Data Domain: Duplicate MFR policies cause filecopy errors

Summary: Duplicate MFR policies cause filecopy errors

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Symptoms

Large number of filecopy errors:

Jan 21 06:48:53 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 06:53:39 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:02:42 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 5056.
Jan 21 07:18:45 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:20:30 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:23:50 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:26:00 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:50:21 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:50:26 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.
Jan 21 07:58:27 mitv5a6b95 ddfs[780]: ERROR: MSG-NFS-00005: Failed to do a filecopy, err = 2.

ddfs.info on the Destination Data Domain shows the following errors: 

01/29 05:38:49.086 (tid 0x2aaaab40cf10): filecopy_terminate_prev_duplicate_ctx: force terminating existing duplicate filecopy ctx 307: /data/col1/nsrsrv2/SV2_DD95_CLONE_1/active/e62b1224-00000006-afc82761-54
c82761-eb620000-00000000
01/29 05:38:49.086 (tid 0x2aaaab2888b0): filecopy ctx 307: filecopy server_stop
01/29 05:38:49.086 (tid 0x2aaaab2888b0): repl ctx 307:0: lrepl_server_stop_internal
01/29 05:38:49.086 (tid 0x2aaaab2888b0): sfs_abandon("INVALID HANDLE:dcd946, 1030087, 5171402a, 0, OPAQUE NODE, 34c76e90"), modified
The ddfs.info on the Source Data Domain shows the following errors:
01/29 05:38:49.113 (tid 0x2ab63e8d5280): repl ctx 307:0: lrepl_send_segs_async_rpc: rpc error 3 (RPC: Unable to send)
01/29 05:38:49.181 (tid 0x2ab63e8d5280): filecopy failed for <file: task idx 2243204, /data/col1/nsrsrv2/SV2_DD15_DATA_1/59/93/e62b1224-00000006-afc82761-54c82761-eb620000-00000000, destination: mitv5a6b95.m
i.edeka.net>, errno=5029, errstr=failed to communicate with destination, error code 3
01/29 05:38:49.181 (tid 0x2ab63e8d5280): nfc_worker - Failed to do a filecopy, err = 5029. Waiting 20 seconds for retry.
The RPC timeout errors are not due to network issues.

Cause

If there are Cloning/Duplication policies which happen to replicate the same files simultaneously of another Cloning or Duplication policy, the DDOS on the Destination considers the subsequent/duplicate job as a retry. Hence it kills the original job and abandon/close the handle for the file.
This causes the filecopy errors and the RPC errors seen in the log.

Resolution

Make sure there is no duplicate Cloning/Duplication policy and that each policy would not try to replicate the same files simultaneously of another Cloning/Duplication policy.

Affected Products

Data Domain
Article Properties
Article Number: 000044524
Article Type: Solution
Last Modified: 15 May 2025
Version:  3
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