[#1121] node: Change mode of shard components

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

pkg/local_object_storage/blobstor/blobovniczatree/concurrency_test.go

@@ -8,6 +8,7 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
 	"github.com/stretchr/testify/require"
 )
@@ -23,7 +24,7 @@ func TestBlobovniczaTree_Concurrency(t *testing.T) {
 		WithBlobovniczaShallowWidth(10),
 		WithBlobovniczaShallowDepth(1),
 		WithRootPath(t.TempDir()))
-	require.NoError(t, st.Open(false))
+	require.NoError(t, st.Open(mode.ComponentReadWrite))
 	require.NoError(t, st.Init())
 	defer func() {
 		require.NoError(t, st.Close())

pkg/local_object_storage/blobstor/blobovniczatree/control.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"go.uber.org/zap"
 	"golang.org/x/sync/errgroup"
@@ -16,9 +17,9 @@ import (
 var errFailedToChangeExtensionReadOnly = errors.New("failed to change blobovnicza extension: read only mode")
 
 // Open opens blobovnicza tree.
-func (b *Blobovniczas) Open(readOnly bool) error {
+func (b *Blobovniczas) Open(mode mode.ComponentMode) error {
-	b.readOnly = readOnly
+	b.readOnly = mode.ReadOnly()
-	b.metrics.SetMode(readOnly)
+	b.metrics.SetMode(mode)
 	b.metrics.SetRebuildStatus(rebuildStatusNotStarted)
 	b.openManagers()
 	return nil

pkg/local_object_storage/blobstor/blobovniczatree/control_test.go

@@ -11,6 +11,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 )
 
@@ -54,7 +55,7 @@ func openAndCloseTestTree(t *testing.T, depth, width uint64, path string) {
 		WithBlobovniczaShallowWidth(width),
 		WithRootPath(path),
 	)
-	require.NoError(t, blz.Open(false))
+	require.NoError(t, blz.Open(mode.ComponentReadWrite))
 	require.NoError(t, blz.Init())
 	require.NoError(t, blz.Close())
 }
@@ -85,7 +86,7 @@ func TestObjectsAvailableAfterDepthAndWidthEdit(t *testing.T) {
 		WithRootPath(rootDir),
 	)
 
-	require.NoError(t, blz.Open(false))
+	require.NoError(t, blz.Open(mode.ComponentReadWrite))
 	require.NoError(t, blz.Init())
 
 	obj35 := blobstortest.NewObject(10 * 1024)
@@ -123,7 +124,7 @@ func TestObjectsAvailableAfterDepthAndWidthEdit(t *testing.T) {
 		WithRootPath(rootDir),
 	)
 
-	require.NoError(t, blz.Open(false))
+	require.NoError(t, blz.Open(mode.ComponentReadWrite))
 	require.NoError(t, blz.Init())
 
 	gRes, err = blz.Get(context.Background(), common.GetPrm{
@@ -160,7 +161,7 @@ func TestObjectsAvailableAfterDepthAndWidthEdit(t *testing.T) {
 		WithBlobovniczaShallowWidth(5),
 		WithRootPath(rootDir),
 	)
-	require.NoError(t, blz.Open(false))
+	require.NoError(t, blz.Open(mode.ComponentReadWrite))
 	require.NoError(t, blz.Init())
 
 	gRes, err = blz.Get(context.Background(), common.GetPrm{

pkg/local_object_storage/blobstor/blobovniczatree/exists_test.go

@@ -10,6 +10,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
 	"github.com/stretchr/testify/require"
 )
@@ -24,7 +25,7 @@ func TestExistsInvalidStorageID(t *testing.T) {
 		WithBlobovniczaShallowDepth(2),
 		WithRootPath(dir),
 		WithBlobovniczaSize(1<<20))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 	defer func() { require.NoError(t, b.Close()) }()
 

pkg/local_object_storage/blobstor/blobovniczatree/iterate_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"testing"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
 	"github.com/stretchr/testify/require"
 )
@@ -18,7 +19,7 @@ func TestIterateSortedLeavesAndDBPathsAreSame(t *testing.T) {
 		WithRootPath(t.TempDir()),
 	)
 	blz.createDBInAdvance = true
-	require.NoError(t, blz.Open(false))
+	require.NoError(t, blz.Open(mode.ComponentReadWrite))
 	require.NoError(t, blz.Init())
 	defer func() {
 		require.NoError(t, blz.Close())

pkg/local_object_storage/blobstor/blobovniczatree/metrics.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 )
 
 const (
@@ -18,7 +19,7 @@ type Metrics interface {
 
 	SetParentID(parentID string)
 
