rehash seems not to work

[peter pilsl]

I'm currently upgrading from 2.0.16 to 2.2

To use the improved directory hashing scheme I run "rehash full".

This created the new mail-subfolder in my spool-directory and the subfolders A-Z 
(uppercase) and a  stage. - folder.  Nothing more !!! No entries in none of 
these subfolders. The tool takes about one second to run. I've got about 500 
users on my installation and gigs of maildata.

When I now try to login to my imap-server I get the following error in the logs:



Jan 10 17:43:32 ihf2 cyrus/imap[28092]: login: server.local [192.168.0.1] peter 
plaintext User logged in
Jan 10 17:43:32 ihf2 cyrus/imap[28092]: IOERROR: opening 
/data/cyrus/spool/mail/p/user/peter/cyrus.header: No such file or directory

Two things hit my eye: first : imap expects a lowercase folder below mail !! 
rehash gave me an uppercase.

second : imap expects another subfolder below every letter for each user. rehash 
obviously did not create that.


Two questions:

first : Am I right to expect that rehash should create the 
/sppol/mail/letter/username - structure and put the cyrus.headers-files there 
but keep the rest in the /spool/user/username - folder?

second : is there any improved rehash-script. I found several discussion on 
rehash-problems on the web, but none was clear enough to tell if I experience 
the same problem and what the solution actually would be.

third (uups) : it seems that I could disable hashimapspool on my installation. 
Would this propably solve my problem? and how much would it affect performance. 
I really have got a lot of users and things should be going fast. 500 users in a 
medium-sized office that really use their emails the whole day.

thnx,
peter



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