2008/6/1 Jan-Benedict Glaw <jbglaw@lug-owl.de>: > On Sun, 2008-06-01 23:09:01 +0200, Hannes Dorbath <light@theendofthetunnel.de> wrote: >> Jan-Benedict Glaw wrote: >> > However I still fail to find a good approach. One initial idea was to >> > export all physical volumes (partitions or full disks) vie NBD, join >> > them all on a single machine into one VG/LV, create a filesystem and >> > re-export that via NFS/SMB/... However, all data would need to go >> > through the net twice. While speed isn't the most important thing here >> > (but storage is!), that's way suboptimal. >> >> GlusterFS with Unify translator is exactly what you are asking for. >> >> http://www.gluster.org/docs/index.php/GlusterFS > > Already had a look at that, too. "Unify" seems to not directly > implement any measure of redundancy. So if one Brick goes down, > everything that was there is gone. Maybe its possible to play with the > `mirror' translator as well, but on the first look, it seems to be > non-trivial to accomodate for a steady loss and addition of bricks. > > MfG, JBG I haven't seen Lustre mentioned in this thread. I think there is kernel support, etc. May be worth checking out. (I have not used it.) Quoting wikipedia http://en.wikipedia.org/wiki/Lustre_(file_system) === High availability Lustre file system high availability features include a robust failover and recovery mechanism, making server failures and reboots transparent. Version interoperability between successive minor versions of the Lustre software enables a server to be upgraded by taking it offline (or failing it over to a standby server), performing the upgrade, and restarting it, while all active jobs continue to run, merely experiencing a delay. Lustre MDSs are configured as an active/passive pair, while OSSs are typically deployed in an active/active configuration that provides redundancy without extra overhead. Often the standby MDS is the active MDS for another Lustre file system, so no nodes are idle in the cluster. === Greg -- Greg Freemyer Litigation Triage Solutions Specialist http://www.linkedin.com/in/gregfreemyer First 99 Days Litigation White Paper - http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf The Norcross Group The Intersection of Evidence & Technology http://www.norcrossgroup.com _______________________________________________ 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/
