On Wed, Dec 15, 2021 at 8:25 AM <[email protected]> wrote: > I've got an issue with one of my oVirt 4.3.10.4 clusters. OS is Centos > 7.7, storage is glusterfs. Whenever I try to create a snapshot of any of my > VMs, I get an (eventual) error: > > VDSM track04.yard.psc.edu command HSMGetAllTasksStatusesVDS failed: Could > not acquire resource. Probably resource factory threw an exception.: () > > After a bit of investigation, I believe that the root cause is that the > snapshot file created is not owned by vdsm:kvm. Looking at the directories > in glusterfs, I see that some of the disk images are owned by root:root, > some are owned by qemu:qemu. In fact, if we watch the directory for the VM, > we can actually see that the files are owned by vdsm:kvm when they are > created, then get changed to qemu:qemu, then eventually get changed to > being owned by root:root. This is entirely repeatable. Needless to say, > oVirt can't read the disk images when they are owned by root, so that > explains why the snapshot is failing. The question, then, is why the > ownership is getting changed out from under the creation process. Checking > the gluster volume info shows: > > Volume Name: engine > Type: Replicate > Volume ID: 00951055-74b5-463a-84c0-59fa03be7478 > Status: Started > Snapshot Count: 0 > Number of Bricks: 1 x 3 = 3 > Transport-type: tcp > Bricks: > Brick1: 10.200.0.131:/gluster_bricks/engine/engine > Brick2: 10.200.0.134:/gluster_bricks/engine/engine > Brick3: 10.200.0.135:/gluster_bricks/engine/engine > Options Reconfigured: > performance.client-io-threads: off > nfs.disable: on > transport.address-family: inet > performance.quick-read: off > performance.read-ahead: off > performance.io-cache: off > performance.low-prio-threads: 32 > network.remote-dio: off > cluster.eager-lock: enable > cluster.quorum-type: auto > cluster.server-quorum-type: server > cluster.data-self-heal-algorithm: full > cluster.locking-scheme: granular > cluster.shd-max-threads: 8 > cluster.shd-wait-qlength: 10000 > features.shard: on > user.cifs: off > storage.owner-uid: 36 > storage.owner-gid: 36 > network.ping-timeout: 30 > performance.strict-o-direct: on > cluster.granular-entry-heal: enable > > I see that the owner UID and GID are correct (vdsm:kvm). Note that > snapshots worked at one point in the past - I see that there are snapshot > images from a year ago. Any ideas where to look to correct this? Thanks! > Hi Tod, I don't know what is your libvirt version but we had a relevant bug in the past: https://bugzilla.redhat.com/show_bug.cgi?id=1851016 To re-use your current snapshots (those that are root:root) you may need to change the ownership. Please check if the bug above is the one you are hitting.
Regards, Liran > > Tod Pike > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > 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/[email protected]/message/C3RBNTD6RCFRMDZJLDM6KGBK2XITIA54/ >
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