[DRBD-user] drbd lvm xen cluster setup

Felix Frank ff at mpexnet.de
Fri Mar 25 09:24:19 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.


On 03/23/2011 04:18 PM, Martin Probst wrote:
> Hello List, 
> 
> Im using the following setup:
> 
> Two Nodes:
> physical harddisks contains a LVM with one VG and 4 LV. Each LV contains a xen based virtual machine.
> each LV is connected to the other node by an explicied drbd configuration in drbd.conf /dev/drbd1 to /dev/drbd4. 
> 
> Can I make consistend LVM snapshot backups from these four LVs on the secondary side? I've tested it twice and to backup was consistend. Was it luck or does it work? Im not sure.

Hi,

if you're comfortable with it, just disconnect the DRBDs. You needn't
even snapshot the secondary then. Just dd from the backing device.

I've tested this for Windows guests on several occasions and it works
quite well.

Cheers,
Felix



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