Fri, 02 Jul 2010

Copying a MySQL database

Keywords: copy mysql database db directory files disk partition machine

I wanted to copy a MySQL database on a disk that used to be attached to a Ubuntu machine that died, to its replacement. It turns out not to be too difficult.

# stop mysql
# mv /var/lib/mysql /var/lib/mysql.orig
# cp -a /media/old-disk/var/lib/mysql /var/lib
# chown -R mysql:mysql /var/lib/mysql

There were a couple of files in /var/lib/mysql that were owned by root - mysql_upgrade_info and debian-5.1.flag in my case. Change them back to being owned by root.

# start mysql

I actually had to reboot since something hung on restarting mysql. I have no idea why. Logs can be found in /var/log/mysql/error.log if required.

[/software/mysql] permanent link

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