[DRBD-user] dual primary mode with which FS
misch at multinet.de
Tue Mar 23 19:35:28 CET 2010
Am Dienstag, 23. März 2010 17:08:56 schrieb Digimer:
> On 10-03-23 10:02 AM, Florian Haas wrote:
> > On 2010-03-23 14:52, Michael Schwartzkopff wrote:
> >> Am Freitag, 19. März 2010 14:12:30 schrieb Andreas.Ruetten at hansenet.com:
> >>> Hi list,
> >>> first of all please answer also to my email-address because I'm not
> >>> subscribed to the ML.
> >>> Here are my questions:
> >>> I have to set up drbd 8.0.14 (Debian stable) in dual-primary mode.
> >>> One node has to read and write while the other node only need read
> >>> access.
> >>> Do I need GFS or OCFS?
> >> Not really if you can be sure that the second node ONLY reads.
> > Are you nuts? I thought you wrote books about this!
> >>> Or would a simple etx3 sufficient enough?
> >> Yes. Mount option "read-only" in the second node.
> > I repeat my above statement.
> > I'm totally baffled right now.
> > Andreas: you want to put a filesystem on dual-Primary DRBD, it has to be
> > a cluster filesystem. No ifs, buts, or maybes.
> > Question is, do you really need dual-Primary DRBD? You most probably
> > don't.
> > Florian
> From a purely technical view point, Michael isn't wrong. If the second
> node never changes a single block on the DRBD partition, it can't
> technically hurt it. Of course, you'd need to make sure that the node's
> DRBD doesn't try to recover from failures without first fencing the
> other node.
> It's not wise, but it's not impossible, either.
didn't have my best day today. Although it should be possbile I did not say it
is wise to do.
Dr. Michael Schwartzkopff
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