[Bug 1417288] Re: unable to create snapshot
Following the arguments made before on this bug about this being an uncommon or maybe even unsupported setup variant I'm marking the tasks that represent backports as won't fix. This setup only becomes more reasonable after [1] which isn't on anyone's active work-queue atm AFAIK - and even then is a new feature unlikely to be backported. [1]: https://gitlab.com/libvirt/libvirt/-/issues/135 ** Changed in: libvirt (Ubuntu Bionic) Status: Incomplete => Won't Fix ** Changed in: libvirt (Ubuntu Focal) Status: Incomplete => Won't Fix ** Changed in: libvirt (Ubuntu Groovy) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
There still are known issues around volume usage with apparmor isolation which are tracked elsewhere. But you are right - thanks Garry - one of the inderlying issues about a) modifying non-local storage (https://listman.redhat.com/archives/libvir-list/2020-November/msg01252.html) b) internatl snapshots translation on type=vollume (https://listman.redhat.com/archives/libvir-list/2020-November/msg01253.html) Are fixed by this series (the rest improves the abort and error messages). That series is in libvirt since v6.10 .0 and thereby it is indeed in 21.04 and later. ** Also affects: libvirt (Ubuntu Groovy) Importance: Undecided Status: New ** Also affects: libvirt (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: libvirt (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: libvirt (Ubuntu Hirsute) Importance: Undecided Status: New ** Changed in: libvirt (Ubuntu Hirsute) Status: New => Fix Released ** Changed in: libvirt (Ubuntu Groovy) Status: New => Incomplete ** Changed in: libvirt (Ubuntu Focal) Status: New => Incomplete ** Changed in: libvirt (Ubuntu Bionic) Status: New => Incomplete ** Changed in: libvirt (Ubuntu Bionic) Importance: Undecided => Low ** Changed in: libvirt (Ubuntu Focal) Importance: Undecided => Low ** Changed in: libvirt (Ubuntu Groovy) Importance: Undecided => Low ** Changed in: libvirt (Ubuntu) Assignee: Stefan Bader (smb) => (unassigned) ** Changed in: libvirt (Ubuntu) Status: Incomplete => Fix Released ** Bug watch added: gitlab.com/libvirt/libvirt/-/issues #135 https://gitlab.com/libvirt/libvirt/-/issues/135 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
This appears to have already been fixed for some cases. I was able to snapshot a qcow2 volume on 21.04 (libvirt 7.0.0). Upstream discussion (I think this is the relevant change): https://gitlab.com/libvirt/libvirt/-/issues/97 ** Bug watch added: gitlab.com/libvirt/libvirt/-/issues #97 https://gitlab.com/libvirt/libvirt/-/issues/97 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
Lowering the priority here. Not really sure this will be ever fixed. But likely need to revisit the latest libvirt. ** Changed in: libvirt (Ubuntu) Importance: High => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
I noticed this, too. And that it seemed to work with later releases. However this is only half true. Actually that error still exists in the tip of the libvirt tree. There is only on commit that fixed an inconsistency related to the --children option with a note saying it would be nice if we would support deletion of external snapshots one day. So deletion in Trusty/14.04 (still?) requires to add "--metadata" (only deletes the info but leaves the snapshot file which then has to be removed manually outside libvirt). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
thanks for the time you've devoted to this. your assessment seems to be exactly the case, given a little more testing here. i've converted to a disk type of file, and snapshots work [mostly - see my next comment]. i'd never used/tried snapshots with this particular configuration. i'm sure you're right - it probably didn't ever work. although i really do like being able to use pools and volumes, for the sake of structure and organization and being able to avoid literal filesystem paths within guest definitions, i've switched from volumes back to files, since i don' really have a choice if i want snapshots. from a practical standpoint, it would be nice to have this functionality. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
i can now create snapshots if using --disk-only, but i guess this is an "external" snapshot? which leads to other problems, like not being able to delete it: >virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot >3' error: operation failed: Error -22 while writing VM >virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot >3' --atomic error: operation failed: Error -22 while writing VM >virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot >3' --atomic --disk-only Domain snapshot test_snapshot_3 created >virsh snapshot-list orb-template-ubuntu Name Creation Time State test_snapshot2015-09-23 15:07:02 -0400 disk-snapshot test_snapshot_2 2015-09-23 15:07:44 -0400 disk-snapshot test_snapshot_3 2015-09-23 15:55:18 -0400 disk-snapshot >virsh snapshot-delete orb-template-ubuntu test_snapshot_3 error: Failed to delete snapshot test_snapshot_3 error: unsupported configuration: deletion of 1 external disk snapshots not supported yet -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
** Changed in: libvirt (Ubuntu) Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
I looked a bit more into this and more and more get the impression that this particular setup has not and is not supported. Ben, did snapshots with type volume storage definitions ever work for you? And the other question would be whether it is possible to convert the currents guests and the process of creating new guests to use the type=file format of storage definitions. A bit more background: snapshots are only supported on file-backed disks. When defining a disk as type=volume, the internal structure that holds the disk stores both the volume name (type=volume) and the path (type=file) in the same source element. But all the code for snapshots assumes a local path in there. For type=volume this would require additional checking (since there are pools that do not contains file backed volumes) and re-direction (to resolve the volume name into a path). None of this is present even in the recent releases of libvirt. So it might be a restriction that has not been documented well. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
I was able to to reproduce this. The important detail is to use the disk type volume not file as we normally do. ** Changed in: libvirt (Ubuntu) Assignee: (unassigned) = Stefan Bader (smb) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: libvirt (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
** Changed in: libvirt (Ubuntu) Importance: Undecided = High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
yes, it still has this behavior with 1.2.8-0ubuntu11.4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
Hm, I can't reproduce this: virsh !! virsh snapshot-create-as debianwheezy 'test_snapshot' 'test snapshot' --atomic Domain snapshot test_snapshot created -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1417288] Re: unable to create snapshot
Just to be sure, could you confirm that 1.2.8-0ubuntu11.4 still has this behavior? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1417288 Title: unable to create snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1417288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
