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. Philipp