-	SetMode(readOnly bool)
+	SetMode(mode.ComponentMode)
 	Close()
 
 	SetRebuildStatus(status string)
@@ -37,7 +38,7 @@ type Metrics interface {
 type noopMetrics struct{}
 
 func (m *noopMetrics) SetParentID(string)                      {}
-func (m *noopMetrics) SetMode(bool)                            {}
+func (m *noopMetrics) SetMode(mode.ComponentMode)              {}
 func (m *noopMetrics) Close()                                  {}
 func (m *noopMetrics) SetRebuildStatus(string)                 {}
 func (m *noopMetrics) SetRebuildPercent(uint32)                {}

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_failover_test.go

@@ -11,6 +11,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
@@ -138,7 +139,7 @@ func testRebuildFailoverValidate(t *testing.T, dir string, obj *objectSDK.Object
 		WithBlobovniczaSize(100*1024*1024),
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 
 	var dPrm common.DeletePrm

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go

@@ -8,6 +8,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"github.com/stretchr/testify/require"
@@ -53,7 +54,7 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000),
 		WithMoveBatchSize(3))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 
 	obj := blobstortest.NewObject(64 * 1024) // 64KB object
@@ -81,7 +82,7 @@ func TestBlobovniczaTreeRebuildLargeObject(t *testing.T) {
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000),
 		WithMoveBatchSize(3))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 
 	metaStub := &storageIDUpdateStub{
@@ -120,7 +121,7 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000),
 		WithMoveBatchSize(3))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 
 	eg, egCtx := errgroup.WithContext(context.Background())
@@ -161,7 +162,7 @@ func testBlobovniczaTreeRebuildHelper(t *testing.T, sourceDepth, sourceWidth, ta
 		WithWaitBeforeDropDB(0),
 		WithOpenedCacheSize(1000),
 		WithMoveBatchSize(50))
-	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Open(mode.ComponentReadWrite))
 	require.NoError(t, b.Init())
 
 	for addr, storageID := range storageIDs {

pkg/local_object_storage/blobstor/common/storage.go

@@ -4,12 +4,13 @@ import (
 	"context"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 )
 
 // Storage represents key-value object storage.
 // It is used as a building block for a blobstor of a shard.
 type Storage interface {
-	Open(readOnly bool) error
+	Open(mode mode.ComponentMode) error
 	Init() error
 	Close() error
 

pkg/local_object_storage/blobstor/control.go

@@ -27,15 +27,14 @@ func (b *BlobStor) Open(ctx context.Context, mode mode.Mode) error {
 	return nil
 }
 
-func (b *BlobStor) openBlobStor(ctx context.Context, mode mode.Mode) error {
+func (b *BlobStor) openBlobStor(ctx context.Context, mod mode.Mode) error {
-	readOnly := mode.ReadOnly()
 	for i := range b.storage {
 		select {
 		case <-ctx.Done():
 			return ctx.Err()
 		default:
 		}
-		err := b.storage[i].Storage.Open(readOnly)
+		err := b.storage[i].Storage.Open(mode.ConvertToComponentMode(mod))
 		if err != nil {
 			return err
 		}

pkg/local_object_storage/blobstor/fstree/control.go

@@ -1,13 +1,14 @@
 package fstree
 
 import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 )
 
 // Open implements common.Storage.
-func (t *FSTree) Open(ro bool) error {
+func (t *FSTree) Open(mode mode.ComponentMode) error {
-	t.readOnly = ro
+	t.readOnly = mode.ReadOnly()
-	t.metrics.SetMode(ro)
+	t.metrics.SetMode(mode)
 	return nil
 }
 

pkg/local_object_storage/blobstor/fstree/fstree_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
@@ -43,7 +44,7 @@ func TestObjectCounter(t *testing.T) {
 		WithDepth(2),
 		WithDirNameLen(2),
 		WithFileCounter(counter))
-	require.NoError(t, fst.Open(false))
+	require.NoError(t, fst.Open(mode.ComponentReadWrite))
 	require.NoError(t, fst.Init())
 
 	counterValue := counter.Value()

pkg/local_object_storage/blobstor/fstree/metrics.go

@@ -1,11 +1,15 @@
 package fstree
 
-import "time"
+import (
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
+)
 
 type Metrics interface {
 	SetParentID(parentID string)
 
