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Compatible With
  • Nagios 1.x
  • Nagios 2.x
  • Nagios 3.x
Network Monitoring Software - Download Nagios XI
Log Management Software - Nagios Log Server - Download
Netflow Analysis Software - Nagios Network Analyzer - Download
outputs status of gmirror volumes. Uses FreeBSD standard tools (no perl or anything required).



gm3: DEGRADED / gm0: rebuilding / gm2: ok / gm1: ok

Failed/rebuilding volumes will always be first in the output string, to help diagnose the problem when recieving the output via pager/sms.

Various outputs explained:

ok The device is reported as ok by the smart array controller

DEGRADED The RAID volume is degraded, it's still working but without the safety of RAID, and in some cases with severe performance loss.

rebuilding The RAID is rebuilding, will return to OK when done

starting The geom device is currently starting, you shouldn't see this and will return an unknown code to nagios

unknown state Volume is in an unknown state. Please report this to me (soren at so I can update the script
include the following output:
gmirror status
gmirror list


Tested on FreeBSD 6.2
NOTE: This was made on request from a friend, has not been thorougly tested, your mileage may vary.