonflags.CIDFlag)
 	_ = getSubtreeCmd.MarkFlagRequired(treeIDFlagKey)
@@ -45,9 +46,10 @@ func getSubTree(cmd *cobra.Command, _ []string) {
 	err := cnr.DecodeString(cidString)
 	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)
 
-	ctx := cmd.Context()
+	ctx, cancel := contextWithTimeout(cmd)
+	defer cancel()
 
-	cli, err := _client(ctx)
+	cli, err := _client()
 	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)
 
 	rawCID := make([]byte, sha256.Size)
@@ -59,6 +61,13 @@ func getSubTree(cmd *cobra.Command, _ []string) {
 
 	depth, _ := cmd.Flags().GetUint32(depthFlagKey)
 
+	order, _ := cmd.Flags().GetBool(orderFlagKey)
+
+	bodyOrder := tree.GetSubTreeRequest_Body_Order_None
+	if order {
+		bodyOrder = tree.GetSubTreeRequest_Body_Order_Asc
+	}
+
 	var bt []byte
 	if t := common.ReadBearerToken(cmd, bearerFlagKey); t != nil {
 		bt = t.Marshal()
@@ -71,6 +80,9 @@ func getSubTree(cmd *cobra.Command, _ []string) {
 			RootId:      []uint64{rid},
 			Depth:       depth,
 			BearerToken: bt,
+			OrderBy: &tree.GetSubTreeRequest_Body_Order{
+				Direction: bodyOrder,
+			},
 		},
 	}
 

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

@@ -33,7 +33,7 @@ func PrettyPrintTableBACL(cmd *cobra.Command, bacl *acl.Basic) {
 	fmt.Fprintln(w, strings.Join(bits, "\t"))
 	// Footer
 	footer := []string{"X F"}
-	for i := 0; i < 7; i++ {
+	for range 7 {
 		footer = append(footer, "U S O B")
 	}
 	fmt.Fprintln(w, strings.Join(footer, "\t"))

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

@@ -239,6 +239,8 @@ func parseAction(lexeme string) ([]string, bool, error) {
 		return []string{nativeschema.MethodRangeObject}, true, nil
 	case "object.hash":
 		return []string{nativeschema.MethodHashObject}, true, nil
+	case "object.patch":
+		return []string{nativeschema.MethodPatchObject}, true, nil
 	case "object.*":
 		return []string{
 			nativeschema.MethodPutObject,
@@ -248,6 +250,7 @@ func parseAction(lexeme string) ([]string, bool, error) {
 			nativeschema.MethodSearchObject,
 			nativeschema.MethodRangeObject,
 			nativeschema.MethodHashObject,
+			nativeschema.MethodPatchObject,
 		}, true, nil
 	case "container.put":
 		return []string{nativeschema.MethodPutContainer}, false, nil
@@ -255,10 +258,6 @@ func parseAction(lexeme string) ([]string, bool, error) {
 		return []string{nativeschema.MethodDeleteContainer}, false, nil
 	case "container.get":
 		return []string{nativeschema.MethodGetContainer}, false, nil
-	case "container.setcontainereacl":
-		return []string{nativeschema.MethodSetContainerEACL}, false, nil
-	case "container.getcontainereacl":
-		return []string{nativeschema.MethodGetContainerEACL}, false, nil
 	case "container.list":
 		return []string{nativeschema.MethodListContainers}, false, nil
 	case "container.*":
@@ -266,8 +265,6 @@ func parseAction(lexeme string) ([]string, bool, error) {
 			nativeschema.MethodPutContainer,
 			nativeschema.MethodDeleteContainer,
 			nativeschema.MethodGetContainer,
-			nativeschema.MethodSetContainerEACL,
-			nativeschema.MethodGetContainerEACL,
 			nativeschema.MethodListContainers,
 		}, false, nil
 	default:

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

@@ -1,18 +0,0 @@
-package util
-
-import (
-	"github.com/spf13/cobra"
-)
-
-// locode section.
-var locodeCmd = &cobra.Command{
-	Use:   "locode",
-	Short: "Working with FrostFS UN/LOCODE database",
-}
-
-func initLocodeCmd() {
-	locodeCmd.AddCommand(locodeGenerateCmd, locodeInfoCmd)
-
-	initUtilLocodeInfoCmd()
-	initUtilLocodeGenerateCmd()
-}

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

@@ -1,96 +0,0 @@
-package util
-
-import (
-	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
-	locodedb "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db"
-	airportsdb "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db/airports"
-	locodebolt "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db/boltdb"
-	continentsdb "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db/continents/geojson"
-	csvlocode "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/table/csv"
-	"github.com/spf13/cobra"
-)
-
-type namesDB struct {
-	*airportsdb.DB
-	*csvlocode.Table
-}
-
-const (
-	locodeGenerateInputFlag      = "in"
-	locodeGenerateSubDivFlag     = "subdiv"
-	locodeGenerateAirportsFlag   = "airports"
-	locodeGenerateCountriesFlag  = "countries"
-	locodeGenerateContinentsFlag = "continents"
-	locodeGenerateOutputFlag     = "out"
-)
-
-var (
-	locodeGenerateInPaths        []string
-	locodeGenerateSubDivPath     string
-	locodeGenerateAirportsPath   string
-	locodeGenerateCountriesPath  string
-	locodeGenerateContinentsPath string
-	locodeGenerateOutPath        string
-
-	locodeGenerateCmd = &cobra.Command{
-		Use:   "generate",
-		Short: "Generate UN/LOCODE database for FrostFS",
-		Run: func(cmd *cobra.Command, _ []string) {
-			locodeDB := csvlocode.New(
-				csvlocode.Prm{
-					Path:       locodeGenerateInPaths[0],
-					SubDivPath: locodeGenerateSubDivPath,
-				},
-				csvlocode.WithExtraPaths(locodeGenerateInPaths[1:]...),
-			)
-
-			airportDB := airportsdb.New(airportsdb.Prm{
-				AirportsPath:  locodeGenerateAirportsPath,
-				CountriesPath: locodeGenerateCountriesPath,
-			})
-
-			continentsDB := continentsdb.New(continentsdb.Prm{
-				Path: locodeGenerateContinentsPath,
-			})
-
-			targetDB := locodebolt.New(locodebolt.Prm{
-				Path: locodeGenerateOutPath,
-			})
-
-			err := targetDB.Open()
-			commonCmd.ExitOnErr(cmd, "", err)
-
-			defer targetDB.Close()
-
-			names := &namesDB{
-				DB:    airportDB,
-				Table: locodeDB,
-			}
-
-			err = locodedb.FillDatabase(locodeDB, airportDB, continentsDB, names, targetDB)
-			commonCmd.ExitOnErr(cmd, "", err)
-		},
-	}
-)
-
-func initUtilLocodeGenerateCmd() {
-	flags := locodeGenerateCmd.Flags()
-
-	flags.StringSliceVar(&locodeGenerateInPaths, locodeGenerateInputFlag, nil, "List of paths to UN/LOCODE tables (csv)")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateInputFlag)
-
-	flags.StringVar(&locodeGenerateSubDivPath, locodeGenerateSubDivFlag, "", "Path to UN/LOCODE subdivision database (csv)")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateSubDivFlag)
-
-	flags.StringVar(&locodeGenerateAirportsPath, locodeGenerateAirportsFlag, "", "Path to OpenFlights airport database (csv)")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateAirportsFlag)
-
-	flags.StringVar(&locodeGenerateCountriesPath, locodeGenerateCountriesFlag, "", "Path to OpenFlights country database (csv)")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateCountriesFlag)
-
-	flags.StringVar(&locodeGenerateContinentsPath, locodeGenerateContinentsFlag, "", "Path to continent polygons (GeoJSON)")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateContinentsFlag)
-
-	flags.StringVar(&locodeGenerateOutPath, locodeGenerateOutputFlag, "", "Target path for generated database")
-	_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateOutputFlag)
-}

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

@@ -1,56 +0,0 @@
-package util
-
-import (
-	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
-	locodedb "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db"
-	locodebolt "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/locode/db/boltdb"
-	"github.com/spf13/cobra"
-)
-
-const (
-	locodeInfoDBFlag   = "db"
-	locodeInfoCodeFlag = "locode"
-)
-
-var (
-	locodeInfoDBPath string
-	locodeInfoCode   string
-
-	locodeInfoCmd = &cobra.Command{
-		Use:   "info",
-		Short: "Print information about UN/LOCODE from FrostFS database",
-		Run: func(cmd *cobra.Command, _ []string) {
-			targetDB := locodebolt.New(locodebolt.Prm{
-				Path: locodeInfoDBPath,
-			}, locodebolt.ReadOnly())
-
-			err := targetDB.Open()
-			commonCmd.ExitOnErr(cmd, "", err)
-
-			defer targetDB.Close()
-
-			record, err := locodedb.LocodeRecord(targetDB, locodeInfoCode)
-			commonCmd.ExitOnErr(cmd, "", err)
-
-			cmd.Printf("Country: %s\n", record.CountryName())
-			cmd.Printf("Location: %s\n", record.LocationName())
-			cmd.Printf("Continent: %s\n", record.Continent())
-			if subDivCode := record.SubDivCode(); subDivCode != "" {
-				cmd.Printf("Subdivision: [%s] %s\n", subDivCode, record.SubDivName())
-			}
-
-			geoPoint := record.GeoPoint()
-			cmd.Printf("Coordinates: %0.2f, %0.2f\n", geoPoint.Latitude(), geoPoint.Longitude())
-		},
-	}
-)
-
-func initUtilLocodeInfoCmd() {
-	flags := locodeInfoCmd.Flags()
-
-	flags.StringVar(&locodeInfoDBPath, locodeInfoDBFlag, "", "Path to FrostFS UN/LOCODE database")
-	_ = locodeInfoCmd.MarkFlagRequired(locodeInfoDBFlag)
-
-	flags.StringVar(&locodeInfoCode, locodeInfoCodeFlag, "", "UN/LOCODE")
-	_ = locodeInfoCmd.MarkFlagRequired(locodeInfoCodeFlag)
-}

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

@@ -23,11 +23,9 @@ func init() {
 		signCmd,
 		convertCmd,
 		keyerCmd,
-		locodeCmd,
 	)
 
 	initSignCmd()
 	initConvertCmd()
 	initKeyerCmd()
-	initLocodeCmd()
 }

cmd/frostfs-ir/config.go

@@ -7,6 +7,7 @@ import (
 
 	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"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 )
@@ -40,6 +41,8 @@ func reloadConfig() error {
 	if err != nil {
 		return err
 	}
+	logPrm.PrependTimestamp = cfg.GetBool("logger.timestamp")
+
 	return logPrm.Reload()
 }
 
@@ -81,6 +84,10 @@ func watchForSignal(cancel func()) {
 				return
 			case <-sighupCh:
 				log.Info(logs.FrostFSNodeSIGHUPHasBeenReceivedRereadingConfiguration)
+				if !innerRing.CompareAndSwapHealthStatus(control.HealthStatus_READY, control.HealthStatus_RECONFIGURING) {
+					log.Info(logs.FrostFSNodeSIGHUPSkip)
+					break
+				}
 				err := reloadConfig()
 				if err != nil {
 					log.Error(logs.FrostFSNodeConfigurationReading, zap.Error(err))
@@ -92,6 +99,7 @@ func watchForSignal(cancel func()) {
 				if err != nil {
 					log.Error(logs.FrostFSNodeConfigurationReading, zap.Error(err))
 				}
+				innerRing.CompareAndSwapHealthStatus(control.HealthStatus_RECONFIGURING, control.HealthStatus_READY)
 				log.Info(logs.FrostFSNodeConfigurationHasBeenReloadedSuccessfully)
 			}
 		}

cmd/frostfs-ir/defaults.go

@@ -9,6 +9,7 @@ import (
 func defaultConfiguration(cfg *viper.Viper) {
 	cfg.SetDefault("logger.level", "info")
 	cfg.SetDefault("logger.destination", "stdout")
+	cfg.SetDefault("logger.timestamp", false)
 
 	setPprofDefaults(cfg)
 

cmd/frostfs-ir/main.go

@@ -13,6 +13,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/misc"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/innerring"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/sdnotify"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 )
@@ -78,6 +79,8 @@ func main() {
 	)
 	exitErr(err)
 	logPrm.SamplingHook = metrics.LogMetrics().GetSamplingHook()
+	logPrm.PrependTimestamp = cfg.GetBool("logger.timestamp")
+
 	log, err = logger.NewLogger(logPrm)
 	exitErr(err)
 
