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HP B6191-90029 manual How Does the PSM Work?

Models: B6191-90029

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Using the Peripheral Status Monitor

How Does the PSM Work?

How Does the PSM Work?

The PSM converts hardware events detected by the EMS Hardware Monitors to “UP” or “DOWN” status, which is used by MC/ServiceGuard in controlling package failover. Figure 4-1 on page 76 illustrates how the PSM works with the other components of hardware monitoring.

Because hardware event monitors detect and report the occurrence of events rather that resource status, a method is required to alert MC/ServiceGuard when a hardware resource has a status that may impact data availability. The PSM provides this functionality, serving as the interface between the hardware event monitors and MC/ServiceGuard.

Some monitors can determine when a problem has been corrected and the hardware is functioning properly. These monitors automatically alert the PSM when the hardware is ﬁxed, and the PSM will return the state of the hardware to UP. Other monitors do not have the capability of determining when the hardware problem is corrected. With these monitors it will be necessary for the user to use the set_fixed utility to manually return the operational state to UP.

Chapter 4

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HP B6191-90029 manual How Does the PSM Work?

Contents

Manufacturing Part Number B6191-90029 May EMS Hardware Monitors Users GuideLegal Notices Printing History Page Contents Hardware Monitor Conﬁguration Files Using the Peripheral Status MonitorIndex Special ProceduresContents Tables Tables Figures Figures About This Manual Related Web sites Introduction Hardware Monitoring Overview What is Hardware Monitoring?Components Involved in Hardware Monitoring How Does Hardware Monitoring Work?Beneﬁts of Hardware Monitoring Products Supported by Hardware Monitors Tips for Hardware Monitoring Hardware Monitoring Terms Hardware Monitoring TermsTerm Deﬁnition Hardware Monitoring Terms Hardware Monitoring Terms Hardware Monitoring Overview Chapter Installing and Using Monitors Steps Involved Steps for Installing and Conﬁguring Hardware Monitoring Installing EMS Hardware Monitors Ioscan UtilitySupported System Conﬁguration Removing EMS Hardware Monitors Checking for Special Requirements Disk ArraysProduct Model/Product Special Number Requirements Tape Products monitored by Scsi Tape Devices Monitor Disk ProductsTape Products monitored by Scsi Tape Devices Monitor High Availability Storage Systems Fibre Channel Adapters Fibre Channel Scsi MultiplexersFibre Channel Switch Fibre Channel Arbitrated Loop FC-AL HubProduct Model/Product Special Requirements Number System MemoryInterface Cards Others Using Hardware Monitoring Requests What Is a Monitoring Request?Some Monitoring Request Examples Building a Monitoring Request To run the Monitoring Request Manager, type Running the Monitoring Request ManagerEnabling Hardware Event Monitoring Default Monitoring Requests Default Monitoring Requests for Each MonitorSeverity Levels Notiﬁcation Method To list the descriptions of available monitors Listing Monitor DescriptionsTo view or show the current monitoring requests Viewing Current Monitoring RequestsTo add a monitoring request Adding a Monitoring RequestSetting Description Monitoring Requests Conﬁguration SettingsEvent Severity Levels Event Severity MC/ServiceGuard Level Description ResponseEvent Severity Levels Example of Adding a Monitoring Request == NEW Monitoring Choose Default== ADD Comment If DesiredTo modify a monitoring request Modifying Monitoring RequestsVerifying Hardware Event Monitoring Major Checking Detailed Monitoring StatusRetrieving and Interpreting Event Messages Sample Event MessageCritical To delete a monitoring request Deleting Monitoring RequestsDisabling Hardware Event Monitoring To disable hardware event monitoringDisabling Hardware Event Monitoring Chapter Detailed Description Hardware Monitoring Architecture Detailed Picture of Hardware MonitoringHardware Monitoring Request Manager Components from Three Different ApplicationsEMS