HP HA s Software manual Disk Monitor Reference, Disk Monitor Resource Class Hierarchy

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Monitoring Disk Resources

Disk Monitor Reference

Figure 2-1

Disk Monitor Reference

The EMS disk monitor reports information on the physical and logical volumes conﬁgured by LVM (Logical Volume Manager). Anything not conﬁgured through LVM is not monitored from the disk monitor. Monitored disk resources are:

•Physical volume summary (/vg/vgName/pv_summary), a summary status of all physical volumes in a volume group.

•Physical volume and physical volume link status

(/vg/vgname/pv_pvlink/status/deviceName), the status of a given physical volume or PV links in a volume group.

•Logical volume summary (/vg/vgName/lv_summary), a summary status of all logical volumes in a volume group.

•Logical volume status (/vg/vgName/lv/status/lvName), the status of a given logical volume in a volume group.

•Logical volume copies (/vg/vgName/lv/copies/lvName), the number of copies of data available in a volume group.

Monitoring both the physical and logical volumes allows you to detect failures in both active and inactive volume groups and logical volumes and correct hardware problems that put node, application, or data availability at risk.

Figure 2-1 shows the class hierarchy for the disk monitor.

Items in boxes are resource instances that can be monitored.

Items in italics change depending on the names of volume groups, devices, and logical volumes on the system.

Disk Monitor Resource Class Hierarchy

/vg

/vgName

/lv

/pv_summary

/pv_pvlinks

/status

/deviceName

/lv_summary

/status

/lvName

/copies

/lvName

Chapter 2

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Contents B5735-90001 August Using EMS HA MonitorsLegal Notices Contents Monitoring Network Interfaces Monitoring Cluster ResourcesTroubleshooting Monitoring System ResourcesGlossary Contents Printing History Printing Date Part Number EditionB5735-90001 Page Publications PrefacePage Installing and Using EMS What are EMS HA Monitors? Event Monitoring Services High Availability MonitorsChapter Role of EMS HA Monitors in a High Availability Environment Installing EMS HA Monitors Installing and Removing EMS HA MonitorsRemoving EMS HA Monitors Event Monitoring Service Resource Class Hierarchy Using EMS HA MonitorsStatus AvailMB PvpvlinkEvent Monitoring Service Screen Screen Selecting a Resource to MonitorUsing Wildcards Monitoring Request Parameters Creating a Monitoring RequestHow Do I Tell EMS When to Send Events? Which Protocols Can I Use to Send Events? What is a Polling Interval?What is a Notiﬁcation Comment? Copying Monitoring Requests Modifying Monitoring RequestsRemoving Monitoring Requests Service EMS Conﬁguring MC/ServiceGuard Package DependenciesPackage Conﬁguration Screen Package Resource Dependencies Screen Resource Parameters Screen Using EMS HA Monitors Monitoring Disk Resources Monitoring Disk Resources Disk Monitor Resource Class Hierarchy Disk Monitor ReferenceInterpreting Physical Volume Summary Physical Volume SummaryDisk Monitor Reference Interpreting Physical Volume and Physical Volume Link Status Physical Volume and Physical Volume Link StatusInterpreting Logical Volume Summary Logical Volume SummaryInterpreting Logical Volume Status Logical Volume StatusLogical volume is inactive Logical volume is DOWN, a complete copy of the data is notInterpreting Logical Volume Copies Logical Volume Number of CopiesRules for Using the EMS Disk Monitor with MC/ServiceGuard Rules for Using the EMS Disk Monitor with MC/ServiceGuard Pvsummary Calculations Case Conclusion State Rules for RAID ArraysAdding PVGs to Existing Volume Groups Creating Volume Groups on Disk Arrays Using PV Links# mkdir /dev/vgdatabase Creating Logical Volumes Rules for Mirrored Individual Disks Creating Disk Monitoring Requests Disk Monitoring Request Suggestions Parameters When Disks Fail RAID Array Example Resources to Monitor for RAID ArraysPvgup Return Mirrored Disks Example Resources to Monitor for Mirrored DisksMonitoring Parameters Resource Notify Condition Option Example for Interpreting the pvsummary for Mirrored Disks Resources to Monitor for Lock DisksNumber Pvsummary Valid Meaning Value Devices Resource Monitoring Parameters Notify Condition OptionResources to Monitor for Root Volumes Monitoring Cluster Resources Cluster Monitor Reference Cluster Monitor Resource Class HierarchyCluster Interpreting Custer Status Cluster StatusInterpreting Node Status Node StatusInterpreting Package Status Package StatusCreating Cluster Monitoring Requests Monitoring Network Interfaces Network Monitor Reference Network Monitor Resource Class HierarchyInterpreting LAN Interface Status Chapter Conﬁguring Network Monitoring Requests Net/interfaces/lan/status/LANname When value is30 sec HourMonitoring System Resources System Resource Monitor Class Hierarchy System Monitor ReferenceNumber of Users Interpreting Number of UsersResource Name Value Range Interpretation Job Queues Interpreting Job QueuesResource Name Value Interpretation Range Filesystem Available Space Filesystem Available SpaceResource Name Creating System Resource Monitoring Requests 6Troubleshooting EMS Directories and Files Etc/opt/resmon/log EMS Logging Logging and tracingEMS Tracing System Performance Issues Network Performance IssuesPerformance Considerations Testing Disk Monitor Requests Testing Monitor RequestsTesting Cluster Monitor Requests Testing Network Monitor RequestsMaking Sure Monitors are Running Glossary Notiﬁcation See alert Glossary Glossary Index Index Index