A volume can become inaccessible from the guest in the event of control domain reboot

All access to such a volume hangs if the primary domain is rebooted. This is due to the vdisk corresponding to the volume does not come back online after the control domain reboots.

This issue has been identified and fixed under Oracle (Sun) bug id: 6795836 (vd_setup_vd() should handle errors from vd_identify_dev() better)

This Oracle (Sun) bug is fixed in Oracle (Sun) patch 141777-01.