On 08/29/2012 07:00 PM, Carlos Xavier wrote: > Hi Felix. > > Tank you very much to sharing your point of view, so it seams that the > temporary solution I took it will be a permanent solution. > Besides DRBD is being started outside of Pacemaker, Pacemaker is aware > of DRBD by the device and by the filesystem. I tested stopping DRBD and > starting it again and the partition got umounted ad mounted again, even > on reboots :-). > Although sometime i need to do a resouce cleanup to get all the things > working as it should.
You _must_ configure fencing in DRBD and STONITH in Pacemaker ... as discussed quite a lot already .... Regards, Andreas -- Need help with DRBD? http://www.hastexo.com/now > > Kind regards, > Carlos. > > > ----- Original Message ----- From: "Felix Frank" <[email protected]> > To: "Carlos Xavier" <[email protected]> > Cc: <[email protected]> > Sent: Wednesday, August 29, 2012 4:34 AM > Subject: Re: [DRBD-user] Split brain when starting resources by Pacemaker > > >> On 08/28/2012 10:55 PM, Carlos Xavier wrote: >>> Hi. >>> >>> Since there was no one hint to solve this trouble, the only temporary >>> solution I found to allow me to continue with the cluster configuration >>> was wipe out all the related DRBD configuration from the crm and start >>> the DRBD resources by the /etc/init.d/drbd init script. >>> >>> If someone have another solution I´ll be glad to hear about. >>> >>> Kind regards, >>> Carlos. >> >> Hi, >> >> I believe the problem is that pacemaker is not yet very well equipped to >> handle dual-primary setups (at least to my knowledge). >> >> In a traditional primary/secondary setup, a node becoming master can >> fence its peer and give you some safety against split brains. It's much >> more complex for dual-primary. You would basically need to teach >> pacemaker to remember which node left the cluster last, and make sure >> the other node does not get to work standalone. >> >> Again, I disbelieve that's currently possible. Maybe there's a simpler >> solution, though. >> >> Regards, >> Felix >> >> > > _______________________________________________ > drbd-user mailing list > [email protected] > http://lists.linbit.com/mailman/listinfo/drbd-user
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