Am Dienstag 16 Juni 2009 15:58:37 schrieb Philipp Riegger: > On Tue, 2009-06-16 at 16:45 +0300, Daniel Iliev wrote: > > DRBD is HA solution which is achieved by switching the role of the > > nodes in case the "active node" goes offline. I think DRBD is not meant > > for the schema OP has described, because only the "active node" is > > accessible via FS. DRBD works between the FS and block device layers. > > It catches the FS writes from the active node and sends them over the > > network. DRBD on the backup node receives those and replicates them > > directly to the disk driver. Thus you can't have mounted FS on the > > backup node. If the active node goes offline, the backup node takes > > over which means DRBD switches roles and the FS has to be mounted > > afterwards. > > But that might be a good solution with 2.6.30, NFS and FSCACHE. > > Another solution would be to use ndb (network block devices), dm-raid > and a cluster filesystem.
And finally, there's OpenAFS. Not really RAID, but maybe sufficient.
Bye...
Dirk
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