On 01/06/2011 08:19 AM, Lentes, Bernd wrote: > I want to run my DRBD-devices on logical volumes, because they are easy to > resize. Assume that i have two nodes with one kvm in each case. The KVM is > being installed in a a plain LV, without filesystem and without being > mounted. The lv's are synchronised with DRBD. Do i need clvm or lvm ? > > Bernd
Using DRBD resources as LVM PVs is perfectly fine. Keep in mind though that I don't think DRBD resources can be resized themselves, though I could be wrong. What I've done in the past is to simply setup a second DRBD resource, set it as a PV and then add that PV to the common VG. If you're building a 2-node cluster and you are running Primary/Primary, then yes, I think Clustered LVM is best (perhaps not *strictly* required). Given that each VM is on a dedicated LV, in theory you should not need clustered locking, though I think having CLVM is a good idea. It gives you the option of creating a GFS2 partition with the VMs XML config files, shared ISOs, etc. I always do this, so I should say that I've not looked at the feasibility of *not* using CLVM/GFS2. Cheers -- Digimer E-Mail: [email protected] AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
