Data Domain：重复的 MFR 策略导致文件复制错误

大量文件复制错误：

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.

目标 Data Domain 上的 ddfs.info 显示以下错误： 

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

源 Data Domain 上的 ddfs.info 显示以下错误：

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.

RPC 超时错误不是由于网络问题造成的。

如果克隆/复制策略恰好同时复制另一个克隆或复制策略 的相同文件，则目标上的 DDOS 会将后续/重复作业视为重试。因此，它会终止原始作业并放弃/关闭文件的句柄。
这会导致日志中显示文件复制错误和 RPC 错误。