I'm following the instructions here: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.2/htm... I've also added an extra virtual disk to my host node which appears as /dev/sdb. Although the disk is partitioned, /dev/sdb1 is not created. Is udev broken in oVirt node? I cannot see anywhere in the dialog where you specify the name of the device (eg. "/dev/sdb1"). So how's it supposed to work? It doesn't work, giving an information-free error message: Error while executing action Add Storage Connection: Problem while trying to mount target Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org