@@ -124,4 +127,8 @@ func shutdown() {
 			zap.String("error", err.Error()),
 		)
 	}
+
+	if err := sdnotify.ClearStatus(); err != nil {
+		log.Error(logs.FailedToReportStatusToSystemd, zap.Error(err))
+	}
 }

cmd/frostfs-lens/internal/blobovnicza/root.go

@@ -19,7 +19,7 @@ var Root = &cobra.Command{
 }
 
 func init() {
-	Root.AddCommand(listCMD, inspectCMD)
+	Root.AddCommand(listCMD, inspectCMD, tuiCMD)
 }
 
 func openBlobovnicza(cmd *cobra.Command) *blobovnicza.Blobovnicza {

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

@@ -0,0 +1,79 @@
+package blobovnicza
+
+import (
+	"context"
+	"fmt"
+
+	common "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal"
+	schema "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/blobovnicza"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/tui"
+	"github.com/rivo/tview"
+	"github.com/spf13/cobra"
+	"go.etcd.io/bbolt"
+)
+
+var tuiCMD = &cobra.Command{
+	Use:   "explore",
+	Short: "Blobovnicza exploration with a terminal UI",
+	Long: `Launch a terminal UI to explore blobovnicza and search for data.
+
+Available search filters:
+- cid  CID
+- oid  OID
+- addr CID/OID
+`,
+	Run: tuiFunc,
+}
+
+var initialPrompt string
+
+func init() {
+	common.AddComponentPathFlag(tuiCMD, &vPath)
+
+	tuiCMD.Flags().StringVar(
+		&initialPrompt,
+		"filter",
+		"",
+		"Filter prompt to start with, format 'tag:value [+ tag:value]...'",
+	)
+}
+
+func tuiFunc(cmd *cobra.Command, _ []string) {
+	common.ExitOnErr(cmd, runTUI(cmd))
+}
+
+func runTUI(cmd *cobra.Command) error {
+	db, err := openDB(false)
+	if err != nil {
+		return fmt.Errorf("couldn't open database: %w", err)
+	}
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(cmd.Context())
+	defer cancel()
+
+	app := tview.NewApplication()
+	ui := tui.NewUI(ctx, app, db, schema.BlobovniczaParser, nil)
+
+	_ = ui.AddFilter("cid", tui.CIDParser, "CID")
+	_ = ui.AddFilter("oid", tui.OIDParser, "OID")
+	_ = ui.AddCompositeFilter("addr", tui.AddressParser, "CID/OID")
+
+	err = ui.WithPrompt(initialPrompt)
+	if err != nil {
+		return fmt.Errorf("invalid filter prompt: %w", err)
+	}
+
+	app.SetRoot(ui, true).SetFocus(ui)
+	return app.Run()
+}
+
+func openDB(writable bool) (*bbolt.DB, error) {
+	db, err := bbolt.Open(vPath, 0o600, &bbolt.Options{
+		ReadOnly: !writable,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return db, nil
+}

cmd/frostfs-lens/internal/meta/root.go

@@ -32,6 +32,7 @@ func init() {
 		inspectCMD,
 		listGraveyardCMD,
 		listGarbageCMD,
+		tuiCMD,
 	)
 }
 

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

@@ -0,0 +1,82 @@
+package meta
+
+import (
+	"context"
+	"fmt"
+
+	common "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal"
+	schema "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/metabase"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/tui"
+	"github.com/rivo/tview"
+	"github.com/spf13/cobra"
+	"go.etcd.io/bbolt"
+)
+
+var tuiCMD = &cobra.Command{
+	Use:   "explore",
+	Short: "Metabase exploration with a terminal UI",
+	Long: `Launch a terminal UI to explore metabase and search for data.
+
+Available search filters:
+- cid  CID
+- oid  OID
+- addr CID/OID
+- attr key[/value]
+`,
+	Run: tuiFunc,
+}
+
+var initialPrompt string
+
+func init() {
+	common.AddComponentPathFlag(tuiCMD, &vPath)
+
+	tuiCMD.Flags().StringVar(
+		&initialPrompt,
+		"filter",
+		"",
+		"Filter prompt to start with, format 'tag:value [+ tag:value]...'",
+	)
+}
+
+func tuiFunc(cmd *cobra.Command, _ []string) {
+	common.ExitOnErr(cmd, runTUI(cmd))
+}
+
+func runTUI(cmd *cobra.Command) error {
+	db, err := openDB(false)
+	if err != nil {
+		return fmt.Errorf("couldn't open database: %w", err)
+	}
+	defer db.Close()
+
+	// Need if app was stopped with Ctrl-C.
+	ctx, cancel := context.WithCancel(cmd.Context())
+	defer cancel()
+
+	app := tview.NewApplication()
+	ui := tui.NewUI(ctx, app, db, schema.MetabaseParser, nil)
+
+	_ = ui.AddFilter("cid", tui.CIDParser, "CID")
+	_ = ui.AddFilter("oid", tui.OIDParser, "OID")
+	_ = ui.AddCompositeFilter("addr", tui.AddressParser, "CID/OID")
+	_ = ui.AddCompositeFilter("attr", tui.AttributeParser, "key[/value]")
+
+	err = ui.WithPrompt(initialPrompt)
+	if err != nil {
+		return fmt.Errorf("invalid filter prompt: %w", err)
+	}
+
+	app.SetRoot(ui, true).SetFocus(ui)
+	return app.Run()
+}
+
+func openDB(writable bool) (*bbolt.DB, error) {
+	db, err := bbolt.Open(vPath, 0o600, &bbolt.Options{
+		ReadOnly: !writable,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return db, nil
+}

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

@@ -0,0 +1,96 @@
+package blobovnicza
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/mr-tron/base58"
+)
+
+var BlobovniczaParser = common.WithFallback(
+	common.Any(
+		MetaBucketParser,
+		BucketParser,
+	),
+	common.RawParser.ToFallbackParser(),
+)
+
+func MetaBucketParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if value != nil {
+		return nil, nil, errors.New("not a bucket")
+	}
+
+	if string(key) != "META" {
+		return nil, nil, errors.New("invalid bucket name")
+	}
+
+	return &MetaBucket{}, MetaRecordParser, nil
+}
+
+func MetaRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var r MetaRecord
+
+	if len(key) == 0 {
+		return nil, nil, errors.New("invalid key")
+	}
+
+	r.label = string(key)
+	r.count = binary.LittleEndian.Uint64(value)
+
+	return &r, nil, nil
+}
+
+func BucketParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if value != nil {
+		return nil, nil, errors.New("not a bucket")
+	}
+
+	size, n := binary.Varint(key)
+	if n <= 0 {
+		return nil, nil, errors.New("invalid size")
+	}
+
+	return &Bucket{size: size}, RecordParser, nil
+}
+
+func RecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	parts := strings.Split(string(key), "/")
+
+	if len(parts) != 2 {
+		return nil, nil, errors.New("invalid key, expected address string <CID>/<OID>")
+	}
+
+	cnrRaw, err := base58.Decode(parts[0])
+	if err != nil {
+		return nil, nil, errors.New("can't decode CID string")
+	}
+	objRaw, err := base58.Decode(parts[1])
+	if err != nil {
+		return nil, nil, errors.New("can't decode OID string")
+	}
+
+	cnr := cid.ID{}
+	if err := cnr.Decode(cnrRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode CID: %w", err)
+	}
+	obj := oid.ID{}
+	if err := obj.Decode(objRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode OID: %w", err)
+	}
+
+	var r Record
+
+	r.addr.SetContainer(cnr)
+	r.addr.SetObject(obj)
+
+	if err := r.object.Unmarshal(value); err != nil {
+		return nil, nil, errors.New("can't unmarshal object")
+	}
+
+	return &r, nil, nil
+}

cmd/frostfs-lens/internal/schema/blobovnicza/types.go

@@ -0,0 +1,101 @@
+package blobovnicza
+
+import (
+	"fmt"
+	"strconv"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	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"
+	"github.com/davecgh/go-spew/spew"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type (
+	MetaBucket struct{}
+
+	MetaRecord struct {
+		label string
+		count uint64
+	}
+
+	Bucket struct {
+		size int64
+	}
+
+	Record struct {
+		addr   oid.Address
+		object objectSDK.Object
+	}
+)
+
+func (b *MetaBucket) String() string {
+	return common.FormatSimple("META", tcell.ColorLime)
+}
+
+func (b *MetaBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *MetaBucket) Filter(string, any) common.FilterResult {
+	return common.No
+}
+
+func (r *MetaRecord) String() string {
+	return fmt.Sprintf("%-11s %c %d", r.label, tview.Borders.Vertical, r.count)
+}
+
+func (r *MetaRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *MetaRecord) Filter(string, any) common.FilterResult {
+	return common.No
+}
+
+func (b *Bucket) String() string {
+	return common.FormatSimple(strconv.FormatInt(b.size, 10), tcell.ColorLime)
+}
+
+func (b *Bucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *Bucket) Filter(typ string, _ any) common.FilterResult {
+	switch typ {
+	case "cid":
+		return common.Maybe
+	case "oid":
+		return common.Maybe
+	default:
+		return common.No
+	}
+}
+
+func (r *Record) String() string {
+	return fmt.Sprintf(
+		"CID %s OID %s %c Object {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Object()), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+}
+
+func (r *Record) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *Record) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.addr.Container().Equals(id), common.Yes, common.No)
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.addr.Object().Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}

cmd/frostfs-lens/internal/schema/common/format.go

@@ -0,0 +1,43 @@
+package common
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/gdamore/tcell/v2"
+)
+
+type FormatOptions struct {
+	Color tcell.Color
+
+	Bold,
+	Italic,
+	Underline,
+	StrikeThrough bool
+}
+
+func Format(s string, opts FormatOptions) string {
+	var boldTag, italicTag, underlineTag, strikeThroughTag string
+
+	switch {
+	case opts.Bold:
+		boldTag = "b"
+	case opts.Italic:
+		italicTag = "i"
+	case opts.Underline:
+		underlineTag = "u"
+	case opts.StrikeThrough:
+		strikeThroughTag = "s"
+	}
+
+	attrs := fmt.Sprintf(
+		"%s%s%s%s", boldTag, italicTag, underlineTag, strikeThroughTag,
+	)
+	color := strconv.FormatInt(int64(opts.Color.Hex()), 16)
+
+	return fmt.Sprintf("[#%06s::%s]%s[-::-]", color, attrs, s)
+}
+
+func FormatSimple(s string, c tcell.Color) string {
+	return Format(s, FormatOptions{Color: c})
+}

cmd/frostfs-lens/internal/schema/common/raw.go

@@ -0,0 +1,29 @@
+package common
+
+import (
+	"github.com/davecgh/go-spew/spew"
+	"github.com/gdamore/tcell/v2"
+	"github.com/mr-tron/base58"
+)
+
+type RawEntry struct {
+	key, value []byte
+}
+
+var RawParser Parser = rawParser
+
+func rawParser(key, value []byte) (SchemaEntry, Parser, error) {
+	return &RawEntry{key: key, value: value}, rawParser, nil
+}
+
+func (r *RawEntry) String() string {
+	return FormatSimple(base58.Encode(r.key), tcell.ColorRed)
+}
+
+func (r *RawEntry) DetailedString() string {
+	return spew.Sdump(r)
+}
+
+func (r *RawEntry) Filter(string, any) FilterResult {
+	return No
+}

cmd/frostfs-lens/internal/schema/common/schema.go

@@ -0,0 +1,81 @@
+package common
+
+import (
+	"errors"
+	"fmt"
+)
+
+type FilterResult byte
+
+const (
+	No FilterResult = iota
+	Maybe
+	Yes
+)
+
+func IfThenElse(condition bool, onSuccess, onFailure FilterResult) FilterResult {
+	var res FilterResult
+	if condition {
+		res = onSuccess
+	} else {
+		res = onFailure
+	}
+	return res
+}
+
+type SchemaEntry interface {
+	String() string
+	DetailedString() string
+	Filter(typ string, val any) FilterResult
+}
+
+type (
+	Parser         func(key, value []byte) (SchemaEntry, Parser, error)
+	FallbackParser func(key, value []byte) (SchemaEntry, Parser)
+)
+
+func Any(parsers ...Parser) Parser {
+	return func(key, value []byte) (SchemaEntry, Parser, error) {
+		var errs error
+		for _, parser := range parsers {
+			ret, next, err := parser(key, value)
+			if err == nil {
+				return ret, next, nil
+			}
+			errs = errors.Join(errs, err)
+		}
+		return nil, nil, fmt.Errorf("no parser succeeded: %w", errs)
+	}
+}
+
+func WithFallback(parser Parser, fallback FallbackParser) Parser {
+	if parser == nil {
+		return fallback.ToParser()
+	}
+	return func(key, value []byte) (SchemaEntry, Parser, error) {
+		entry, next, err := parser(key, value)
+		if err == nil {
+			return entry, WithFallback(next, fallback), nil
+		}
+		return fallback.ToParser()(key, value)
+	}
+}
+
+func (fp FallbackParser) ToParser() Parser {
+	return func(key, value []byte) (SchemaEntry, Parser, error) {
+		entry, next := fp(key, value)
+		return entry, next, nil
+	}
+}
+
+func (p Parser) ToFallbackParser() FallbackParser {
+	return func(key, value []byte) (SchemaEntry, Parser) {
+		entry, next, err := p(key, value)
+		if err != nil {
+			panic(fmt.Errorf(
+				"couldn't use that parser as a fallback parser, it returned an error: %w", err,
+			))
+		}
+		return entry, next
+	}
+}

