Re: [Dovecot] Maybe wrong quota recalculation behaviour on overquota delivery try
On Fri, 2010-09-03 at 08:19 +0200, Luca Palazzo wrote: > Hi Timo, > thanks you for reply. > I'm pretty sure you are right. Quota recalculation based on Maildir++ > standard is too I/O intensive for our system because we have lot of > maildirs migrated from old system. Mail files are missing often size in > filename so now I understand why so much stat calls. > Is there any script/util in dovecot to fix filenames? The problem with changing filenames is that it changes also the maildir base filename. So that requires changing also dovecot-uidlist. But it gets worse if you use base filenames as POP3 UIDLs, then a change in it causes POP3 clients to redownload those mails.
Re: [Dovecot] Maybe wrong quota recalculation behaviour on overquota delivery try
Hi Timo, thanks you for reply. I'm pretty sure you are right. Quota recalculation based on Maildir++ standard is too I/O intensive for our system because we have lot of maildirs migrated from old system. Mail files are missing often size in filename so now I understand why so much stat calls. Is there any script/util in dovecot to fix filenames? Thank you. Luca On 09/02/2010 07:32 PM, Timo Sirainen wrote: On Thu, 2010-09-02 at 19:14 +0200, Luca Palazzo wrote: Looking at mbox servers log nothing seem to happen, but stracing lmtp process we can see stat system calls to all Maildir files, as if dovecot was recalculating quota and regenerating maildirsize file. It happens always when LMTP tries to deliver a mail to an overquota account. Yes, that's pretty much how Maildir++ quota works. If maildirsize file doesn't only contain a single line showing the quota, or if it's older than 15 minutes, it's recalculated. The maildir filenames really should have ,S=size in the filenames, otherwise quota recalculation is horribly slow. Maybe you should switch to dict quota with file backend. http://wiki2.dovecot.org/Quota/Dict
Re: [Dovecot] Maybe wrong quota recalculation behaviour on overquota delivery try
On Thu, 2010-09-02 at 19:14 +0200, Luca Palazzo wrote: > > Looking at mbox servers log nothing seem to happen, but stracing lmtp > process we can see stat system calls to all Maildir files, as if > dovecot > was recalculating quota and regenerating maildirsize file. > > It happens always when LMTP tries to deliver a mail to an overquota > account. Yes, that's pretty much how Maildir++ quota works. If maildirsize file doesn't only contain a single line showing the quota, or if it's older than 15 minutes, it's recalculated. The maildir filenames really should have ,S=size in the filenames, otherwise quota recalculation is horribly slow. Maybe you should switch to dict quota with file backend. http://wiki2.dovecot.org/Quota/Dict
