postfix-users seems to be a subscription only list. I'd recommend incorporating TDMA <http://tdma.sf.net/> to allow for easy discussion by outsiders Andrew Morton (of ext3 fame) had sent this message to postfix-users list I am forwarding so that Wietse can hopefully provide the definitive answer to the question Andrew Morton/Stephen Tweedie seek ----- Forwarded message from Andrew Morton <akpm@zip.com.au> ----- Message-ID: <3C5F7C79.51EC3341@zip.com.au> From: Andrew Morton <akpm@zip.com.au> X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.18-pre7 i686) To: Yusuf Goolamabbas <yusufg@outblaze.com> Cc: Wietse Venema <wietse@porcupine.org>, adi <adi@acme.com>, ext3-users@redhat.com, postfix-users@postfix.org Subject: Re: ext3 and chattr +S on postfix spools Date: Mon, 04 Feb 2002 22:32:25 -0800 Yusuf Goolamabbas wrote: > > Maybe there is an opening for "mtafs" :) which would have the semantics > which the MTA authors want and reasonable features which are useful to > others [journalling,speed,io-clustering,etc] Queston is: what do the MTA authors want? We occasionally see chunks of fuzzily-informed mud come flying over the wall from MTA lists, but I've yet to see a neat description of the requirements. I'd very much like to see such a description, and to have such a discussion, because we should have a good fit here. > The question is what precise semantics of ffs does ext3 and > ffs/softupdate not provide which makes running a MTA on any recent OS > similar to playing russian roulette with mail One man's `semantics' is another man's `side-effect' :) We've never had an objective of retaining side-effect compatibility with ffs. In ext3, if you want something sync'ed, you sync it. Now we do have a useful side-effect, and that is that if you sync something, you've just synced everything which preceded it. That's not a thing which is going to change in the 2.4 kernel timeframe, and I doubt that it'll ever change, given that it's the most efficient way of handling any pending write data. Still. Please: what are the requirements for MTAs, and for postfix? _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users ----- End forwarded message ----- -- Yusuf Goolamabbas yusufg@outblaze.com