cmd/frostfs-lens/internal/schema/metabase/buckets/detailed.go

@@ -0,0 +1,29 @@
+package buckets
+
+import (
+	"github.com/davecgh/go-spew/spew"
+)
+
+func (b *PrefixBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *PrefixContainerBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *UserBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *ContainerBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *UserAttributeKeyBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (b *UserAttributeValueBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}

cmd/frostfs-lens/internal/schema/metabase/buckets/filter.go

@@ -0,0 +1,81 @@
+package buckets
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+)
+
+func (b *PrefixBucket) Filter(typ string, _ any) common.FilterResult {
+	switch typ {
+	case "cid":
+		return b.resolvers.cidResolver(false)
+	case "oid":
+		return b.resolvers.oidResolver(false)
+	default:
+		return common.No
+	}
+}
+
+func (b *PrefixContainerBucket) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return b.resolvers.cidResolver(b.id.Equals(id))
+	case "oid":
+		return b.resolvers.oidResolver(false)
+	default:
+		return common.No
+	}
+}
+
+func (b *UserBucket) Filter(typ string, _ any) common.FilterResult {
+	switch typ {
+	case "cid":
+		return b.resolvers.cidResolver(false)
+	case "oid":
+		return b.resolvers.oidResolver(false)
+	default:
+		return common.No
+	}
+}
+
+func (b *ContainerBucket) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return b.resolvers.cidResolver(b.id.Equals(id))
+	case "oid":
+		return b.resolvers.oidResolver(false)
+	default:
+		return common.No
+	}
+}
+
+func (b *UserAttributeKeyBucket) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(b.id.Equals(id), common.Yes, common.No)
+	case "oid":
+		return common.Maybe
+	case "key":
+		key := val.(string)
+		return common.IfThenElse(b.key == key, common.Yes, common.No)
+	case "value":
+		return common.Maybe
+	default:
+		return common.No
+	}
+}
+
+func (b *UserAttributeValueBucket) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		return common.Maybe
+	case "value":
+		value := val.(string)
+		return common.IfThenElse(b.value == value, common.Yes, common.No)
+	default:
+		return common.No
+	}
+}

cmd/frostfs-lens/internal/schema/metabase/buckets/parsers.go

@@ -0,0 +1,111 @@
+package buckets
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/metabase/records"
+)
+
+var (
+	GraveyardParser = NewPrefixBucketParser(Graveyard, records.GraveyardRecordParser, Resolvers{
+		cidResolver: LenientResolver,
+		oidResolver: LenientResolver,
+	})
+
+	GarbageParser = NewPrefixBucketParser(Garbage, records.GarbageRecordParser, Resolvers{
+		cidResolver: LenientResolver,
+		oidResolver: LenientResolver,
+	})
+
+	ContainerVolumeParser = NewPrefixBucketParser(ContainerVolume, records.ContainerVolumeRecordParser, Resolvers{
+		cidResolver: LenientResolver,
+		oidResolver: StrictResolver,
+	})
+
+	LockedParser = NewPrefixBucketParser(
+		Locked,
+		NewContainerBucketParser(
+			records.LockedRecordParser,
+			Resolvers{
+				cidResolver: StrictResolver,
+				oidResolver: LenientResolver,
+			},
+		),
+		Resolvers{
+			cidResolver: LenientResolver,
+			oidResolver: LenientResolver,
+		},
+	)
+
+	ShardInfoParser = NewPrefixBucketParser(ShardInfo, records.ShardInfoRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: StrictResolver,
+	})
+
+	PrimaryParser = NewPrefixContainerBucketParser(Primary, records.ObjectRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	LockersParser = NewPrefixContainerBucketParser(Lockers, records.ObjectRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	TombstoneParser = NewPrefixContainerBucketParser(Tombstone, records.ObjectRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	SmallParser = NewPrefixContainerBucketParser(Small, records.SmallRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	RootParser = NewPrefixContainerBucketParser(Root, records.RootRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	OwnerParser = NewPrefixContainerBucketParser(
+		Owner,
+		NewUserBucketParser(
+			records.OwnerRecordParser,
+			Resolvers{
+				cidResolver: StrictResolver,
+				oidResolver: LenientResolver,
+			},
+		),
+		Resolvers{
+			cidResolver: StrictResolver,
+			oidResolver: LenientResolver,
+		},
+	)
+
+	UserAttributeParser = NewUserAttributeKeyBucketParser(
+		NewUserAttributeValueBucketParser(records.UserAttributeRecordParser),
+	)
+
+	PayloadHashParser = NewPrefixContainerBucketParser(PayloadHash, records.PayloadHashRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: StrictResolver,
+	})
+
+	ParentParser = NewPrefixContainerBucketParser(Parent, records.ParentRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+
+	SplitParser = NewPrefixContainerBucketParser(Split, records.SplitRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: StrictResolver,
+	})
+
+	ContainerCountersParser = NewPrefixBucketParser(ContainerCounters, records.ContainerCountersRecordParser, Resolvers{
+		cidResolver: LenientResolver,
+		oidResolver: StrictResolver,
+	})
+
+	ECInfoParser = NewPrefixContainerBucketParser(ECInfo, records.ECInfoRecordParser, Resolvers{
+		cidResolver: StrictResolver,
+		oidResolver: LenientResolver,
+	})
+)

cmd/frostfs-lens/internal/schema/metabase/buckets/prefix.go

@@ -0,0 +1,53 @@
+package buckets
+
+type Prefix byte
+
+const (
+	Graveyard Prefix = iota
+	Garbage
+	ToMoveIt
+	ContainerVolume
+	Locked
+	ShardInfo
+	Primary
+	Lockers
+	_
+	Tombstone
+	Small
+	Root
+	Owner
+	UserAttribute
+	PayloadHash
+	Parent
+	Split
+	ContainerCounters
+	ECInfo
+)
+
+var x = map[Prefix]string{
+	Graveyard:         "Graveyard",
+	Garbage:           "Garbage",
+	ToMoveIt:          "To Move It",
+	ContainerVolume:   "Container Volume",
+	Locked:            "Locked",
+	ShardInfo:         "Shard Info",
+	Primary:           "Primary",
+	Lockers:           "Lockers",
+	Tombstone:         "Tombstone",
+	Small:             "Small",
+	Root:              "Root",
+	Owner:             "Owner",
+	UserAttribute:     "User Attribute",
+	PayloadHash:       "Payload Hash",
+	Parent:            "Parent",
+	Split:             "Split",
+	ContainerCounters: "Container Counters",
+	ECInfo:            "EC Info",
+}
+
+func (p Prefix) String() string {
+	if s, ok := x[p]; ok {
+		return s
+	}
+	return "Unknown Prefix"
+}

cmd/frostfs-lens/internal/schema/metabase/buckets/string.go

@@ -0,0 +1,48 @@
+package buckets
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"github.com/gdamore/tcell/v2"
+)
+
+func (b *PrefixBucket) String() string {
+	return common.FormatSimple(
+		fmt.Sprintf("(%2d %-18s)", b.prefix, b.prefix), tcell.ColorLime,
+	)
+}
+
+func (b *PrefixContainerBucket) String() string {
+	return fmt.Sprintf(
+		"%s CID %s",
+		common.FormatSimple(
+			fmt.Sprintf("(%2d %-18s)", b.prefix, b.prefix), tcell.ColorLime,
+		),
+		common.FormatSimple(b.id.String(), tcell.ColorAqua),
+	)
+}
+
+func (b *UserBucket) String() string {
+	return "UID " + common.FormatSimple(b.id.String(), tcell.ColorAqua)
+}
+
+func (b *ContainerBucket) String() string {
+	return "CID " + common.FormatSimple(b.id.String(), tcell.ColorAqua)
+}
+
+func (b *UserAttributeKeyBucket) String() string {
+	return fmt.Sprintf("%s CID %s ATTR-KEY %s",
+		common.FormatSimple(
+			fmt.Sprintf("(%2d %-18s)", b.prefix, b.prefix), tcell.ColorLime,
+		),
+		common.FormatSimple(
+			fmt.Sprintf("%-44s", b.id), tcell.ColorAqua,
+		),
+		common.FormatSimple(b.key, tcell.ColorAqua),
+	)
+}
+
+func (b *UserAttributeValueBucket) String() string {
+	return "ATTR-VALUE " + common.FormatSimple(b.value, tcell.ColorAqua)
+}

cmd/frostfs-lens/internal/schema/metabase/buckets/types.go

@@ -0,0 +1,166 @@
+package buckets
+
+import (
+	"errors"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+	"github.com/mr-tron/base58"
+)
+
+type (
+	PrefixBucket struct {
+		prefix    Prefix
+		resolvers Resolvers
+	}
+
+	PrefixContainerBucket struct {
+		prefix    Prefix
+		id        cid.ID
+		resolvers Resolvers
+	}
+
+	ContainerBucket struct {
+		id        cid.ID
+		resolvers Resolvers
+	}
+
+	UserBucket struct {
+		id        user.ID
+		resolvers Resolvers
+	}
+
+	UserAttributeKeyBucket struct {
+		prefix Prefix
+		id     cid.ID
+		key    string
+	}
+
+	UserAttributeValueBucket struct {
+		value string
+	}
+)
+
+type (
+	FilterResolver = func(result bool) common.FilterResult
+
+	Resolvers struct {
+		cidResolver FilterResolver
+		oidResolver FilterResolver
+	}
+)
+
+var (
+	StrictResolver  = func(x bool) common.FilterResult { return common.IfThenElse(x, common.Yes, common.No) }
+	LenientResolver = func(x bool) common.FilterResult { return common.IfThenElse(x, common.Yes, common.Maybe) }
+)
+
+var (
+	ErrNotBucket          = errors.New("not a bucket")
+	ErrInvalidKeyLength   = errors.New("invalid key length")
+	ErrInvalidValueLength = errors.New("invalid value length")
+	ErrInvalidPrefix      = errors.New("invalid prefix")
+)
+
+func NewPrefixBucketParser(prefix Prefix, next common.Parser, resolvers Resolvers) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		if len(key) != 1 {
+			return nil, nil, ErrInvalidKeyLength
+		}
+		var b PrefixBucket
+		if b.prefix = Prefix(key[0]); b.prefix != prefix {
+			return nil, nil, ErrInvalidPrefix
+		}
+		b.resolvers = resolvers
+		return &b, next, nil
+	}
+}
+
+func NewPrefixContainerBucketParser(prefix Prefix, next common.Parser, resolvers Resolvers) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		if len(key) != 33 {
+			return nil, nil, ErrInvalidKeyLength
+		}
+		var b PrefixContainerBucket
+		if b.prefix = Prefix(key[0]); b.prefix != prefix {
+			return nil, nil, ErrInvalidPrefix
+		}
+		if err := b.id.Decode(key[1:]); err != nil {
+			return nil, nil, err
+		}
+		b.resolvers = resolvers
+		return &b, next, nil
+	}
+}
+
+func NewUserBucketParser(next common.Parser, resolvers Resolvers) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		var b UserBucket
+		if err := b.id.DecodeString(base58.Encode(key)); err != nil {
+			return nil, nil, err
+		}
+		b.resolvers = resolvers
+		return &b, next, nil
+	}
+}
+
+func NewContainerBucketParser(next common.Parser, resolvers Resolvers) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		if len(key) != 32 {
+			return nil, nil, ErrInvalidKeyLength
+		}
+		var b ContainerBucket
+		if err := b.id.Decode(key); err != nil {
+			return nil, nil, err
+		}
+		b.resolvers = resolvers
+		return &b, next, nil
+	}
+}
+
+func NewUserAttributeKeyBucketParser(next common.Parser) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		if len(key) < 34 {
+			return nil, nil, ErrInvalidKeyLength
+		}
+		var b UserAttributeKeyBucket
+		if b.prefix = Prefix(key[0]); b.prefix != UserAttribute {
+			return nil, nil, ErrInvalidPrefix
+		}
+		if err := b.id.Decode(key[1:33]); err != nil {
+			return nil, nil, err
+		}
+		b.key = string(key[33:])
+		return &b, next, nil
+	}
+}
+
+func NewUserAttributeValueBucketParser(next common.Parser) common.Parser {
+	return func(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+		if value != nil {
+			return nil, nil, ErrNotBucket
+		}
+		if len(key) == 0 {
+			return nil, nil, ErrInvalidKeyLength
+		}
+		var b UserAttributeValueBucket
+		b.value = string(key)
+		return &b, next, nil
+	}
+}

cmd/frostfs-lens/internal/schema/metabase/parser.go

@@ -0,0 +1,29 @@
+package metabase
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/metabase/buckets"
+)
+
+var MetabaseParser = common.WithFallback(
+	common.Any(
+		buckets.GraveyardParser,
+		buckets.GarbageParser,
+		buckets.ContainerVolumeParser,
+		buckets.LockedParser,
+		buckets.ShardInfoParser,
+		buckets.PrimaryParser,
+		buckets.LockersParser,
+		buckets.TombstoneParser,
+		buckets.SmallParser,
+		buckets.RootParser,
+		buckets.OwnerParser,
+		buckets.UserAttributeParser,
+		buckets.PayloadHashParser,
+		buckets.ParentParser,
+		buckets.SplitParser,
+		buckets.ContainerCountersParser,
+		buckets.ECInfoParser,
+	),
+	common.RawParser.ToFallbackParser(),
+)

