The check is working correctly - /mnt/store is a valid path in both circumstances. Remember, in Unix mounted filesystems all sit on top of the / filesystem, so when you umount the filesystem on /mnt/store, that mountpoint still exists (on /). The way I've done it in the past is by using -r/-R to match against the source path. For example, to match "//server/FooBar$" I had a check_disk check with "-r FooBar" in it. I imagine that you might also be able to do what you're looking to do by using -X to exclude whatever filesystem type the / filesystem is (assuming that the mounted filesystem is a different type, of course). I'm sure others will have different ways of doing it too. Good luck. Jeffrey. <div class="gmail_quote">On Wed, Oct 5, 2011 at 9:52 PM, Tim Dunphy <<a href="mailto:bluethundr@jokefire.com">bluethundr@jokefire.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> hello list! hello.. I am running a nagios disk check that reports OK even when the partition is not mounted or the machine is shut down .. how can I test the check and adjust it so that it reports accurately? ## Machine info CentOS release 5.6 (Final) i686 ##Nagios Version Nagios Core 3.3.1 ## Command definition define command{ command_name check_store_disk command_line $USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$ } ## Service definition define service{ use local-service ; Name of service template to use #host_name localhost hostgroup_name web-servers service_description Store Partition check_command check_store_disk!20%!10%!/ } The disk is mounted: [root@VIRTCENT11:~] #df -h nas2:/mnt/store 1.4T 370G 876G 30% /mnt/store [root@VIRTCENT11:~] #/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /mnt/store DISK OK - free space: /mnt/store 896088 MB (70% inode=99%);| /mnt/store=378829MB;1108624;1247202;0;1385780 In this case the check is accurate...the disk is mounted Now I unmount the partition: [root@VIRTCENT11:~] #umount /mnt/store I verify that the partition is not mounted with df and then run the check again: [root@VIRTCENT11:~] #/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /mnt/store DISK OK - free space: / 5737 MB (68% inode=96%);| /=2581MB;7017;7894;0;8772 But the check still thinks the disk is ok. How can I best address this problem? Thank you, Tim ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. <a href="http://p.sf.net/sfu/splunk-d2dcopy1" target="_blank">http://p.sf.net/sfu/splunk-d2dcopy1</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>