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完整灵活组卷的性能影响

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ontap-9
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perf<a>FlexGroup</a><a>2008513024</a>
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适用场景

  • ONTAP 9.1 及更高版本
  • FlexGroup

问题描述

  • 从一个 FlexGroup 卷观察到的响应时间较慢,该卷的所有或部分成分卷的容量均超过大约 90% 。
  • FlexGroup 卷上运行 ls 命令时响应速度非常慢。
  • 在某些情况下,它会导致节点的性能下降,使您无法连接到 SVM ,例如,提供的数据会受到影响
  • 成分卷之间的空间使用量差别很大的成分卷也可能受到类似影响,因为所有成分卷的容量都达到 80-90% 或更多。
  • OCUM 报告其他操作的延迟较高。
  • 事件日志中的潜在操作超时事件: 

[xxx: kernel: Nblade.dBladeNoResponse.NFS:error]: File operation timed out because there was no response from the data-serving node. Node UUID: 9xxx, file operation protocol: NFS, client IP address: xx.xx.xx.xx, RPC procedure: 3.

  • 事件日志中的 FlexGroup 卷空间不足错误:

wafl_exempt08: wafl.vol.fsp.full:error]: volume amperexxxxxx@vserver:xxxxxx: insufficient space in FSP wafl_remote_reserve to satisfy a request of 0 holes and 27 overwrites.
wafl_exempt08: wafl.vol.fsp.full:error]: volume xxxxxxx@vserver:xxxxxxxxxxx: insufficient space in FSP wafl_remote_reserve to satisfy a request of 2 holes and 27 overwrites

示例:

  • fg1 对于 FlexGroup ,所有成分卷已满 96% :

Cl集群::> volume show—vservervs1 -volume-style-Extended FlexGroup

Vserver   Volume       Aggregate    State      Type       Size  Available Used%
--------- ------------ ------------ ---------- ---- ---------- ---------- -----
vs1       fg1          -            online     RW        500GB    207.5GB   96%

clstr::> volume show -vserver vs1 -volume-style-extended flexgroup-constituent
Vserver   Volume       Aggregate    State      Type       Size  Available Used%
--------- ------------ ------------ ---------- ---- ---------- ---------- -----
vs1       fg1__0001    aggr3        online     RW      31.25GB    12.97GB   96%
vs1       fg1__0002    aggr1        online     RW      31.25GB    12.98GB   96%
vs1       fg1__0003    aggr1        online     RW      31.25GB    13.00GB   96%
vs1       fg1__0004    aggr3        online     RW      31.25GB    12.88GB   96%
vs1       fg1__0005    aggr1        online     RW      31.25GB    13.00GB   96%
vs1       fg1__0006    aggr3        online     RW      31.25GB    12.97GB   96%
vs1       fg1__0007    aggr1        online     RW      31.25GB    13.01GB   96%
vs1       fg1__0008    aggr1        online     RW      31.25GB    13.01GB   96%
vs1       fg1__0009    aggr3        online     RW      31.25GB    12.88GB   96%
vs1       fg1__0010    aggr1        online     RW      31.25GB    30.01GB   96%
vs1       fg1__0011    aggr3        online     RW      31.25GB    12.97GB   96%
vs1       fg1__0012    aggr1        online     RW      31.25GB    13.01GB   96%
vs1       fg1__0013    aggr3        online     RW      31.25GB    12.95GB   96%
vs1       fg1__0014    aggr3        online     RW      31.25GB    12.97GB   96%
vs1       fg1__0015    aggr3        online     RW      31.25GB    12.88GB   96%
vs1       fg1__0016    aggr1        online     RW      31.25GB    13.01GB   96%
16 entries were displayed.

clstr::> qos statistics volume latency show -vserver vs1 -volume fg1 Workload ID Latency Network Cluster Data Disk QoS Max QoS Min NVRAM --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 206.06ms 3.27ms 3.10ms 199.7ms 0ms 0ms 0ms 0ms fg1-wid233.. 23350 206.06ms 3.27ms 3.10ms 199.7ms 0ms 0ms 0ms 0ms -total- - 347.23ms 5.08ms 2.81ms 334.85ms 0ms 0ms 0ms 2.42ms fg1-wid233.. 23350 347.23ms 5.08ms 2.81ms 334.85ms 0ms 0ms 0ms 2.42ms -total- - 308.52ms 4.75ms 2.82ms 296.02ms 0ms 0ms 0ms 2.70ms

 

 

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