Data Domain：重複的 MFR 原則導致檔案複製錯誤

大量檔案複製錯誤：

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.

目的地 Data Domain 上的 ddfs.info 會顯示下列錯誤： 

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

來源 Data Domain 上的 ddfs.info 顯示下列錯誤：

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 逾時錯誤並非因為網路問題所導致。

如果複製/複製原則碰巧同時複製另一個複製或複製原則 的相同檔案，目的地上的 DDOS 會將後續/重複工作視為重試。因此，它會終止原始作業並放棄/關閉檔的句柄。
這會導致檔案複製錯誤和在記錄中看到的 RPC 錯誤。