check_lvm

Plugin for Nagios to monitor the used space on LVM logical volumes
Written by Richard Taylor

You are free to use this script under the terms of the Gnu Public License.

I make no guarantee as to whether this will harm anything, much less work - use at your own risk.

NOTE - This script only works on _mounted_ volumes!

Usage: ./check_lvm -w -c

Description:
This plugin finds all LVM logical volumes, checks their used space, and compares against the supplied thresholds.

Output:

The plugin prints "ok" or either "warning" or "critical" if the corresponing threshold is reached, followed by the used space info for the offending volumes.

Exit Codes
0 OK
1 Warning
2 Critical
3 Unknown Invalid command line arguments or could not determine used space

Example: check_dirsize -w 90% -c 95%

OK (exit code 0)
WARNING - /dev/vg1/lv0 92% (exit code 1)
CRITICAL - /dev/vg0/lv0 97% (exit code 2)

I've also made an event handler to resize the lv's from the output of the check plugin:

lvm_resize 1.1 (c) 2006 Richard Taylor

Event handler script for Nagios for resizing LVM logical volumes

Usage:
lvm_resize $SERVICESTATE$ $STATETYPE$ $SERVICEATTEMPT$ resize_percent $OUTPUT$

NOTE: resize_percent is an integer greater than zero (without a '%' character)

This script currently only works with ext2/3 and reiserfs!