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 Thanks for the response. Seems that they got paused, all came right after the NFS server came backup. Regards Nardus On Wed, 11 Mar 2020 at 11:34, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; wrote: > 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 >