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将卷移动到其他聚合后、空间未回收

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ontap-9
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适用场景

  • ONTAP 9
  • 卷移动
  • FabricPool

问题解答

  • 由于此卷是FabricPool卷、因此90%的用户数据会分层到对象存储/冷层。
  • 对象存储中的数据不会占用聚合空间、因此、将FabricPool卷从一个聚合移动到另一个聚合不会回收所有空间、而只会回收性能层/本地层中的空间。
 
示例:
  • 卷已用大小为2.28 TB、其中2.15 TB位于冷层/对象存储中。
  • 因此、只有130 GB位于本地层中或正在聚合中占用。
volume show-Footprint:

Volume : vol_test

    Feature                       Used    Used%
    --------------------------------    ----------------    -----
    Volume Data Footprint               2.28TB     16%
     Footprint in Performance Tier         132GB     6%
     Footprint in StorageAccount         2.15TB     94%
    Flexible Volume Metadata             15.6GB      0%
    Deduplication Metadata              12.7GB      0%
     Deduplication                 12.7GB      0%
    Delayed Frees                   97.1MB      0%
    Total                       2.31TB     16%

    Effective Total Footprint             2.31TB     16%
      

  • 如果执行卷移动、聚合将仅回收130 GB的空间、而不是整个2.28 TB的空间。
  • 原因:2.15 TB位于冷层中、不会占用聚合中的空间。

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