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为什么 Linux 中的已用百分比与 NetApp 中的已用百分比不同?

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适用场景

ONTAP 9

问题解答

在 NetApp 中,卷大小为:可用大小 + NetApp 已用大小+ 过度配置大小。
在 Linux 中,卷大小为:可用大小 + Linux 已用大小。
 
Linux 已用大小 = NetApp 已用大小 + 过度配置大小。 
 
 
示例:
 
此卷将显示:
 
Vserver  Volume    Aggregate   State    Type Size    Available  Used%
--------- ------------ ------------ ---------- ---- ---------- ---------- -----
Vserver1  vol1     -       online   RW  480TB    65TB    69%  
 
通过转到 Active IQ > AutoSupport > Volume.xml ,我们可以看到以下内容:
 
KB.jpg
  • 卷大小: 527765581332480B ( =480 TB )
  • 可用大小: 71635437178880B ( =65TB )
  • 已用大小: 363887210782720B ( =331TB )。
  • 过度配置大小: 92242933370880B ( =84TB )。

因此, NetApp 已用大小百分比为 331/480= 69%

但是,借助 Linux ,我们可以: 

Linux 已用大小 = NetApp 已用大小 + 过度配置大小 = 331TB+ 84 TB = 44 TB

因此, Linux 已用大小百分比为 415/480 =86%
 
Filesystem     Size Used Avail Use% Mounted on
10.10.10.4:/vol1  480T 415T 65T  86%  /vol1   

追加信息

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.