>I thought drbd didn't require this?

Well DRBD doesn't but if you want to access your mysql logs and datafiles you need both drbds. Neil probably wants to split logs and data for performance reasons - which really makes sence for non hardware raid assisted setups.

>I'm trying to make mysql on drbd work.  The complication
>is I have two drdb mount points (to represent the two different
>underlying disks: one for database data; one for the logs).

But Neil watch out to let your drbd devices run in synchronous mode only - if you use anything else than drbd protocol C you could run into trouble with databace consistency. Write order consistency is only guaranteed within a single drbd device in the mirroring state (correct me if I'm wrong @ drbd Linbit guys) - so with anything else than Protocol C you may rist ACID iif you run more than 1 drbd device for a SINGLE database.

Robert

Andrew Beekhof schrieb:



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