[Linux-cluster] GFS over DRBD

[amrossi at linux.it]

On www.drbd.org i'm reading this:

 <<Since DRBD-8.0.0 you can run both nodes in the primary role, enabling
to  mount a cluster file system (a physical parallel file system) one
both nodes concurrently. Examples for such file systems are OCFS2 and
GFS.>>

Why?

>
>> can i use DRBD over a GFS cluster with 4/5 nodes?
>
> No.
>
> When using GFS, you access a block device concurrently from several
> nodes.  DRBD is meant for replicating block device operations, so
> this can't work when that device is written by more than one node.
>