dovecot - Oct 2005 - Large IMAP operations tend to timeout and cause problems?

Hello all!

I have moved from Courier-IMAP to Dovecot some month ago. It is quite 
stable on everyday use (1.0alpha4) but it has constant problems with 
large IMAP/SSL operations. We use Maildir format.

For example if I select 400 messages, mark them deleted and use "purge 
command" in Thunderbird (to actually delete them) TB starts to do 
something and runs and runs and runs....Then I get script timed out 
errror and I have to restart TB. That never happened with Courier-Imap.
Same thing happens for example moving 1000msgs to another folder or 
something like that.

Another thing is still that from time to time dovecot indexes get 
corrupted and users can't access some folders. Then I have to delete 
dovecot* in that Maildir folder and it works again.

Any thoughts on that please?

BR,
Alen

Hi, 
> For example if I select 400 messages, mark them deleted and use "purge
> command" in Thunderbird (to actually delete them) TB starts to do 
> something and runs and runs and runs....Then I get script timed out 
> errror and I have to restart TB. That never happened with Courier-Imap.
> Same thing happens for example moving 1000msgs to another folder or 
> something like that.
> 
> Another thing is still that from time to time dovecot indexes get 
> corrupted and users can't access some folders. Then I have to delete 
> dovecot* in that Maildir folder and it works again.
Unfortunately no solution, but just want to say we see some of these problems
also. There definately still are index corruption bugs, causing different
types of problems. We have recently started using memory indexes to see if
it really is dovecot, and all problems with customers went away. Ofcourse
this isnt a definate solution, we really want to have normal indexes working
again :) It may be related to accessing it at the same time from different
clients. 

I havent seen any problems recently with large mailboxes, but I have in the
past so i wouldnt be surprised if there are still issues there. 

This is alpha3, indexes on local disk. (when we're not using memory
indexes).

Cor

On Thu, 2005-10-20 at 10:54 +0200, Alen Salamun wrote:
> Hello all!
> 
> I have moved from Courier-IMAP to Dovecot some month ago. It is quite 
> stable on everyday use (1.0alpha4) but it has constant problems with 
> large IMAP/SSL operations. We use Maildir format.
> 
> For example if I select 400 messages, mark them deleted and use "purge
> command" in Thunderbird (to actually delete them) TB starts to do 
> something and runs and runs and runs....Then I get script timed out 
> errror and I have to restart TB. That never happened with Courier-Imap.
> Same thing happens for example moving 1000msgs to another folder or 
> something like that.
So it's always about deleting messages from one mailbox?

And you have noticed this with the alpha4 pre-release too? Since it had
one change that could have been related to this.
> Another thing is still that from time to time dovecot indexes get 
> corrupted and users can't access some folders. Then I have to delete 
> dovecot* in that Maildir folder and it works again.
Even if there are errors, Dovecot should usually fix the indexes itself
without having to delete them manually. What errors exactly do you get?
What filesystem do you use?
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