[PLUG] Debian df command reports wrong usage on root partition

Lee Marzke <lee@marzke.net> · 2006年8月09日 18:49:14 -0400

I'm having a weird problem on a Debian 3.1 system. After moving Gb of

data from the root partition to /var ( and replacing those directories 
with symlinks )

my root partition is still full.
Is there some known problem with df ? Are the LVM mounted
volumes causing it problems ?
I've also looked at / with a graphical disk analysis tool, and all the disk
space is taken up by /home and /var - so why is 14Gb still showing up
as used under / ?
df

Filesystem 1k-blocks Used Available 
Use% Mounted on

/dev/sda2/ 87857 19645 73171 
22% /boot

/dev/sda3/ 17299036 14649436 1770848 90% /

/dev/mapper/sys-home 30963708 20959920 8430924 72% /home

/dev/mapper/sys-var 20970876 8716796 12254080 42% /var

If I add the size of all partitions ( excluding /boot, /home and /var )
I get 1.5Gb, however the df command above shows 14Gb in use.
Here are the sized reported by du for all directories except in /boot, 
/home, /var
/tmp 24
/bin 3112
/dev 852
/lib 128472
/root 4500
/etc 404432
/usr 1021440
Total 1.54 Gb
Also, the disks are on a Adaptec 2400 IDE RAID controller, HW RAID 1
that appear as SCSI drives sda2, sda3 JBOD, and the rest as LVM
Thanks,
Lee Marzke

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