[ovirt-users] Re: How do I share a disk across multiple VMs?

Il giorno mar 20 apr 2021 alle ore 03:00 Thomas Hoberg <thomas(a)hoberg.net&gt; ha scritto: > Sharing disks typically requires that you need to coordinate their use > above the disk. > > So did you consider sharing a file system instead? > > Members in my team have been using NetApp for their entire career and are > quite used to sharing files even for databases. > > And since Gluster HCI basically builds disks out of a replicated file > system, why not use that directly? All they do these days is mount some > parts of oVirt's 'data' volume inside the VMs as a GlusterFS. We just > create a separate directory to avoid stepping on oVirt's toes and mount > that on the clients, who won't see or disturb the oVirt images. > > They also run persistent Docker storage on these with Gluster mounted by > the daemon, so none of the Gluster stuff needs to be baked into the Docker > images. Gives you HA, zero extra copying and very fast live-migrations, > which are RAM content, only. > > I actually added separate Glusters (not managed by oVirt) using erasure > coding dispersed volumes for things not database, because the storage > efficiency is much better and a lot of that data is read-mostly. These are > machines that are seen as pure compute hosts to oVirt, but offer distinct > gluster volumes to all types of consumers via GlusterFS (NFS or SMB would > work, too). > > Too bad oVirt breaks with dispersed volumes and Gluster won't support a > seamless migration from 2+1 replicas+arbiter to say 7:2 dispersed volumes > as you add tiplets of hosts... > +Gobinda Das <godas(a)redhat.com&gt; you may be interested joining this discussion. > > If only oVirt was a product rather than only a patchwork design! > You're welcome to help with oVirt project design and discuss with the community the parts that you think should benefit from a re-design. > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)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/JKRIJDB6PQS... > -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo(a)redhat.com <https://www.redhat.com/> *Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours. <https://mojo.redhat.com/docs/DOC-1199578>*