Proxmox / DRBD split brain scenario


New Member
Dec 6, 2011
Hi all,

This is my first post so hello to the community and congratulation for this wonderful software.

I use proxmox for while (1.8 version in production in a SME) and I'm testing the 2.0 beta3 for HA feature.

What I have done so far is :
- installing / configuring Proxmox 2.0 beta3 in cluster mode on two physical machine
- install DRBD on a second hard drive on both machine and configure one VM (KVM) on a lvm storage on top of DRBD.

Migration from one to other are working (sometime needs a reboot although the "live" migration is used but I will dig into that later.

Now I want to test the following scenario:
I'm running my VM on node 1 of my cluster
I switch off the node 1 (simulation of a fault on this machine)
Assuming I have a problem on node 1 I imagined I could restart the VM on node 2 based on the up to date data of DRBD storage (Is that hypothesis correct ??)

To test this I simply start VM on node 1 and disconnect cable between node 1 and 2.
DRBD detected a spli brain and I 'm testing in Standalone on node 2
Since then acessing to the web interface of Proxmox on node 2 display my VM still on node 1 and migration on node 2 is impossible (pop up open but no target server available)

Did I miss something or am I using the DRBD feature the wrong way ?

Thank you for answers in advance and congratulations again to the development team of this very nice software.

HA is not implemented yet.


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