-	SetMode(readOnly bool)
+	SetMode(mode mode.ComponentMode)
 	Close()
 
 	Iterate(d time.Duration, success bool)
@@ -20,7 +24,7 @@ type Metrics interface {
 type noopMetrics struct{}
 
 func (m *noopMetrics) SetParentID(string)                {}
-func (m *noopMetrics) SetMode(bool)                      {}
+func (m *noopMetrics) SetMode(mode.ComponentMode)        {}
 func (m *noopMetrics) Close()                            {}
 func (m *noopMetrics) Iterate(time.Duration, bool)       {}
 func (m *noopMetrics) Delete(time.Duration, bool)        {}

pkg/local_object_storage/blobstor/internal/blobstortest/control.go

@@ -7,6 +7,7 @@ import (
 
 	objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 )
 
@@ -14,13 +15,13 @@ import (
 // cons must return a storage which is NOT opened.
 func TestControl(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 
 	objects := prepare(t, 10, s, min, max)
 	require.NoError(t, s.Close())
 
-	require.NoError(t, s.Open(true))
+	require.NoError(t, s.Open(mode.ComponentReadOnly))
 	for i := range objects {
 		var prm common.GetPrm
 		prm.Address = objects[i].addr

pkg/local_object_storage/blobstor/internal/blobstortest/delete.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
 	"github.com/stretchr/testify/require"
@@ -12,7 +13,7 @@ import (
 
 func TestDelete(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 	defer func() { require.NoError(t, s.Close()) }()
 

pkg/local_object_storage/blobstor/internal/blobstortest/exists.go

@@ -5,13 +5,14 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
 	"github.com/stretchr/testify/require"
 )
 
 func TestExists(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 	defer func() { require.NoError(t, s.Close()) }()
 

pkg/local_object_storage/blobstor/internal/blobstortest/get.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
 	"github.com/stretchr/testify/require"
@@ -12,7 +13,7 @@ import (
 
 func TestGet(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 	defer func() { require.NoError(t, s.Close()) }()
 

pkg/local_object_storage/blobstor/internal/blobstortest/get_range.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
@@ -14,7 +15,7 @@ import (
 
 func TestGetRange(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 	defer func() { require.NoError(t, s.Close()) }()
 

pkg/local_object_storage/blobstor/internal/blobstortest/iterate.go

@@ -6,12 +6,13 @@ import (
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 )
 
 func TestIterate(t *testing.T, cons Constructor, min, max uint64) {
 	s := cons(t)
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 	defer func() { require.NoError(t, s.Close()) }()
 

pkg/local_object_storage/blobstor/memstore/control.go

@@ -1,9 +1,12 @@
 package memstore
 
-import "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
+)
 
-func (s *memstoreImpl) Open(readOnly bool) error {
+func (s *memstoreImpl) Open(mod mode.ComponentMode) error {
-	s.readOnly = readOnly
+	s.readOnly = mod.ReadOnly()
 	return nil
 }
 

pkg/local_object_storage/blobstor/memstore/memstore_test.go

@@ -7,6 +7,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"github.com/stretchr/testify/require"
@@ -18,7 +19,7 @@ func TestSimpleLifecycle(t *testing.T) {
 		WithLogger(test.NewLogger(t)),
 	)
 	defer func() { require.NoError(t, s.Close()) }()
-	require.NoError(t, s.Open(false))
+	require.NoError(t, s.Open(mode.ComponentReadWrite))
 	require.NoError(t, s.Init())
 
 	obj := blobstortest.NewObject(1024)

pkg/local_object_storage/blobstor/perf_test.go

@@ -10,6 +10,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/memstore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/sync/errgroup"
 )
@@ -22,7 +23,7 @@ type storage struct {
 func (s storage) open(b *testing.B) common.Storage {
 	st := s.create(b.TempDir())
 
-	require.NoError(b, st.Open(false))
+	require.NoError(b, st.Open(mode.ComponentReadWrite))
 	require.NoError(b, st.Init())
 
 	return st

pkg/local_object_storage/blobstor/teststore/option.go

@@ -3,12 +3,13 @@ package teststore
 import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 )
 
 type cfg struct {
 	st        common.Storage
 	overrides struct {
-		Open  func(readOnly bool) error
+		Open  func(mode mode.ComponentMode) error
 		Init  func() error
 		Close func() error
 
