Got the issue.
DiskReservation resource has to be used with LVMVolumeGroup.
But in this case multiple path to the disk isnot supported.
So if you want to use DMMP+LVM2+VCS , Use DiskReservation with Single path
If you need Multipath use DMP + Vx...
I think the issue is with vgdisplay command output.
VCS uses vdsiaplay command for monitoring the status of LVMVolumeGroup. Since the output of vgdisplay command on both the cluster nodes are same in case of RHEL5.3, VCS thinks the VG is online on t...