Date: Mon, 19 Aug 2002 10:12:40 -0500 From: "Jaime Bozza" <jbozza@thinkburst.com> To: "'Michael Lucas'" <mwlucas@blackhelicopters.org>, =?iso-8859-1?Q?'Aur=E9lien_Nephtali'?= <aurelien.nephtali@wanadoo.fr> Cc: <stable@FreeBSD.ORG> Subject: RE: root (/) not soft-updates by default ? Message-ID: <022c01c24792$dc0b98a0$6401010a@bozza> In-Reply-To: <20020819105452.A14530@blackhelicopters.org>
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Following your line of thought, why then would "we" ship systems that,
by default, have softupdates enabled for all other partitions? (/usr,
/var, /usr/home, etc)
In file /usr/src/release/sysinstall/label.c, function new_part():
ret->soft =3D strcmp(mpoint, "/") ? 1 : 0;
Basically, softupdates are enabled for everything *but* the root
partition.
(To Aur=E9lien) The real reason (as I understand it from -stable
discussion) root doesn't have softupdates turned on by default is that
during installation, the root system can fill up since softupdates waits
from releasing space from temporary files.
I personally had a problem with running a recent 4.X release install and
turning on softupdates for root ('/') without thinking about it and
having the system say that there was no space on the drive during
installation.
Outside of the warnings regarding IDE and write-caching, you can turn on
softupdates for root after installation with the tunefs command.
(You'll need to do it from single-user)
Jaime Bozza
-----Original Message-----
From: owner-freebsd-stable@FreeBSD.ORG
[mailto:owner-freebsd-stable@FreeBSD.ORG] On Behalf Of Michael Lucas
Sent: Monday, August 19, 2002 9:55 AM
To: Aur=E9lien Nephtali
Cc: stable@FreeBSD.ORG
Subject: Re: root (/) not soft-updates by default ?
Hello,
Soft updates does not work well with IDE controllers with write
caching enabled; you can cause data loss.
Most IDE controllers ship with write caching enabled.
We won't, by default, ship systems which have an unacceptable risk of
data loss. :-)
On Mon, Aug 19, 2002 at 04:49:28PM +0200, Aur=E9lien Nephtali wrote:
> Hello,
>=20
> What is the reason that the mount point (by default, /) hasn't the
flag
> for soft-updates by default (during the installation), can I set it
> without data lost ?
>=20
> -- Aur=E9lien
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