@@ -35,9 +36,9 @@ func WithSubstorage(st common.Storage) Option {
 	}
 }
 
-func WithOpen(f func(bool) error) Option { return func(c *cfg) { c.overrides.Open = f } }
+func WithOpen(f func(mode.ComponentMode) error) Option { return func(c *cfg) { c.overrides.Open = f } }
-func WithInit(f func() error) Option     { return func(c *cfg) { c.overrides.Init = f } }
+func WithInit(f func() error) Option                   { return func(c *cfg) { c.overrides.Init = f } }
-func WithClose(f func() error) Option    { return func(c *cfg) { c.overrides.Close = f } }
+func WithClose(f func() error) Option                  { return func(c *cfg) { c.overrides.Close = f } }
 
 func WithType(f func() string) Option { return func(c *cfg) { c.overrides.Type = f } }
 func WithPath(f func() string) Option { return func(c *cfg) { c.overrides.Path = f } }

pkg/local_object_storage/blobstor/teststore/teststore.go

@@ -20,6 +20,7 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 )
 
 // TestStore is a common.Storage implementation for testing/mocking purposes.
@@ -50,16 +51,16 @@ func (s *TestStore) SetOption(opt Option) {
 	opt(s.cfg)
 }
 
-func (s *TestStore) Open(readOnly bool) error {
+func (s *TestStore) Open(mod mode.ComponentMode) error {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 	switch {
 	case s.overrides.Open != nil:
-		return s.overrides.Open(readOnly)
+		return s.overrides.Open(mod)
 	case s.st != nil:
-		return s.st.Open(readOnly)
+		return s.st.Open(mod)
 	default:
-		panic(fmt.Sprintf("unexpected storage call: Open(%v)", readOnly))
+		panic(fmt.Sprintf("unexpected storage call: Open(%v)", mod.String()))
 	}
 }
 

pkg/local_object_storage/engine/control_test.go

@@ -74,7 +74,7 @@ func TestInitializationFailure(t *testing.T) {
 			openFileMetabase: os.OpenFile,
 			openFilePilorama: os.OpenFile,
 		})
-		largeFileStorage.SetOption(teststore.WithOpen(func(ro bool) error {
+		largeFileStorage.SetOption(teststore.WithOpen(func(primitiveMode mode.ComponentMode) error {
 			return teststore.ErrDiskExploded
 		}))
 		beforeReload := func() {

pkg/local_object_storage/engine/writecache.go

@@ -171,8 +171,8 @@ func (m *writeCacheMetrics) SetEstimateSize(db, fstree uint64) {
 	m.metrics.SetEstimateSize(m.shardID, m.path, writecache.StorageTypeFSTree.String(), fstree)
 }
 
-func (m *writeCacheMetrics) SetMode(mode mode.Mode) {
+func (m *writeCacheMetrics) SetMode(mod mode.ComponentMode) {
-	m.metrics.SetMode(m.shardID, mode.String())
+	m.metrics.SetMode(m.shardID, mod.String())
 }
 
 func (m *writeCacheMetrics) SetActualCounters(db, fstree uint64) {

pkg/local_object_storage/metabase/control.go

@@ -38,16 +38,16 @@ var (
 )
 
 // Open boltDB instance for metabase.
-func (db *DB) Open(_ context.Context, mode mode.Mode) error {
+func (db *DB) Open(_ context.Context, m mode.Mode) error {
 	db.modeMtx.Lock()
 	defer db.modeMtx.Unlock()
-	db.mode = mode
+	db.mode = m
-	db.metrics.SetMode(mode)
+	db.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 
-	if mode.NoMetabase() {
+	if m.NoMetabase() {
 		return nil
 	}
-	return db.openDB(mode)
+	return db.openDB(m)
 }
 
 func (db *DB) openDB(mode mode.Mode) error {
@@ -239,15 +239,15 @@ func (db *DB) Reload(opts ...Option) (bool, error) {
 			return false, err
 		}
 
