How well does oVirt handle an EqualLogic SAN controller switchover event? IIRC that can result in a short iSCSI "pause" (can't remember how long it takes) - I'm not sure what oVirt's threshold before VMs (including the hosted engine) get paused for storage timeouts. I've got a small setup where the active SAN controller's battery has gone bad, so I need to switch to the other controller, and I'm trying to figure out the impact - do I need to shut all VMs (including the engine) down first, will they just briefly pause and then continue, etc.

Do you have an idea how long will it take ?

Keep in mind that in case the domain is declared unavailable (reached a threshold , which I doesn't know) , all VMs using it will be paused and oVirt will try to recover them once the storage is back available.

This might help. https://www.dell.com/community/EqualLogic/Linux-multipath-conf-Multipathd... What the first poster said about Dell's recommendations are accurate (I'm a long time Equallogic user) On 2/27/20 12:34 PM, eevans(a)digitaldatatechs.com wrote: > I worked with Equalogic in the past. Doesn't it have the ability to replicate to a partner Equalogic? > If so, replicate, once complete do a failover to the new one. > That may be a simplistic approach and not sure if it's Dell best practices to do so. > Just a thought. > > Eric Evans > Digital Data Services LLC. > 304.660.9080 > > > -----Original Message----- > From: Chris Adams <cma(a)cmadams.net&gt; > Sent: Thursday, February 27, 2020 12:55 PM > To: users(a)ovirt.org > Subject: [ovirt-users] Re: EqualLogic SAN controller switchover > > Once upon a time, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; said: >> Do you have an idea how long will it take ? > > No, it has been years and years since I had to do a switchover on an EqualLogic (they mostly just run). I know I've read of others using EqualLogic's for oVirt, so I'm hoping for someone who's experienced a switchover... > >> Keep in mind that in case the domain is declared unavailable (reached a threshold , which I doesn't know) , all VMs using it will be paused and oVirt will try to recover them once the storage is back available. > > Right - with the hosted engine on the SAN, I am also curious how that is impacted (how will the engine HA tooling handle a pause). > -- > Chris Adams <cma(a)cmadams.net&gt; > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/F44KYWA6SPM... > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/Z6ER5NXH67X... > _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/42FL4GE6KRN...