OpenNMS-存储（SNMP MIB-2主机资源）提供的值不正确

我正在使用OpenNMS Horizon监视几个节点。对于给定的节点，它正在监视“存储（SNMP MIB-2主机资源）”，其中说明磁盘空间（使用率的%）。而对于节点的本地磁盘，我得到了正确的值。对于SAN文件系统磁盘，出现了错误的值（也是负值）。但是，对于少数SAN卷，它提供了正确的值。此错误的可能原因是什么？

数据来自

${OPENNMS_HOME}/etc/datacollection/mib2.xml

中定义的默认MIB-II数据采集配置

<resourceType name="hrStorageIndex" label="Storage (SNMP MIB-2 Host Resources)" resourceLabel="${hrStorageDescr}">
  <persistenceSelectorStrategy class="org.opennms.netmgt.collection.support.PersistAllSelectorStrategy"/>
  <storageStrategy class="org.opennms.netmgt.dao.support.SiblingColumnStorageStrategy">
    <parameter key="sibling-column-name" value="hrStorageDescr"/>
    <parameter key="replace-first" value="s/^-$/_root_fs/"/>
    <parameter key="replace-all" value="s/^-//"/>
    <parameter key="replace-all" value="s/\s//"/>
    <parameter key="replace-all" value="s/:\\.*//"/>
  </storageStrategy>
</resourceType>

获取百分比最重要的部分是在此处进行的计算：

DEF:total={rrd1}:hrStorageSize:AVERAGE \
DEF:used={rrd2}:hrStorageUsed:AVERAGE \
DEF:units={rrd3}:hrStorageAllocUnits:AVERAGE \
CDEF:totalBytes=total,units,* \
CDEF:usedBytes=used,units,* \
CDEF:usedPart=usedBytes,totalBytes,/ \
CDEF:dpercent=usedPart,100,* \

它使用特定于RRDTool的工具来计算“已用字节”和“总字节”的利用率（以百分比为单位）。正如您所看到的，需要根据SNMP代理的单位大小（以字节为单位）以及磁盘上总共有多少个单位和使用的单位来计算已用字节数和总字节数

您可以验证设备中的SNMP代理是否提供了合理的值，并且您可以自己重新计算这些值

我希望这有助于调试您的问题

report.mib2.storage.usage.name=Storage Utilization (MIB-2 Host Resources)
report.mib2.storage.usage.columns=hrStorageSize, hrStorageUsed, hrStorageAllocUnits
report.mib2.storage.usage.propertiesValues=hrStorageDescr
report.mib2.storage.usage.type=hrStorageIndex
report.mib2.storage.usage.command=--title="Storage Utilization on {hrStorageDescr}" \
 --vertical-label="Percentage (%)" \
 --base=1024 \
 --lower-limit 0 \
 --upper-limit 105 \
 DEF:total={rrd1}:hrStorageSize:AVERAGE \
 DEF:used={rrd2}:hrStorageUsed:AVERAGE \
 DEF:units={rrd3}:hrStorageAllocUnits:AVERAGE \
 CDEF:totalBytes=total,units,* \
 CDEF:usedBytes=used,units,* \
 CDEF:usedPart=usedBytes,totalBytes,/ \
 CDEF:dpercent=usedPart,100,* \
 CDEF:dpercent10=0,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent20=10,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent30=20,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent40=30,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent50=40,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent60=50,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent70=60,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent80=70,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent90=80,dpercent,GT,0,dpercent,IF \
 CDEF:dpercent100=90,dpercent,GT,0,dpercent,IF \
 COMMENT:"Storage used in (%)\\n" \
 AREA:dpercent10#5ca53f:"0-10% " \
 AREA:dpercent20#75b731:"11-20%" \
 AREA:dpercent30#90c22f:"21-30%" \
 AREA:dpercent40#b8d029:"31-40%" \
 AREA:dpercent50#e4e11e:"41-50%" \
 COMMENT:"\\n" \
 AREA:dpercent60#fee610:"51-60%" \
 AREA:dpercent70#f4bd1b:"61-70%" \
 AREA:dpercent80#eaa322:"71-80%" \
 AREA:dpercent90#de6822:"81-90%" \
 AREA:dpercent100#d94c20:"91-100%\\n" \
 COMMENT:"\\n" \
 HRULE:100#d94c20 \
 COMMENT:"\\n" \
 LINE1:dpercent#46683b:"Storage used in (%)" \
 GPRINT:dpercent:AVERAGE:"Avg\\: %7.2lf%s" \
 GPRINT:dpercent:MIN:"Min\\: %7.2lf%s" \
 GPRINT:dpercent:MAX:"Max\\: %7.2lf%s\\n" \
 COMMENT:"\\n" \
 COMMENT:"Used Bytes\\: \\n" \
 GPRINT:usedBytes:AVERAGE:"Avg\\: %7.2lf%s" \
 GPRINT:usedBytes:MIN:"Min\\: %7.2lf%s" \
 GPRINT:usedBytes:MAX:"Max\\: %7.2lf%s\\n" \
 COMMENT:"\\n" \
 GPRINT:totalBytes:AVERAGE:"Total Bytes\\: %7.2lf%s"

DEF:total={rrd1}:hrStorageSize:AVERAGE \
DEF:used={rrd2}:hrStorageUsed:AVERAGE \
DEF:units={rrd3}:hrStorageAllocUnits:AVERAGE \
CDEF:totalBytes=total,units,* \
CDEF:usedBytes=used,units,* \
CDEF:usedPart=usedBytes,totalBytes,/ \
CDEF:dpercent=usedPart,100,* \