Ulrich wrote: > > >>> "Lentes, Bernd" <[email protected]> schrieb > am > >>> 08.12.2015 um > 09:13 in Nachricht <00a901d13190$5c6db3c0$15491b40$@helmholtz- > muenchen.de>: > > Digimer wrote: > > > >> >>> Should I install all vm's in one partition or every vm in a > >> >>> seperate partition ? The advantage of one vm per partition is > >> >>> that I don't need a cluster fs, right ? > >> >> > >> >> I would put each VM on a dedicated LV and not have an FS > between > >> the > >> >> VM and the host. The question then becomes; What is the PV? I > use > >> >> clustered LVM to make sure all nodes are in sync, LVM-wise. > >> > > >> > Is this the setup you are running (without fs) ? > >> > >> Yes, we use DRBD to replicate the storage and use the /dev/drbdX > >> device as the clustered LVM PV. We have one VG for the space (could > >> add a new DRBD resource later if needed...) and then create a > >> dedicated LV per VM. > >> We have, as I mentioned, one small LV formatted with gfs2 where we > >> store the VM's XML files (so that any change made to a VM is > >> immediately available to all nodes. > >> > > > > How can i migrate my current vm's ? They are stored in raw files (one > > or two). > > How do I transfer them to a naked lv ? > > For migration the image must be available on both nodes (thus gfs2). > > >
Hi Ulrich, the migration i meant is the transition from my current setup (virtual machines in raw files in a partition with filesystem) to the one anticipated in the cluster (virtual machines in blank logical volumes without fs). How can I do that ? And can I expand my disks in the vm afterwards if necessary ? But the "other" migration (live-migration of vm's) is of course also interesting. Digimer wrote if I have my vm in a blank logical volume without fs, which is placed on a SAN, I can live-migrate because the process of live-migration takes care about the access to the lv and I don't need a cluster fs, just cLVM. Bernd Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Dr. Nikolaus Blum, Dr. Alfons Enhsen Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671 _______________________________________________ Users mailing list: [email protected] http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
