Date: Mon, 01 Jun 2009 09:03:25 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Erik Norgaard <norgaard@locolomo.org> Cc: questions@freebsd.org Subject: Re: migrating berkeley DBs (4.3 to 4.6) Message-ID: <4A238B4D.9050801@infracaninophile.co.uk> In-Reply-To: <4A2284D6.2080304@locolomo.org> References: <4A2284D6.2080304@locolomo.org>
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Erik Norgaard wrote:
> I have cyrus-imapd 2.3 with Berkeley DB 4.3 and openldap also compiled
> with BDB 4.3.
>=20
> Now, openldap won't build with 4.3 and defaults to 4.6 so I need to
> migrate my data, and I would like to migrate my cyrus-imapd also to a
> newer version of BDB.
>=20
> Are there any tools or tricks for doing this?
>=20
> The BDB v4.4 port refers to a compatibility page maintained at
> sleepycat, but this is now redirected to Oracle and I find no such
> information. Any page listing the db file compatibility?
Yes -- I believe BDB 4.3 and 4.6 aren't binary compatible it seems.
For the special case of cyrus-imapd you should use cvt_cyrusdb(8) to
dump out the contents of cyrus DB files to ascii, update everything, and
then use cvt_cyrusdb to reload the data.
As I recall, the real biggie for this is maintaining the 'seen' state.
I think just about anything else can be rebuilt from the mailbox data
itself by running a reconstruct. However, on a large mailspool
reconstruct will take a while, so dump'n'reload would be preferable.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. Flat 3
7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW, UK
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