Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Thanks for answer and your proposition. But I am rather intersted in how it should behave in such situation. I know that with DRBD I have to way to cope with Split-Brain: manual and automatic (and automatic way highly depend on your solution). Let's assume that I would like use only manual way for recovering after split brain (this is what did you say - I should choose more up to date node and synchronize data with it). It is ok for me. But are there any good practices in case of disconnecting two primary nodes? I mean for example: killing node, switching node to read-only mode and so on? I would like to know how it should be behave in case of disconnecting nodes. Cheers RaveenPL Digimer wrote: > > On 10-09-30 10:39 AM, raveenpl wrote: >> >> Hello, >> >> I would like to have Primary/Primary cluster. The most wondering in this >> solution is for me how to cope with split-brain sitaution. >> >> I know that they are to two ways to fence nodes (on resource level and >> using >> STONITH) - but how they work in dual-primary mode? Maybe somebody could >> give >> step-by-step example? >> >> Cheers >> RaveenPL > > I use it with Red Hat Cluster Services and their fence daemon. I've got > an in-progress How-To, but it's not finished enough to post publicly > here. If you're okay with that, and are interested, send me an email > off-list and I'll send you the link. > > The setup is: > > - RAID Level 1 on either node. > - Cluster built using RHCS Cluster Stable 3 on Fedora 13 (until RHEL 6 > is released). > - DRBD across the two nodes. > - CLVM on top of the DRBD resource. > > If your question is more to do with recovering from split brain, then > it's as follows. Note that in this case, I chose 'Node 1' to be the most > up to date node. You'll need to make that decision yourself in the real > world. > > -= Node 1 -= Node2 > modprobe drbd modprobe drbd > drbdadm attach r0 drbdadm attach r0 > drbdadm invalidate r0 > drbdadm connect r0 drbdadm connect r0 > drbdadm primary r0 drbdadm primary r0 > > -- > Digimer > E-Mail: linux at alteeve.com > AN!Whitepapers: http://alteeve.com > Node Assassin: http://nodeassassin.org > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > > -- View this message in context: http://old.nabble.com/Dual-Primary-Split-Brain-tp29846515p29852309.html Sent from the DRBD - User mailing list archive at Nabble.com.