From owner-freebsd-hackers Mon Dec 6 11:13: 0 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 8CAE21555F for ; Mon, 6 Dec 1999 11:12:39 -0800 (PST) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id KAA71233; Mon, 6 Dec 1999 10:38:43 -0800 (PST) (envelope-from dillon) Date: Mon, 6 Dec 1999 10:38:43 -0800 (PST) From: Matthew Dillon Message-Id: <199912061838.KAA71233@apollo.backplane.com> To: "Ronald F. Guilmette" Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: tmpfs .. ? References: <21237.944421456@monkeys.com> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :In message <199912050447.UAA58828@apollo.backplane.com>, :Matthew Dillon wrote: : :> Mail queue files are persistant enough (upwards of 5 days if a destination :> is down) that you run a real risk of losing something important if :> you crash and wipe. I would not use MFS at all and I would only use VN :> with persistant store, but the performance is going to be similar to :> using a normal filesystem so it may not be worth doing. : :Yea, someone else I was talking with about this said the same thing. : :I just can't get over the nagging feeling that (for the mail spool :directory) there ought to be something that is ultra-super-deluxe :fast that I should be using. :-) : :> Normal :> filesystems with softupdates turned on make pretty good mail spools though : :OK, I've seen several mentions now of `softupdates', and I think that I :have a general (vague?) notion of what `softupdates' is all about, but :allow me to disaply my ignorance one more time and ask which man page :(or document) I should be looking at to learn all of the specifics :regarding `softupdates'. (I looked at `man tunefs' and I don't see :nuttin' there, so where exactly is/are `softupdates' documented?) Softupdates requires a little kernel hacking. cd /usr/src/sys/ufs/ffs read the README.softupdates file in that directory. Don't worry about Kirk's license until you actually decide you intend to use it in production on a commercial system. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message