Enabling xtrabackup support for snapshots and incremental backups.
BLC wont be able to do xtrabackup snapshots or incremental backups using xtrabackup if it is not installed on your servers.
To do this you must install xtrabackup.
wget https://repo.percona.com/apt/percona-release_0.1-4.lsb_release -sc _all.deb
sudo dpkg -i percona-release_0.1-4.lsb_release -sc _all.deb
$ sudo apt-get update