cmd/frostfs-lens/internal/schema/metabase/records/detailed.go

@@ -0,0 +1,65 @@
+package records
+
+import (
+	"github.com/davecgh/go-spew/spew"
+)
+
+func (r *GraveyardRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *GarbageRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ContainerVolumeRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *LockedRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ShardInfoRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ObjectRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *SmallRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *RootRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *OwnerRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *UserAttributeRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *PayloadHashRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ParentRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *SplitRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ContainerCountersRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (r *ECInfoRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}

cmd/frostfs-lens/internal/schema/metabase/records/filter.go

@@ -0,0 +1,145 @@
+package records
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+)
+
+func (r *GraveyardRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.object.Container().Equals(id), common.Yes, common.No)
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.object.Object().Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *GarbageRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.addr.Container().Equals(id), common.Yes, common.No)
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.addr.Object().Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *ContainerVolumeRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *ShardInfoRecord) Filter(string, any) common.FilterResult {
+	return common.No
+}
+
+func (r *LockedRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *ObjectRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *SmallRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *RootRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *OwnerRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *UserAttributeRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *PayloadHashRecord) Filter(string, any) common.FilterResult {
+	return common.No
+}
+
+func (r *ParentRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.parent.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *SplitRecord) Filter(string, any) common.FilterResult {
+	return common.No
+}
+
+func (r *ContainerCountersRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}
+
+func (r *ECInfoRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.id.Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}

cmd/frostfs-lens/internal/schema/metabase/records/parsers.go

@@ -0,0 +1,251 @@
+package records
+
+import (
+	"encoding/binary"
+	"errors"
+	"strconv"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
+	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"
+)
+
+var (
+	ErrInvalidKeyLength   = errors.New("invalid key length")
+	ErrInvalidValueLength = errors.New("invalid value length")
+	ErrInvalidPrefix      = errors.New("invalid prefix")
+)
+
+func GraveyardRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) != 64 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+	if len(value) != 64 {
+		return nil, nil, ErrInvalidValueLength
+	}
+	var (
+		cnr cid.ID
+		obj oid.ID
+		r   GraveyardRecord
+	)
+
+	_ = cnr.Decode(key[:32])
+	_ = obj.Decode(key[32:])
+
+	r.object.SetContainer(cnr)
+	r.object.SetObject(obj)
+
+	_ = cnr.Decode(value[:32])
+	_ = obj.Decode(value[32:])
+
+	r.tombstone.SetContainer(cnr)
+	r.tombstone.SetObject(obj)
+
+	return &r, nil, nil
+}
+
+func GarbageRecordParser(key, _ []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) != 64 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+	var (
+		cnr cid.ID
+		obj oid.ID
+		r   GarbageRecord
+	)
+
+	_ = cnr.Decode(key[:32])
+	_ = obj.Decode(key[32:])
+
+	r.addr.SetContainer(cnr)
+	r.addr.SetObject(obj)
+
+	return &r, nil, nil
+}
+
+func ContainerVolumeRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) != 32 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+	if len(value) != 8 {
+		return nil, nil, ErrInvalidValueLength
+	}
+	var r ContainerVolumeRecord
+
+	_ = r.id.Decode(key)
+	r.volume = binary.LittleEndian.Uint64(value)
+
+	return &r, nil, nil
+}
+
+func LockedRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var (
+		r   LockedRecord
+		err error
+	)
+
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	if r.ids, err = DecodeOIDs(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func ShardInfoRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) == 0 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+
+	var r ShardInfoRecord
+	if string(key) == "id" {
+		r.label = string(key)
+		r.value = shard.ID(value).String()
+
+		return &r, nil, nil
+	}
+
+	if len(value) != 8 {
+		return nil, nil, ErrInvalidValueLength
+	}
+	r.label = string(key)
+	r.value = strconv.FormatUint(binary.LittleEndian.Uint64(value), 10)
+
+	return &r, nil, nil
+}
+
+func ObjectRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) != 32 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+	var r ObjectRecord
+
+	_ = r.id.Decode(key)
+	if err := r.object.Unmarshal(value); err != nil {
+		return nil, nil, err
+	}
+
+	return &r, nil, nil
+}
+
+func SmallRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var r SmallRecord
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	if len(value) != 0 {
+		x := string(value)
+		r.storageID = &x
+	}
+	return &r, nil, nil
+}
+
+func RootRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var r RootRecord
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	if len(value) == 0 {
+		return &r, nil, nil
+	}
+	r.info = &objectSDK.SplitInfo{}
+	if err := r.info.Unmarshal(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func OwnerRecordParser(key, _ []byte) (common.SchemaEntry, common.Parser, error) {
+	var r OwnerRecord
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func UserAttributeRecordParser(key, _ []byte) (common.SchemaEntry, common.Parser, error) {
+	var r UserAttributeRecord
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func PayloadHashRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(key) != 32 {
+		return nil, nil, ErrInvalidKeyLength
+	}
+	var (
+		err error
+		r   PayloadHashRecord
+	)
+
+	r.checksum.SetSHA256([32]byte(key))
+	if r.ids, err = DecodeOIDs(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func ParentRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var (
+		r   ParentRecord
+		err error
+	)
+	if err = r.parent.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	if r.ids, err = DecodeOIDs(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func SplitRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var (
+		err error
+		r   SplitRecord
+	)
+	if err = r.id.UnmarshalBinary(key); err != nil {
+		return nil, nil, err
+	}
+	if r.ids, err = DecodeOIDs(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}
+
+func ContainerCountersRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if len(value) != 24 {
+		return nil, nil, ErrInvalidValueLength
+	}
+
+	var r ContainerCountersRecord
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+
+	r.logical = binary.LittleEndian.Uint64(value[:8])
+	r.physical = binary.LittleEndian.Uint64(value[8:16])
+	r.user = binary.LittleEndian.Uint64(value[16:24])
+
+	return &r, nil, nil
+}
+
+func ECInfoRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	var (
+		r   ECInfoRecord
+		err error
+	)
+
+	if err := r.id.Decode(key); err != nil {
+		return nil, nil, err
+	}
+	if r.ids, err = DecodeOIDs(value); err != nil {
+		return nil, nil, err
+	}
+	return &r, nil, nil
+}

cmd/frostfs-lens/internal/schema/metabase/records/string.go

@@ -0,0 +1,135 @@
+package records
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+func (r *GraveyardRecord) String() string {
+	return fmt.Sprintf(
+		"Object CID %s OID %s %c Tombstone CID %s OID %s",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.object.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.object.Object()), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		common.FormatSimple(fmt.Sprintf("%-44s", r.tombstone.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.tombstone.Object()), tcell.ColorAqua),
+	)
+}
+
+func (r *GarbageRecord) String() string {
+	return fmt.Sprintf(
+		"CID %-44s OID %-44s",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Object()), tcell.ColorAqua),
+	)
+}
+
+func (r *ContainerVolumeRecord) String() string {
+	return fmt.Sprintf(
+		"CID %-44s %c %d",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		r.volume,
+	)
+}
+
+func (r *LockedRecord) String() string {
+	return fmt.Sprintf(
+		"Locker OID %s %c Locked [%d]OID {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		len(r.ids),
+	)
+}
+
+func (r *ShardInfoRecord) String() string {
+	return fmt.Sprintf("%-13s %c %s", r.label, tview.Borders.Vertical, r.value)
+}
+
+func (r *ObjectRecord) String() string {
+	return fmt.Sprintf(
+		"OID %s %c Object {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+}
+
+func (r *SmallRecord) String() string {
+	s := fmt.Sprintf(
+		"OID %s %c",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+	if r.storageID != nil {
+		s = fmt.Sprintf("%s %s", s, *r.storageID)
+	}
+	return s
+}
+
+func (r *RootRecord) String() string {
+	s := fmt.Sprintf(
+		"Root OID %s %c",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+	if r.info != nil {
+		s += " Split info {...}"
+	}
+	return s
+}
+
+func (r *OwnerRecord) String() string {
+	return "OID " + common.FormatSimple(r.id.String(), tcell.ColorAqua)
+}
+
+func (r *UserAttributeRecord) String() string {
+	return "OID " + common.FormatSimple(r.id.String(), tcell.ColorAqua)
+}
+
+func (r *PayloadHashRecord) String() string {
+	return fmt.Sprintf(
+		"Checksum %s %c [%d]OID {...}",
+		common.FormatSimple(r.checksum.String(), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		len(r.ids),
+	)
+}
+
+func (r *ParentRecord) String() string {
+	return fmt.Sprintf(
+		"Parent OID %s %c [%d]OID {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.parent), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		len(r.ids),
+	)
+}
+
+func (r *SplitRecord) String() string {
+	return fmt.Sprintf(
+		"Split ID %s %c [%d]OID {...}",
+		common.FormatSimple(r.id.String(), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		len(r.ids),
+	)
+}
+
+func (r *ContainerCountersRecord) String() string {
+	return fmt.Sprintf(
+		"CID %s %c logical %d, physical %d, user %d",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		r.logical, r.physical, r.user,
+	)
+}
+
+func (r *ECInfoRecord) String() string {
+	return fmt.Sprintf(
+		"OID %s %c [%d]OID {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.id), tcell.ColorAqua),
+		tview.Borders.Vertical,
+		len(r.ids),
+	)
+}

cmd/frostfs-lens/internal/schema/metabase/records/types.go

@@ -0,0 +1,82 @@
+package records
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
+	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"
+	"github.com/google/uuid"
+)
+
+type (
+	GraveyardRecord struct {
+		object, tombstone oid.Address
+	}
+
+	GarbageRecord struct {
+		addr oid.Address
+	}
+
+	ContainerVolumeRecord struct {
+		id     cid.ID
+		volume uint64
+	}
+
+	LockedRecord struct {
+		id  oid.ID
+		ids []oid.ID
+	}
+
+	ShardInfoRecord struct {
+		label string
+		value string
+	}
+
+	ObjectRecord struct {
+		id     oid.ID
+		object objectSDK.Object
+	}
+
+	SmallRecord struct {
+		id        oid.ID
+		storageID *string // optional
+	}
+
+	RootRecord struct {
+		id   oid.ID
+		info *objectSDK.SplitInfo // optional
+	}
+
+	OwnerRecord struct {
+		id oid.ID
+	}
+
+	UserAttributeRecord struct {
+		id oid.ID
+	}
+
+	PayloadHashRecord struct {
+		checksum checksum.Checksum
+		ids      []oid.ID
+	}
+
+	ParentRecord struct {
+		parent oid.ID
+		ids    []oid.ID
+	}
+
+	SplitRecord struct {
+		id  uuid.UUID
+		ids []oid.ID
+	}
+
+	ContainerCountersRecord struct {
+		id                      cid.ID
+		logical, physical, user uint64
+	}
+
+	ECInfoRecord struct {
+		id  oid.ID
+		ids []oid.ID
+	}
+)

cmd/frostfs-lens/internal/schema/metabase/records/util.go

@@ -0,0 +1,20 @@
+package records
+
+import (
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+)
+
+func DecodeOIDs(data []byte) ([]oid.ID, error) {
+	r := io.NewBinReaderFromBuf(data)
+
+	size := r.ReadVarUint()
+	oids := make([]oid.ID, size)
+
+	for i := uint64(0); i < size; i++ {
+		if err := oids[i].Decode(r.ReadVarBytes()); err != nil {
+			return nil, err
+		}
+	}
+	return oids, nil
+}

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

@@ -0,0 +1,63 @@
+package writecache
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/mr-tron/base58"
+)
+
+var WritecacheParser = common.WithFallback(
+	DefaultBucketParser,
+	common.RawParser.ToFallbackParser(),
+)
+
+func DefaultBucketParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if value != nil {
+		return nil, nil, errors.New("not a bucket")
+	}
+	if !bytes.Equal(key, []byte{0}) {
+		return nil, nil, errors.New("invalid key")
+	}
+	return &DefaultBucket{}, DefaultRecordParser, nil
+}
+
+func DefaultRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	parts := strings.Split(string(key), "/")
+
+	if len(parts) != 2 {
+		return nil, nil, errors.New("invalid key, expected address string <CID>/<OID>")
+	}
+
+	cnrRaw, err := base58.Decode(parts[0])
+	if err != nil {
+		return nil, nil, errors.New("can't decode CID string")
+	}
+	objRaw, err := base58.Decode(parts[1])
+	if err != nil {
+		return nil, nil, errors.New("can't decode OID string")
+	}
+
+	cnr := cid.ID{}
+	if err := cnr.Decode(cnrRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode CID: %w", err)
+	}
+	obj := oid.ID{}
+	if err := obj.Decode(objRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode OID: %w", err)
+	}
+
+	var r DefaultRecord
+
+	r.addr.SetContainer(cnr)
+	r.addr.SetObject(obj)
+
+	r.data = value[:]
+
+	return &r, nil, nil
+}

