Date: Wed, 17 Dec 2008 13:53:53 -0500 (EST) From: vogelke+software@pobox.com (Karl Vogel) To: freebsd-questions@freebsd.org Subject: Re: How to find files that are eating up disk space Message-ID: <20081217185356.25025B7BA@kev.msw.wpafb.af.mil> In-Reply-To: <283ACBF4-8227-4A24-9E17-80A17CA2A098@identry.com> (message from John Almberg on Wed, 17 Dec 2008 12:16:57 -0500)
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>> On Wed, 17 Dec 2008 12:16:57 -0500,
>> John Almberg <jalmberg@identry.com> said:
J> Is there a command line tool that will help me figure out where the [disk
J> space] problem is?
I run a script every night to handle this. We have a few business
divisions, and each division has several groups sharing files
via Samba. Each group likes its own space with permissions that
prevent file diddling by other groups. For example, division 3 is
on drive /rd04, and has group directories /rd04/div3/engineering,
/rd04/div3/finance, and /rd04/div3/marketing.
/etc/periodic/daily/315.dirsize:
#!/bin/ksh
# dirsize: see how big each top-level group directory is.
PATH=/bin:/usr/bin
BLOCKSIZE=1m
BLOCK_SIZE=1048576
export PATH BLOCKSIZE BLOCK_SIZE
umask 022
tag=`basename $0`
host=`hostname | cut -f1 -d.`
logmsg () {
logger -t "$tag" "$@"
}
# Check group areas on each drive.
list='
/rd01/div1
/rd02/logs
/rd03/div2
/rd04/div3
'
(
for dir in $list
do
logmsg checking size of $dir
find $dir -type d -maxdepth 1 -print |
tail +2 | sort | xargs du -s
echo
done
) | mailx -s "$tag: directory sizes on $host" root
logmsg done
exit 0
J> Even better, is there a way to proactively monitor the file system, so I
J> can fix problems before I start getting 'out of disk space' errors?
This script is run hourly to tell me if we completely run out of room
on something like /var or one of the user drives. I run it on BSD and
Solaris boxes, so I try to avoid GNU or OS dependencies.
/usr/local/cron/checkdrives:
#!/bin/ksh
# checkdrives: send mail if a filesystem gets too full
PATH=/bin:/usr/bin
export PATH
# Portability stuff here.
case "`uname -s`" in
SunOS) DF='/usr/xpg4/bin/df -F ufs -k' ;;
FreeBSD) DF='/bin/df -t ufs -k' ;;
*) DF='df' ;;
esac
# "Too full" means 99% and less than 100 Mbytes available.
str=`$DF | # Check filesystem size ...
tail +2 | # ... skip the header ...
tr -d '%' | # ... kill the percent sign ...
awk '$4 < 100000 && \
$5 >= 99 {print $6}'` # ... and print the filesystem.
case "X$str" in
X) ;;
*) $DF $str | mailx -s 'Filesystem getting full' root ;;
esac
exit 0
--
Karl Vogel I don't speak for the USAF or my company
It only rains straight down. God doesn't do windows. --Steven Wright
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