[Nagiosplug-help] [Nagios-users] BUG: check_disk doesn'tsupport LVM volumes

[Ralph.Grothe at itdz-berlin.de]

Almost all of the hosts I monitor with Nagios use some kind of
volume manager
(either LVM on HP-UX and Linux, or VxVM on Solaris),
and I have no problem whatsoever with check_disk on those.

I wonder why you check the partitions (or better LVs in your
case)
instead of having all local mounts checked by explicitly
excluding
those which make no sense (e.g. media mounts like CD-ROMs) or
special filesystems
(like iso9660 or cdfs, procfs, tmpfs etc.)
For the first use the -x option, and for the latter -X (both can
be used repeatedly)
As I usually have those checks executed on behalf of an nrpe
daemon
I simply define an appropiate command in nrpe.conf of the
monitored host

E.g. for Linux boxes I would use an nrpe command like

# grep check_disk_LOCPCT_W10C5 /usr/lib/nagios/etc/nrpe.cfg 
command[check_disk_LOCPCT_W10C5]=/usr/lib/nagios/plugins/check_di
sk -e -l -X iso9660 -X nfs -X proc -X sysv -X tmpfs -w 10% -c 5%

where warning state is reached when percentage free space is less
than 10% and a critical state when less than 5%.
As you can see the "%" doesn't need any special quoting for the
shell.

Besides, I think it doesn't make sense to check the state of NFS
mounts 
why I use the -l option above to restrict the check on local
filesystems.
Because of unnecessary performance penalties (querying rpc.statd)
and possible absence of RPC services or stale NFS handles etc.
those shared NFS filesystems should rather be checked on the
exporting server, I would assume.


> -----Original Message-----
> From: nagiosplug-help-bounces at lists.sourceforge.net
> [mailto:nagiosplug-help-bounces at lists.sourceforge.net]On Behalf
Of
> Martin J. Green
> Sent: Monday, July 31, 2006 5:57 PM
> To: Miles O'Neal; nagios-users at lists.sourceforge.net
> Cc: nagiosplug-help at lists.sourceforge.net
> Subject: Re: [Nagiosplug-help] [Nagios-users] BUG: check_disk
> doesn'tsupport LVM volumes
> 
> 
> / is the lvm volume and there's no hda1 (the machine has scsi
disks in
> hardware raid), but if I don't use *any* partition as an
argument it
> shows everything correctly (all partitions). I can also look at
other
> stuff like /dev/shm etc ok.
> 
> Output of df...
> 
> Filesystem           1K-blocks      Used Available Use% Mounted
on
> /dev/mapper/VolGroup00-LogVol01
>                      142965368  75163388  60422628  56% /
> /dev/md0                101018     10525     85277  11% /boot
> /dev/shm               3070648         0   3070648   0%
/dev/shm
> 192.168.254.1:/storage/vm
>                      1118120992 1020981088  39426400  97%
/mnt/storage
> 
> And df -hP
> 
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/mapper/VolGroup00-LogVol01  137G   72G   58G  56% /
> /dev/md0               99M   11M   84M  11% /boot
> /dev/shm              3.0G     0  3.0G   0% /dev/shm
> 192.168.254.1:/storage/vm  1.1T  974G   38G  97% /mnt/storage
> 
> Oh and nfs mounts don't work either (again they show up when 
> its passed
> no partition as an argument, but try and check it on its own
and it
> doesn't work).
> 
> M
> 
> -----Original Message-----
> From: Miles O'Neal [mailto:meo at intrinsity.com] 
> Sent: 31 July 2006 16:53
> To: Martin J. Green
> Cc: Marc Powell; nagios-users at lists.sourceforge.net;
> nagiosplug-help at lists.sourceforge.net
> Subject: Re: [Nagios-users] BUG: check_disk doesn't support 
> LVM volumes
> 
> Martin J. Green said...
> |
> |Both -p & --partition have been tried. Whether I use
> |/dev/VolGroup00/LogVol01 or /dev/mapper/VolGroup00-LogVol01 I
get the
> |same error
> 
> Do you have any non-RAID, non-LVM partitions
> to try with check_disk on this system, to 
> verify what's happening?  If so, does it work
> correctly with those (either / or /dev/hda1.
> or whatever)?
> 
> What is the output if you just type "df -hP"
> from a command line?
> 
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