Re: Attempting to do a rolling move to 9.2Beta (as a slave) fails

Here's what I'm trying to do in testing 9.2Beta1.

The current configuration is a master and a hot standby at a diverse location for both hot swap and "online" backup.  Both are archived regularly so if something goes south I can recover (to either as a master.)

1. Build 9.2Beta1; all fine.

2. Run a pg_basebackup from the current master machine (running 9.1) to a new directory on the slave machine, using the 9.2Beta1 pg_basebackup executable.

3. Run a pg_upgrade against that from the new binary directory, producing a 9.2Beta1 data store.

4. Attempt to start the result as a SLAVE against the existing 9.1 master.

Is this caused by the version mismatch?

Do I need to run a complete parallel environment instead of trying to attach a 9.2Beta1 slave to an existing 9.1 master?  (and if so, why doesn't the code complain about the mismatch instead of the bogus WAL message?)