I know LVM does not support clusters. The HOWTO makes a good job in explaining how it is not, and how you could use it at your own risk, at: http://tldp.org/HOWTO/LVM-HOWTO/sharinglvm1.html I realize nothing protects an in-use LV to be mounted by another host, which can severely corrupt non-clustered filesystems. i still have a few questions in this regard though: 1) What are my advantages of running LVM2 instead of LVM? LVM does all i need, i think, part from being cluster-enabled. LVM2 is also not clustered enabled, though it is the basis of CLVM (which is on its way?). Any advantages in this regard to already go to LVM2 now, even if only cause the upgrade to CLVM will go smoother? The only reason i wouldn't go to LVM2 is cause my RHES3.0 supports LVM out of the box, not LVM2, and i rather stick to included software / kernel modules / ... unless i have a valid reason not to. Or should i really go to EVMS? 2) Can snapshots safely be used by other nodes on the cluster? Say a 'master node' owns the LVM config of a particular node. It mounts all (non-snapshot) LV's in there. Can i have it create a snapshot on one of its LV's, mount this on another node to perform a backup (sparing the first node's cpu and network resources), then delete the snapshot on the master mode, all this while observing the 'Other Nodes' procedure on the above mentionned FAQ page? Is this a 100% safe & supported way of doing things? thanks, -seb. _______________________________________________ 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/
