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通过使用{\f2}{\f2 trident}后端选项{\f2 "shAPshotReserve"}创建的ONTAP卷比预期的大

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trident-kubernetes<a>2009836984</a>
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snapx
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适用场景

Asta Trandent 21.07及更高版本

问题描述

  • 在定义ONTAP 三 端以提供也具有 快照功能的PVC时、或者在卷将运行基于ONTAP的快照的情况 snapshotReserve 下、可以在 后端的默认部分下为每个PVC设置。
  • 请求具有特定大小的PVC时、如果将 snapshotReserve 百分比添加到请求的PVC大小[Total volume size =(PVC Requested size)*(1 +(snapshotReserve百分比))、则分配给Snapshot使用量(以及总卷大小)的空间量似乎大于预期 /100)]
  • 以下是根据 snapshotReserveontap-nas backend [ snapshotReserve 无法将A设置为100%(#DIV/0)]中指定的不同百分比为1 GB卷指定的PVC在ONTAP中得到的卷大小示例:
 

PVC
大小 (GB)


PVC
snapshotReserve %
百分比

ONTAP
快照预留可用(GB) 

ONTAP
卷总大小(GB)
    1     10 0.11. 1.11.
1 20 25% 1.25
1 30 0.43 1.43
1 40 0.67 1.67
1 50 1 2
1 60 1.5 2.5
1 70 2.33 3.33
1 80 4 5
1 90 9 10
1 100 #DIV/0! #DIV/0!

 

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