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qtree creation returns "Unable to post an update notification for Qtree"

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Category:
ontap-9
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core
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Applies to

ONTAP 9.9.1

Issue

  • After upgrade to ONTAP 9.9.1, qtree creation via CLI or REST errors out, but qtree is created successfully:

cluster::> qtree create -vserver svm1 -volume vol1 -qtree qtree_test1
Error: command failed: Failed to create qtree "qtree_test1" in volume "vol1" Vserver "svm1". Reason: Unable to post an update notification for Qtree qtree_test1. Retry in a few seconds.

  • At the same time mgwd.log on one or more cluster nodes shows Cannot allocate memory errors:
Wed Aug 17 2022 10:55:02 +02:00 [kern_mgwd:info:2821] 0x838c69f00: 0: ERR: MDB: create_row: qtree_rdb_queue: db->put(): Cannot allocate memory (0)
  • Or event log show might also show memory-allocation-related errors related to a specific cluster node, similar to:
8/17/2022 05:50:11 cluster-01 ERROR clus.reboot.persistencyError: Cluster reboot detection feature failed to save the node reboot information persistently. Error: 'Cannot allocate memory'.
  • Cluster shell commands may error out with error string Cannot allocate memory referring a specific cluster node:

cluster::*> job history show  -count-only
Warning: Unable to list entries on node cluster-01. Cannot allocate memory
Entries found: 124114
The command was aborted before completing.

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