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. > >