[pybsddb] Snapshotting / replicating bdb

[Jesus Cea]

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Jon Dyte wrote:
> Just to be clear are you saying you do the ZFS clone within a berkely db 
> transaction, or that providing the database is transactional, the ZFS clone 
> can be performed any time and the recovery procedures will guarantee the 
> consistency of the data. I think you mean the latter but I just wanted to be 
> sure.

The second one. I do the snapshoting & cloning via ZFS. Then I do a
Berkeley DB environment recovery over the clone, and now I have a
consistent cloned DB to work with, in seconds and with minimal disk usage.

When done, you delete the clone & snapshot and you are done.

All of this while the main application is in production.

- --
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