Bug in check_disk when using mount points?

[Andy Shellam (Mailing Lists)]

Hari,

Works fine here (this is on Fedora 4) - check_disk (nagios-plugins 
1.4.5) 1.79:

[NetServe at cooma ~]$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hda1              12G  1.4G   10G  13% /
/dev/hda5             4.6G   33M  4.4G   1% /tmp
/dev/hda6              56G  912M   52G   2% /endeavour
none                  247M     0  247M   0% /dev/shm
[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 20% -c 10% -p /
DISK OK - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;9764;10985;0;12206
[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 90% -c 10% -p /
DISK WARNING - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;1220;10985;0;12206
[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 95% -c 90% -p /
DISK CRITICAL - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;610;1220;0;12206

Even with the megabytes switch (-m):

[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 10100 -c 10000 -m -p /
DISK OK - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;2106;2206;0;12206
[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 10190 -c 10000 -m -p /
DISK WARNING - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;2016;2206;0;12206
[NetServe at cooma ~]$ sudo -u nagios /usr/local/nagios/libexec/check_disk 
-w 12000 -c 11000 -m -p /
DISK CRITICAL - free space: / 10180 MB (87% inode=96%);| 
/=1406MB;206;1206;0;12206

Have you tried the latest version of the plugins?

Andy.


Hari Sekhon wrote:
> OK it's not just a bug with the -m switch but with the whole plugin. 
> Observe:
>
>
> /usr/nagios/libexec/check_disk -l -w 2 -c 1 -u TB -vvv
> DISK OK - free space: / 0 TB (77% inode=98%); /dev 0 TB (100% 
> inode=98%); /home/match/ramdisk 0 TB (17% inode=100%); /dev/shm 0 TB 
> (100% inode=100%); /boot 0 TB (93% inode=100%);
> 0 of 0 TB (77% inode=98%) free on /dev/sda2 (type ext3 mounted on /) 
> warn:2 crit:1 warn%:-1% crit%:-1%
> 0 of 0 TB (100% inode=98%) free on udev (type tmpfs mounted on /dev) 
> warn:2 crit:1 warn%:-1% crit%:-1%
> 0 of 0 TB (17% inode=100%) free on tmpfs (type tmpfs mounted on 
> /home/match/ramdisk) warn:2 crit:1 warn%:-1% crit%:-1%
> 0 of 0 TB (100% inode=100%) free on shm (type tmpfs mounted on /dev/shm) 
> warn:2 crit:1 warn%:-1% crit%:-1%
> 0 of 0 TB (93% inode=100%) free on /dev/sda1 (type ext3 mounted on 
> /boot) warn:2 crit:1 warn%:-1% crit%:-1%| /=0TB;0;0;98;0 
> /dev=0TB;0;0;97;0 /home/match/ramdisk=0TB;0;0;99;0 /dev/shm=0TB;0;0;99;0 
> /boot=0TB;0;0;99;0
>
> Hari Sekhon
>
>
>
> Hari Sekhon wrote:
>   
>> I'm using check disk and want to have it test the filesystem of a 
>> mount point rather than a partition.
>>
>> # df /
>> Filesystem           1K-blocks      Used Available Use% Mounted on
>> /dev/sda2            153337060  28240084 117307864  20% /
>>
>> DF shows the filesystem is 20% used so I want this to force an error 
>> using the following test line so see that it actually works:
>>
>> check_disk -m / -w 90%
>>
>> the above check_disk should show Warning at this point as there is 
>> less than 90% free space left. Whether I do 10% or 90% it still 
>> returns successful even when it's not in the threshold range.
>>
>> # /usr/nagios/libexec/check_disk -m /home -w 100%
>> DISK OK - free space: / 114558 MB (77% inode=98%);| 
>> /=35185MB;149743;149743;98;149743
>> # /usr/nagios/libexec/check_disk -m /home -w 10%
>> DISK OK - free space: / 114558 MB (77% inode=98%);| 
>> /=35185MB;149743;149743;98;149743
>> # /usr/nagios/libexec/check_disk -m /home -w 90%
>> DISK OK - free space: / 114558 MB (77% inode=98%);| 
>> /=35185MB;149743;149743;98;149743
>>
>>
>> The same is true when I was testing the /boot partition (which is a 
>> separate partition). So it looks like the -m switch is broken.
>>
>>
>> Can anyone verify this? Is it a known bug, is it fixed?
>>
>> I am running "check_disk (nagios-plugins 1.4.3) 1.64" (taken from the 
>> top line of check_disk --help)
>>
>>     
>
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-- 
Andy Shellam
NetServe Support Team

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