Thanks Murrayy, actually it's apparmour the problem: the --disk-only option of snapshot-create[-as] only supports external snapshot so it tries to create a new file which name matches no apparmour regexps in the corresponding profile.
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/1004606 Title: virsh create-snapshot fails to create external snapshot (blockdev- snapshot-sync fails in json monitor) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1004606/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs