On 2017-07-18 01:41 PM, Lentes, Bernd wrote: > > > >>>> >>> >>> Is with DRBD and Virtual Machines live migration possible ? >>> >>> >>> Bernd >> >> yes, but dual-primary is needed (this is how the Anvil! does live >> migration). With DRBD 9, you can set it up to momentarily do >> dual-primary to support live migration, though I have not used this >> myself yet. >> >> With dual-primary, you need to be sure a few things are in place (ie: >> proper fencing, but you need that anyway, a cluster resource manager, etc). >> > > On SLES 11 SP4 HAE DRBD 8.4 is available. Do i need a cluster fs on top of a > dual primary DRBD ? > I assume. > > > Bernd
Depends. If you want to have a shared FS, yes. If you want to back VMs though, we use clustered LVM to manage the DRBD space, creating per-VM LVs, and then use the resource manager to manage the servers. This keeps the LVM data in sync and avoids the cost of cluster locking. -- Digimer Papers and Projects: https://alteeve.com/w/ "I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops." - Stephen Jay Gould _______________________________________________ Users mailing list: Users@clusterlabs.org http://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org