NVP vProxy：虚拟机映像还原失败，并显示“[5040] calling system（）， returns nonzero”

Summary: NetWorker VMware Protection （NVP） 虚拟机 （VM） 映像恢复失败，并在恢复会话日志中记录以下错误：“[5040] calling system（）， returns nonzero.”在恢复期间读取其中一个虚拟机存储集文件时，Data Domain ddfs.info 日志报告“无序读取”。

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Symptoms

  • 在 NVP 虚拟机 （VM） 映像还原期间，恢复过程失败。在恢复会话日志中观察到以下错误：
YYYY-MM-DDTHH:MM:SSZ WARN:   [39] Warning occurred while recovering 'Hard disk #': Warning occured while releasing reader resources: Error closing file 'NW_SERVER/POOL/61/42/LONG_SSID/vm-MOREF-disk-key-#######-flat.vmdk' on DataDomain 'DD_HOSTNAME': [5040] calling system(), returns nonzero
可以在 NetWorker 服务器上找到保存的恢复会话：
Linux：/nsr/logs/recover
Windows：C：\Program Files\EMC NetWorker\nsr\logs\recover

恢复会话日志也可以在恢复期间使用的 vProxy 上找到：
/opt/emc/vproxy/runtime/logs/recycle/vrecoverd/DATE
  • vProxy /opt/emc/vproxy/runtime/logs/vrecoverd/vrecoverd-boost.log 显示：
YYYY-MM-DDTHH:MM:SSZ WARN:   [13386] [140581123307264] ddcl_nfs_readext_remote_async_cb()6965: err: [5040-nfs readext async rpc error (nfs: Unknown error)]
...
YYYY-MM-DDTHH:MM:SSZ ERROR:  [13386] [140581123307264] ddp_read() failed Offset 3386365706240, BytesToRead 1048576, BytesRead 0 Err: 5040-A previous operation on this file has failed with error code: 5040 and no further APIs can be processed until the file is closed
  • 在恢复期间读取存储集文件时，Data Domain ddfs.info 日志报告以下内容：
MM/DD HH:MM:SS [7f945922baa0] FM fm_dm1_read:725 - Initializing MSR for file /data/col1/NW_SERVER/POOL/61/42/LONG-SSID/vm-MOREF-disk-key-#######-flat.vmdk handle 6f7228:0:6f722e:0:7935c526:62581ecf:0 at offset 1326682472448 size 262144
..
MM/DD HH:MM:SS [c7ccab0] FM fm_msr_teardown:664 - Tearing down MSR context 0x7f869944c6b0 for file handle 6f7228:0:6f722e:0:7935c526:62581ecf:0 due to out of order read

Cause

已确定已启用 DD OS 参数“OST_DO_READAHEAD”并导致此问题。 
SE@ddve01## se sysparam show OST_DO_READAHEAD
Name               Description                                          Current   Default   Override
----------------   --------------------------------------------------   -------   -------   --------
OST_DO_READAHEAD   Determine whether or not to use read ahead caching   TRUE      TRUE      none
----------------   --------------------------------------------------   -------   -------   --------

Resolution

禁用此功能需要在 Data Domain 上具有 se 模式访问权限;不建议在没有 Data Domain 支持的情况下访问 SE 模式。

联系 Data Domain 支持，以确认是否已启用OST_DO_READAHEAD并将其禁用。

在禁用OST_DO_READAHEAD的情况下执行虚拟机还原。

Affected Products

Data Domain, NetWorker

Products

NetWorker Family, NetWorker Series
Article Properties
Article Number: 000225869
Article Type: Solution
Last Modified: 14 May 2025
Version:  4
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