The failure was caused because you had /var/log LV that was not mounted for some reason (was that manual by any chance?).  onn/var_crash was created during the update and removed successfully because of the var_log issue.  The only question is why it didn't clean up the onn/ovirt-node-ng-4.2.6...., it failed to clean it up for some reason.  Was the abrt process hanging this LV ?

Thanks,
Yuval

On Fri, Sep 14, 2018 at 11:53 AM, <p.staniforth@leedsbeckett.ac.uk> wrote:
I've managed to upgrade them now by removing logical volumes, usually it's just /dev/onn/home but one I had to keep reinstalling see were it failed so had to

lvremove /dev/onn/ovirt-node-ng-4.2.6.1-0.20180913.0+1
lvremove /dev/onn/var_crash
lvremove   /dev/onn/var_log
lvremove   /dev/onn/var_log_audit

I had trouble removing because failed because it was in use since there was an abrt process holding onto the mount.

Thanks,
             Paul S.
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