I don’t have the versions of XtraBackup handy (if it might matter).
I’m thinking about consolidating a Percona 5.5 cluster with a newer Percona 5.7.
I want do take the 5.5 cluster offline (or quiesce it by offlining all clients), do an XtraBackup backup, then restore that in my 5.7 (then repoint my clients to the new DB cluster).
The thing perhaps is that this is a consolidation meaning I have DBs A/B/C on 5.5 and X/Y/Z on 5.7. Excluding the users that I need to manually copy over, is this something XtraBackup can do, without blowing away my existing X/Y/Z DBs on 5.7?