[#1064] putsvc: Add EC put

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

go.mod

@@ -85,6 +85,7 @@ require (
 	github.com/ipfs/go-cid v0.4.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/klauspost/reedsolomon v1.12.1 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect

internal/logs/logs.go

@@ -579,4 +579,6 @@ const (
 	EngineShardsEvacuationFailedToMoveTree                                  = "failed to evacuate tree to other node"
 	EngineShardsEvacuationTreeEvacuatedLocal                                = "tree evacuated to local node"
 	EngineShardsEvacuationTreeEvacuatedRemote                               = "tree evacuated to other node"
+	ECFailedToSendToContainerNode                                           = "failed to send EC object to container node"
+	ECFailedToSaveECPart                                                    = "failed to save EC part"
 )

pkg/core/container/ec.go

@@ -0,0 +1,11 @@
+package container
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/policy"
+	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+)
+
+// IsECContainer returns True if container has erasure coding policy.
+func IsECContainer(cnr containerSDK.Container) bool {
+	return policy.IsECPlacement(cnr.PlacementPolicy())
+}

pkg/core/object/ec.go

@@ -0,0 +1,13 @@
+package object
+
+import (
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+)
+
+// IsECSupported returns True if EC supported for object.
+//
+// EC supported only for regular, not linking objects.
+func IsECSupported(obj *objectSDK.Object) bool {
+	return obj.Type() == objectSDK.TypeRegular &&
+		len(obj.Children()) == 0
+}

pkg/core/policy/ec.go

@@ -0,0 +1,20 @@
+package policy
+
+import (
+	netmapSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+)
+
+// IsECPlacement returns True if policy is erasure coding policy.
+func IsECPlacement(policy netmapSDK.PlacementPolicy) bool {
+	return policy.NumberOfReplicas() == 1 && policy.ReplicaDescriptor(0).GetECDataCount() > 0
+}
+
+// ECDataCount returns EC data count for EC placement policy.
+func ECDataCount(policy netmapSDK.PlacementPolicy) int {
+	return int(policy.ReplicaDescriptor(0).GetECDataCount())
+}
+
+// ECParityCount returns EC parity count for EC placement policy.
+func ECParityCount(policy netmapSDK.PlacementPolicy) int {
+	return int(policy.ReplicaDescriptor(0).GetECParityCount())
+}