-		db.mode = mode.Degraded
+		db.mode = mode.Disabled
-		db.metrics.SetMode(mode.Degraded)
+		db.metrics.SetMode(mode.ComponentDisabled)
 		db.info.Path = c.info.Path
 		if err := db.openBolt(); err != nil {
 			return false, metaerr.Wrap(fmt.Errorf("%w: %v", ErrDegradedMode, err))
 		}
 
 		db.mode = mode.ReadWrite
-		db.metrics.SetMode(mode.ReadWrite)
+		db.metrics.SetMode(mode.ComponentReadWrite)
 		return true, nil
 	}
 

pkg/local_object_storage/metabase/metrics.go

@@ -9,7 +9,7 @@ import (
 type Metrics interface {
 	SetParentID(parentID string)
 
-	SetMode(m mode.Mode)
+	SetMode(m mode.ComponentMode)
 	Close()
 
 	AddMethodDuration(method string, d time.Duration, success bool)
@@ -18,6 +18,6 @@ type Metrics interface {
 type noopMetrics struct{}
 
 func (m *noopMetrics) SetParentID(string)                            {}
-func (m *noopMetrics) SetMode(mode.Mode)                             {}
+func (m *noopMetrics) SetMode(mode.ComponentMode)                    {}
 func (m *noopMetrics) Close()                                        {}
 func (m *noopMetrics) AddMethodDuration(string, time.Duration, bool) {}

pkg/local_object_storage/metabase/mode.go

@@ -35,6 +35,6 @@ func (db *DB) SetMode(m mode.Mode) error {
 	}
 
 	db.mode = m
-	db.metrics.SetMode(m)
+	db.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 	return nil
 }

pkg/local_object_storage/metabase/shard_id.go

@@ -69,7 +69,7 @@ func (db *DB) SetShardID(id []byte, mode metamode.Mode) error {
 
 	err := db.writeShardID(id)
 	if err == nil {
-		db.metrics.SetMode(mode)
+		db.metrics.SetMode(metamode.ConvertToComponentModeDegraded(mode))
 	}
 
 	if cErr := db.close(); cErr != nil {

pkg/local_object_storage/metrics/blobovnicza.go

@@ -5,6 +5,7 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	metrics_impl "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/metrics"
 )
 
@@ -34,8 +35,8 @@ func (m *blobovniczaTreeMetrics) SetParentID(parentID string) {
 	m.shardID = parentID
 }
 
-func (m *blobovniczaTreeMetrics) SetMode(readOnly bool) {
+func (m *blobovniczaTreeMetrics) SetMode(mod mode.ComponentMode) {
-	m.m.SetBlobobvnizcaTreeMode(m.shardID, m.path, readOnly)
+	m.m.SetBlobobvnizcaTreeMode(m.shardID, m.path, mod)
 }
 
 func (m *blobovniczaTreeMetrics) Close() {

pkg/local_object_storage/metrics/fstree.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	metrics_impl "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/metrics"
 )
 
@@ -25,8 +26,8 @@ func (m *fstreeMetrics) SetParentID(parentID string) {
 	m.shardID = parentID
 }
 
-func (m *fstreeMetrics) SetMode(readOnly bool) {
+func (m *fstreeMetrics) SetMode(mod mode.ComponentMode) {
-	m.m.SetMode(m.shardID, m.path, readOnly)
+	m.m.SetMode(m.shardID, m.path, mod)
 }
 
 func (m *fstreeMetrics) Close() {

pkg/local_object_storage/metrics/metabase.go

@@ -26,7 +26,7 @@ func (m *metabaseMetrics) SetParentID(parentID string) {
 	m.shardID = parentID
 }
 
-func (m *metabaseMetrics) SetMode(mode mode.Mode) {
+func (m *metabaseMetrics) SetMode(mode mode.ComponentMode) {
 	m.m.SetMode(m.shardID, m.path, mode.String())
 }
 

pkg/local_object_storage/metrics/pilorama.go

@@ -24,8 +24,8 @@ func (m *piloramaMetrics) SetParentID(id string) {
 	m.shardID = id
 }
 
-func (m *piloramaMetrics) SetMode(mode mode.Mode) {
+func (m *piloramaMetrics) SetMode(mod mode.ComponentMode) {
-	m.m.SetMode(m.shardID, mode)
+	m.m.SetMode(m.shardID, mod)
 }
 
 func (m *piloramaMetrics) Close() {

pkg/local_object_storage/pilorama/boltdb.go

@@ -109,7 +109,7 @@ func (t *boltForest) SetMode(m mode.Mode) error {
 	}
 
 	t.mode = m
-	t.metrics.SetMode(m)
+	t.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 	return nil
 }
 
