Inconsistent file systems on drbd possible?

[ablock]

Hi,
I want to install a cluster on a shared drbd-storage. On this storage a logical volume is created and this is formatted as xfs and mounted in a directory. This directory is bound as a storage for virtual machines in proxmox.
Now I want to create in this storage 4 virtual machines in qcow2 format.
What happens if I migrate 2 machines to the second node? The virtual hard disks can grow. 2 grows under the control of one node and 2 grows under the control of the other node. Is it possible that this leads to inconsistent file systems?
Xfs is a journaling file system. What happens if both nodes updates independently the journal?

Thanks
A. Block

 

[udo]

Hi,
if you want to mount the filesystem on two (or more nodes) you need a cluster-filesystem. With xfs and other you will get fast dataloss (and kernel-panic i guess).

Udo

 

[Mirage]

You can't use journalized FS with drbd, as in your setup it have to be in primary/primary mode.

I suggest you to have a look to GFS2 or OCFS