[Nagiosplug-help] check_disk problem

Vinay Kumar khanda at gmail.com
Wed Jul 12 20:49:27 CEST 2006

I am having problems with check_disk reporting incorrect values for free
disk space. I am seeing accross various linux machines.

The version i am running is
check_disk (nagios-plugins 1.4.3) 1.64

The problem i am seeing the following..

[root at caitmon plugins]# ./check_disk -w 20% -c 10% -p /data
DISK OK - free space: /data 17652 MB (95% inode=100%);|

[root at caitmon plugins]# df -k /data
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda10            19125300     77888  18075884   1% /data

If you see the above results. The free space check_disk is "95%". Whereas df
-k saying it is 99%. And also the perfdata is also does not match the free

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