ECS: NFSv3 procedure LINK not supported in request ReadLinkRequest

Summary: The dataheadsvc log streaming error: NFSv3 procedure LINK not supported in request ReadLinkRequest.

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Symptoms

The dataheadsvc log is streaming the following errors:
Command:
# cat /opt/emc/caspian/fabric/agent/services/object/main/log/dataheadsvc.log
Example:

2018-08-16T10:13:35,312 [RpcDispatcherMD-1392] INFO COMMIT3Handler.java (line 132) Retrieved attributes for : 3e53eabbb55102dffba9e462c55656dedaf10f7b9f4389d322173f3ecd295240 Size : 1010564
2018-08-16T10:13:35,314 [RpcDispatcherMD-1284] WARN RpcProgramNfs3.java (line 239) **************** NFSv3 procedure LINK not supported in request ReadLinkRequest : FileHandle:[objectId = 3e53eabbb55102dffba9e462c55656dedaf10f7b9f4389d322173f3ecd295240, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1
2018-08-16T10:13:35,314 [RpcDispatcherMD-1391] WARN RpcProgramNfs3.java (line 239) **************** NFSv3 procedure LINK not supported in request ReadLinkRequest : FileHandle:[objectId = b2fac0d51058bc3138b4da067ed3ca5eb7781e3cd95a9ac535ea3664c7b71f62, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1
2018-08-16T10:13:35,314 [RpcDispatcherMD-1284] ERROR RpcProgramNfs3.java (line 169) Response : Rpc error : Nfsv3 procedure LINK not supported in ReadLinkRequest : FileHandle:[objectId = 3e53eabbb55102dffba9e462c55656dedaf10f7b9f4389d322173f3ecd295240, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1 PROC_UNAVAIL
2018-08-16T10:13:35,314 [RpcDispatcherMD-1391] ERROR RpcProgramNfs3.java (line 169) Response : Rpc error : Nfsv3 procedure LINK not supported in ReadLinkRequest : FileHandle:[objectId = b2fac0d51058bc3138b4da067ed3ca5eb7781e3cd95a9ac535ea3664c7b71f62, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1 PROC_UNAVAIL
2018-08-16T10:13:35,314 [RpcDispatcherMD-1391] ERROR RpcProgramNfs3.java (line 294) Error processing NfsRequest: xid:1441996478 ip:/10.1.1.78 SysSecurity: AuthStatus:AUTH_OK Uid:1001 Gid:1001 Proc:LINK ReadLinkRequest : FileHandle:[objectId = b2fac0d51058bc3138b4da067ed3ca5eb7781e3cd95a9ac535ea3664c7b71f62, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1 NfsResponse: null RpcError: PROC_UNAVAIL
2018-08-16T10:13:35,314 [RpcDispatcherMD-1284] ERROR RpcProgramNfs3.java (line 294) Error processing NfsRequest: xid:1458773694 ip:/10.1.1.78 SysSecurity: AuthStatus:AUTH_OK Uid:1001 Gid:1001 Proc:LINK ReadLinkRequest : FileHandle:[objectId = 3e53eabbb55102dffba9e462c55656dedaf10f7b9f4389d322173f3ecd295240, ownerZoneUUID = ecb84411-2609-4467-b6ea-14d0f851ccc4]Export:1 NfsResponse: null RpcError: PROC_UNAVAIL
2018-08-16T10:13:35,317 [RpcDispatcherMD-1356-0a01821f:165323f0b49:ef:2838a52] WARN FileSystemAccessHelper.java (line 1931) nfsProcessOperation : Object objectId : was not found by method nfsGetSMD
2018-08-16T10:13:35,318 [RpcDispatcherMD-1298-0a01821f:165323f0b49:e6:283489e] WARN FileSystemAccessHelper.java (line 1931) nfsProcessOperation : Object objectId : was not found by method nfsGetSMD

Cause

The Network File System (NFS) procedure used by client operation is LINK which is hard link. This is not supported.

Resolution

NFS supports all NFSv3 procedures EXCEPT for LINK: Create hard link to an object.

Additional Information

Refer to the NFS section of the Technical FAQ.

Affected Products

Elastic Cloud Storage

Products

Elastic Cloud Storage
Article Properties
Article Number: 000042857
Article Type: Solution
Last Modified: 12 Sep 2025
Version:  4
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