@@ -123,8 +123,8 @@ func (t *boltForest) Open(_ context.Context, mode mode.Mode) error {
 	return t.openBolt(mode)
 }
 
-func (t *boltForest) openBolt(mode mode.Mode) error {
+func (t *boltForest) openBolt(m mode.Mode) error {
-	readOnly := mode.ReadOnly()
+	readOnly := m.ReadOnly()
 	err := util.MkdirAllX(filepath.Dir(t.path), t.perm)
 	if err != nil {
 		return metaerr.Wrap(fmt.Errorf("can't create dir %s for the pilorama: %w", t.path, err))
@@ -143,7 +143,7 @@ func (t *boltForest) openBolt(mode mode.Mode) error {
 
 	t.db.MaxBatchSize = t.maxBatchSize
 	t.db.MaxBatchDelay = t.maxBatchDelay
-	t.metrics.SetMode(mode)
+	t.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 	return nil
 }
 

pkg/local_object_storage/pilorama/metrics.go

@@ -9,7 +9,7 @@ import (
 type Metrics interface {
 	SetParentID(id string)
 
-	SetMode(m mode.Mode)
+	SetMode(m mode.ComponentMode)
 	Close()
 
 	AddMethodDuration(method string, d time.Duration, success bool)
@@ -18,6 +18,6 @@ type Metrics interface {
 type noopMetrics struct{}
 
 func (m *noopMetrics) SetParentID(string)                            {}
-func (m *noopMetrics) SetMode(mode.Mode)                             {}
+func (m *noopMetrics) SetMode(mode.ComponentMode)                    {}
 func (m *noopMetrics) Close()                                        {}
 func (m *noopMetrics) AddMethodDuration(string, time.Duration, bool) {}

pkg/local_object_storage/shard/control.go

@@ -37,7 +37,7 @@ func (s *Shard) handleMetabaseFailure(stage string, err error) error {
 
 	err = s.SetMode(mode.DegradedReadOnly)
 	if err != nil {
-		return fmt.Errorf("could not switch to mode %s", mode.DegradedReadOnly)
+		return fmt.Errorf("could not switch to mode %s", mode.Mode(mode.DegradedReadOnly))
 	}
 	return nil
 }

pkg/local_object_storage/shard/mode/mode.go

@@ -29,6 +29,22 @@ const (
 	DegradedReadOnly Mode = Degraded | ReadOnly
 )
 
+// ComponentMode represents basic operation modes for shared components, including READ, READ_WRITE, and DISABLED.
+type ComponentMode uint32
+
+const (
+	// ComponentReadWrite is a Mode value for component that is available
+	// for read and write operations. Default component mode.
+	ComponentReadWrite ComponentMode = 0
+
+	// ComponentReadOnly is a Mode value for component that does not
+	// accept write operation but is readable.
+	ComponentReadOnly ComponentMode = 0b001
+
+	// ComponentDisabled mode is a mode where a component is disabled.
+	ComponentDisabled ComponentMode = math.MaxUint32
+)
+
 func (m Mode) String() string {
 	switch m {
 	default:
@@ -46,6 +62,19 @@ func (m Mode) String() string {
 	}
 }
 
+func (m ComponentMode) String() string {
+	switch m {
+	default:
+		return "UNDEFINED"
+	case ComponentReadWrite:
+		return "READ_WRITE"
+	case ComponentReadOnly:
+		return "READ_ONLY"
+	case ComponentDisabled:
+		return "CLOSED"
+	}
+}
+
 // NoMetabase returns true iff m is operating without the metabase.
 func (m Mode) NoMetabase() bool {
 	return m&Degraded != 0
@@ -56,6 +85,39 @@ func (m Mode) ReadOnly() bool {
 	return m&ReadOnly != 0
 }
 
