Index upgrade problems after cyrus upgrade

[Adam Tauno Williams]

On Thu, 2011-10-13 at 05:33 +0530, Ramprasad wrote:
> I just upgraded cyrus on a busy Imap server from 2.3.x to 2.4.6 , 
> problem is with lmtp delivery.
> All lmtp deliveries from postfix are hanging forever.
> I think this is due to the "Index upgrade" that is going on .. Is there 
> a way I can speed up the index upgrade
> I have 2000 users and only 200 users index upgrade is complete till now 
> in last 4 hours

Are you letting index reconstructs happen on-the-fly or are you doing a
reconstruct of the mailbox(es).  A reconstruct will rebuild the indexes.

Especially for large mailboxes you want to do those in-advance during
periods of less load.