Ahoi, I would like to propagate two ideas (did it on #irc some times but still some love is missing) 1. Force PK option. I would like to have an option to force PK for (innodb) tables. Forcing is quite easy (a poc from 2011): http://linsenraum.de/erkules/2011/03/this-table-type-requires-a-primary-key.... Why? RBR and so Galera would benefit from such an option. 2. Global DDL Lock Without Global DDL Lock i.e. ALTER TABLE, DROP TABLE etc. brings you in trouble while doing a --single-transaction dump. You can use flush tables with read lock, but then you need not to do a single-transaction dump anyway. Even xtrabackup got troubles: https://bugs.launchpad.net/percona-xtrabackup/+bug/722638 I got to confess I think ignoring tablespace ids is the right soltution. Even I think this are simple options. I believe they would be quite welcome to a lot of dba's out there. Regards Erkan -- über den grenzen muß die freiheit wohl wolkenlos sein