[Bug 1259860] [NEW] Apparmor doesn't allow volume to attach in 13.10 Ubuntu

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Host machine: Ubuntu desktop 13.10
Setup: devstack

When I try to attach a volume to an instance via the CLI, the volume
doesn't get attached. It's status still shows 'available'. While the
logs tell that 'device /dev/vdx is busy'. Here are the logs from screen
http://paste.openstack.org/show/54808/

I looked into /var/log/libvirt/libvirtd.log and found this:
http://paste.openstack.org/show/54809/

As per this guy's question at ask.openstack.org,
https://ask.openstack.org/en/question/7128/deviceisbusy-the-supplied-device-vdx-is-busy/
I uninstalled apparmor, and restarted and tried again. EVERYTHING went smooth! Looks like some issue with apparmor conflicting with libvirt.

** Affects: libvirt (Ubuntu)
     Importance: Undecided
         Status: New

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Apparmor doesn't allow volume to attach in 13.10 Ubuntu
https://bugs.launchpad.net/bugs/1259860
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