Cormac,
The problem you are observing looks unrelated to the original bug report. Though it seems similar to https://bugs.launchpad.net/percona-xtrabackup/+bug/910206.
Can you please make sure you are not running XtraBackup and Percona Server versions affected by that bug, and create a new one, if the problem persists with newer versions?
Cormac,
The problem you are observing looks unrelated to the original bug report. Though it seems similar to https:/ /bugs.launchpad .net/percona- xtrabackup/ +bug/910206.
Can you please make sure you are not running XtraBackup and Percona Server versions affected by that bug, and create a new one, if the problem persists with newer versions?