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

@@ -0,0 +1,66 @@
+package writecache
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/davecgh/go-spew/spew"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type (
+	DefaultBucket struct{}
+
+	DefaultRecord struct {
+		addr oid.Address
+		data []byte
+	}
+)
+
+func (b *DefaultBucket) String() string {
+	return common.FormatSimple("0 Default", tcell.ColorLime)
+}
+
+func (r *DefaultRecord) String() string {
+	return fmt.Sprintf(
+		"CID %s OID %s %c Data {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Object()), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+}
+
+func (b *DefaultBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (r *DefaultRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (b *DefaultBucket) Filter(typ string, _ any) common.FilterResult {
+	switch typ {
+	case "cid":
+		return common.Maybe
+	case "oid":
+		return common.Maybe
+	default:
+		return common.No
+	}
+}
+
+func (r *DefaultRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.addr.Container().Equals(id), common.Yes, common.No)
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.addr.Object().Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}

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

@@ -0,0 +1,257 @@
+package tui
+
+import (
+	"context"
+	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type BucketsView struct {
+	*tview.Box
+
+	mu sync.Mutex
+
+	view         *tview.TreeView
+	nodeToUpdate *tview.TreeNode
+
+	ui     *UI
+	filter *Filter
+}
+
+type bucketNode struct {
+	bucket *Bucket
+	filter *Filter
+}
+
+func NewBucketsView(ui *UI, filter *Filter) *BucketsView {
+	return &BucketsView{
+		Box:    tview.NewBox(),
+		view:   tview.NewTreeView(),
+		ui:     ui,
+		filter: filter,
+	}
+}
+
+func (v *BucketsView) Mount(_ context.Context) error {
+	root := tview.NewTreeNode(".")
+	root.SetExpanded(false)
+	root.SetSelectable(false)
+	root.SetReference(&bucketNode{
+		bucket: &Bucket{NextParser: v.ui.rootParser},
+		filter: v.filter,
+	})
+
+	v.nodeToUpdate = root
+
+	v.view.SetRoot(root)
+	v.view.SetCurrentNode(root)
+
+	return nil
+}
+
+func (v *BucketsView) Update(ctx context.Context) error {
+	if v.nodeToUpdate == nil {
+		return nil
+	}
+	defer func() { v.nodeToUpdate = nil }()
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	ready := make(chan struct{})
+	errCh := make(chan error)
+
+	tmp := tview.NewTreeNode(v.nodeToUpdate.GetText())
+	tmp.SetReference(v.nodeToUpdate.GetReference())
+
+	node := v.nodeToUpdate.GetReference().(*bucketNode)
+
+	go func() {
+		defer close(ready)
+
+		hasBuckets, err := HasBuckets(ctx, v.ui.db, node.bucket.Path)
+		if err != nil {
+			errCh <- err
+		}
+
+		// Show the selected bucket's records instead.
+		if !hasBuckets && node.bucket.NextParser != nil {
+			v.ui.moveNextPage(NewRecordsView(v.ui, node.bucket, node.filter))
+		}
+
+		if v.nodeToUpdate.IsExpanded() {
+			return
+		}
+
+		err = v.loadNodeChildren(ctx, tmp, node.filter)
+		if err != nil {
+			errCh <- err
+		}
+	}()
+
+	select {
+	case <-ctx.Done():
+	case <-ready:
+		v.mu.Lock()
+		v.nodeToUpdate.SetChildren(tmp.GetChildren())
+		v.nodeToUpdate.SetExpanded(!v.nodeToUpdate.IsExpanded())
+		v.mu.Unlock()
+	case err := <-errCh:
+		return err
+	}
+
+	return nil
+}
+
+func (v *BucketsView) Unmount() {
+}
+
+func (v *BucketsView) Draw(screen tcell.Screen) {
+	x, y, width, height := v.GetInnerRect()
+	v.view.SetRect(x, y, width, height)
+
+	v.view.Draw(screen)
+}
+
+func (v *BucketsView) loadNodeChildren(
+	ctx context.Context, node *tview.TreeNode, filter *Filter,
+) error {
+	parentBucket := node.GetReference().(*bucketNode).bucket
+
+	path := parentBucket.Path
+	parser := parentBucket.NextParser
+
+	buffer, err := LoadBuckets(ctx, v.ui.db, path, v.ui.loadBufferSize)
+	if err != nil {
+		return err
+	}
+
+	for item := range buffer {
+		if item.err != nil {
+			return item.err
+		}
+		bucket := item.val
+
+		bucket.Entry, bucket.NextParser, err = parser(bucket.Name, nil)
+		if err != nil {
+			return err
+		}
+
+		satisfies, err := v.bucketSatisfiesFilter(ctx, bucket, filter)
+		if err != nil {
+			return err
+		}
+		if !satisfies {
+			continue
+		}
+
+		child := tview.NewTreeNode(bucket.Entry.String()).
+			SetSelectable(true).
+			SetExpanded(false).
+			SetReference(&bucketNode{
+				bucket: bucket,
+				filter: filter.Apply(bucket.Entry),
+			})
+
+		node.AddChild(child)
+	}
+
+	return nil
+}
+
+func (v *BucketsView) bucketSatisfiesFilter(
+	ctx context.Context, bucket *Bucket, filter *Filter,
+) (bool, error) {
+	// Does the current bucket satisfies the filter?
+	filter = filter.Apply(bucket.Entry)
+
+	if filter.Result() == common.Yes {
+		return true, nil
+	}
+
+	if filter.Result() == common.No {
+		return false, nil
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	// Check the current bucket's nested buckets if exist
+	bucketsBuffer, err := LoadBuckets(ctx, v.ui.db, bucket.Path, v.ui.loadBufferSize)
+	if err != nil {
+		return false, err
+	}
+
+	for item := range bucketsBuffer {
+		if item.err != nil {
+			return false, item.err
+		}
+		b := item.val
+
+		b.Entry, b.NextParser, err = bucket.NextParser(b.Name, nil)
+		if err != nil {
+			return false, err
+		}
+
+		satisfies, err := v.bucketSatisfiesFilter(ctx, b, filter)
+		if err != nil {
+			return false, err
+		}
+		if satisfies {
+			return true, nil
+		}
+	}
+
+	// Check the current bucket's nested records if exist
+	recordsBuffer, err := LoadRecords(ctx, v.ui.db, bucket.Path, v.ui.loadBufferSize)
+	if err != nil {
+		return false, err
+	}
+
+	for item := range recordsBuffer {
+		if item.err != nil {
+			return false, item.err
+		}
+		r := item.val
+
+		r.Entry, _, err = bucket.NextParser(r.Key, r.Value)
+		if err != nil {
+			return false, err
+		}
+
+		if filter.Apply(r.Entry).Result() == common.Yes {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+func (v *BucketsView) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+	return v.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
+		currentNode := v.view.GetCurrentNode()
+		if currentNode == nil {
+			return
+		}
+
+		switch event.Key() {
+		case tcell.KeyEnter:
+			// Expand or collapse the selected bucket's nested buckets,
+			// otherwise, navigate to that bucket's records.
+			v.nodeToUpdate = currentNode
+		case tcell.KeyCtrlR:
+			// Navigate to the selected bucket's records.
+			bucketNode := currentNode.GetReference().(*bucketNode)
+			v.ui.moveNextPage(NewRecordsView(v.ui, bucketNode.bucket, bucketNode.filter))
+		case tcell.KeyCtrlD:
+			// Navigate to the selected bucket's detailed view.
+			bucketNode := currentNode.GetReference().(*bucketNode)
+			v.ui.moveNextPage(NewDetailedView(bucketNode.bucket.Entry.DetailedString()))
+		default:
+			v.view.InputHandler()(event, func(tview.Primitive) {})
+		}
+	})
+}

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

@@ -0,0 +1,160 @@
+package tui
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"go.etcd.io/bbolt"
+)
+
+type Item[T any] struct {
+	val T
+	err error
+}
+
+func resolvePath(tx *bbolt.Tx, path [][]byte) (*bbolt.Bucket, error) {
+	if len(path) == 0 {
+		return nil, errors.New("can't find bucket without path")
+	}
+
+	name := path[0]
+	bucket := tx.Bucket(name)
+	if bucket == nil {
+		return nil, fmt.Errorf("no bucket with name %s", name)
+	}
+	for _, name := range path[1:] {
+		bucket = bucket.Bucket(name)
+		if bucket == nil {
+			return nil, fmt.Errorf("no bucket with name %s", name)
+		}
+	}
+	return bucket, nil
+}
+
+func load[T any](
+	ctx context.Context, db *bbolt.DB, path [][]byte, bufferSize int,
+	filter func(key, value []byte) bool, transform func(key, value []byte) T,
+) (<-chan Item[T], error) {
+	buffer := make(chan Item[T], bufferSize)
+
+	go func() {
+		defer close(buffer)
+
+		err := db.View(func(tx *bbolt.Tx) error {
+			var cursor *bbolt.Cursor
+			if len(path) == 0 {
+				cursor = tx.Cursor()
+			} else {
+				bucket, err := resolvePath(tx, path)
+				if err != nil {
+					buffer <- Item[T]{err: fmt.Errorf("can't find bucket: %w", err)}
+					return nil
+				}
+				cursor = bucket.Cursor()
+			}
+
+			key, value := cursor.First()
+			for {
+				if key == nil {
+					return nil
+				}
+				if filter != nil && !filter(key, value) {
+					key, value = cursor.Next()
+					continue
+				}
+
+				select {
+				case <-ctx.Done():
+					return nil
+				case buffer <- Item[T]{val: transform(key, value)}:
+					key, value = cursor.Next()
+				}
+			}
+		})
+		if err != nil {
+			buffer <- Item[T]{err: err}
+		}
+	}()
+
+	return buffer, nil
+}
+
+func LoadBuckets(
+	ctx context.Context, db *bbolt.DB, path [][]byte, bufferSize int,
+) (<-chan Item[*Bucket], error) {
+	buffer, err := load(
+		ctx, db, path, bufferSize,
+		func(_, value []byte) bool {
+			return value == nil
+		},
+		func(key, _ []byte) *Bucket {
+			base := make([][]byte, 0, len(path))
+			base = append(base, path...)
+
+			return &Bucket{
+				Name: key,
+				Path: append(base, key),
+			}
+		},
+	)
+	if err != nil {
+		return nil, fmt.Errorf("can't start iterating bucket: %w", err)
+	}
+
+	return buffer, nil
+}
+
+func LoadRecords(
+	ctx context.Context, db *bbolt.DB, path [][]byte, bufferSize int,
+) (<-chan Item[*Record], error) {
+	buffer, err := load(
+		ctx, db, path, bufferSize,
+		func(_, value []byte) bool {
+			return value != nil
+		},
+		func(key, value []byte) *Record {
+			base := make([][]byte, 0, len(path))
+			base = append(base, path...)
+
+			return &Record{
+				Key:   key,
+				Value: value,
+				Path:  append(base, key),
+			}
+		},
+	)
+	if err != nil {
+		return nil, fmt.Errorf("can't start iterating bucket: %w", err)
+	}
+
+	return buffer, nil
+}
+
+// HasBuckets checks if a bucket has nested buckets. It relies on assumption
+// that a bucket can have either nested buckets or records but not both.
+func HasBuckets(ctx context.Context, db *bbolt.DB, path [][]byte) (bool, error) {
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	buffer, err := load(
+		ctx, db, path, 1,
+		nil,
+		func(_, value []byte) []byte { return value },
+	)
+	if err != nil {
+		return false, err
+	}
+
+	x, ok := <-buffer
+	if !ok {
+		return false, nil
+	}
+	if x.err != nil {
+		return false, err
+	}
+	if x.val != nil {
+		return false, err
+	}
+	return true, nil
+}

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

@@ -0,0 +1,24 @@
+package tui
+
+import (
+	"context"
+
+	"github.com/rivo/tview"
+)
+
+type DetailedView struct {
+	*tview.TextView
+}
+
+func NewDetailedView(detailed string) *DetailedView {
+	v := &DetailedView{
+		TextView: tview.NewTextView(),
+	}
+	v.SetDynamicColors(true)
+	v.SetText(detailed)
+	return v
+}
+
+func (v *DetailedView) Mount(_ context.Context) error  { return nil }
+func (v *DetailedView) Update(_ context.Context) error { return nil }
+func (v *DetailedView) Unmount()                       {}

