[Dovecot] prevent dovecot from modifying maildirs

[Felix Rubio Dalmau]

Great!

	Thank you very much, Timo!

	Felix


On Sunday 11 August 2013 22:49:43 Timo Sirainen wrote:
> On Fri, 2013-08-09 at 21:12 +0200, Felix Rubio Dalmau wrote:
> > Michael, Charles,
> > 
> > 	thank you for your comments. I had already seen the wikipedia entries about ZFS, but when I have performed my tests, consisting in: generate a program that writes a 100 MB file to disk and perform the snapshot during the file is being written. Obviously the snapshot shows a view of the file with the information and size it had at the time of the snapshot... so I get a portion of it.
> > 
> > 	In order to save space I prefer no to have such half-files (mails) , and it is for this reason that I am asking if there is any way to prevent this.
> 
> If you don't disable mail_fsync, you won't get partially written mails.
> And I'm not sure if you get them even if you do disable mail_fsync. The
> mails are first written to temporary files, fsynced, then renamed to the
> final name. So you might end up with some temporary files, but they
> won't be visible and they'll be deleted automatically.
> 
> The above applies to all mailbox formats except mbox.
> 
>