Greetings,
The short question is: Is there any way to manage Hyper-V between clusters in a MC configuration without the VMs crashing?
We have seen KBs saying the Witness and persistent file handles can only be moved between cluster nodes.
We have a MC configuration that was running 9.1P17 and upgraded it to 9.3P14 during a downtime. We also had to physically move one half of the MC during this downtime.
We have a Hyper-V cluster running Server 2012R2, SMB 3.0, and CIFS file systems housing the VMs set as continuously available. During the downtime, most, but not all VM went down hard when switched to the other half of the MC, and also when switching back. It appears linux VMs housed on the same cluster/SVM that were moved did not object to the disruption and did not reboot.
Since the VM disk space went away when cluster1 was switched to cluster2, the clients had no access to disk space, and we have no event logs. We assume they paniced and rebooted.
The Hyper-V clients failed immediately as the switchover was started. Are there any types of timeout settings that can be configured for the VMs so they just pause during this and pick up again when the SVMs start up on the other half of the MC?
If the problem is with CIFS, we would be open to iscsi or SAN storage if it would allow them to survive a MC switchover.
Thanks,
Jeff