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

@@ -0,0 +1,44 @@
+package tui
+
+import (
+	"maps"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+)
+
+type Filter struct {
+	values  map[string]any
+	results map[string]common.FilterResult
+}
+
+func NewFilter(values map[string]any) *Filter {
+	f := &Filter{
+		values:  maps.Clone(values),
+		results: make(map[string]common.FilterResult),
+	}
+	for tag := range values {
+		f.results[tag] = common.No
+	}
+	return f
+}
+
+func (f *Filter) Apply(e common.SchemaEntry) *Filter {
+	filter := &Filter{
+		values:  f.values,
+		results: maps.Clone(f.results),
+	}
+
+	for tag, value := range filter.values {
+		filter.results[tag] = max(filter.results[tag], e.Filter(tag, value))
+	}
+
+	return filter
+}
+
+func (f *Filter) Result() common.FilterResult {
+	current := common.Yes
+	for _, r := range f.results {
+		current = min(r, current)
+	}
+	return current
+}

cmd/frostfs-lens/internal/tui/help-pages/hotkeys.txt

@@ -0,0 +1,38 @@
+[green::b]HOTKEYS[-::-]
+
+    [green::b]Navigation[-::-]
+
+        [yellow::b]Down Arrow[-::-] / [yellow::b]j[-::-]
+            Scroll down.
+
+        [yellow::b]Up Arrow[-::-] / [yellow::b]k[-::-]
+            Scroll up.
+
+        [yellow::b]Page Down[-::-] / [yellow::b]Ctrl-f[-::-]
+            Scroll down by a full page.
+
+        [yellow::b]Page Up[-::-] / [yellow::b]Ctrl-b[-::-]
+            Scroll up by a full page.
+
+    [green::b]Actions[-::-]
+
+        [yellow::b]Enter[-::-]
+            Perform actions based on the current context:
+            - In Buckets View:
+                - Expand/collapse the selected bucket to show/hide its nested buckets.
+                - If no nested buckets exist, navigate to the selected bucket's records.
+            - In Records View: Open the detailed view of the selected record.
+
+        [yellow::b]Escape[-::-]
+            Return to the previous page, opposite of [yellow::b]Enter[-::-].
+
+        Refer to the [green::b]SEARCHING[-::-] section for more specific actions.
+
+
+    [green::b]Alternative Action Hotkeys[-::-]
+
+        [yellow::b]Ctrl-r[-::-]
+            Directly navigate to the selected bucket's records.
+
+        [yellow::b]Ctrl-d[-::-]
+            Access the detailed view of the selected bucket.

cmd/frostfs-lens/internal/tui/help-pages/searching.txt

@@ -0,0 +1,26 @@
+[green::b]SEARCHING[-::-]
+
+	[green::b]Hotkeys[-::-]
+
+		[yellow::b]/[-::-]
+			Initiate the search prompt.
+			- The prompt follows this syntax: [yellow::b]tag:value [+ tag:value]...[-::-]
+			- Multiple filter can be combined with [yellow::b]+[-::-], the result is an intersection of those filters' result sets.
+			- Any leading and trailing whitespace will be ignored.
+			- An empty prompt will return all results with no filters applied.
+			- Refer to the [green::b]Available Search Filters[-::-] section below for a list of valid filter tags.
+
+		[yellow::b]Enter[-::-]
+			Execute the search based on the entered prompt.
+			- If the prompt is invalid, an error message will be displayed.
+
+		[yellow::b]Escape[-::-]
+			Exit the search prompt without performing a search.
+
+		[yellow::b]Down Arrow[-::-], [yellow::b]Up Arrow[-::-]
+			Scroll through the search history.
+
+
+	[green::b]Available Search Filters[-::-]
+
+%s

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

@@ -0,0 +1,101 @@
+package tui
+
+import (
+	_ "embed"
+	"fmt"
+	"strings"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var (
+	//go:embed help-pages/hotkeys.txt
+	hotkeysHelpText string
+
+	//go:embed help-pages/searching.txt
+	searchingHelpText string
+)
+
+type HelpPage struct {
+	*tview.Box
+	pages       []*tview.TextView
+	currentPage int
+
+	filters     []string
+	filterHints map[string]string
+}
+
+func NewHelpPage(filters []string, hints map[string]string) *HelpPage {
+	hp := &HelpPage{
+		Box:         tview.NewBox(),
+		filters:     filters,
+		filterHints: hints,
+	}
+
+	page := tview.NewTextView().
+		SetDynamicColors(true).
+		SetText(hotkeysHelpText)
+	hp.addPage(page)
+
+	page = tview.NewTextView().
+		SetDynamicColors(true).
+		SetText(fmt.Sprintf(searchingHelpText, hp.getFiltersText()))
+	hp.addPage(page)
+
+	return hp
+}
+
+func (hp *HelpPage) addPage(page *tview.TextView) {
+	hp.pages = append(hp.pages, page)
+}
+
+func (hp *HelpPage) getFiltersText() string {
+	if len(hp.filters) == 0 {
+		return "\t\tNo filters defined.\n"
+	}
+
+	filtersText := strings.Builder{}
+	gapSize := 4
+
+	tagMaxWidth := 3
+	for _, filter := range hp.filters {
+		tagMaxWidth = max(tagMaxWidth, len(filter))
+	}
+	filtersText.WriteString("\t\t[yellow::b]Tag")
+	filtersText.WriteString(strings.Repeat(" ", gapSize))
+	filtersText.WriteString("\tValue[-::-]\n\n")
+
+	for _, filter := range hp.filters {
+		filtersText.WriteString("\t\t")
+		filtersText.WriteString(filter)
+		filtersText.WriteString(strings.Repeat(" ", tagMaxWidth-len(filter)+gapSize))
+		filtersText.WriteString(hp.filterHints[filter])
+		filtersText.WriteRune('\n')
+	}
+
+	return filtersText.String()
+}
+
+func (hp *HelpPage) Draw(screen tcell.Screen) {
+	x, y, width, height := hp.GetInnerRect()
+	hp.pages[hp.currentPage].SetRect(x+1, y+1, width-2, height-2)
+	hp.pages[hp.currentPage].Draw(screen)
+}
+
+func (hp *HelpPage) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+	return hp.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
+		if event.Key() == tcell.KeyEnter {
+			hp.currentPage++
+			hp.currentPage %= len(hp.pages)
+			return
+		}
+		hp.pages[hp.currentPage].InputHandler()(event, func(tview.Primitive) {})
+	})
+}
+
+func (hp *HelpPage) MouseHandler() func(action tview.MouseAction, event *tcell.EventMouse, setFocus func(p tview.Primitive)) (consumed bool, capture tview.Primitive) {
+	return hp.WrapMouseHandler(func(action tview.MouseAction, event *tcell.EventMouse, _ func(tview.Primitive)) (consumed bool, capture tview.Primitive) {
+		return hp.pages[hp.currentPage].MouseHandler()(action, event, func(tview.Primitive) {})
+	})
+}

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

@@ -0,0 +1,77 @@
+package tui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type InputFieldWithHistory struct {
+	*tview.InputField
+	history        []string
+	historyLimit   int
+	historyPointer int
+	currentContent string
+}
+
+func NewInputFieldWithHistory(historyLimit int) *InputFieldWithHistory {
+	return &InputFieldWithHistory{
+		InputField:   tview.NewInputField(),
+		historyLimit: historyLimit,
+	}
+}
+
+func (f *InputFieldWithHistory) AddToHistory(s string) {
+	// Stop scrolling history on history change, need to start scrolling again.
+	defer func() { f.historyPointer = len(f.history) }()
+
+	// Used history data for search prompt, so just make that data recent.
+	if f.historyPointer != len(f.history) && s == f.history[f.historyPointer] {
+		f.history = append(f.history[:f.historyPointer], f.history[f.historyPointer+1:]...)
+		f.history = append(f.history, s)
+	}
+
+	if len(f.history) == f.historyLimit {
+		f.history = f.history[1:]
+	}
+	f.history = append(f.history, s)
+}
+
+func (f *InputFieldWithHistory) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+	return f.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
+		switch event.Key() {
+		case tcell.KeyDown:
+			if len(f.history) == 0 {
+				return
+			}
+			// Need to start iterating before.
+			if f.historyPointer == len(f.history) {
+				return
+			}
+			// Iterate to most recent prompts.
+			f.historyPointer++
+			// Stop iterating over history.
+			if f.historyPointer == len(f.history) {
+				f.InputField.SetText(f.currentContent)
+				return
+			}
+			f.InputField.SetText(f.history[f.historyPointer])
+		case tcell.KeyUp:
+			if len(f.history) == 0 {
+				return
+			}
+			// Start iterating over history.
+			if f.historyPointer == len(f.history) {
+				f.currentContent = f.InputField.GetText()
+			}
+			// End of history.
+			if f.historyPointer == 0 {
+				return
+			}
+			// Iterate to least recent prompts.
+			f.historyPointer--
+			f.InputField.SetText(f.history[f.historyPointer])
+		default:
+			f.InputField.InputHandler()(event, func(tview.Primitive) {})
+		}
+	})
+}

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

@@ -0,0 +1,72 @@
+package tui
+
+import (
+	"context"
+	"fmt"
+	"sync/atomic"
+	"time"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type LoadingBar struct {
+	*tview.Box
+	view           *tview.TextView
+	secondsElapsed atomic.Int64
+	needDrawFunc   func()
+	reset          func()
+}
+
+func NewLoadingBar(needDrawFunc func()) *LoadingBar {
+	b := &LoadingBar{
+		Box:          tview.NewBox(),
+		view:         tview.NewTextView(),
+		needDrawFunc: needDrawFunc,
+	}
+	b.view.SetBackgroundColor(tview.Styles.PrimaryTextColor)
+	b.view.SetTextColor(b.GetBackgroundColor())
+
+	return b
+}
+
+func (b *LoadingBar) Start(ctx context.Context) {
+	ctx, b.reset = context.WithCancel(ctx)
+
+	go func() {
+		ticker := time.NewTicker(1 * time.Second)
+		defer ticker.Stop()
+
+		b.secondsElapsed.Store(0)
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				b.secondsElapsed.Add(1)
+				b.needDrawFunc()
+			}
+		}
+	}()
+}
+
+func (b *LoadingBar) Stop() {
+	b.reset()
+}
+
+func (b *LoadingBar) Draw(screen tcell.Screen) {
+	seconds := b.secondsElapsed.Load()
+
+	var time string
+	switch {
+	case seconds < 60:
+		time = fmt.Sprintf("%ds", seconds)
+	default:
+		time = fmt.Sprintf("%dm%ds", seconds/60, seconds%60)
+	}
+	b.view.SetText(fmt.Sprintf(" Loading... %s (press Escape to cancel) ", time))
+
+	x, y, width, _ := b.GetInnerRect()
+	b.view.SetRect(x, y, width, 1)
+	b.view.Draw(screen)
+}

