Hi, i have a 2-node-cluster with my services (web, db) running in VirtualDomain resources. I have a SAN with cLVM, each guest lies in a dedicated logical volume with an ext3 fs.
Currently i'm thinking about snapshoting the guests to make a backup in the background. With cLVM that's not possible, you can't snapshot a lustered lv. Using virsh and qemu-img i didn't find a way to do this without a shutdown of the guest, which i'd like to avoid. I found that ocfs2 is able to make snapshots, oracle calls them reflinks. So formatting the logical volumes for the guests with ocfs2 would give me the possibility to snapshot them. I know that using ocfs2 for the lv's is oversized, but i didn't find another way to solve my problem. What do you think ? I'd like to avoid to shutdown my guests, that's too risky. I experienced already several times that a shutdown can last very long because of problems with umounting filesystems because of open files or user connected remotely (on windows guests). Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum 208 HelmholtzZentrum münchen [ mailto:[email protected] | [email protected] ] phone: +49 89 3187 1241 fax: +49 89 3187 2294 [ http://www.helmholtz-muenchen.de/idg | http://www.helmholtz-muenchen.de/idg ] no backup - no mercy 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, Heinrich Bassler, Dr. Alfons Enhsen Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671 _______________________________________________ Users mailing list: [email protected] https://lists.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
