Date: Fri, 12 Feb 2010 17:39:44 -0300 From: Fernan Aguero <fernan.aguero@gmail.com> To: freebsd-questions@freebsd.org Subject: discrepancies in disk usage between df and du Message-ID: <520894aa1002121239s2148ed6dudeae8055fe337d02@mail.gmail.com>
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Hi, I have a box (7.2-STABLE, amd64) that is currently showing some disk usage problems. It all started with apache generating huge logs from one of the mod_perl applications that is undergoing testing. So the /var partition was getting full. We removed all logs that were causing the problem, but even though du shows some 700 Mb of usage, df shows that the disk is full (-1.5 Gb): [fernan@omega ~] sudo du -hc -d1 /var/ Password: 2.0K /var/.snap 423M /var/account 6.0K /var/at 2.0K /var/audit 18K /var/backups 4.0K /var/crash 6.0K /var/cron 53M /var/db 2.0K /var/empty 2.0K /var/heimdal 219M /var/log 14M /var/mail 4.0K /var/msgs 48K /var/named 2.0K /var/preserve 44K /var/run 2.0K /var/rwho 16K /var/spool 76K /var/tmp 24K /var/yp 2.0K /var/games 710M /var/ 710M total [fernan@omega ~] df -h Filesystem Size Used Avail Capacity Mounted on /dev/mirror/gm0s1f 18G 18G -1.5G 109% /var I've been googling around, and I understand why df and du might be reporting disk usage differently. However, I can't solve this issue and reclaim unused disk space ... applications (apache, mod_perl) are prevented to write to /var and this is causing us problems. We've already tried rebooting the box, restarting the syslog, newsyslog daemons, to no avail. df keeps showing >100% disk usage (-1.5 Gb of remaining disk space) in all cases. We've even rebooted the box with all apache instances turned off in rc.conf ... i.e. without any but the most basic services running (sshd) ... This box is essentially a web server, no other services are being run. Any suggestions as to what to try next? Thanks in advance, -- fernan
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