Restoring Mailboxes

[Andrew Morgan]

On Wed, 19 Apr 2006, Dr. Harry Knitter wrote:

> Am Mittwoch, 19. April 2006 15:27 schrieb jkp at solnet.homeip.net:
>>> Hello,
>>>
>>> we have a problem to restore Cyrus mailboxes from an installation of SuSE
>>> 9.2
>>> which we want to transfer do a SuSE 10.0 installation.
>>> We have backuped the directories /var/lib/imap and /var/spool/imap and
>>> copied
>>> them to the new installation.
>>> after restarting Cyrus syslog was flooded with messages
>>>
>>> <snip>
>>>
>>
>> Seems you have a mismatch in version numbers between your old Berkeley DB4
>> installation and your new installation. The problem is that your old .db
>> files (in db4.xx) is not compatible with your new Berkeley installation.
>>
>> Albeit "cumbersome" you can fix it if you still have the old server
>> available where you need to run cvt_cyrusdb on each file being stored in
>> Berkeley database format. The easiest way to find those files is probably
>> just to run a
>>
>>   find /var/lib/imap |xargs file|grep -i berkeley
>>
>> And then manually convert those files to flat format doing:
>>
>>   cvt_cyrusdb /your/berkeley_db4.db berkeley /your/berkeley_flatfile flat
>>
>> Then copy the files to your new installation and covert them back to
>> Berkeley with your new berkeley db4 format (cumbersome but needed step)
>>
>>
>> Good luck,
>>   Best regards,
>>      Jesper K. Pedersen
>
> Doesn´t sound very good.
> The old server does not exist anymore.
> On the other side I have a server that was upgraded and seems to use the old
> file format. How can I find out what version of Berkeley DB this cyrus is
> using?
> Or are there any tools to do this without cyrus?

You could also try deleting the files in the configdirectory/db/ directory 
(make a copy to be safe).  Those are the transaction logs, etc, for 
BerkeleyDB and skiplist.  They should be safe to delete because the actual 
information is in the mailboxes.db file.

 	Andy