How to safely upgrade 6.2.0.2 to newest stable?

[Daniel Shahaf]

Nice mail --- should be transformed into docs/ if it isn't already?

Sebastian Spaeth wrote on Fri, Jan 06, 2012 at 13:47:23 +0100:
> On Thu, 5 Jan 2012 19:13:53 -0800 (PST), chris coleman wrote:
> > Concerned about data loss.  This is a production box with ~80GB of email on there.  Can have only about 1-2 hours downtime per night.
> > 1) What's the newest stable version ?
> 
> 6.4.4 which should work fine for IMAP<->Maildir, but has been reported
> to be flakey with IMAP<->IMAP.
> 
> > 2) What's the safe way to upgrade from 6.2.0.2 to the newest stable?
> 
> 1) Sync to make sure things are reasonably similar
> 2) Drop in the latest OLI code
> 3) Change the account section to status_backend = sqlite
> 4) A new sync will convert your plain text cache to an sqlite cache (but
> leave the old plain text cache around for easy reverting)
>    This should be quick and not involve any mail up/downloading.
> 5) See if it works :-)
> 6a) If it does not work, go back to the old version or set
>     status_backend=plain
> 6b) Or once you are sure it works, you can delete the
> .offlineimap/Account-foo/LocalStatus folder (the new cache will be in
> the LocalStatus-sqlite folder)
> 
> HTH
> Sebastian



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