由于 SLC 搁置区而导致内存不足
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- Category:
- ontap-9
- Specialty:
- 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
NOTICE
或ALERT
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。