NetWorker：在启用 DD Retention Lock 时，nsrclone 无法克隆以前无法通过脚本自动克隆的存储集

Summary: 在启用 DD Retention Lock 时，nsrclone 无法克隆以前无法使用脚本自动克隆的存储集。

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Symptoms

  • 一些以前无法使用脚本或自动克隆的存储集。
  • 如果没有包含 mminfo 的卷名称，则可能会显示“ghost”存储集（请参见下文）。
  • 检查目标文件系统是否显示存储集文件，但不显示“备注”文件。
  • saveset 的 scanner 命令失败（请参见下文）。
  • 克隆存储集的进一步尝试失败，并显示错误：Err: 5004-nfs lookup failed (nfs: 无此类文件或目录）
mminfo CLI 输出显示具有“E”标记的故障克隆存储集： 
# mminfo -q ssid=928093938 -r ssid,cloneid,ssretent,clretent,ssflags,clflags,copies
ssid         clone id retent  clretent ssflags clflg copies
928093938   1532073714 08/24/2018 08/20/2018 vrF         2
928093938   1532252170 08/24/2018 08/24/2018 vrF   E     <--- This is the incomplete clone.

但是，添加“volume”交换机后，仅报告 1 行： 
# mminfo -q ssid=928093938 -r ssid,cloneid,ssretent,clretent,ssflags,clflags,copies,volume
ssid         clone id retent  clretent ssflags clflg copies volume
928093938   1532073714 08/24/2018 08/20/2018 vrF         2 source-volume-name
                                                         ^ ---2 copies yet only 1 shows in the output.

扫描仪 CLI 输出： 
8909:scanner: using 'DD-name_destination-device-path' as the device name
8936:scanner: scanning Data Domain disk destination-volume-name on DD-name_destination-device-path
8939:scanner: Data Domain disk destination-volume-name already exists in the media index
107505:scanner: Opening the file '/nw-server-name/destination-device-path/08/04/notes/705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd' failed [5004] ([57525] [140043448723232] Wed Aug  1 13:18:50 2018
        ddp_open_file() failed for File: //nw-server-name/destination-device-path/08/04/notes/705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd, Err: 5004-nfs lookup failed (nfs: No such file or directory)
).
107505:scanner: Opening the file '/nw-server-name/destination-device-path/08/04/notes/705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd' failed [5004] ([57525] [140043448723232] Wed Aug  1 13:18:50 2018
        ddp_open_file() failed for File: //nw-server-name/destination-device-path/08/04/notes/705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd, Err: 5004-nfs lookup failed (nfs: No such file or directory)
).
8761:scanner: done with Data Domain disk destination-volume-name
nsrclone CLI 输出：  
80470:nsrclone: Following volumes are needed for cloning
80471:nsrclone:         source-volume-name (DD)
100303:nsrclone: Cloning savesets from storage node 'nw-server-name'
142165:nsrclone: Number of clone threads per client is set to 256. Max number of savesets per thread is set to 0. Max client threads is set to 0.
104860:nsrclone: Concurrent proxy clone started for service type DD.
Cloning save sets from the volume source-volume-name
Total client count in a volume source-volume-name is 1
77426:nsrclone: Cloning save sets from the volume source-volume-name
104861:nsrclone: Total client count in a volume source-volume-name is 1
104864:nsrclone: Number of clone threads per client set to 1. Max number of savesets per thread is set to 0. Max client threads is set to 30 for volume source-volume-name
174908:nsrclone: Saving the backup data in the pool 'destination-pool'.
175019:nsrclone: Received the media management binding information on the host 'nw-server-name'.
174910:nsrclone: Connected to the nsrmmd process on the host 'nw-server-name'.
32379:nsrclone: Cloning save set index:705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd (ssid/cloneid 928093938/1532073714)
75360:nsrclone: Cloning of size 1 KB is in progress...
72985:nsrclone: Source volume 'source-volume-name' ready for cloning
75675:nsrclone: Failed to initiate the save nsrmmd to create a clone instance.
Direct File Save failed for /nw-server-name/destination-device-path/active/df304e8e-00000006-375196f2-5b5196f2-23ce16ac-34ae8c2d on volume destination-volume-name
75267:nsrclone: Failed to initiate mmd session for ssid 928093938.
75712:nsrclone: Cloning failed for save set : index:705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd (ssid 928093938)
77276:nsrclone: Total size cloned so far: 0 KB.

141764:nsrclone: Unable to perform clone of client saveset. Error: proxy_clone_rs failed.

104863:nsrclone: Concurrent proxy clone completed for sevice type DD.
67790:nsrclone: Total size cloned: 0 KB.
77275:nsrclone: DD cloning failed
Proxy clone failed to clone all or few savesetsSome of the clones failed
Some of the clones failed

Cause

DD 已启用 Retention Lock。这可防止删除不完整的原始存储集，并防止下一次克隆尝试在目标路径中过度写入数据。

Resolution

解决办法：

从上面的扫描仪尝试中，查找目标上存储集的路径： 
//nw-server-name/destination-device-path/08/04/notes/705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd

我们需要存储集本身的路径，该路径将高于“注释”的一个级别，例如： 
//nw-server-name/destination-device-path/08/04/

然后添加始终启动 /data/col1/mtree-name 的 DD mtree 路径。DD CLI 上的“mtree list”显示已配置的 Mtree。通常，Mtree 名称与主机 NetWorker 服务器名称匹配。然后将长存储集名称添加到末尾。
在此示例中，完整路径变为： 
/data/col1/nw-server-name/destination-device-path/08/04//705d0dc6-00000004-5982f3fd-599ed855-190c442c-4c9896fd

我们必须使用此路径在目标 Data Domain 系统上禁用保留锁定：
  • 在目标 DD CLI 上，运行： mtree retention-lock revert [path] （从上面的路径）这 要求 sysadmin 密码。
  • 再次克隆存储集 — 这现在应该可以正常工作，而不会出错，因为它现在可以写入目标路径。
  • 克隆的存储集的 mminfo 查询现在应正常工作。
  • 对任何其他受影响的存储集重复此操作。

Affected Products

NetWorker

Products

NetWorker
Article Properties
Article Number: 000052916
Article Type: Solution
Last Modified: 27 Sep 2023
Version:  3
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