sbeam wrote:
Thanks guys for the info. I understand that the secondary machine needs a /var too while in standby, and since it can't also mount it as part of the DRBD array, then it has to be a vanilla partition on both machines. Thanks for clearing that up.On Saturday 31 May 2008 09:28, Filipe Brandenburger wrote:You would be better off by using a DRBD partition for "/var/lib/mysql" and leaving the rest of "/var" out of DRBD.But DRBD only replicates entire physical devices right? So I would have to re-partition... if so I can't do that.
DRBD replicates partitions (does not have to be a separate physical device) ... the normal method is to create a new partition ... copy all the stuff to that partition that you want to fail over and sym link it back to its normal locations.
There is even a program called drbdlinks to automatically change the symlinks from normal when the drbd partition is in secondary mode (so you can easily do updates on your normal locations ... but the symlinks shift to the drbd partition when if becomes primary):
http://www.tummy.com/Community/software/drbdlinks/
But we could move mySQL files to /home or something as well. Not pretty but it should work.
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