Hardware Event Monitor Polling or Asynchronous?Startup Client Peripheral Status Monitor PSM Event Monitoring Service EMSFile Locations File LocationsDirectories and Files Description Monitoring Startup Process Startup Process in DetailDisabling Monitoring Event Decoding Asynchronous Event Detection in DetailAsynchronous Event Detection Process FC-AL Hub and FC Switch Polling Processes Event Polling in DetailPA Memory Monitor Polling Monitoring Polling Process Memory Monitor Polling Process Detailed Picture of Hardware Monitoring Chapter Using the Peripheral Status Monitor Peripheral Status Monitor Overview How Does the PSM Work? Peripheral Status Monitor PSM Status PSM ComponentsPSM States PSM Resource PathsHow Does the PSM Work? Conﬁguring MC/ServiceGuard Package Dependencies with the PSM To create a package resource dependency Conﬁguring Package Dependencies using SAMResourcepollinginterval Resourceupvalue =UP Creating EMS Monitoring Requests for PSM To create a PSM monitoring requestFrom the Actions menu select Add Monitoring Request Specifying When to Send Event Notify Monitoring Request ParametersDetermining the Frequency of Events Options Critical Major Minor Normal Setting the Polling Interval Polling IntervalSelecting Protocols for Sending Events Notify Via Opcmsg ITOTo set the TCP or UDP conditions Snmp trapsTo set the Snmp trap TCP and UDPAdding a Notiﬁcation Comment Comment Copying Monitoring Requests To change the monitoring parameters of a request To remove monitoring requests Removing Monitoring RequestsViewing Monitoring Requests To view the parameters for a monitoring requestFrom the Actions menu select View Monitoring Request Using the setfixed Utility to Restore Hardware UP State To restore the operating state of a resource to UPExample 4-1 Example of Using setfixed Using the Peripheral Status Monitor Hardware Monitor Conﬁguration Files Monitor Conﬁguration File Types OverviewVerifying Monitors with a Test Event Client Conﬁguration FileClients Targets for Events Creating a Client Conﬁguration File *.clcfgFollowing is a sample of a client conﬁguration .clcfg ﬁle Sample Client Conﬁguration FileEQ100INFORMATIONTRUENOTUSED ANY1NONENOOPNOOPNONE #CRITICAL# msa1000 events Client Conﬁguration File Monitor-Speciﬁc and Global Conﬁguration Files File NamesFile Format Interval must be a Setting Values DescriptionMonitor Conﬁguration File Entries Eventnum must be aSeverity Action Monitor Conﬁguration File SettingsFrequency must be a Event DeﬁnitionSample Global Conﬁguration File Polling IntervalRepeat Frequency Defineevent 100401 Information = Communication DeviceDefineevent 100201 Information Defineevent 100301 InformationDefault # DefaultDtlpwrsomc 106 Defineevent 100233 Critical Defineevent 100132 CriticalDefineevent 100232 Critical Defineevent 100133 CriticalWrso Defineevent 100150 Critical Critical DefaultDefineevent 100158 Critical Critical Default #Defineevent 100572 Critical Defineevent 100272 CriticalDefineevent 100372 Critical Defineevent 100472 CriticalDefineevent 100876 Critical Defineevent 100075 CriticalDefineevent 100376 Critical Defineevent 100476 CriticalInformation 114 Sample Monitor-Speciﬁc Conﬁguration File Severityaction Serious Severityaction InformationSeverityaction Minorwarning Severityaction MajorwarningStartup Conﬁguration File Keyword Values Description Startup Conﬁguration File EntriesChapter 119 Default File Entries Default Monitoring RequestsDescription Entry Peripheral Status Monitor PSM Conﬁguration File Considerations for Modifying the PSM Conﬁguration File Monitorresourcename PSM Conﬁguration File Fields124 Downseveritythreshold Majorwarning Downseverityoperator = Example File Entries126 Special Procedures Fibre Channel Arbitrated Loop Hub Monitor Initial Monitor Conﬁguration Conﬁguring the FC-AL Monitor Conﬁguration FileStep Conﬁguration Files Adding or Removing an FC-AL HubThis setting is required Default Setting Value DescriptionPSM Conﬁguration File Fibre Channel Switch Monitor Adding or Removing an FC Switch Conﬁguring the FC Switch Monitor Conﬁguration FileChanging the FC Switch Monitoring Conﬁguration Chapter 135 136 Chapter 137 138 Index 140