On February 27, 2020 8:34:07 PM GMT+02:00, eevans@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@cmadams.net> Sent: Thursday, February 27, 2020 12:55 PM To: users@ovirt.org Subject: [ovirt-users] Re: EqualLogic SAN controller switchover
Once upon a time, Strahil Nikolov <hunter86_bg@yahoo.com> 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@cmadams.net> _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@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/F44KYWA6SPMFUR... _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@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/Z6ER5NXH67X7TQ...
If libvirt cannot write to the VM, it will be paused. Then several minutes later, the ovirt-ha-agent will realize they can't reach the status page of the engine and they will destroy and restart the HostedEngine VM. Then the engine will try to activate the storage domains and I'm not sure if it will be able to realize that the VMs were paused. At least it should fins your VMs paused and try to unpause them (as the storage domain has recovered). I think it will be safer, if you have another storage that you can migrate your VMs (temporarily) via storage migration and after the change - move them back if needed. Best Regards, Strahil Nikolov