[ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2019-05-14 Thread Gary Lloyd
Hi We have Ovirt 3.65 with a Dell Equallogic SAN and we use Direct Luns for all our VMs. At the weekend during early hours an Equallogic controller failed over to its standby on one of our arrays and this caused about 20 of our VMs to be paused due to IO problems. I have also noticed that this

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-07 Thread Gary Lloyd
>From the sounds of it the best we can do then is to use a 60 second timeout on paths in multipathd. The main reason we use Direct Lun is because we replicate /snapshot VMs associated Luns at SAN level as a means of disaster recovery. I have read a bit of documentation of how to backup virtual

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-06 Thread Nir Soffer
On Thu, Oct 6, 2016 at 10:19 AM, Gary Lloyd wrote: > I asked on the Dell Storage Forum and they recommend the following: > > *I recommend not using a numeric value for the "no_path_retry" variable > within /etc/multipath.conf as once that numeric value is reached, if no >

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-06 Thread InterNetX - Juergen Gotteswinter
you need the eql hit kit to make it work at least somehow better, but hit kit requires multipathd to be disabled which is an dependency to ovirt. so far, no real workaround seems to be known Am 06.10.2016 um 09:19 schrieb Gary Lloyd: > I asked on the Dell Storage Forum and they recommend the

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-06 Thread Gary Lloyd
I asked on the Dell Storage Forum and they recommend the following: *I recommend not using a numeric value for the "no_path_retry" variable within /etc/multipath.conf as once that numeric value is reached, if no healthy LUNs were discovered during that defined time multipath will disable the I/O

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-04 Thread Nir Soffer
On Tue, Oct 4, 2016 at 7:03 PM, Michal Skrivanek < michal.skriva...@redhat.com> wrote: > > > On 4 Oct 2016, at 09:51, Gary Lloyd wrote: > > > > Hi > > > > We have Ovirt 3.65 with a Dell Equallogic SAN and we use Direct Luns for > all our VMs. > > At the weekend during early

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-04 Thread Nir Soffer
On Tue, Oct 4, 2016 at 10:51 AM, Gary Lloyd wrote: > Hi > > We have Ovirt 3.65 with a Dell Equallogic SAN and we use Direct Luns for > all our VMs. > At the weekend during early hours an Equallogic controller failed over to > its standby on one of our arrays and this caused

Re: [ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-04 Thread Michal Skrivanek
> On 4 Oct 2016, at 09:51, Gary Lloyd wrote: > > Hi > > We have Ovirt 3.65 with a Dell Equallogic SAN and we use Direct Luns for all > our VMs. > At the weekend during early hours an Equallogic controller failed over to its > standby on one of our arrays and this caused

[ovirt-users] VMs paused due to IO issues - Dell Equallogic controller failover

2016-10-04 Thread Gary Lloyd
Hi We have Ovirt 3.65 with a Dell Equallogic SAN and we use Direct Luns for all our VMs. At the weekend during early hours an Equallogic controller failed over to its standby on one of our arrays and this caused about 20 of our VMs to be paused due to IO problems. I have also noticed that this