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Date:      Mon, 28 Feb 2011 12:26:14 +0000
From:      Chris Rees <utisoft@gmail.com>
To:        Robert Bonomi <bonomi@mail.r-bonomi.com>
Cc:        freebsd-questions@freebsd.org, nr1c0re@gmail.com
Subject:   Re: / file system is full, but du does not show that it's full
Message-ID:  <AANLkTin6En+FhQvqxK6E6YkObvAS+KzC_xoD3DzfJ_wc@mail.gmail.com>
In-Reply-To: <201102281218.p1SCIR87034416@mail.r-bonomi.com>
References:  <AANLkTikyiZD+O6BKCighmuyppo5j2NinzoJE04zW8sXB@mail.gmail.com> <201102281218.p1SCIR87034416@mail.r-bonomi.com>

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On 28 Feb 2011 12:12, "Robert Bonomi" <bonomi@mail.r-bonomi.com> wrote:
>
> > From owner-freebsd-questions@freebsd.org  Mon Feb 28 05:31:46 2011
> > Date: Mon, 28 Feb 2011 14:24:30 +0300
> > From: c0re <nr1c0re@gmail.com>
> > To: Matthew Seaman <m.seaman@infracaninophile.co.uk>
> > Cc: FreeBSD <freebsd-questions@freebsd.org>
> > Subject: Re: / file system is full, but du does not show that it's full
> >
> > 2011/1/6 Matthew Seaman <m.seaman@infracaninophile.co.uk>:
> > > On 06/01/2011 11:26, c0re wrote:
> > >> # df -h
> > >> Filesystem     Size    Used   Avail Capacity  Mounted on
> > >> /dev/ad0s1a    496M    466M   -9.8M   102%    /
> > >>
> > >> So it's full.
> > >>
> > >> But by du it's not appeared to be full
> > >>
> > >>
> > >> # du -hxd 1 /
> > >> 2.0K    /.snap
> > >> 512B    /dev
> > >> 2.0K    /tmp
> > >> 2.0K    /usr
> > >> 2.0K    /var
> > >> 1.9M    /etc
> > >> 2.0K    /cdrom
> > >> 2.0K    /dist
> > >> 1.0M    /bin
> > >> 131M    /boot
> > >>  10M    /lib
> > >> 356K    /libexec
> > >> 2.0K    /media
> > >>  12K    /mnt
> > >> 2.0K    /proc
> > >> 7.2M    /rescue
> > >> 296K    /root
> > >> 4.7M    /sbin
> > >> 4.0K    /lost+found
> > >> 157M    /
> > >>
> > >
> > > Do you have partitions mounted at /tmp, /usr, /var etc?  Does the
> > > output of your du command change if you unmount those partitions? (It
> > > might be an idea to boot into a livefs CD or DVD given that du(1)
lives
> > > in /usr/bin, so a bit tricky to unmount /usr and then run du)
> > >
> > > My guess is that you've at one time created files beneath what is
> > > usually a mount point.  Mounting the partition over them makes those
> > > files inaccessible, but they still take up space on the drive.
> > >
> > >        Cheers,
> > >
> > >        Matthew
> > >
> > > --
> > > Dr Matthew J Seaman MA, D.Phil.                   7 Priory Courtyard
> > >                                                  Flat 3
> > > PGP: http://www.infracaninophile.co.uk/pgpkey     Ramsgate JID:
> > > matthew@infracaninophile.co.uk               Kent, CT11 9PW
> > >
> > >
> >
> > At last I found time to check it. Booted with frenzy life cd, mounted
> > only / partition and saw trash
> > /var/spool. Deleted it and it solved problem.
> > But later was and idea to mount device of / (/dev/da0s1a) as /mnt/root
> > and just delete those files without need of livecd. It works in Linux.
> > But in freebsd i got
> >
> > # mount /dev/da0s1a /mnt/root/
> > mount: /dev/da0s1a : Operation not permitted
> >
> > So only single user mode or live cd could solve it.
>
> *NOT* true.  Stopping any daemons that were using "/var/spooll", and then
> umount(1)-ing it would have done the trick from multi-user mode.
>
>
>

umount /   ???

Chris



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