Inconsistent file systems on drbd possible?

ablock

New Member
Mar 16, 2010
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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
 
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