difference of use ShareMount/OCFS2 and CLVM as primary storage of ClousdStack

[ro...@cywee.com]

Hi,
Could any one help explain the difference of use ShareMount/OCFS2 and CLVM as 
primary storage for Cloudstack clusters?
For ShareMount/OCFS2 mode, when there has problem for OCFS2 on a host, 
Cloudstack Manager does not know the situation and the VM on this host can not 
be migrated to other host.
However, for CLVM mode, can the VM on the host  be migrated to other host when 
CLVM of the host has problem? 
 
Best Regards,



ro...@cywee.com