ECS：请求 ReadLinkRequest 中不支持 NFSv3 过程 LINK

dataheadsvc 日志正在流式传输以下错误：
命令：
# cat /opt/emc/caspian/fabric/agent/services/object/main/log/dataheadsvc.log
示例：

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

客户端作使用的网络文件系统 （NFS） 过程是 LINK，即硬链接。这 不受 支持。

NFS 支持除 LINK 以外的所有 NFSv3 过程：创建指向对象的硬链接。

请参阅 Technical FAQ的NFS部分。