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% 。
- 在 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.
- 运行 qos 命令检查高延迟的源是否来自
Data第层:qos 命令,以实时监控卷延迟
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