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删除操作如何影响快照占用的磁盘空间

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适用场景

ONTAP 9

问题解答

通过比较快照的时间戳、只有稍后创建的快照才会占用与已删除数据大小相应的磁盘空间。
注意： 此处的快照还包括SnapMirror基线快照。
 
示例：

lccls91001::*> set adv -confirmations off; run local snap status vol4

Volume vol4
snapid  status    date       ownblks release fsRev name
------  ------    ------------   ------- ------- ----- --------
 3    complete   Sep 27 16:05   12913  9.11 44038 snapshot2
  2    complete   Sep 26 16:05     32   9.11 44038 snapshot1
  1    complete   Sep 25 16:05     32   9.11 44038 hourly.2022-09-25_1605

lccls91001::*> snapshot show -volume vol4
                                 ---Blocks---
Vserver  Volume   Snapshot                  Size Total% Used%
-------- -------- ------------------------------------- -------- ------ -----
svm91001 vol4
          hourly.2022-09-25_1605           128KB    0%   50%
          snapshot1                 128KB    0%   50%
          snapshot2                 50.44MB 25%  100%
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