From owner-freebsd-current  Sat Dec  7 13:38:55 2002
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Date: Sun, 8 Dec 2002 08:38:55 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Robert Watson <rwatson@FreeBSD.ORG>
Cc: Archie Cobbs <archie@dellroad.org>,
	Kirk McKusick <mckusick@beastie.mckusick.com>,
	Julian Elischer <julian@elischer.org>, <freebsd-current@FreeBSD.ORG>,
	Thomas-Henning von Kamptz <tomsoft@FreeBSD.ORG>
Subject: Re: backgroud fsck is still locking up system (fwd)
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On Sat, 7 Dec 2002, Robert Watson wrote:

> On Sun, 8 Dec 2002, Bruce Evans wrote:
> > Er, it should be obvious that growfs can't reasonably work on the mounted
> > partitions.  growfs.1 doesn't exist, but growfs.8 already has the warning
> > ...
>
> Hmm.  I guess one of the interesting questions is: what happened to the
> safety belts?  I would have thought that GEOM would prevent opening the
> partition writable while it was mounted...

The kernel doesn't and shouldn't prevent it for the r/o-mounted case
(since fsck needs to write to the partition of a mounted file system
for at least the case of the root file system mounted r/o), and
apparently growfs doesn't prevent it in ths case either.  There are
lots of safety belts in the kernel for the r/w-mounted case.

Bruce


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