pkg/services/object/put/ec.go

@@ -0,0 +1,265 @@
+package putsvc
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"errors"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/policy"
+	svcutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
+	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/erasurecode"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
+	"go.uber.org/zap"
+	"golang.org/x/sync/errgroup"
+)
+
+var _ transformer.ObjectWriter = (*ecWriter)(nil)
+
+var errUnsupportedECObject = errors.New("object is not supported for erasure coding")
+
+type ecWriter struct {
+	cfg           *cfg
+	placementOpts []placement.Option
+	container     containerSDK.Container
+	key           *ecdsa.PrivateKey
+	commonPrm     *svcutil.CommonPrm
+	relay         func(context.Context, client.NodeInfo, client.MultiAddressClient) error
+
+	objMeta      object.ContentMeta
+	objMetaValid bool
+}
+
+func (e *ecWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
+	relayed, err := e.relayIfNotContainerNode(ctx)
+	if err != nil {
+		return err
+	}
+	if relayed {
+		return nil
+	}
+
+	if !object.IsECSupported(obj) {
+		// must be resolved by caller
+		return errUnsupportedECObject
+	}
+
+	if !e.objMetaValid {
+		if e.objMeta, err = e.cfg.fmtValidator.ValidateContent(obj); err != nil {
+			return fmt.Errorf("(%T) could not validate payload content: %w", e, err)
+		}
+		e.objMetaValid = true
+	}
+
+	if obj.ECHeader() != nil {
+		return e.writeECPart(ctx, obj)
+	}
+	return e.writeRawObject(ctx, obj)
+}
+
+func (e *ecWriter) relayIfNotContainerNode(ctx context.Context) (bool, error) {
+	if e.relay == nil {
+		return false, nil
+	}
+	currentNodeIsContainerNode, err := e.currentNodeIsContainerNode()
+	if err != nil {
+		return false, err
+	}
+	if currentNodeIsContainerNode {
+		// object can be splitted or saved local
+		return false, nil
+	}
+	if err := e.relayToContainerNode(ctx); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+func (e *ecWriter) currentNodeIsContainerNode() (bool, error) {
+	t, err := placement.NewTraverser(e.placementOpts...)
+	if err != nil {
+		return false, err
+	}
+	for {
+		nodes := t.Next()
+		if len(nodes) == 0 {
+			break
+		}
+		for _, node := range nodes {
+			if e.cfg.netmapKeys.IsLocalKey(node.PublicKey()) {
+				return true, nil
+			}
+		}
+	}
+	return false, nil
+}
+
+func (e *ecWriter) relayToContainerNode(ctx context.Context) error {
+	t, err := placement.NewTraverser(e.placementOpts...)
+	if err != nil {
+		return err
+	}
+	var lastErr error
+	for {
+		nodes := t.Next()
+		if len(nodes) == 0 {
+			break
+		}
+		for _, node := range nodes {
+			var info client.NodeInfo
+			client.NodeInfoFromNetmapElement(&info, node)
+
+			c, err := e.cfg.clientConstructor.Get(info)
+			if err != nil {
+				return fmt.Errorf("could not create SDK client %s: %w", info.AddressGroup(), err)
+			}
+
+			completed := make(chan interface{})
+			if poolErr := e.cfg.remotePool.Submit(func() {
+				defer close(completed)
+				err = e.relay(ctx, info, c)
+			}); poolErr != nil {
+				close(completed)
+				svcutil.LogWorkerPoolError(e.cfg.log, "PUT", poolErr)
+				return poolErr
+			}
+			<-completed
+
+			if err == nil {
+				return nil
+			}
+			e.cfg.log.Logger.Warn(logs.ECFailedToSendToContainerNode, zap.Stringers("address_group", info.AddressGroup()))
+			lastErr = err
+		}
+	}
+	if lastErr == nil {
+		return nil
+	}
+	return errIncompletePut{
+		singleErr: lastErr,
+	}
+}
+
+func (e *ecWriter) writeECPart(ctx context.Context, obj *objectSDK.Object) error {
+	t, err := placement.NewTraverser(e.placementOpts...)
+	if err != nil {
+		return err
+	}
+
+	eg, egCtx := errgroup.WithContext(ctx)
+	for {
+		nodes := t.Next()
+		if len(nodes) == 0 {
+			break
+		}
+
+		eg.Go(func() error {
+			return e.writePart(egCtx, obj, int(obj.ECHeader().Index()), nodes)
+		})
+	}
+	if err := eg.Wait(); err != nil {
+		return errIncompletePut{
+			singleErr: err,
+		}
+	}
+	return nil
+}
+
+func (e *ecWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) error {
+	// now only single EC policy is supported
+	c, err := erasurecode.NewConstructor(policy.ECDataCount(e.container.PlacementPolicy()), policy.ECParityCount(e.container.PlacementPolicy()))
+	if err != nil {
+		return err
+	}
+	parts, err := c.Split(obj, e.key)
+	if err != nil {
+		return err
+	}
+	t, err := placement.NewTraverser(e.placementOpts...)
+	if err != nil {
+		return err
+	}
+
+	eg, egCtx := errgroup.WithContext(ctx)
+	for {
+		nodes := t.Next()
+		if len(nodes) == 0 {
+			break
+		}
+
+		for idx := range parts {
+			idx := idx
+			eg.Go(func() error {
+				return e.writePart(egCtx, parts[idx], idx, nodes)
+			})
+		}
+	}
+	if err := eg.Wait(); err != nil {
+		return errIncompletePut{
+			singleErr: err,
+		}
+	}
+	return nil
+}
+
+func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx int, nodes []placement.Node) error {
+	var err error
+	node := nodes[partIdx%len(nodes)]
+	if e.cfg.netmapKeys.IsLocalKey(node.PublicKey()) {
+		err = e.writePartLocal(ctx, obj)
+	} else {
+		err = e.writePartRemote(ctx, obj, node)
+	}
+	if err == nil {
+		return nil
+	}
+	e.cfg.log.Warn(logs.ECFailedToSaveECPart, zap.Stringer("parent_object", object.AddressOf(obj)), zap.Error(err))
+	return err
+}
+
+func (e *ecWriter) writePartLocal(ctx context.Context, obj *objectSDK.Object) error {
+	var err error
+	localTarget := localTarget{
+		storage: e.cfg.localStore,
+	}
+	completed := make(chan interface{})
+	if poolErr := e.cfg.localPool.Submit(func() {
+		defer close(completed)
+		err = localTarget.WriteObject(ctx, obj, e.objMeta)
+	}); poolErr != nil {
+		close(completed)
+		return poolErr
+	}
+	<-completed
+	return err
+}
+
+func (e *ecWriter) writePartRemote(ctx context.Context, obj *objectSDK.Object, node placement.Node) error {
+	var clientNodeInfo client.NodeInfo
+	client.NodeInfoFromNetmapElement(&clientNodeInfo, node)
+
+	remoteTaget := remoteTarget{
+		privateKey:        e.key,
+		clientConstructor: e.cfg.clientConstructor,
+		commonPrm:         e.commonPrm,
+		nodeInfo:          clientNodeInfo,
+	}
+
+	var err error
+	completed := make(chan interface{})
+	if poolErr := e.cfg.remotePool.Submit(func() {
+		defer close(completed)
+		err = remoteTaget.WriteObject(ctx, obj, e.objMeta)
+	}); poolErr != nil {
+		close(completed)
+		return poolErr
+	}
+	<-completed
+	return err
+}

