Hi Adam,
Just an idea, but could this be related to stale mounts from when you
rebooted the storage? Please try the following:
1. Place all nodes into maintenance mode
2. Disable the ovirt NFS exports
1. Comment out lines in /etc/exports
2. exportfs -r
3. Reboot your nodes
4. Re-enable the ovirt NFS exports
5. Activate your nodes
all storage domains (data/iso) are down, so is the data center
(non-responsive) and no nfs mount is on any of the nodes.
I can however manually mount the data export and touch a file (as root).
So I think stale mounts is not the issue.
However I did the steps and the result is the same.
Best,
Mo