----- On Mar 15, 2018, at 3:47 AM, Gang He [email protected] wrote: > Hello Lentes, > > >>>> >> 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. > Yes, OCFS2 reflink can meet your requirement, this is also why ocfs2 > introduces > file clone.
Hi, would you manage the ocfs2 of the logical volumes by fstab or by the cluster ? I'd prefer by fstab because then the cluster configuration would be more overseeable. 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, 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
