How to recover performance_schema after restoring from partial innobackupex backup? I am taking a partial backup from a Master server, which needs to be restored on a to-be slave server. I only need one of the databases, and the mysql database. 

I am following instructions on https://www.percona.com/doc/percona-xtrabackup/2.2/innobackupex/partial_backups_innobackupex.html

The command I'm using looks like this:

innobackupex --user=&lt;the_user&gt; --password --databases="&lt;database_name&gt; mysql" --slave-info /path/backup


The prepare command looks like this:

innobackupex --apply-log --export /path/backup


And then I 


  Copy back the prepared backup to a “clean” datadir (in that case, make sure to include the mysql database).


MySQL starts fine, but without a performance_schema and with a lot of 


  588 [ERROR] Native table 'performance_schema'.'' has the wrong structure 


on its error log. 

Any idea why this might happen, and how to get the performance_schema back?
The solution requires running mysql_upgrade on the server that has been restored. As per the documentation on https://dev.mysql.com/doc/refman/5.5/en/performance-schema-build-configuration.html


  If you install MySQL over a previous installation that was configured without the Performance Schema (or with an older version of the Performance Schema that may not have all the current tables), run mysql_upgrade after starting the server to ensure that the performance_schema database exists with all current tables. Then restart the server.