GNU Monitoring question

[JKimbrell]

Our monitoring team wants to monitor file systems.
On one of our customers, they have the following;
df -Pk
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/mapper/VolGroup00-LogVol00 50913908 30345176 17940740 63% /
/dev/hda1 101086 49119 46748 52% /boot
tmpfs 9437184 2516 9434668 1% /dev/shm

When I ask him what's the problem, they state that they want to monitor /app...etc...
I informed them that since this customer has a logical volume of 00, but no logical groups, everything is under the root dir.
Am I correct, because for some reason, I think there may be a way to monitor the size of the file systems under the logicalvolume. Any ideas???
Thanks
J.K.

[rokytnji]

Not sure if Conky may be what you want to use, but

Gentoo Linux Documentation -- Gentoo Linux Conky Howto