pkg/32738: db4 upgrade to 4.4 breaks 4.3-based apps like cyrus-imapd

OK, some more info:

default cyrus-imapd config has only a couple of berkeley DB
files,
they're all in /var/imap.
But there's also some weird interaction between berkeley DB
and the
cyrus-unique skiplist database used for other databases.

to convert the berkeley DBs:
from 4.2 to 4.3 and 4.3 to 4.4, only the log file format
changed, so you
only need to run 'db4_recover -h /var/imap' with the *OLD
db4 package*.

Then for the skiplist files, it looks like you need to move
/var/imap/db
out of the way, recreate it (mode 0700, owner cyrus:mail).

-- 
==John Kohl <jtkkolvir.arlington.ma.us>,
<john_kohlalum.mit.edu>
Home page: <http://home.c
omcast.net/~john.kohl/>

>>>>> "John" == John Kohl
<jtkkolvir.arlington.ma.us> writes:

John> OK, some more info:

scratch that, turns out that tls_sessions.db and deliver.db
just don't
want to work even with recovery options reset.
db4_dump/db4_load don't help either.

Nuking them seems to work OK.

-- 
==John Kohl <jtkkolvir.arlington.ma.us>,
<john_kohlalum.mit.edu>
Home page: <http://home.c
omcast.net/~john.kohl/>