ports/160314: net-snmp UCD-SNMP-MIB::dskTable does not report correct disk usage

[David Robertson]

>Number:         160314
>Category:       ports
>Synopsis:       net-snmp UCD-SNMP-MIB::dskTable does not report correct disk usage
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 30 14:50:05 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     David Robertson
>Release:        FreeBSD 8.2
>Organization:
Adestra Ltd
>Environment:
FreeBSD bloater.adestra.com 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Hi,

As of net-snmp 5.7 - 5.7_2 disk space is incorrectly reported.  Any ideas what is going wrong here.
The /usr partition is being reported as having -8% free.

FreeBSD 8.2

net-snmp 5.7_2

snmpd.conf contains

disk    /     10%
disk    /tmp  10%
disk    /var  10%
disk    /usr  10%

df -h

Filesystem       Size    Used   Avail Capacity  Mounted on
/dev/mfid0s1a    989M    315M    595M    35%    /
/dev/mfid0s1e    9.7G     12K    8.9G     0%    /tmp
/dev/mfid0s1f    209G     46G    147G    24%    /usr
/dev/mfid0s1d     19G    1.4G     16G     8%    /var

snmpwalk -v 2c -c public localhost UCD-SNMP-MIB::dskTable

UCD-SNMP-MIB::dskIndex.1 = INTEGER: 0
UCD-SNMP-MIB::dskIndex.2 = INTEGER: 1
UCD-SNMP-MIB::dskIndex.3 = INTEGER: 2
UCD-SNMP-MIB::dskIndex.4 = INTEGER: 3
UCD-SNMP-MIB::dskPath.1 = STRING: /
UCD-SNMP-MIB::dskPath.2 = STRING: /tmp
UCD-SNMP-MIB::dskPath.3 = STRING: /var
UCD-SNMP-MIB::dskPath.4 = STRING: /usr
UCD-SNMP-MIB::dskDevice.1 = STRING: /dev/mfid0s1a
UCD-SNMP-MIB::dskDevice.2 = STRING: /dev/mfid0s1e
UCD-SNMP-MIB::dskDevice.3 = STRING: /dev/mfid0s1d
UCD-SNMP-MIB::dskDevice.4 = STRING: /dev/mfid0s1f
UCD-SNMP-MIB::dskMinimum.1 = INTEGER: -1
UCD-SNMP-MIB::dskMinimum.2 = INTEGER: -1
UCD-SNMP-MIB::dskMinimum.3 = INTEGER: -1
UCD-SNMP-MIB::dskMinimum.4 = INTEGER: -1
UCD-SNMP-MIB::dskMinPercent.1 = INTEGER: 10
UCD-SNMP-MIB::dskMinPercent.2 = INTEGER: 10
UCD-SNMP-MIB::dskMinPercent.3 = INTEGER: 10
UCD-SNMP-MIB::dskMinPercent.4 = INTEGER: 10
UCD-SNMP-MIB::dskTotal.1 = INTEGER: 1012974
UCD-SNMP-MIB::dskTotal.2 = INTEGER: 10154158
UCD-SNMP-MIB::dskTotal.3 = INTEGER: 20308398
UCD-SNMP-MIB::dskTotal.4 = INTEGER: 219227030
UCD-SNMP-MIB::dskAvail.1 = INTEGER: 609596
UCD-SNMP-MIB::dskAvail.2 = INTEGER: 9341814
UCD-SNMP-MIB::dskAvail.3 = INTEGER: 17233700
UCD-SNMP-MIB::dskAvail.4 = INTEGER: 153871682
UCD-SNMP-MIB::dskUsed.1 = INTEGER: 322342
UCD-SNMP-MIB::dskUsed.2 = INTEGER: 12
UCD-SNMP-MIB::dskUsed.3 = INTEGER: 1450028
UCD-SNMP-MIB::dskUsed.4 = INTEGER: 47817186
UCD-SNMP-MIB::dskPercent.1 = INTEGER: 31
UCD-SNMP-MIB::dskPercent.2 = INTEGER: 0
UCD-SNMP-MIB::dskPercent.3 = INTEGER: 7
UCD-SNMP-MIB::dskPercent.4 = INTEGER: -17
UCD-SNMP-MIB::dskPercentNode.1 = INTEGER: 1
UCD-SNMP-MIB::dskPercentNode.2 = INTEGER: 0
UCD-SNMP-MIB::dskPercentNode.3 = INTEGER: 4
UCD-SNMP-MIB::dskPercentNode.4 = INTEGER: 1
UCD-SNMP-MIB::dskTotalLow.1 = Gauge32: 1012974
UCD-SNMP-MIB::dskTotalLow.2 = Gauge32: 10154158
UCD-SNMP-MIB::dskTotalLow.3 = Gauge32: 20308398
UCD-SNMP-MIB::dskTotalLow.4 = Gauge32: 219227030
UCD-SNMP-MIB::dskTotalHigh.1 = Gauge32: 0
UCD-SNMP-MIB::dskTotalHigh.2 = Gauge32: 0
UCD-SNMP-MIB::dskTotalHigh.3 = Gauge32: 0
UCD-SNMP-MIB::dskTotalHigh.4 = Gauge32: 0
UCD-SNMP-MIB::dskAvailLow.1 = Gauge32: 609596
UCD-SNMP-MIB::dskAvailLow.2 = Gauge32: 9341814
UCD-SNMP-MIB::dskAvailLow.3 = Gauge32: 17233700
UCD-SNMP-MIB::dskAvailLow.4 = Gauge32: 153871682
UCD-SNMP-MIB::dskAvailHigh.1 = Gauge32: 0
UCD-SNMP-MIB::dskAvailHigh.2 = Gauge32: 0
UCD-SNMP-MIB::dskAvailHigh.3 = Gauge32: 0
UCD-SNMP-MIB::dskAvailHigh.4 = Gauge32: 0
UCD-SNMP-MIB::dskUsedLow.1 = Gauge32: 322342
UCD-SNMP-MIB::dskUsedLow.2 = Gauge32: 12
UCD-SNMP-MIB::dskUsedLow.3 = Gauge32: 1450028
UCD-SNMP-MIB::dskUsedLow.4 = Gauge32: 47817186
UCD-SNMP-MIB::dskUsedHigh.1 = Gauge32: 0
UCD-SNMP-MIB::dskUsedHigh.2 = Gauge32: 0
UCD-SNMP-MIB::dskUsedHigh.3 = Gauge32: 0
UCD-SNMP-MIB::dskUsedHigh.4 = Gauge32: 0
UCD-SNMP-MIB::dskErrorFlag.1 = INTEGER: noError(0)
UCD-SNMP-MIB::dskErrorFlag.2 = INTEGER: noError(0)
UCD-SNMP-MIB::dskErrorFlag.3 = INTEGER: noError(0)
UCD-SNMP-MIB::dskErrorFlag.4 = INTEGER: error(1)
UCD-SNMP-MIB::dskErrorMsg.1 = STRING:
UCD-SNMP-MIB::dskErrorMsg.2 = STRING:
UCD-SNMP-MIB::dskErrorMsg.3 = STRING:
UCD-SNMP-MIB::dskErrorMsg.4 = STRING: /usr: less than 10% free (= -8%)

Many thanks for any assistance.

Regards

David 
>How-To-Repeat:

>Fix:


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