Date: Mon, 6 Dec 1999 10:38:43 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Ronald F. Guilmette" <rfg@monkeys.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: tmpfs .. ? Message-ID: <199912061838.KAA71233@apollo.backplane.com> References: <21237.944421456@monkeys.com>
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:In message <199912050447.UAA58828@apollo.backplane.com>,
:Matthew Dillon <dillon@apollo.backplane.com> 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
<dillon@backplane.com>
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