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

@@ -0,0 +1,271 @@
+package tui
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"math"
+	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type updateType int
+
+const (
+	other updateType = iota
+	moveToPrevPage
+	moveToNextPage
+	moveUp
+	moveDown
+	moveHome
+	moveEnd
+)
+
+type RecordsView struct {
+	*tview.Box
+
+	mu sync.RWMutex
+
+	onUnmount func()
+
+	bucket  *Bucket
+	records []*Record
+
+	buffer chan *Record
+
+	firstRecordIndex    int
+	lastRecordIndex     int
+	selectedRecordIndex int
+
+	updateType updateType
+
+	ui     *UI
+	filter *Filter
+}
+
+func NewRecordsView(ui *UI, bucket *Bucket, filter *Filter) *RecordsView {
+	return &RecordsView{
+		Box:    tview.NewBox(),
+		bucket: bucket,
+		ui:     ui,
+		filter: filter,
+	}
+}
+
+func (v *RecordsView) Mount(ctx context.Context) error {
+	if v.onUnmount != nil {
+		return errors.New("try to mount already mounted component")
+	}
+
+	ctx, v.onUnmount = context.WithCancel(ctx)
+
+	tempBuffer, err := LoadRecords(ctx, v.ui.db, v.bucket.Path, v.ui.loadBufferSize)
+	if err != nil {
+		return err
+	}
+
+	v.buffer = make(chan *Record, v.ui.loadBufferSize)
+	go func() {
+		defer close(v.buffer)
+
+		for item := range tempBuffer {
+			if item.err != nil {
+				v.ui.stopOnError(err)
+				break
+			}
+			record := item.val
+
+			record.Entry, _, err = v.bucket.NextParser(record.Key, record.Value)
+			if err != nil {
+				v.ui.stopOnError(err)
+				break
+			}
+
+			if v.filter.Apply(record.Entry).Result() != common.Yes {
+				continue
+			}
+
+			v.buffer <- record
+		}
+	}()
+
+	return nil
+}
+
+func (v *RecordsView) Unmount() {
+	if v.onUnmount == nil {
+		panic("try to unmount not mounted component")
+	}
+	v.onUnmount()
+	v.onUnmount = nil
+}
+
+func (v *RecordsView) Update(ctx context.Context) error {
+	_, _, _, recordsPerPage := v.GetInnerRect()
+	firstRecordIndex, lastRecordIndex, selectedRecordIndex := v.getNewIndexes()
+
+loop:
+	for len(v.records) < lastRecordIndex {
+		select {
+		case <-ctx.Done():
+			return nil
+		case record, ok := <-v.buffer:
+			if !ok {
+				break loop
+			}
+			v.records = append(v.records, record)
+		}
+	}
+
+	// Set the update type to its default value after some specific key event
+	// has been handled.
+	v.updateType = other
+
+	firstRecordIndex = max(0, min(firstRecordIndex, len(v.records)-recordsPerPage))
+	lastRecordIndex = min(firstRecordIndex+recordsPerPage, len(v.records))
+	selectedRecordIndex = min(selectedRecordIndex, lastRecordIndex-1)
+
+	v.mu.Lock()
+	v.firstRecordIndex = firstRecordIndex
+	v.lastRecordIndex = lastRecordIndex
+	v.selectedRecordIndex = selectedRecordIndex
+	v.mu.Unlock()
+
+	return nil
+}
+
+func (v *RecordsView) getNewIndexes() (int, int, int) {
+	v.mu.RLock()
+	firstRecordIndex := v.firstRecordIndex
+	lastRecordIndex := v.lastRecordIndex
+	selectedRecordIndex := v.selectedRecordIndex
+	v.mu.RUnlock()
+
+	_, _, _, recordsPerPage := v.GetInnerRect()
+
+	switch v.updateType {
+	case moveUp:
+		if selectedRecordIndex != firstRecordIndex {
+			selectedRecordIndex--
+			break
+		}
+		firstRecordIndex = max(0, firstRecordIndex-1)
+		lastRecordIndex = min(firstRecordIndex+recordsPerPage, len(v.records))
+		selectedRecordIndex = firstRecordIndex
+	case moveToPrevPage:
+		if selectedRecordIndex != firstRecordIndex {
+			selectedRecordIndex = firstRecordIndex
+			break
+		}
+		firstRecordIndex = max(0, firstRecordIndex-recordsPerPage)
+		lastRecordIndex = firstRecordIndex + recordsPerPage
+		selectedRecordIndex = firstRecordIndex
+	case moveDown:
+		if selectedRecordIndex != lastRecordIndex-1 {
+			selectedRecordIndex++
+			break
+		}
+		firstRecordIndex++
+		lastRecordIndex++
+		selectedRecordIndex++
+	case moveToNextPage:
+		if selectedRecordIndex != lastRecordIndex-1 {
+			selectedRecordIndex = lastRecordIndex - 1
+			break
+		}
+		firstRecordIndex += recordsPerPage
+		lastRecordIndex = firstRecordIndex + recordsPerPage
+		selectedRecordIndex = lastRecordIndex - 1
+	case moveHome:
+		firstRecordIndex = 0
+		lastRecordIndex = firstRecordIndex + recordsPerPage
+		selectedRecordIndex = 0
+	case moveEnd:
+		lastRecordIndex = math.MaxInt32
+		firstRecordIndex = lastRecordIndex - recordsPerPage
+		selectedRecordIndex = lastRecordIndex - 1
+	default:
+		lastRecordIndex = firstRecordIndex + recordsPerPage
+	}
+
+	return firstRecordIndex, lastRecordIndex, selectedRecordIndex
+}
+
+func (v *RecordsView) GetInnerRect() (int, int, int, int) {
+	x, y, width, height := v.Box.GetInnerRect()
+
+	// Left padding.
+	x = min(x+3, x+width-1)
+	width = max(width-3, 0)
+
+	return x, y, width, height
+}
+
+func (v *RecordsView) Draw(screen tcell.Screen) {
+	v.mu.RLock()
+	firstRecordIndex := v.firstRecordIndex
+	lastRecordIndex := v.lastRecordIndex
+	selectedRecordIndex := v.selectedRecordIndex
+	records := v.records
+	v.mu.RUnlock()
+
+	v.DrawForSubclass(screen, v)
+
+	x, y, width, height := v.GetInnerRect()
+	if height == 0 {
+		return
+	}
+
+	// No records in that bucket.
+	if firstRecordIndex == lastRecordIndex {
+		tview.Print(
+			screen, "Empty Bucket", x, y, width, tview.AlignCenter, tview.Styles.PrimaryTextColor,
+		)
+		return
+	}
+
+	for index := firstRecordIndex; index < lastRecordIndex; index++ {
+		result := records[index].Entry
+		text := result.String()
+
+		if index == selectedRecordIndex {
+			text = fmt.Sprintf("[:white]%s[:-]", text)
+			tview.Print(screen, text, x, y, width, tview.AlignLeft, tview.Styles.PrimitiveBackgroundColor)
+		} else {
+			tview.Print(screen, text, x, y, width, tview.AlignLeft, tview.Styles.PrimaryTextColor)
+		}
+
+		y++
+	}
+}
+
+func (v *RecordsView) InputHandler() func(event *tcell.EventKey, _ func(p tview.Primitive)) {
+	return v.WrapInputHandler(func(event *tcell.EventKey, _ func(p tview.Primitive)) {
+		switch m, k := event.Modifiers(), event.Key(); {
+		case m == 0 && k == tcell.KeyPgUp:
+			v.updateType = moveToPrevPage
+		case m == 0 && k == tcell.KeyPgDn:
+			v.updateType = moveToNextPage
+		case m == 0 && k == tcell.KeyUp:
+			v.updateType = moveUp
+		case m == 0 && k == tcell.KeyDown:
+			v.updateType = moveDown
+		case m == 0 && k == tcell.KeyHome:
+			v.updateType = moveHome
+		case m == 0 && k == tcell.KeyEnd:
+			v.updateType = moveEnd
+		case k == tcell.KeyEnter:
+			v.mu.RLock()
+			selectedRecordIndex := v.selectedRecordIndex
+			records := v.records
+			v.mu.RUnlock()
+			if len(records) != 0 {
+				current := records[selectedRecordIndex]
+				v.ui.moveNextPage(NewDetailedView(current.Entry.DetailedString()))
+			}
+		}
+	})
+}

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

@@ -0,0 +1,18 @@
+package tui
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+)
+
+type Bucket struct {
+	Name       []byte
+	Path       [][]byte
+	Entry      common.SchemaEntry
+	NextParser common.Parser
+}
+
+type Record struct {
+	Key, Value []byte
+	Path       [][]byte
+	Entry      common.SchemaEntry
+}

