[DRBD-user] DRBD and KVM for a HA-Cluster ?

Lentes, Bernd bernd.lentes at helmholtz-muenchen.de
Thu Jan 6 21:14:12 CET 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Ryan Earl wrote:

>On Thu, Jan 6, 2011 at 11:01 AM, Lentes, Bernd <bernd.lentes at helmholtz-muenchen.de> wrote:

>Digimer wrote:
> >>
> >
> > I don't want to setup a DRBD as a PV. My idea is to set up
> a DRBD on top of a LV, and to format or not format this LV,
> depending on the decision to install a KVM into a file or a
> plain device.
> > Is this setup ok ?
>I don't want to use a DRBD as a PV.

>My setup is like that:

><hardware raid>
> |
> |
> |
> |
> |
> |
><FS or vm in a plain LV>

>This should work ?
>Which setup did you discuss with RH ? Your old one or mine ?

>He talked about his.  Your setup is fine.  You can use the DRBD devices directly as disks for VMs, it is in fact a great practice with dual-primaries.  Using a file on a filesystem for the VM disk will add considerable overhead and complication.

How can a dual primary solution works, when i install the VM's in a plain lv ?  Don't i need a cluster aware filesystem (like OCFS2) for a dual primary solution ?


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