[Dovecot] v1.1.alpha4 released / about dbox

[Timo Sirainen]

On Sat, 2007-09-08 at 15:04 +0200, Farkas Levente wrote:
> Timo Sirainen wrote:
> > But since there's still a chance that index files could break (although
> > v1.1 tries harder than v1.0 to fix problems), it would be nice if the
> > flags/keywords were written to metadata block once in a while. So if the
> > index files are lost, flag changes wouldn't be completely lost. Metadata
> > updates of course use disk I/O so they shouldn't be done too often.
> > 
> > I was thinking that the metadata could be updated:
> > 
> > - if IMAP connection has been idling for 4 hours (not changing flags)
> > - when closing mailbox and there are changes older than 4h
> > - immediately if there are changes older than 24h (whenever mailbox is
> > being synced, e.g. SELECT/NOOP/STATUS)
> > 
> > Or something like that. Those rules can of course be changed, but I'm
> > not sure if I should bother making them configurable from dovecot.conf.
> > There are already too many settings.
> 
> what about a maintanance srcipt/daemon which can be run from cron and
> every sysadm can decided when and how often he'd like to update metadatas?

That would require keeping the "<mailbox>: <last updated>" information
in some central database. Otherwise if you had lots of mailboxes it
would waste a lot of disk I/O in such run. And I'm not really interested
in creating such a database at least yet. :)

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