pkg/services/object/put/single.go

@@ -16,6 +16,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
@@ -25,6 +26,7 @@ import (
 	tracingPkg "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
+	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"git.frostfs.info/TrueCloudLab/tzhash/tz"
 	"go.opentelemetry.io/otel/attribute"
@@ -32,7 +34,10 @@ import (
 	"go.uber.org/zap"
 )
 
-var errInvalidPayloadChecksum = errors.New("incorrect payload checksum")
+var (
+	errInvalidPayloadChecksum = errors.New("incorrect payload checksum")
+	errInvalidECObject        = errors.New("object must be splitted to EC parts")
+)
 
 type putSingleRequestSigner struct {
 	req        *objectAPI.PutSingleRequest
@@ -148,12 +153,20 @@ func (s *Service) validatePutSingleObject(ctx context.Context, obj *objectSDK.Ob
 
 func (s *Service) saveToNodes(ctx context.Context, obj *objectSDK.Object, req *objectAPI.PutSingleRequest, meta object.ContentMeta) error {
 	localOnly := req.GetMetaHeader().GetTTL() <= 1
-	placementOptions, err := s.getPutSinglePlacementOptions(obj, req.GetBody().GetCopiesNumber(), localOnly)
+	placement, err := s.getPutSinglePlacementOptions(obj, req.GetBody().GetCopiesNumber(), localOnly)
 	if err != nil {
 		return err
 	}
 
-	iter := s.cfg.newNodeIterator(placementOptions)
+	if placement.isEC {
+		return s.saveToECReplicas(ctx, placement, obj, req, meta)
+	}
+
+	return s.saveToREPReplicas(ctx, placement, obj, localOnly, req, meta)
+}
+
+func (s *Service) saveToREPReplicas(ctx context.Context, placement putSinglePlacement, obj *objectSDK.Object, localOnly bool, req *objectAPI.PutSingleRequest, meta object.ContentMeta) error {
+	iter := s.cfg.newNodeIterator(placement.placementOptions)
 	iter.extraBroadcastEnabled = needAdditionalBroadcast(obj, localOnly)
 
 	signer := &putSingleRequestSigner{
@@ -167,38 +180,83 @@ func (s *Service) saveToNodes(ctx context.Context, obj *objectSDK.Object, req *o
 	})
 }
 
-func (s *Service) getPutSinglePlacementOptions(obj *objectSDK.Object, copiesNumber []uint32, localOnly bool) ([]placement.Option, error) {
+func (s *Service) saveToECReplicas(ctx context.Context, placement putSinglePlacement, obj *objectSDK.Object, req *objectAPI.PutSingleRequest, meta object.ContentMeta) error {
-	var result []placement.Option
+	if obj.Type() == objectSDK.TypeRegular && obj.ECHeader() == nil {
-	if len(copiesNumber) > 0 {
+		return errInvalidECObject
-		result = append(result, placement.WithCopyNumbers(copiesNumber))
 	}
 
