migration to 3.0 and virtdomains

[Ede Wolf]

Hello,

I am in the progress of upgrading from 2.5.10 to 3.0.11 and have a 
question regarding the virtdomains: setting, that for the sake of 
calendaring has to change from off (or rather unspecified) to userid and 
it's implications on the migration path wise.

Until now, the mailboxes where located below

../mail/X/user/mary, with "X" of course being an arbitrary letter.

Now, the mailboxes are located below

../mail/domain/X/example.com/Y/user/mary

At least newly created ones. Technically, there is of course no problem 
of copying/syncing the old mailboxes below the example.com directory, 
but cyrus stores a lot of additional information in databases below 
$configdirectory and I am not sure, how the changed paths of the 
mailboxes will affect the data, that is stored within the likes of 
mailboxes.db, annotations.db, *.seen and what else lingers around there.

Additionally, $configdirectory  and $partition-default had to change 
their respective path, too. But since those are configurable in 
imapd.conf, until now I am not worried about this.

So I am wondering, is there anything I should be aware of? Or will 
reconstruct magically take care of all this? Any dos or donts? Any 
special procedure or precautions required when moving mailboxes below a 
domain structure?

Thanks for any clues

Ede