On Wed, Feb 18, 2009 at 11:56 AM, Tim Barney <[log in to unmask]> wrote:
> I wondered if anyone has experience using LInux-HA (High Availability) along
> with DRBD (provides software SAN)? Any one use these with a couple of MySQL
> servers for failover purposes?
>
DRBD in synchronous[1] mode tends to be slow. If database performance
is something you care about I would be concerned. I have no
experience with DRBD in other modes; but I'm pretty conservative and I
would hate to have my app call write(somedata) with an asynchronous
write that never completes because drbd is dead.
I've used Linux-HA. Properly set up with network close nodes it works great.
[1] Not sure if I have the right term. I mean the mode in which
syscalls do not return until data is written to the remote disk.
> I'd like to know of good or bad experiences. Failing any direct experience,
> I'll welcome heresay.
>
> Tim
>
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