Hi Callum,

your LVM thin pool seams to be full.
Try to trim it with: fstrin -av.
 
Am 12.07.2018 um 13:13 schrieb Callum Smith <callum@well.ox.ac.uk>:

'lvcreate', '--thin', '--virtualsize', u'349121282048B', '--name', 'ovirt-node-ng-4.2.4-0.20180626.0', u'onn_virta003/pool00']'