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

@@ -0,0 +1,561 @@
+package tui
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"github.com/davecgh/go-spew/spew"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+	"go.etcd.io/bbolt"
+)
+
+type Config struct {
+	LoadBufferSize      int
+	SearchHistorySize   int
+	LoadingIndicatorLag time.Duration
+}
+
+var DefaultConfig = Config{
+	LoadBufferSize:      100,
+	SearchHistorySize:   100,
+	LoadingIndicatorLag: 500 * time.Millisecond,
+}
+
+type Primitive interface {
+	tview.Primitive
+
+	Mount(ctx context.Context) error
+	Update(ctx context.Context) error
+	Unmount()
+}
+
+type UI struct {
+	*tview.Box
+
+	// Need to use context while updating pages those read data from a database.
+	// Context should be shared among all mount and updates. Current TUI library
+	// doesn't use contexts at all, so I do that feature by myself.
+	//nolint:containedctx
+	ctx    context.Context
+	onStop func()
+
+	app *tview.Application
+	db  *bbolt.DB
+
+	pageHistory []Primitive
+	mountedPage Primitive
+
+	pageToMount Primitive
+
+	pageStub tview.Primitive
+
+	infoBar    *tview.TextView
+	searchBar  *InputFieldWithHistory
+	loadingBar *LoadingBar
+	helpBar    *tview.TextView
+
+	helpPage *HelpPage
+
+	searchErrorBar *tview.TextView
+
+	isSearching    bool
+	isLoading      atomic.Bool
+	isShowingError bool
+	isShowingHelp  bool
+
+	loadBufferSize int
+
+	rootParser common.Parser
+
+	loadingIndicatorLag time.Duration
+
+	cancelLoading func()
+
+	filters          map[string]func(string) (any, error)
+	compositeFilters map[string]func(string) (map[string]any, error)
+	filterHints      map[string]string
+}
+
+func NewUI(
+	ctx context.Context,
+	app *tview.Application,
+	db *bbolt.DB,
+	rootParser common.Parser,
+	cfg *Config,
+) *UI {
+	spew.Config.DisableMethods = true
+
+	if cfg == nil {
+		cfg = &DefaultConfig
+	}
+
+	ui := &UI{
+		Box: tview.NewBox(),
+
+		app:        app,
+		db:         db,
+		rootParser: rootParser,
+
+		filters:          make(map[string]func(string) (any, error)),
+		compositeFilters: make(map[string]func(string) (map[string]any, error)),
+		filterHints:      make(map[string]string),
+
+		loadBufferSize:      cfg.LoadBufferSize,
+		loadingIndicatorLag: cfg.LoadingIndicatorLag,
+	}
+
+	ui.ctx, ui.onStop = context.WithCancel(ctx)
+
+	backgroundColor := ui.GetBackgroundColor()
+	textColor := tview.Styles.PrimaryTextColor
+
+	inverseBackgroundColor := textColor
+	inverseTextColor := backgroundColor
+
+	alertTextColor := tcell.ColorRed
+
+	ui.pageStub = tview.NewBox()
+
+	ui.infoBar = tview.NewTextView()
+	ui.infoBar.SetBackgroundColor(inverseBackgroundColor)
+	ui.infoBar.SetTextColor(inverseTextColor)
+	ui.infoBar.SetText(
+		fmt.Sprintf(" %s (press h for help, q to quit) ", db.Path()),
+	)
+
+	ui.searchBar = NewInputFieldWithHistory(cfg.SearchHistorySize)
+	ui.searchBar.SetFieldBackgroundColor(backgroundColor)
+	ui.searchBar.SetFieldTextColor(textColor)
+	ui.searchBar.SetLabelColor(textColor)
+	ui.searchBar.Focus(nil)
+	ui.searchBar.SetLabel("/")
+
+	ui.searchErrorBar = tview.NewTextView()
+	ui.searchErrorBar.SetBackgroundColor(backgroundColor)
+	ui.searchErrorBar.SetTextColor(alertTextColor)
+
+	ui.helpBar = tview.NewTextView()
+	ui.helpBar.SetBackgroundColor(inverseBackgroundColor)
+	ui.helpBar.SetTextColor(inverseTextColor)
+	ui.helpBar.SetText(" Press Enter for next page or Escape to exit help ")
+
+	ui.loadingBar = NewLoadingBar(ui.triggerDraw)
+
+	ui.pageToMount = NewBucketsView(ui, NewFilter(nil))
+
+	return ui
+}
+
+func (ui *UI) checkFilterExists(typ string) bool {
+	if _, ok := ui.filters[typ]; ok {
+		return true
+	}
+	if _, ok := ui.compositeFilters[typ]; ok {
+		return true
+	}
+	return false
+}
+
+func (ui *UI) AddFilter(
+	typ string,
+	parser func(string) (any, error),
+	helpHint string,
+) error {
+	if ui.checkFilterExists(typ) {
+		return fmt.Errorf("filter %s already exists", typ)
+	}
+	ui.filters[typ] = parser
+	ui.filterHints[typ] = helpHint
+	return nil
+}
+
+func (ui *UI) AddCompositeFilter(
+	typ string,
+	parser func(string) (map[string]any, error),
+	helpHint string,
+) error {
+	if ui.checkFilterExists(typ) {
+		return fmt.Errorf("filter %s already exists", typ)
+	}
+	ui.compositeFilters[typ] = parser
+	ui.filterHints[typ] = helpHint
+	return nil
+}
+
+func (ui *UI) stopOnError(err error) {
+	if err != nil {
+		ui.onStop()
+		ui.app.QueueEvent(tcell.NewEventError(err))
+	}
+}
+
+func (ui *UI) stop() {
+	ui.onStop()
+	ui.app.Stop()
+}
+
+func (ui *UI) movePrevPage() {
+	if len(ui.pageHistory) != 0 {
+		ui.mountedPage.Unmount()
+		ui.mountedPage = ui.pageHistory[len(ui.pageHistory)-1]
+		ui.pageHistory = ui.pageHistory[:len(ui.pageHistory)-1]
+		ui.triggerDraw()
+	}
+}
+
+func (ui *UI) moveNextPage(page Primitive) {
+	ui.pageToMount = page
+	ui.triggerDraw()
+}
+
+func (ui *UI) triggerDraw() {
+	go ui.app.QueueUpdateDraw(func() {})
+}
+
+func (ui *UI) Draw(screen tcell.Screen) {
+	if ui.isLoading.Load() {
+		ui.draw(screen)
+		return
+	}
+
+	ui.isLoading.Store(true)
+
+	ctx, cancel := context.WithCancel(ui.ctx)
+
+	ready := make(chan struct{})
+	go func() {
+		ui.load(ctx)
+
+		cancel()
+		close(ready)
+		ui.isLoading.Store(false)
+	}()
+
+	select {
+	case <-ready:
+	case <-time.After(ui.loadingIndicatorLag):
+		ui.loadingBar.Start(ui.ctx)
+		ui.cancelLoading = cancel
+
+		go func() {
+			<-ready
+			ui.loadingBar.Stop()
+			ui.triggerDraw()
+		}()
+	}
+
+	ui.draw(screen)
+}
+
+func (ui *UI) load(ctx context.Context) {
+	if ui.mountedPage == nil && ui.pageToMount == nil {
+		ui.stop()
+		return
+	}
+
+	if ui.pageToMount != nil {
+		ui.mountAndUpdate(ctx)
+	} else {
+		ui.update(ctx)
+	}
+}
+
+func (ui *UI) draw(screen tcell.Screen) {
+	ui.DrawForSubclass(screen, ui)
+	x, y, width, height := ui.GetInnerRect()
+
+	var (
+		pageToDraw tview.Primitive
+		barToDraw  tview.Primitive
+	)
+
+	switch {
+	case ui.isShowingHelp:
+		if ui.helpPage == nil {
+			var filters []string
+			for f := range ui.filters {
+				filters = append(filters, f)
+			}
+			for f := range ui.compositeFilters {
+				filters = append(filters, f)
+			}
+			ui.helpPage = NewHelpPage(filters, ui.filterHints)
+		}
+		pageToDraw = ui.helpPage
+	case ui.mountedPage != nil:
+		pageToDraw = ui.mountedPage
+	default:
+		pageToDraw = ui.pageStub
+	}
+
+	pageToDraw.SetRect(x, y, width, height-1)
+	pageToDraw.Draw(screen)
+
+	// Search bar uses cursor and we need to hide it when another bar is drawn.
+	screen.HideCursor()
+
+	switch {
+	case ui.isLoading.Load():
+		barToDraw = ui.loadingBar
+	case ui.isSearching:
+		barToDraw = ui.searchBar
+	case ui.isShowingError:
+		barToDraw = ui.searchErrorBar
+	case ui.isShowingHelp:
+		barToDraw = ui.helpBar
+	default:
+		barToDraw = ui.infoBar
+	}
+
+	barToDraw.SetRect(x, y+height-1, width, 1)
+	barToDraw.Draw(screen)
+}
+
+func (ui *UI) mountAndUpdate(ctx context.Context) {
+	defer func() {
+		// Operation succeeded or was canceled, either way reset page to mount.
+		ui.pageToMount = nil
+	}()
+
+	// Mount should use app global context.
+	//nolint:contextcheck
+	err := ui.pageToMount.Mount(ui.ctx)
+	if err != nil {
+		ui.stopOnError(err)
+		return
+	}
+
+	x, y, width, height := ui.GetInnerRect()
+	ui.pageToMount.SetRect(x, y, width, height-1)
+
+	s := loadOp(ctx, ui.pageToMount.Update)
+	if s.err != nil {
+		ui.pageToMount.Unmount()
+		ui.stopOnError(s.err)
+		return
+	}
+	// Update was canceled.
+	if !s.done {
+		ui.pageToMount.Unmount()
+		return
+	}
+
+	if ui.mountedPage != nil {
+		ui.pageHistory = append(ui.pageHistory, ui.mountedPage)
+	}
+	ui.mountedPage = ui.pageToMount
+}
+
+func (ui *UI) update(ctx context.Context) {
+	x, y, width, height := ui.GetInnerRect()
+	ui.mountedPage.SetRect(x, y, width, height-1)
+
+	s := loadOp(ctx, ui.mountedPage.Update)
+	if s.err != nil {
+		ui.stopOnError(s.err)
+		return
+	}
+}
+
+type status struct {
+	done bool
+	err  error
+}
+
+func loadOp(ctx context.Context, op func(ctx context.Context) error) status {
+	errCh := make(chan error)
+	go func() {
+		errCh <- op(ctx)
+	}()
+
+	select {
+	case <-ctx.Done():
+		return status{done: false, err: nil}
+	case err := <-errCh:
+		return status{done: true, err: err}
+	}
+}
+
+func (ui *UI) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+	return ui.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
+		switch {
+		case ui.isLoading.Load():
+			ui.handleInputOnLoading(event)
+		case ui.isShowingHelp:
+			ui.handleInputOnShowingHelp(event)
+		case ui.isShowingError:
+			ui.handleInputOnShowingError()
+		case ui.isSearching:
+			ui.handleInputOnSearching(event)
+		default:
+			ui.handleInput(event)
+		}
+	})
+}
+
+func (ui *UI) handleInput(event *tcell.EventKey) {
+	m, k, r := event.Modifiers(), event.Key(), event.Rune()
+
+	switch {
+	case k == tcell.KeyEsc:
+		ui.movePrevPage()
+	case m == 0 && k == tcell.KeyRune && r == 'h':
+		ui.isShowingHelp = true
+	case m == 0 && k == tcell.KeyRune && r == '/':
+		ui.isSearching = true
+	case m == 0 && k == tcell.KeyRune && r == 'q':
+		ui.stop()
+	default:
+		if ui.mountedPage != nil {
+			ui.mountedPage.InputHandler()(event, func(tview.Primitive) {})
+		}
+	}
+}
+
+func (ui *UI) handleInputOnLoading(event *tcell.EventKey) {
+	switch k, r := event.Key(), event.Rune(); {
+	case k == tcell.KeyEsc:
+		ui.cancelLoading()
+	case k == tcell.KeyRune && r == 'q':
+		ui.stop()
+	}
+}
+
+func (ui *UI) handleInputOnShowingError() {
+	ui.isShowingError = false
+	ui.isSearching = true
+}
+
+func (ui *UI) handleInputOnShowingHelp(event *tcell.EventKey) {
+	k, r := event.Key(), event.Rune()
+
+	switch {
+	case k == tcell.KeyEsc:
+		ui.isShowingHelp = false
+	case k == tcell.KeyRune && r == 'q':
+		ui.stop()
+	default:
+		ui.helpPage.InputHandler()(event, func(tview.Primitive) {})
+	}
+}
+
+func (ui *UI) handleInputOnSearching(event *tcell.EventKey) {
+	m, k := event.Modifiers(), event.Key()
+
+	switch {
+	case k == tcell.KeyEnter:
+		prompt := ui.searchBar.GetText()
+
+		res, err := ui.processPrompt(prompt)
+		if err != nil {
+			ui.isShowingError = true
+			ui.isSearching = false
+			ui.searchErrorBar.SetText(err.Error() + " (press any key to continue)")
+			return
+		}
+
+		switch ui.mountedPage.(type) {
+		case *BucketsView:
+			ui.moveNextPage(NewBucketsView(ui, res))
+		case *RecordsView:
+			bucket := ui.mountedPage.(*RecordsView).bucket
+			ui.moveNextPage(NewRecordsView(ui, bucket, res))
+		}
+
+		if ui.searchBar.GetText() != "" {
+			ui.searchBar.AddToHistory(ui.searchBar.GetText())
+		}
+
+		ui.searchBar.SetText("")
+		ui.isSearching = false
+	case k == tcell.KeyEsc:
+		ui.isSearching = false
+	case (k == tcell.KeyBackspace2 || m&tcell.ModCtrl != 0 && k == tcell.KeyETB) && len(ui.searchBar.GetText()) == 0:
+		ui.isSearching = false
+	default:
+		ui.searchBar.InputHandler()(event, func(tview.Primitive) {})
+	}
+
+	ui.Box.MouseHandler()
+}
+
+func (ui *UI) WithPrompt(prompt string) error {
+	filter, err := ui.processPrompt(prompt)
+	if err != nil {
+		return err
+	}
+
+	ui.pageToMount = NewBucketsView(ui, filter)
+
+	if prompt != "" {
+		ui.searchBar.AddToHistory(prompt)
+	}
+
+	return nil
+}
+
+func (ui *UI) processPrompt(prompt string) (filter *Filter, err error) {
+	if prompt == "" {
+		return NewFilter(nil), nil
+	}
+
+	filterMap := make(map[string]any)
+
+	for _, filterString := range strings.Split(prompt, "+") {
+		parts := strings.Split(filterString, ":")
+		if len(parts) != 2 {
+			return nil, errors.New("expected 'tag:value [+ tag:value]...'")
+		}
+
+		filterTag := strings.TrimSpace(parts[0])
+		filterValueString := strings.TrimSpace(parts[1])
+
+		if _, exists := filterMap[filterTag]; exists {
+			return nil, fmt.Errorf("duplicate filter tag '%s'", filterTag)
+		}
+
+		parser, ok := ui.filters[filterTag]
+		if ok {
+			filterValue, err := parser(filterValueString)
+			if err != nil {
+				return nil, fmt.Errorf("can't parse '%s' filter value: %w", filterTag, err)
+			}
+
+			filterMap[filterTag] = filterValue
+			continue
+		}
+
+		compositeParser, ok := ui.compositeFilters[filterTag]
+		if ok {
+			compositeFilterValue, err := compositeParser(filterValueString)
+			if err != nil {
+				return nil, fmt.Errorf(
+					"can't parse '%s' filter value '%s': %w",
+					filterTag, filterValueString, err,
+				)
+			}
+
+			for tag, value := range compositeFilterValue {
+				if _, exists := filterMap[tag]; exists {
+					return nil, fmt.Errorf(
+						"found duplicate filter tag '%s' while processing composite filter with tag '%s'",
+						tag, filterTag,
+					)
+				}
+
+				filterMap[tag] = value
+			}
+			continue
+		}
+
+		return nil, fmt.Errorf("unknown filter tag '%s'", filterTag)
+	}
+
+	return NewFilter(filterMap), nil
+}

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

@@ -0,0 +1,97 @@
+package tui
+
+import (
+	"errors"
+	"strings"
+
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/mr-tron/base58"
+)
+
+func CIDParser(s string) (any, error) {
+	data, err := base58.Decode(s)
+	if err != nil {
+		return nil, err
+	}
+	var id cid.ID
+	if err = id.Decode(data); err != nil {
+		return nil, err
+	}
+	return id, nil
+}
+
+func OIDParser(s string) (any, error) {
+	data, err := base58.Decode(s)
+	if err != nil {
+		return nil, err
+	}
+	var id oid.ID
+	if err = id.Decode(data); err != nil {
+		return nil, err
+	}
+	return id, nil
+}
+
+func AddressParser(s string) (map[string]any, error) {
+	m := make(map[string]any)
+
+	parts := strings.Split(s, "/")
+	if len(parts) != 2 {
+		return nil, errors.New("expected <cid>/<oid>")
+	}
+	cnr, err := CIDParser(parts[0])
+	if err != nil {
+		return nil, err
+	}
+	obj, err := OIDParser(parts[1])
+	if err != nil {
+		return nil, err
+	}
+
+	m["cid"] = cnr
+	m["oid"] = obj
+
+	return m, nil
+}
+
+func keyParser(s string) (any, error) {
+	if s == "" {
+		return nil, errors.New("empty attribute key")
+	}
+	return s, nil
+}
+
+func valueParser(s string) (any, error) {
+	if s == "" {
+		return nil, errors.New("empty attribute value")
+	}
+	return s, nil
+}
+
+func AttributeParser(s string) (map[string]any, error) {
+	m := make(map[string]any)
+
+	parts := strings.Split(s, "/")
+	if len(parts) != 1 && len(parts) != 2 {
+		return nil, errors.New("expected <key> or <key>/<value>")
+	}
+
+	key, err := keyParser(parts[0])
+	if err != nil {
+		return nil, err
+	}
+	m["key"] = key
+
+	if len(parts) == 1 {
+		return m, nil
+	}
+
+	value, err := valueParser(parts[1])
+	if err != nil {
+		return nil, err
+	}
+	m["value"] = value
+
+	return m, nil
+}

cmd/frostfs-lens/internal/writecache/root.go

@@ -17,5 +17,5 @@ var Root = &cobra.Command{
 }
 
 func init() {
-	Root.AddCommand(listCMD, inspectCMD)
+	Root.AddCommand(listCMD, inspectCMD, tuiCMD)
 }

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

@@ -0,0 +1,79 @@
+package writecache
+
+import (
+	"context"
+	"fmt"
+
+	common "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal"
+	schema "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/writecache"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/tui"
+	"github.com/rivo/tview"
+	"github.com/spf13/cobra"
+	"go.etcd.io/bbolt"
+)
+
+var tuiCMD = &cobra.Command{
+	Use:   "explore",
+	Short: "Write cache exploration with a terminal UI",
+	Long: `Launch a terminal UI to explore write cache and search for data.
+
+Available search filters:
+- cid  CID
+- oid  OID
+- addr CID/OID
+`,
+	Run: tuiFunc,
+}
+
+var initialPrompt string
+
+func init() {
+	common.AddComponentPathFlag(tuiCMD, &vPath)
+
+	tuiCMD.Flags().StringVar(
+		&initialPrompt,
+		"filter",
+		"",
+		"Filter prompt to start with, format 'tag:value [+ tag:value]...'",
+	)
+}
+
+func tuiFunc(cmd *cobra.Command, _ []string) {
+	common.ExitOnErr(cmd, runTUI(cmd))
+}
+
+func runTUI(cmd *cobra.Command) error {
+	db, err := openDB(false)
+	if err != nil {
+		return fmt.Errorf("couldn't open database: %w", err)
+	}
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(cmd.Context())
+	defer cancel()
+
+	app := tview.NewApplication()
+	ui := tui.NewUI(ctx, app, db, schema.WritecacheParser, nil)
+
+	_ = ui.AddFilter("cid", tui.CIDParser, "CID")
+	_ = ui.AddFilter("oid", tui.OIDParser, "OID")
+	_ = ui.AddCompositeFilter("addr", tui.AddressParser, "CID/OID")
+
+	err = ui.WithPrompt(initialPrompt)
+	if err != nil {
+		return fmt.Errorf("invalid filter prompt: %w", err)
+	}
+
+	app.SetRoot(ui, true).SetFocus(ui)
+	return app.Run()
+}
+
+func openDB(writable bool) (*bbolt.DB, error) {
+	db, err := bbolt.Open(vPath, 0o600, &bbolt.Options{
+		ReadOnly: !writable,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return db, nil
+}