On Jan 8, 2007, at 12:39 PM, Lin Shen (lshen) wrote:
Dlm must know the nodes in the cluster. It most know when they are there. That's CMAN. It also must have all of the configuration to support knowing that. That's CCSd.
GFS must be able to handle a node failure of any kind. That's fencing.
Asking to run GFS without CMAN, fencing, and CCSd is like asking to run PHPmyadmin without Apache, PHP, or MySQL.
If you aren't sharing the data between two hosts simultaneously, you might try ReiserFS/XFS with CLVM. CLVM still requires the CMAN stack but it doesn't introduce some of the more exciting failure behavior that GFS can.