I have a support case open that has not had the response time I was hoping for.
But here is the issue.
We have a 2 host Hyper-V 2012r2 cluster, using an equallogic ps6100 san.
The firmware for the san and hosts are all up to date, the integration tools for the SAN are all up to date. Everything you could possibly think of, is up to date.
However, Veeam will not back up any virtual machines on host 1.
When you go to backup infrastructure, select the host and go to manage volumes.. If you do a rescan on host 1 for what kind of writer to use (whether equallogic VSS or Microsoft CSV), it will freeze up Veeam, or not respond for an hour+ before ending Veeam through task manager.
Veeam spits out failures in the backup log stating that Could not read VSS, we also see messages in Veeam stating that the Hyper-V is locked.
In the host that fails to backup, you see messages about compatabilitychecker.exe failing, the error comes up every 5 to 10 minutes, other than that there are no VSS writer failures in VSSADMIN LIST WRITERS and no errors on the SAN.
Makes no sense.....