[DRBD-user] Using DRBD for Backup and Cheap SAN ?

Dominik Klein dk at in-telegence.net
Mon Sep 10 08:25:45 CEST 2007

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

> It all should rock, I just read that I even can live-migrate my
> xen-domains from one server to the other with drbd 8.0.6..

If I understand this correctly, this is possible if the domU uses a drbd 
device directly.
If I understand *you* correctly, you want to use an LVM on a DRBD 
device. I'm not sure if it would work this was.

> Instead I will have 3 xen-dom0 Servers and each of them drbd-
> replicates their vms to another xen-server and so I should
> be able to migrate or boot a xen-vm on another server, regardless
> of which server just has a problem, should be raplaced and so on.

If you let Xen do the DRBD work and setup heartbeat to manage the Xen 
domUs, you can achieven high available Xen domains. You can even 
live-migrate using Linux-HA with Xen and DRBD.

A setup like that is running really nicely here. Feel free to contact me 
off-list if you want additional information.


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