On Fri, Mar 28, 2008 at 8:15 AM, Ryan O'Hara <rohara@xxxxxxxxxx> wrote: > > The reason for the cluster LVM2 requirement is for device discovery. The > scripts use LVM commands to find cluster volumes and then gets a list of > devices that make up those volumes. Consider the alternative -- users > would have to manually define a list of devices that need > registrations/reservations. This would have to be defined on each node. > What make this even more problematic is that each node may have > different device names for shared storage devices (ie. what may be > /deb/sdb on one node may be /deb/sdc on another). Furthermore, those > device names could change between reboots. The general solution is to > query clvmd for a list of cluster volumes and get a list of devices for > those volumes. You can also use symbolic links under /dev/disk/by-id/ which are persistent across nodes/reboots. -Alex -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
