[DRBD-user] How to know which node was the last primary ?

Peter Sabaini peter at sabaini.at
Tue Jan 6 14:50:38 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Tuesday 06 January 2009 14:18:52 GAUTIER Hervé wrote:
> Peter Sabaini a écrit :
> > On Tuesday 06 January 2009 10:33:33 GAUTIER Hervé wrote:
> >> Unfortunately, I know well these states, but my question is in fact:
> >> In case of split brain (and at any time), does DRBD know which member
> >> still is or was primary ?
> >> Or each peer does not keep any information concerning the other ? And it
> >> will be to the clustering software to keep this information ?
> >
> > Hm, you probably can parse historical state data out of the kernel
> > logfile; otherwise I don't know if DRBD keeps past state data.
> >
> > The other question is -- what are you going to do with this information?
> > Have you looked at configuring the split brain recovery policy?
> Well, it is to implement a cluster manager. It will be easier if DRBD
> could give me this information.

Sorry, can't help you there...

> > Maybe it already
> > does what you want.  See http://www.drbd.org/users-guide-emb/s-configure-
> > split-brain-behavior.html#s-automatic-split-brain-recovery-configuration
> Not exactly.
> In fact, it is to refuse to start a DRBD service in case of split brain
> on a member which was not the last known (before split brain) running
> the service.

Isn't that what after-sb-0pri = disconnect does?


> Maybe dpod is the solution, but I am not sure.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090106/80c48b8a/attachment.pgp>

More information about the drbd-user mailing list