+	commonPrm, err := svcutil.CommonPrmFromV2(req)
+	if err != nil {
+		return err
+	}
+	key, err := s.cfg.keyStorage.GetKey(nil)
+	if err != nil {
+		return err
+	}
+	signer := &putSingleRequestSigner{
+		req:        req,
+		keyStorage: s.keyStorage,
+		signer:     &sync.Once{},
+	}
+
+	w := ecWriter{
+		cfg:           s.cfg,
+		placementOpts: placement.placementOptions,
+		objMeta:       meta,
+		objMetaValid:  true,
+		commonPrm:     commonPrm,
+		container:     placement.container,
+		key:           key,
+		relay: func(ctx context.Context, ni client.NodeInfo, mac client.MultiAddressClient) error {
+			return s.redirectPutSingleRequest(ctx, signer, obj, ni, mac)
+		},
+	}
+	return w.WriteObject(ctx, obj)
+}
+
+type putSinglePlacement struct {
+	placementOptions []placement.Option
+	isEC             bool
+	container        containerSDK.Container
+}
+
+func (s *Service) getPutSinglePlacementOptions(obj *objectSDK.Object, copiesNumber []uint32, localOnly bool) (putSinglePlacement, error) {
+	var result putSinglePlacement
+
 	cnrID, ok := obj.ContainerID()
 	if !ok {
-		return nil, errors.New("missing container ID")
+		return result, errors.New("missing container ID")
 	}
 	cnrInfo, err := s.cnrSrc.Get(cnrID)
 	if err != nil {
-		return nil, fmt.Errorf("could not get container by ID: %w", err)
+		return result, fmt.Errorf("could not get container by ID: %w", err)
 	}
-	result = append(result, placement.ForContainer(cnrInfo.Value))
+	result.container = cnrInfo.Value
+	result.isEC = container.IsECContainer(cnrInfo.Value) && object.IsECSupported(obj)
+	if len(copiesNumber) > 0 && !result.isEC {
+		result.placementOptions = append(result.placementOptions, placement.WithCopyNumbers(copiesNumber))
+	}
+	result.placementOptions = append(result.placementOptions, placement.ForContainer(cnrInfo.Value))
 
 	objID, ok := obj.ID()
 	if !ok {
-		return nil, errors.New("missing object ID")
+		return result, errors.New("missing object ID")
 	}
-	result = append(result, placement.ForObject(objID))
+	if obj.ECHeader() != nil {
+		objID = obj.ECHeader().Parent()
+	}
+	result.placementOptions = append(result.placementOptions, placement.ForObject(objID))
 
 	latestNetmap, err := netmap.GetLatestNetworkMap(s.netMapSrc)
 	if err != nil {
-		return nil, fmt.Errorf("could not get latest network map: %w", err)
+		return result, fmt.Errorf("could not get latest network map: %w", err)
 	}
 	builder := placement.NewNetworkMapBuilder(latestNetmap)
 	if localOnly {
-		result = append(result, placement.SuccessAfter(1))
+		result.placementOptions = append(result.placementOptions, placement.SuccessAfter(1))
 		builder = svcutil.NewLocalPlacement(builder, s.netmapKeys)
 	}
-	result = append(result, placement.UseBuilder(builder))
+	result.placementOptions = append(result.placementOptions, placement.UseBuilder(builder))
 	return result, nil
 }
 

pkg/services/object/put/streamer.go

@@ -7,7 +7,9 @@ import (
 	"fmt"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
 	pkgutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
@@ -19,7 +21,7 @@ import (
 type Streamer struct {
 	*cfg
 
-	sessionKey *ecdsa.PrivateKey
+	privateKey *ecdsa.PrivateKey
 
 	target transformer.ChunkedObjectWriter
 
@@ -76,6 +78,12 @@ func (p *Streamer) initTarget(prm *PutInitPrm) error {
 func (p *Streamer) initUntrustedTarget(prm *PutInitPrm) error {
 	p.relay = prm.relay
 
+	nodeKey, err := p.cfg.keyStorage.GetKey(nil)
+	if err != nil {
+		return err
+	}
+	p.privateKey = nodeKey
+
 	// prepare untrusted-Put object target
 	p.target = &validatingPreparedTarget{
 		nextTarget: newInMemoryObjectBuilder(p.newObjectWriter(prm)),
@@ -102,7 +110,7 @@ func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
 		}
 	}
 
-	sessionKey, err := p.keyStorage.GetKey(sessionInfo)
+	key, err := p.keyStorage.GetKey(sessionInfo)
 	if err != nil {
 		return fmt.Errorf("(%T) could not receive session key: %w", p, err)
 	}
@@ -116,7 +124,7 @@ func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
 
 	if sToken == nil {
 		var ownerSession user.ID
-		user.IDFromKey(&ownerSession, sessionKey.PublicKey)
+		user.IDFromKey(&ownerSession, key.PublicKey)
 
 		if !ownerObj.Equals(ownerSession) {
 			return fmt.Errorf("(%T) session token is missing but object owner id is different from the default key", p)
@@ -127,11 +135,11 @@ func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
 		}
 	}
 
