[ PCA ] NFS Issues After ZFS Takeover / Failback Cause OVM Manager to Become Unresponsive / to hang
(Doc ID 2386073.1)
Last updated on MAY 26, 2021
Applies to:Private Cloud Appliance - Version 2.3.1 to 2.3.3 [Release 2.0]
High Availability testing
After successful takeover/failback of a head on the ZFS storage system, the primary (active) Management Node was unable to access the nfs mount points on the active storage node.
- commands, such as "ls" or "pca-admin" were unresponsive.
- unable to read or write any files on the nfs mount points
- the OVM Manger UI is unresponsive
- entries in /var/log/messages:
All other computes nodes and the non-primary (passive) management node continued to be able to access the NFS mount points and files without issue.
Normal shutdown-reboot of the primary (active) management node did not complete. A "forced" reboot was required to fail-over the OVM Manager to the non-primary (passive) management node.
Newly-installed PCA 2.3.1 system undergoing "high availability" acceptance testing
As part of this, the active head of a zfs storage node was disabled to force takeover by the other head.
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