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Low memory state due to SLC holding extents

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215
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9
  • AFF-A220
  • Storage Area Network (SAN)
  • Commvault backup

Issue

  • Event Management System (EMS) logs show repeatedly low memory messages

Cluster::*> event log show -messages *mem*
Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
1/1/2020 08:16:11  Node-02           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 1151MB remaining.
1/1/2020 08:03:52  Node-02           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 1159MB remaining.
1/1/2020 07:52:36  Node-02           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 1163MB remaining.
1/1/2020 07:28:27  Node-02           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 1206MB remaining.
1/1/2020 06:05:27  Node-01           NOTICE        wafl.memory.statusLowMemory: WAFL is running low on memory, with 1197MB remaining.

  • Node disruption (Panic):

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

 

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