[Nagiosplug-help] check_disk reporting odd information

Christopher McCoy cmccoy at damballa.com
Wed Nov 10 19:56:50 CET 2010

Hi All,

I'm monitoring a few NAS systems with Nagios via NRPE.

check_disk works as expected on two of the three machines, outputting the
following information :

System 1:
[/opt/libexec] # ./check_disk -w 20% -c 10% -p /share/MD0_DATA -q
DISK CRITICAL - free space: /share/MD0_DATA 756618 MB (7%);|

System 2:
[/opt/libexec] # ./check_disk -w 20% -c 10% -p /share/MD0_DATA
DISK OK - free space: /share/MD0_DATA 6879728 MB (61%);|

System 3 however reports the following :
[/opt/libexec] # ./check_disk -w 20% -c 10% -p /share/MD0_DATA
DISK CRITICAL - free space: /share/MD0_DATA 72057594037927936 MB
(640073169734%);| /share/MD0_DATA=18020894MB;9006168;10131939;0;11257711

All three systems are identical in both hardware and software
configurations (core2duo, 2gb ram, 8x2tb drives in a SWR6).  Is there any
reason why check_disk would output such incredibly incorrect information?

Chris McCoy
Internal Systems Engineer
Damballa, Inc.
cmccoy at damballa.com
Office: 404.961.7412
Cell: 404.492.6137 (google voice)

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