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基线完成前、SnapMirror关系会报告"SnapMirched"状态

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适用场景

  • ONTAP 9
  • SnapMirror

问题描述

症状

  • SnapMirror关系会在所有源卷数据和快照的初始基线复制传输完成之前报告"SnapMirrored"镜像状态。
  • 例如、在初始化已使用5 TB的源卷时、此关系会在仅移动27 GB后报告"SnapMirrored"镜像状态、如SnapMirror show命令中所示:


CLUSTERB::> snapmirror show
                                                   Progress
Source            Destination   Mirror     Relationship    Total          Last
Path        Type   Path       State      Status       Progress   Healthy   Updated
-----------     ----    ------------   -------     --------------   ---------  -------   --------
svmprod:volprod   XDP    svmdr:voldr   Snapmirrored  Transferring    27GB     false    07/08 11:01:52

  • 此外、位于SnapMirror目标控制器上的/etc/log/jt_audition中的SnapMirror审核日志会报告一个已完成的初始化操作、并且此操作的字段小于预期的Byts_已 传输字段。

Mon Jul 8 08:31:34 EDT 2019 Initialize[Jul 8 08:31:34]:01234567-0123-0123-0123-01234567890a Operation-Uuid=01234567-0123-0123-0123-01234567890a Group=none Operation-Cookie=0 action=Start source=svmprod:volprod destination=svmdr:voldr

Mon Jul 8 08:35:57 EDT 2019 Initialize[Jul 8 08:31:34]:01234567-0123-0123-0123-01234567890a Operation-Uuid=01234567-0123-0123-0123-01234567890a Group=none Operation-Cookie=0 action=End source=svmprod:volprod destination=svmdr:voldr status=Success bytes_transferred=26602694388 network_compression_ratio=1.0:1 transfer_desc=Logical Transfer with Storage Efficiency - Optimized Directory Mode Note=Scheduled update operation is queued.

  • 之后会立即执行ScheduledUpdate操作、即使关系未定义计划也是如此。ScheduledUpdate操作会报告要从源传输的其余Snapshot。

Mon Jul 8 08:35:57 EDT 2019 ScheduledUpdate[Jul 8 08:31:34]:01234567-0123-0123-0123-
01234567890a Operation-Uuid=01234567-0123-0123-0123-01234567890a Group=none OperationCookie=0 action=Start source=svmprod:volprod destination=svmdr:voldr

Mon Jul 8 08:35:57 EDT 2019 ScheduledUpdate[Jul 8 08:31:34]:01234567-0123-0123-0123-
01234567890a Operation-Uuid=01234567-0123-0123-0123-01234567890a Group=none OperationCookie=0 action=Transfer_snapshots (1 of 1 log entries): daily.2019-07-07_0010,weekly.2019-07-07_0015,daily.2019-07-08_0010,hourly.2019-07-08_0305,hourly.2019-07-08_0405,hourly.2019-07-08_0505,hourly.2019-07-08_0605,hourly.2019-07-08_0705,hourly.2019-07-
08_0805,snapmirror.01234567-0123-0123-0123-01234567890a_0123456789.2019-07-08_083134

  • 如果SnapMirror type-XDP关系使用的是镜像所有快照SnapMirror策略、则会发生这种情况。您可以通过运行命令snapmirror show -fields type,policy 来检查SnapMirror和SnapMirror策略的类型 。这是ONTAP 9 3和9.4中的默认关系类型和SnapMirror策略。
  • 在成功复制源卷中的第一个快照后、使用MirrorAllSnap照SnapMirror策略的SnapMirror type-XDP关系会报告"SnapMirrored"镜像状态。其余快照将使用SnapMirror更新操作进行传输、该操作内置在针对这些SnapMirror关系的初始化操作中。在此更新操作成功结束之前、不应将源卷的基线视为已完成。

 

 

 

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