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由于 SLC 搁置区而导致内存不足

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ontap-9
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core<a>存储位置缓存</a><a> BURT 1299673 </a>
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适用场景

  • ONTAP 9
  • AFF-A220、AFF-A250
  • 存储区域网络(SAN)
  • 存储位置缓存(SLC)
  • Commvault备份

问题描述

  • 事件管理系统(EMS)反复发出LowMemory甚至VeryLowMemory事件:

Cluster::*> event log show -messages *mem*
Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
1/1/2023 08:16:11  Node-02           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 2151MB remaining.
1/1/2023 08:16:12  Node-02           ALERT         wafl.memory.statusVeryLowMemory: WAFL is running very low on memory, with 1159MB remaining.

  • 较旧的ONTAP 版本可能会发生节点中断(崩溃)或数据访问受到影响、例如:

Panic String: Process mgwd unresponsive for 836 seconds in process nodewatchdog on release 9.5P7 (C)

  • 这些 NOTICEALERT 事件会经常显示在LUN克隆任务周围、尤其是在Commvault使用克隆/备份/销毁任务备份LUN时。

 

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