+// ReadOnly returns true iff m prohibits modifying operations with shard.
+func (m ComponentMode) ReadOnly() bool {
+	return m&ComponentReadOnly != 0
+}
+
 func (m Mode) Disabled() bool {
 	return m == Disabled
 }
+
+func (m ComponentMode) Disabled() bool {
+	return m == ComponentDisabled
+}
+
+// ConvertToComponentModeDegraded converts a ShardMode to a corresponding ComponentMode.
+// Disables the component if the node is in degraded mode. Used in Metabase, Writecache, Pilorama.
+func ConvertToComponentModeDegraded(m Mode) ComponentMode {
+	if m.NoMetabase() || m.Disabled() {
+		return ComponentDisabled
+	}
+	if m.ReadOnly() {
+		return ComponentReadOnly
+	}
+	return ComponentReadWrite
+}
+
+// ConvertToComponentMode converts a ShardMode to a corresponding ComponentMode.
+// Ignores the degraded mode of the node. Used in Blobstore.
+func ConvertToComponentMode(m Mode) ComponentMode {
+	if m.Disabled() {
+		return ComponentDisabled
+	}
+	if m.ReadOnly() {
+		return ComponentReadOnly
+	}
+	return ComponentReadWrite
+}

pkg/local_object_storage/writecache/cachebbolt.go

@@ -95,14 +95,14 @@ func (c *cache) DumpInfo() Info {
 }
 
 // Open opens and initializes database. Reads object counters from the ObjectCounters instance.
-func (c *cache) Open(_ context.Context, mode mode.Mode) error {
+func (c *cache) Open(_ context.Context, mod mode.Mode) error {
 	c.modeMtx.Lock()
 	defer c.modeMtx.Unlock()
-	c.mode = mode
+	c.mode = mod
-	if mode.NoMetabase() {
+	if mod.NoMetabase() {
 		return nil
 	}
-	err := c.openStore(mode.ReadOnly())
+	err := c.openStore(mode.ConvertToComponentModeDegraded(mod))
 	if err != nil {
 		return metaerr.Wrap(err)
 	}
@@ -112,7 +112,7 @@ func (c *cache) Open(_ context.Context, mode mode.Mode) error {
 
 // Init runs necessary services.
 func (c *cache) Init() error {
-	c.metrics.SetMode(c.mode)
+	c.metrics.SetMode(mode.ConvertToComponentModeDegraded(c.mode))
 	ctx, cancel := context.WithCancel(context.Background())
 	c.cancel = cancel
 	c.runFlushLoop(ctx)

pkg/local_object_storage/writecache/flush.go

@@ -294,7 +294,7 @@ func (c *cache) Flush(ctx context.Context, ignoreErrors, seal bool) error {
 		if err := c.setMode(ctx, m, ignoreErrors); err != nil {
 			return err
 		}
-		c.metrics.SetMode(m)
+		c.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 	}
 	return nil
 }

pkg/local_object_storage/writecache/metrics.go

@@ -27,7 +27,7 @@ type Metrics interface {
 	Evict(st StorageType)
 
 	SetEstimateSize(db, fstree uint64)
-	SetMode(m mode.Mode)
+	SetMode(m mode.ComponentMode)
 	SetActualCounters(db, fstree uint64)
 	SetPath(path string)
 	Close()
@@ -49,7 +49,7 @@ func (metricsStub) Put(time.Duration, bool, StorageType) {}
 
 func (metricsStub) SetEstimateSize(uint64, uint64) {}
 
-func (metricsStub) SetMode(mode.Mode) {}
+func (metricsStub) SetMode(mode.ComponentMode) {}
 
 func (metricsStub) SetActualCounters(uint64, uint64) {}
 

pkg/local_object_storage/writecache/mode.go

@@ -27,7 +27,7 @@ func (c *cache) SetMode(m mode.Mode) error {
 
 	err := c.setMode(ctx, m, true)
 	if err == nil {
-		c.metrics.SetMode(m)
+		c.metrics.SetMode(mode.ConvertToComponentModeDegraded(m))
 	}
 	return err
 }
@@ -63,7 +63,7 @@ func (c *cache) setMode(ctx context.Context, m mode.Mode, ignoreErrors bool) err
 		return nil
 	}
 
-	if err = c.openStore(m.ReadOnly()); err != nil {
+	if err = c.openStore(mode.ConvertToComponentModeDegraded(m)); err != nil {
 		return err
 	}
 

pkg/local_object_storage/writecache/seal.go

@@ -22,7 +22,7 @@ func (c *cache) Seal(ctx context.Context, ignoreErrors bool) error {
 	// flush will be done by setMode
 	err := c.setMode(ctx, mode.DegradedReadOnly, ignoreErrors)
 	if err == nil {
-		c.metrics.SetMode(mode.DegradedReadOnly)
+		c.metrics.SetMode(mode.ComponentDisabled)
 	}
 	return err
 }

pkg/local_object_storage/writecache/storage.go

@@ -10,6 +10,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	storagelog "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/log"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -25,13 +26,13 @@ type store struct {
 
 const dbName = "small.bolt"
 
