On Wed, Mar 16, 2022 at 4:45 PM Demeter Tibor <tdeme...@itsmart.hu> wrote: > > Dear Didi, > Thank you for your reply. > > My glusterfs uses the host's internal disks. I have 4 hosts, but the > glusterfs use only 3. It is a centos7 based system. > > As I think, I have to elminate the glusterfs first, because I can't upgrade > the hosts until the engine running on there. That's why I think the engine > will access to them after the reinstall.
Sorry, I do not think I understand your reasoning/plan. Please clarify. > Is it fine? If the question is: "I have a HC hosted-engine+gluster on 3 hosts + another host. I want to move the hosted-engine (on one of the hosts? not clear) to external iscsi storage. Will the new engine be able to access the gluster storage on the existing hosts?" Then, sadly, I don't know. I *think* it will work - that gluster does not need the engine to function - but never tried this. > What pitfalls can I except in this case? Many, if you ask me - mainly, because it's a flow probably hardly anyone ever tried, and it definitely goes out of the set of assumptions built into the basic design. I strongly suggest to test first on a test env (can be on nested-kvm VMs, no need for physical hosts) and to have good backups. But in theory, I can't think of any concrete point. Best regards, > > Thanks in advance, > Tibor > > > ________________________________ > Feladó: Yedidyah <d...@redhat.com> > Címzett: Demeter <tdeme...@itsmart.hu> > Másolat: users <users@ovirt.org> > Dátum: 2022. március 16., szerda 15:08 CET > Tantárgy: Re: [ovirt-users] Replace storage behind ovirt engine > > On Wed, Mar 16, 2022 at 1:39 PM Demeter Tibor <tdeme...@itsmart.hu> wrote: > > > > Dear Users, > > > > I have to upgrade our hyperconverged ovirt system from 4.3 to 4.4, but > > meanwhile I would like to change the storage backend under the engine. At > > this moment it is a gluster based clustered fs, but I don't really like > > it.... I would like to change to a hardver based iscsi storage. > > I just wondering, when I do the engine reinstall, I will install it to an > > other storage. > > Is it possible somehow? > > The "canonical" way is: > 1. On current engine machine: engine-backup --file=f1 > 2. (Re)Install a new host (with 4.4?), copy there f1, and: > hosted-engine --deploy --restore-from-file=f1 > > This only handles your engine VM, not others. The new engine (with its > hosted_storage on the new iscsi storage) will need access to the > existing gluster storage holding the other VMs, if you plan to somehow > import/migrate/whatever them. If unsure how to continue, perhaps > clarify your plan with more details. > > Good luck, > -- > Didi > -- Didi _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/ALOVHR4JL7L4Y7NQZUQQQQECAFNWNVNT/
