I am working for getting a alternative of built-in clustered locking. clvmd cannot support large size cluster well, and cannot across VLAN. In my opinion, a centralized locking mechanism is more suitable for large-scale cluster. If I just put locking_dir on a NFS volume with locking_type=1, can I use LVM to share a storage across machine? Or is there any document can guide me to write a new locking plug-in? Regards, Kirby Zhou from SOHU-RD +86-10-6272-8261 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/