[ClusterLabs] Vagrantfile for Clusters_from_Scratch 1.1-pcs tutorial

[Marcin Dulak]

Hi,

i started working on converting 
http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Clusters_from_Scratch 
into a Vagrantfile:
https://github.com/marcindulak/Clusters_From_Scratch-1.1-pcs
I got stopped at the STONITH configuration (Chapter 8): 
http://bugs.clusterlabs.org/show_bug.cgi?id=5241

I'm trying out SBD for STONITH, which i plan to handle by VirtualBox 
shareable hard disks 
(https://www.virtualbox.org/manual/ch05.html#hdimagewrites)
I'm using primarily these two documents 
https://www.suse.com/documentation/sle-ha-12/book_sleha/data/sec_ha_storage_protect_fencing.html
and http://www.linux-ha.org/wiki/SBD_Fencing but many things are 
different on Fedora 21.

Before I invest too much time:
- is SBD on a VirtualBox shareable hard disk a good idea?
- if so could you point me to a working example of SBD on modern Fedora 
+ pcs?
- i have experience in packaging RPMS so if there is any work related to 
sbd RPM needed I can contribute.
For example there is currently no sbd RPM on Fedora 21, 22 and I'm using 
the package from Rawhide's (23) koji.

Best regards,

Marcin