borg-client: Replace xtrabackup with mariabackup

roles/borg-client/tasks/main.yml

@@ -49,8 +49,8 @@
   file: path={{mysql_backup_dir}} state=directory owner=root group=root
   when: mysql_backup_dir is defined
 
-- name: install xtrabackup for mysql backup
-  pacman: name=xtrabackup state=installed
+- name: remove xtrabackup, mariadb ships its own fork
+  pacman: name=xtrabackup state=absent
   when: mysql_backup_dir is defined
 
 - name: install systemd timers for backup

roles/borg-client/templates/backup-mysql.sh.j2

@@ -5,4 +5,4 @@ backupdir="{{mysql_backup_dir}}"
 
 [[ ! -d "$backupdir" ]] && mkdir -p "$backupdir"
 rm -rf "$backupdir"/*
-xtrabackup $mysql_opts --backup --target-dir="$backupdir"
+mariabackup $mysql_opts --backup --target-dir="$backupdir"