---New VCS cluster build where LVM and native Linux LUN Multipathing are not operating properly
---system logs on nodes
sd 5:0:0:5: reservation conflict
sd 5:0:0:6: reservation conflict
sd 5:0:0:7: reservation conflict
sd 5:0:0:8: reservation conflict
Configuration of Linux RHEL5 LVM and native Multi-pathing is not supported by VCS.
LVM VCS failover requires three VCS resource agents: LVMVolumeGroup, LVMLogicalVolume and DiskReservation.
LVM currently does not operate with SAN multi-path LUNs.
LVMVolumeGroup agent requires the DiskReservation agent to manage LUNs with single paths only.
From the VCS 5.1 Bundled Agent Reference Guide:
If SAN LUN multipathing is a requirement for the VCS cluster, the recommedation is to migrate LVM data to VxVM 5.1 with its bundled DMP multipathing or use other VxVM compatible third party (TPD) multipathing software (e.g. EMC PowerPath).
2 node Linux RHEL5 VCS failover cluster
[root@dal-imndbn03 ~]# uname -m
[root@dal-imndbn03 ~]# uname -r
[root@dal-imndbn03 ~]# rpm -aq | egrep -i 'VRTSvxvm|VRTSvxfs|VRTSllt|VRTSgab|emc'
[root@dal-imndbn03 ~]# gabconfig -a
GAB Port Memberships
Port a gen add101 membership 01
Port h gen add104 membership 01