Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Thank you for your input Lars, and apologies for my lack of understanding. I have done some more reading and I am still somewhat unsure as how to approch this. I will try to re-explain what I'm after and I would be grateful for any more of your time and guidance. ********* On-site ********* *** Off-site *** = NODE-1 = = NODE-2 = = NODE-DR = = VM-1 = = VM-1 = = VM-1 = = VM-2 = = VM-2 = = VM-2 = = VM-3 = = VM-3 = = VM-3 = = VM-4 = = VM-4 = = VM-4 = Under normal conditions I would like to run VM-1 & VM-2 on NODE-1 while VM-3 & VM-4 run on NODE-2. If NODE-1 dies NODE-2 runs all the VMs or visa-versa. If the site that NODE-1 & NODE-2 are based at blows up, NODE-3 is ready to run all VMs. I can use either block devices or image files for the VMs. What would you suggest would be the correct way to set this up? Lars Ellenberg wrote: > > On Thu, Sep 08, 2011 at 09:07:25AM -0700, SlingPirate wrote: >> >> Sorry about this it's just that I want to be absolutely certain. >> >> With the 3 node setup i could have both node 1 & node 2 reading & writing >> at >> the same time? >> >> Both local nodes would > > No, of course not. And that is not needed. > How about one DRBD per VM backing store block device? > > But if you insist on the complexity of using image files on some cluster > file system on dual primary DRBD, with proper fencing, of course, > that's your call. That would not necessarily help to improve your > availability, or performance, though. > >> Lars Ellenberg wrote: >> > >> > On Thu, Sep 08, 2011 at 08:47:12AM -0700, SlingPirate wrote: >> >> >> >> If I want to run VMs on both node 1 & node 2 they would need to be >> setup >> >> as >> >> dual primaries, is this not the case? >> > >> > No. >> > >> >> What I was trying to achive was two on-site servers that could fail >> over >> >> to >> >> one another OR in case both die node 3 runs all the servers (rather >> >> slowly >> >> of course!) >> > >> > Do a "classic" stacked three node setup. >> > >> >> Sorry for my ignorance but I dont quite understand your diagram for >> the >> >> alternative. >> > >> > No need anymore... > > -- > : Lars Ellenberg > : LINBIT | Your Way to High Availability > : DRBD/HA support and consulting http://www.linbit.com > > DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. > __ > please don't Cc me, but send to list -- I'm subscribed > _______________________________________________ > 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/Enabling-a-stacked-resource---HELP%21-tp32423513p32455659.html Sent from the DRBD - User mailing list archive at Nabble.com.