Am 14.07.2011 12:17, schrieb Ralph Ballier: > are there any risks to upgrade from 2.2.17 to 3.0.0 RC2? In file "UPGRADING" > is written: " > Please test them first before applying them to your live database." I don't > know how to test > it before. My mysql database "dbmail" has about 30 GByte and about 10 > millions entries. > Probably I can't export or copy the database
you should not use any RC in production environment! export database should be quite simple if you forget classic dumps * two times rsync * the first time while mysqld is running * stop mysqld * the scond rsync is really fast because diff * start mysqld * after that configure dbmail 2.2.17 on the test-machine with your copy * use a script for both rsync, stop and start mysqld * your downtime will be minimal rsync --<params-below> /datadir/ root@testhost:/datadir/ --times --progress --force --recursive --delete-after --links --perms --owner --group --executability
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