On Tue, May 02, 2006 at 10:23:40AM -0400, Tres Seaver wrote:
I would look for a replication strategy to create your "intermediate" storage server: the setup you are trying is not supported by the current ZEO setup. Such strategies include:
- Zope Corp's "Zope Replication Services" product, which keeps the "secondary" storage servers synchronized with the primary via the "spread" toolkit.
- DirectoryStorage can be used to do replication via rsync.
... but you can't use a DirectoryStorage replica as a "hot" or "warm" backup. DirectoryStorage replicas are pulled from the master storage, and no storage process can be using the replica storage while this pull is happening - not even in read-only mode. This is documented at http://dirstorage.sourceforge.net/replica.html For more background discussion, see these threads - why hot failover won't work: http://sourceforge.net/mailarchive/forum.php?thread_id=4906719&forum_id=9987 some talk about cold failover: http://sourceforge.net/mailarchive/forum.php?thread_id=7828511&forum_id=9987 -- Paul Winkler http://www.slinkp.com