Boris Ostrovsky wrote: > (Resending with cc: fixed) > >> It's true that lvm is not cluster-aware. What that means is that if >> you update the >> volume groups on one node then the other nodes in the cluster will not >> see the >> changes and you could end up with the block devices on the machines >> dangerously >> out of sync. > > What if I can guarantee that other nodes will not access LVM metadata > (i.e. they will not issue any LVM command) until I run 'vgchange -ay' > on them? The only access that those other nodes will have to volumes > is that they will have some of them mounted. > > Is this still dangerous? My (limited) understanding of metadata is > that it is stored in the first few blocks of a disk (or striped, if > necessary) and is cached in lvm.cache. vgchange will sync disk and > cache, so it should be OK, right? Yes, that should work. Just be VERY, VERY careful! patrick _______________________________________________ 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/
