check_hd (free diskspace via snmp) reporting wrong values

[Paul Weaver]

I use a slightly modified (allow cheks of "/var" as well as "c:")
check_hd plugin to check disk space on both windows and unix. It works
fine for the most part, except for a windows machine with 2 partitions. 

The E: partition report is fine
OK: hd e:\.* 1% full, 27.4GB free. Warn at 85%, Critical at 95%

The C partition wasn't
OK: hd c:\.* 83% full, 0.7GB free. Warn at 85%, Critical at 95%

Investigating revealed the plugin working correctly
DBG: fullsize  8388447 * 512 = 4294884864
DBG: usedsize  6984708 * 512 = 3576170496

However the C: drive wasn't using 3.5G, it was using about 210*6984708 

So I doubt it's the allocationunit that's a problem.

It now reports the correct value, which may be linked to a restart of
the snmp service.
OK: hd c:\.* 65% full, 1.4GB free. Warn at 85%, Critical at 95%

Has anyone seen this kind of behavior before?


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