free space showing wrong; fsck doesn't help
Adam Smith
adam at internode.com.au
Mon May 23 06:31:29 PDT 2005
On Mon, May 23, 2005 at 09:26:25AM -0400, Jerry McAllister said:
> >
> > I have a partition showing the wrong free disk space on FreeBSD 5.3:
> >
> > $ uname -a
> > FreeBSD nautilus.bugman.cx 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Nov 5 04:19:18 UTC 2004 root at harlow.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
> >
> > [adam at nautilus /home/adam]$ df -h
> > Filesystem Size Used Avail Capacity Mounted on
> > /dev/ad0s1a 248M 46M 182M 20% /
> > devfs 1.0K 1.0K 0B 100% /dev
> > /dev/ad0s1e 248M 224K 228M 0% /tmp
> > /dev/ad0s1f 34G 6.7G 25G 21% /usr
> > /dev/ad0s1d 248M 37M 191M 16% /var
> > /dev/ad2s1d 180G 168G -2.4G 101% /data
> > devfs 1.0K 1.0K 0B 100% /var/named/dev
> >
> > Notice the /data partition....
> >
> > Used and Size don't mathematically calculate. It's causing all sorts of
> > errors when programs try and write to the disk...
>
> Please check the archives and the handook regarding system reserved
> space on file systems. This has been covered so many times it makes
> my carpal tunnel ache just to think about typing stuff about it again.
Sorry, but that's what the FreeBSD-questions list is for :) I did Google
it, but turned up no such luck.
And I completely understand the ache :) If it's something that's been
covered so many times, maybe it's something that needs to be better handled
(detected, reported) by the OS in the first instance.
I'll be off now to check it out. Thanks for the reply!
> Briefly, the system reserves a portion - 8% by default - on a file
> system to deal with possibilities of needing cleanup and operating space
> if a file system fills up. The per cent is settable, but 8 has worked
> well and has become the default.
Cheers,
--
Adam Smith
Internode : http://www.internode.on.net
Phone : (08) 8228 2999
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