-func (c *cache) openStore(readOnly bool) error {
+func (c *cache) openStore(mod mode.ComponentMode) error {
 	err := util.MkdirAllX(c.path, os.ModePerm)
 	if err != nil {
 		return err
 	}
 
-	c.db, err = OpenDB(c.path, readOnly, c.openFile)
+	c.db, err = OpenDB(c.path, mod.ReadOnly(), c.openFile)
 	if err != nil {
 		return fmt.Errorf("could not open database: %w", err)
 	}
@@ -39,7 +40,7 @@ func (c *cache) openStore(readOnly bool) error {
 	c.db.MaxBatchSize = c.maxBatchSize
 	c.db.MaxBatchDelay = c.maxBatchDelay
 
-	if !readOnly {
+	if !mod.ReadOnly() {
 		err = c.db.Update(func(tx *bbolt.Tx) error {
 			_, err := tx.CreateBucketIfNotExists(defaultBucket)
 			return err
@@ -57,7 +58,7 @@ func (c *cache) openStore(readOnly bool) error {
 		fstree.WithNoSync(c.noSync),
 		fstree.WithFileCounter(&c.objCounters),
 	)
-	if err := c.fsTree.Open(readOnly); err != nil {
+	if err := c.fsTree.Open(mod); err != nil {
 		return fmt.Errorf("could not open FSTree: %w", err)
 	}
 	if err := c.fsTree.Init(); err != nil {

pkg/metrics/blobovnicza.go

@@ -4,12 +4,13 @@ import (
 	"strconv"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 type BlobobvnizcaMetrics interface {
-	SetBlobobvnizcaTreeMode(shardID, path string, readOnly bool)
+	SetBlobobvnizcaTreeMode(shardID, path string, mode mode.ComponentMode)
 	CloseBlobobvnizcaTree(shardID, path string)
 	BlobobvnizcaTreeMethodDuration(shardID, path string, method string, d time.Duration, success bool, withStorageID NullBool)
 	AddBlobobvnizcaTreePut(shardID, path string, size int)
@@ -98,8 +99,8 @@ func newBlobovnicza() *blobovnicza {
 	}
 }
 
-func (b *blobovnicza) SetBlobobvnizcaTreeMode(shardID, path string, readOnly bool) {
+func (b *blobovnicza) SetBlobobvnizcaTreeMode(shardID, path string, mod mode.ComponentMode) {
-	b.treeMode.SetMode(shardID, path, modeFromBool(readOnly))
+	b.treeMode.SetMode(shardID, path, mod.String())
 }
 
 func (b *blobovnicza) CloseBlobobvnizcaTree(shardID, path string) {

pkg/metrics/fstree.go

@@ -4,12 +4,13 @@ import (
 	"strconv"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 type FSTreeMetrics interface {
-	SetMode(shardID, path string, readOnly bool)
+	SetMode(shardID, path string, mode mode.ComponentMode)
 	Close(shardID, path string)
 
 	MethodDuration(shardID, path string, method string, d time.Duration, success bool)
@@ -48,8 +49,8 @@ func newFSTreeMetrics() *fstreeMetrics {
 	}
 }
 
-func (m *fstreeMetrics) SetMode(shardID, path string, readOnly bool) {
+func (m *fstreeMetrics) SetMode(shardID, path string, mod mode.ComponentMode) {
-	m.mode.SetMode(shardID, path, modeFromBool(readOnly))
+	m.mode.SetMode(shardID, path, mod.String())
 }
 
 func (m *fstreeMetrics) Close(shardID, path string) {

pkg/metrics/pilorama.go

@@ -10,7 +10,7 @@ import (
 )
 
 type PiloramaMetrics interface {
-	SetMode(shardID string, m mode.Mode)
+	SetMode(shardID string, m mode.ComponentMode)
 	Close(shardID string)
 
 	AddMethodDuration(shardID string, method string, d time.Duration, success bool)
@@ -33,7 +33,7 @@ type piloramaMetrics struct {
 	reqDuration *prometheus.HistogramVec
 }
 
-func (m *piloramaMetrics) SetMode(shardID string, mode mode.Mode) {
+func (m *piloramaMetrics) SetMode(shardID string, mode mode.ComponentMode) {
 	m.mode.SetMode(shardID, mode.String())
 }