Upgrading to 3.2 from 3.1

[Daniel Hoffend]

Hi Mike

>I had the same experience. The issues seemed to be related to the 
>upgrade of Cyrus IMAP from 2.4 to the Kolab only 2.5. Every folder 
>access seemed to trigger a Cyrus index rebuild which impacted 
>performance so much that Roundcube continuously timed out and was 
>unusable, and this was on my personal server with one user on it. Any 
>thought of doing a production system was pointless. I had to revert 
>back to 3.1 and have been running it ever since.
I think I had similar issues when I tried to upgrade from 3.1 to 3.2 a 
half year ago and reverted back to Kolab 3.1. I know that Jereon is also 
working on Cyrus (http://git.cyrusimap.org/cyrus-imapd/) but the 
official cyrus project page states that cyrus imapd 2.4 is the current 
stable version. That's where I start to wonder why or if I should 
upgrade to Cyrus 2.5 when 2.4 just runs fine.

Maybe it's just our impatience and the io power needed to convert all 
those spool folders and re-index them where it's needed and when they 
getting accessed or it's just the strange feeling using a non-production 
labeled cyrus version for our (community and personal production) mail 
servers.

>I was going to try a 3.1 to 3.3 upgrade sometime in the next few weeks 
>to see if it was any better. If it isn't I am probably going to be 
>forced to look at other products, which would be very disappointing.
I'm currently looking into upgrading to 3.3 (from 3.1) as well. Right 
now I’m doing test installations, test features and report or fix 
package bugs. As soon as I'm happy with the general installation I’m 
likely cloning my mail system and it's storage and trying an upgrade. 
But I haven't yet decided if I should stay with the cyrus 2.4 provided 
by Kolab 3.1 (the kolab xml format and other stuff hasn't changed so I 
don't see an issue) or jump on the train and upgrade to Cyrus 2.5.

I know that Cyrus 2.5 might offer various improvements Jereon listed in 
his 3.2 announce mail 
(http://lists.kolab.org/pipermail/announce/2014/000133.html) but still 
... just my 2 cents.

Regards

Daniel
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