Index upgrade problems after cyrus upgrade

[Bron Gondwana]

On Thu, Oct 13, 2011 at 07:00:42AM +0530, Ramprasad wrote:
> On 10/13/2011 6:39 AM, Adam Tauno Williams wrote:
> > 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.
> 
> I just sent a mail to all mailboxes , so lmtp delivery will do a Index 
> upgrade.
> Reconstructing will be much heavier , I think.
> 
> Is there a way I can do a Index-upgrade only ?
> 
> Also I have a few more servers to upgrade .. but if this is going to 
> take so long , upgrade may not be possible. Only if I could upgrade the 
> Index before really upgrading cyrus then this would work

Actually, reconstruct isn't much heavier.

Bloody 2.4.6, it's half a year old now.  There are quite a few known bugs
solved since, but your upgrade cost isn't one of them.  The only real
way to do save the upgrade cost would be a delayed rebuild, which is...
tricky.

Bron.