thanks for the prompt replies. to recap, i have -Berkeley DB -External Mount -something that i'm not too sure of :)
as i see it, i can use External mount to mount berkeley Db. that will then give me a nonundo, nonversioning db.. right?
Well, I know you're using ZEO with a FileStorage as your "main" storage, so you'll need to mount a ClientStorage which talks to a ZEO server backed by a nonundo db. The ZEO docs give some info about using a single ZEO server to serve two databases (see the -S switch to the ZEO 'start' command). So basically, you need do do something like: Client Client Client | | | | | | | | | Zeo Storage Server / \ nonundostorage (mounted) filestorage (main) Where all clients have a "main" database that is the ZSS' filestorage and all clients additionally have a ClientStorage mounted (via exmount or another way) that points to the ZSS' nonundo storage. An alternate way is: Client Client Client | | | | | | | | | Zeo Storage Server | | nonundostorage (main) In this case, all clients use a "main" database that is nonundoing, so you can put the external data container right in there without worrying about any mounting.
if i use FileStorage with ExternalMount, it'll be just another ZODB. i hope i'm right.
Yes.
if i want to use it across ZEO Clients, i *must* use ZEO.ClientStorage. correct me if i'm wrong, please.
Yes.
to test a simple setup, i tried FileStorage with External Mount. and i encountered a little problem. here's what i have -ExternalMount -External Method[1]
when i tried adding an ExternalMount, i got this[2] traceback. help?
I think this exposes an error in Mount.py. :-( Is there anything in your debug log?
p/s - what about storing CoreSessionTracking data in RDB?
It's my hope that people will write session data managers that do just this. The session tracking stuff is extensible. As a matter of fact, I don't think it would be too hard to adapt the existing FSSession and SQLSession products to be session data managers.
-- [1] ---ExtDB.py
import ZODB from ZODB.FileStorage import FileStorage
def createDB(): return ZODB.DB(FileStorage('/home/kdie/Zope/var/ext.fs')) ---- [2] <P><STRONG>NameError</STRONG></P>
Sorry, a Zope error occurred.<p> <!-- Traceback (innermost last): File /home/kdie/Zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /home/kdie/Zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/kdie/Zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook File /home/kdie/Zope/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/kdie/Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_addExternalMount) File /home/kdie/Zope/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_addExternalMount) File /home/kdie/Zope/lib/python/Products/ExternalMount/ExternalMount.py, line 112, in manage_addExternalMount (Object: ApplicationDefaultPermissions) File /home/kdie/Zope/lib/python/ZODB/Mount.py, line 279, in _test (Object: A) File /home/kdie/Zope/lib/python/ZODB/Mount.py, line 246, in _getOrOpenObject (Object: A) NameError: mcc
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