[linux-lvm] some principal questions about cLVM

[Seb]

Hello,

with clvm you can have the same VG shared/activated on several nodes.
You'll then choose where you want the LVs activated in your cluster config.
You can activate some of the LVs on 1 node, and the other LVs on another
node.

Regards,
--Sebastien


2012/6/5 Lentes, Bernd <bernd.lentes at helmholtz-muenchen.de>

> Hi,
>
> i'm new to cLVM. I used "normal" LVM several times, and i like it.
> I want to establish a two node cluster. As resources i have VM's (using
> KVM). Furthermore i will have a FC SAN.
> I'd like to build PV, then VG and finally LV's on top of the SAN. Every VM
> will reside in one LV.
> Is that ok ?
> My question is now: When i create virtual disks in my SAN, do i have to
> create a Virtual Disk (or LUN) on my SAN, then PV, VG and finally LV for
> every VM ?
> Or can i create ONE Virtual Disk (LUN) in my SAN, on top of that create
> ONE PV and ONE VG and finally for every VM one LV ? This would be easier.
>
> I'd like to have the VM's distributed between the two nodes, as a kind of
> Load-Balancing.
> Is it possible that the VG is running on both nodes simultaneously, having
> some LV's (and thereby some VM's) running on node 1 and others on node 2 ?
>
> Thanks for any answer.
>
>
> Bernd
>
>
> --
> Bernd Lentes
>
> Systemadministration
> Institut für Entwicklungsgenetik
> HelmholtzZentrum münchen
> bernd.lentes at helmholtz-muenchen.de
> phone: +49 89 3187 1241
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> http://www.helmholtz-muenchen.de/idg
>
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