upgrading a 2.2.12 murder to 2.3.14

[Gavin Gray]

Quoting Dave McMurtrie <dave64 at andrew.cmu.edu>:


>> 3. As part of our preparation for this work we have been experimenting
>> with cyrus replication. The replication protocol seems pretty solid,
>> however we have some concerns about how to make use of it in our
>> upgrade. We are considering having a replicant machine for each of the
>> new backends. But this makes the migration even slower. In our tests,
>> if we migrate users via xfer to a machine that is doing rolling
>> replication, the replication takes around three times as long to
>> complete as the xfer. Does anyone have any experience of migrating to
>> a replicating environment?
>
> Perhaps consider treating the migration and replication as two separate
> things.  It's not that you have to for technical reasons, but it will
> probably make your life less complicated.  Nothing stops you from
> enabling replication once you're all done with the upgrade.
>

Hi, thanks for getting back to me...

Assuming we do do the migration first, how would you suggest we  
subsequently enable replication? Can we just start the sync_client  
doing rolling replication, or should we do an initial replication of  
all users by running sync_client manually with a list of users?


-- 
Gavin Gray
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The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.