[ovirt-users] Re: NFS ISO Domain - Outage ?

On March 11, 2020 9:45:30 AM GMT+02:00, Nardus Geldenhuys < nardusg(a)gmail.com&gt; wrote: >Hi Ovirt Mailing-list > >Hope you are well. We had an outage over several ovirt clusters. It >looks >like we had the same ISO NFS domain shared to all off them, many of the >VM's had a CD attached to it. The NFS server went down for an hour, all >hell broke lose when the NFS server went down. Some of the ovirt nodes >became "red/unresponssive" on the ovirt dashboard. We learned now to >spilt >the NFS server for ISO's and/or remove the ISO's when done. > >Has anyone seen similar issues with an NFS ISO Domain? Is there special >options we need to pass to the mount to get around this? Can we put the >ISO's somewhere else? > >Regards > >Nardus Hi Nardus, The iso domain is deprecated, but there are some issues when uploading ISOs to block-based data domains.Using ISOs uploaded to gluster-based data domain is working pretty fine (I'm using it in my LAB), but you need to properly test prior implementing on Prod. As far as I know, oVirt is making I/O checks frequently , so even the hard mount option won't help. Is your NFS clusterized ? If not ,you may consider clusterizing it. Actually, did your VMs got paused or completely crashed ? Best Regards, Strahil Nikolov