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聚合可用空间较低会影响性能

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ontap-9
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perf<a>Data ONTAP 7- 模式</a><a>集群模式 Data ONTAP</a><a>1028481</a>
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适用场景

ONTAP 9

问题描述

  • 用户或应用程序出现性能问题, ONTAP 显示的延迟比正常情况要高
  • 要检查聚合中的可用空间量、请运行 aggr show-space cluster shell命令。聚合可用空间较低,已用空间超过 90%

示例

cluster::> aggr show-space -aggregate <aggr_name> 
...
         Physical Used Percentage: 91%  

 

  • 可以 从 statit CDOT控制器或CP读取率较高的7-模式控制器的节点Shell上查看详细说明CP读取和写入操作的聚合磁盘统计信息

示例
::> set advanced
::*> node run -node node_1 statit -b
/* wait 60s */
::*> node run -node node_1 statit -e
...
disk        ut%  xfers  ureads--chain-usecs writes--chain-usecs cpreads-chain-usecs
/aggr1/plex0/rg0:
9d.01.0       36  99.01   0.00   ....    .  47.50  62.96   179  51.51  57.25   81 
9d.02.0       34 100.39   0.00   ....    .  48.92  61.20   162  51.48  57.25   68 
1c.03.0       56 206.74   99.04   3.22  2035  40.75  40.53   315  66.95  14.92   338 
9d.00.0       73 206.66  100.15   3.22  2993  40.26  40.76  1004  66.25  14.80   640 
9d.01.1       73 208.33  101.16   3.31  2918  40.38  40.48  1021  66.79  14.91   643 

  • 可能存在 EMS 日志条目: 
    [wafl.vol.full:notice]: Insufficient space on volume Cluster1_vol@vserver:0cc56ede-1c58-11e6-XXXX-00a09893e1f7 to perform operation. 8.00KB was requested but only 1.00KB was available.

 

 

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