-	p.sessionKey = sessionKey
+	p.privateKey = key
 	p.target = &validatingTarget{
 		fmt: p.fmtValidator,
 		nextTarget: transformer.NewPayloadSizeLimiter(transformer.Params{
-			Key:                    sessionKey,
+			Key:                    key,
 			NextTargetInit:         func() transformer.ObjectWriter { return p.newObjectWriter(prm) },
 			NetworkState:           p.networkState,
 			MaxSize:                p.maxPayloadSz,
@@ -171,7 +179,12 @@ func (p *Streamer) preparePrm(prm *PutInitPrm) error {
 		placement.ForContainer(prm.cnr),
 	)
 
-	if id, ok := prm.hdr.ID(); ok {
+	if ech := prm.hdr.ECHeader(); ech != nil {
+		prm.traverseOpts = append(prm.traverseOpts,
+			// set identifier of the processing object
+			placement.ForObject(ech.Parent()),
+		)
+	} else if id, ok := prm.hdr.ID(); ok {
 		prm.traverseOpts = append(prm.traverseOpts,
 			// set identifier of the processing object
 			placement.ForObject(id),
@@ -196,6 +209,13 @@ func (p *Streamer) preparePrm(prm *PutInitPrm) error {
 }
 
 func (p *Streamer) newObjectWriter(prm *PutInitPrm) transformer.ObjectWriter {
+	if container.IsECContainer(prm.cnr) && object.IsECSupported(prm.hdr) {
+		return p.newECWriter(prm)
+	}
+	return p.newDefaultObjectWriter(prm)
+}
+
+func (p *Streamer) newDefaultObjectWriter(prm *PutInitPrm) transformer.ObjectWriter {
 	var relay func(context.Context, nodeDesc) error
 	if p.relay != nil {
 		relay = func(ctx context.Context, node nodeDesc) error {
@@ -223,7 +243,7 @@ func (p *Streamer) newObjectWriter(prm *PutInitPrm) transformer.ObjectWriter {
 			}
 
 			rt := &remoteTarget{
-				privateKey:        p.sessionKey,
+				privateKey:        p.privateKey,
 				commonPrm:         prm.common,
 				clientConstructor: p.clientConstructor,
 			}
@@ -236,6 +256,20 @@ func (p *Streamer) newObjectWriter(prm *PutInitPrm) transformer.ObjectWriter {
 	}
 }
 
+func (p *Streamer) newECWriter(prm *PutInitPrm) transformer.ObjectWriter {
+	return &objectWriterDispatcher{
+		ecWriter: &ecWriter{
+			cfg:           p.cfg,
+			placementOpts: append(prm.traverseOpts, placement.WithCopyNumbers(nil)), // copies number ignored for EC
+			container:     prm.cnr,
+			key:           p.privateKey,
+			commonPrm:     prm.common,
+			relay:         p.relay,
+		},
+		repWriter: p.newDefaultObjectWriter(prm),
+	}
+}
+
 func (p *Streamer) SendChunk(ctx context.Context, prm *PutChunkPrm) error {
 	if p.target == nil {
 		return errNotInit

pkg/services/object/put/writer.go

@@ -0,0 +1,23 @@
+package putsvc
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
+)
+
+var _ transformer.ObjectWriter = (*objectWriterDispatcher)(nil)
+
+type objectWriterDispatcher struct {
+	ecWriter  transformer.ObjectWriter
+	repWriter transformer.ObjectWriter
+}
+
+func (m *objectWriterDispatcher) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
+	if object.IsECSupported(obj) {
+		return m.ecWriter.WriteObject(ctx, obj)
+	}
+	return m.repWriter.WriteObject(ctx, obj)
+}

pkg/services/object_manager/placement/traverser.go

@@ -137,7 +137,7 @@ func defaultCopiesVector(policy netmap.PlacementPolicy) []int {
 	copyVector := make([]int, 0, replNum)
 
 	for i := 0; i < replNum; i++ {
-		copyVector = append(copyVector, int(policy.ReplicaDescriptor(i).NumberOfObjects()))
+		copyVector = append(copyVector, int(policy.ReplicaDescriptor(i).NumberOfObjects()+policy.ReplicaDescriptor(i).GetECDataCount()+policy.ReplicaDescriptor(i).GetECParityCount()))
 	}
 
 	return copyVector