strace shows: 5082 open("/var/lib/uvtool/libvirt/images/x-uvt-b64-Y29tLnVidW50dS5jbG91ZDpzZXJ2ZXI6MTYuMDQ6YW1kNjQgMjAxNjAxMjU=", O_RDWR|O_CLOEXEC) = -1 EACCES (Permission denied)
The apparmor profile (libvirt-uuid.files) includes: "/var/lib/uvtool/libvirt/images/x-uvt-b64-Y29tLnVidW50dS5jbG91ZDpzZXJ2ZXI6MTYuMDQ6YW1kNjQgMjAxNjAxMjU=" r, # don't audit writes to readonly files deny "/var/lib/uvtool/libvirt/images/x-uvt-b64-Y29tLnVidW50dS5jbG91ZDpzZXJ2ZXI6MTYuMDQ6YW1kNjQgMjAxNjAxMjU=" w, "/var/lib/uvtool/libvirt/images/docker-ds.qcow" rw, /dev/vhost-net rw, "/var/lib/uvtool/libvirt/images/x-uvt-b64-Y29tLnVidW50dS5jbG91ZDpzZXJ2ZXI6MTYuMDQ6YW1kNjQgMjAxNjAxMjU=" rw, That long filename is the (readonly) backing file for the root disk. sudo qemu-img info docker.qcow image: docker.qcow file format: qcow2 virtual size: 30G (32212254720 bytes) disk size: 7.0G cluster_size: 65536 backing file: /var/lib/uvtool/libvirt/images/x-uvt-b64-Y29tLnVidW50dS5jbG91ZDpzZXJ2ZXI6MTYuMDQ6YW1kNjQgMjAxNjAxMjU= backing file format: qcow2 Format specific information: compat: 0.10 refcount bits: 16 So it would seem we could consider this (a) a bug in qemu for requiring write access to a readonly backing file, or (b) a bug in libvirt for denying that write access. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1554031 Title: error: internal error: unable to execute QEMU command ‘block-commit’: Could not reopen file: Permission denied To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1554031/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs