Cyrus update - folder issues

[Daniel Bramkamp]

Hi list,

I am experiencing some issues with IMAP folders at a customer site. 
They used to run Cyrus IMAP 2.0.x a while back which got updated to 
2.1.12 or 2.1.13 at some point. The following was added to the 
imapd.conf file when the update took place :

seenstate_db: flat
mboxlist_db: berkeley
duplicate_db: berkeley-nosync

With those settings the system worked fine for quite a while. Last week 
the installation was moved to a new server which now has Cyrus IMAP 
2.2.12 installed. I copied the spool and database directory of the old 
installation to the appropriate locations. After reading the upgrade 
information on the website I tried to update the mailboxes.db to the 
skiplist format which did not work for some reason. Either it did 
complain about not being able to find the database or it converted it 
(after starting and stopping Cyrus once) and I got a lot of DB errors 
after starting up Cyrus with the new DB. I put the above directives 
back into the config file, copied the imap database directory again and 
restarted Cyrus. At that point I could access the IMAP server via IMP 
(a webmail client)
but some folders were empty. After running reconstruct everything 
seemed fine at first. However, the IMAP folders are not displayed 
correctly from time to time, they just vanish from the list of folders. 
Also IMP complains about not being able to create folders for sent-mail 
and trash. I tried to delete mailboxes, recreate them, copy the spool 
directory back in and use reconstruct -f but that did not help either. 
I could not find anything weird in the logfiles either.

Can anyone help me out on this please ?

Thanks in advance
-- 
Daniel Bramkamp

team! datentechnik GmbH & Co.KG
Werner von Siemens Straße 12a
49124 Georgsmarienhütte
Tel.: 05401-8226-0
Fax : 05401-8226-20
eMail: bramkamp at team-datentechnik.de