extCache.io.writeError导致卷延迟和磁盘利用率较高

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Category:: fas-systems

Specialty:: perf

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适用场景

ONTAP 9
所有采用基于NVMe的闪存的FAS 系统

问题描述

其他卷延迟高至350毫秒
磁盘利用率高达90%
多Nblade.CifsOperationTimedOut个事件

Nblade.CifsOperationTimedOut: Detected a timed out CIFS operation. SMB command for this operation: SMB2_COM_QUERY_DIRECTORY, Number of times this command was suspended: 6, Number of times this command was restarted: 0, Last CSM error during this operation: CSM_OK, Remote blade UUID: 00000000-0000-0000-0000-000000000000 (cluster01), Is QoS enabled: QoS_disabled, Last nBlade error during this operation: 410, Client IP address: 10.1.2.3, Local IP address: 10.1.3.4, Target Vserver ID: 99, Target disk's DSID: 12345, Target Vserver Name: vserver01

多WAFL is running low on memory个事件

[cluster01: wafl_exempt10: wafl.memory.statusLowMemory:notice]: WAFL is running low on memory, with 914MB remaining.

多 WAFL external cache I/O write error 个事件

[cluster01: wafl_exempt03: extCache.io.writeError:notice]: WAFL external cache I/O write error: Insertq_save: unable to set up context chain, code 0