RH Switchover on OS Crash | Intel ZT 4901 guide

RH Switchover on OS Crash

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The High-Availability RH architecture enables the system master board to perform a switchover to the backup host in the event of a system crash.

Under the Linux* operating system the RH Software patches the Linux kernel to perform a switchover whenever a kernel panic occurs. In addition, the host board can be forced to reboot under these circumstances by simply adding the string “panic=1” in the append statement found in the lilo.conf configuration file.

Under the VxWorks* operating system this same switchover/reboot functionality is attached to the NMI interrupt handler. To force a system switchover and reboot under VxWorks, you can configure the ZT 5524 watchdog timeout to force an NMI interrupt to be generated. This forces the modified NMI handler to be activated in the event that the ZT 5524 watchdog is not strobed in a suitable amount of time. This causes a switchover and reboot of the failed host to occur. See the Intel® NetStructure™ ZT 5524 System Master Processor Board Technical Product Specification for information about configuring the watchdog/NMI interrupt. For more information on obtaining documentation, see Section H.2, “User Documentation” on page 131.

High Availability Software for the Intel® NetStructureTM ZT 4901 Technical Product Specification

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Intel ZT 4901 manual RH Switchover on OS Crash

Contents

Intel NetStructureTM ZT 4901 High Availability Software Technical Product SpecificationPage Contents Hot Swap API Demonstration Utilities Tables Figures Date Revision Description Revision History This page intentionally left blank Document Organization Document Organization Introduction TerminologyFollowing terms are commonly used in this document Introduction Introduction High Availability Hardware Approach Processor Boards PCICIC Bridge Mezzanine RSS Processor Board Block Diagram Backplane RSS Host with Bridge Mezzanine Block Diagram High-Availability Software Approach Host ApplicationHost application System Management Backplane Device Drivers System Management Backplane Device Drivers Host Application Software ServiceabilityGoals of the Host Application Portability Host Application Software Division of Labor Development Issues Graceful Switchover Hardened ApplicationsCode Modularity System Management Redundant Host APIIpmi API Baseboard Management Controller Firmware Enhancements Fault ConfigurationHot Swap API Slot Control API Channel Definitions for ZT Isolation Strategies Ipmi RH Channel Commands RH Channel EnabledRH Channel Get RH BMC Address Request Response This page intentionally left blank Device Driver Design High Availability CompactPCI Device Drivers Initialization Device Driver StatesQuiesced Activation Find Adding High-Availability FunctionalityDevice Removed Resume Operations Add Device Suspend Operations Remove DeviceDriver Synchronization Summary Redundant Host API RhGetHwDestinationHostAndResetIntel-Specific APIs RhSetHostName Redundant Host API Redundant Host PICMG* 2.12 APIsHsistatussuccess Hsistatusinvalidparameter Following topics specify each of the interface functions Definitions and Types Minoralarm Majoralarm Criticalalarm Rhalarmseverity RESETREQUIRED, Resetnotrequired Unknown Rhslotneedsreset RhEnumerateInstances Initialization/TerminationHsistatusno Datadetected Hsistatusinsufficientbuffer RhOpen Char *InstanceId Optional OUT Rhhandle *pHandle RhOpenInstanceId RhEnumerateInstances RhGetInstanceID RhCloseRhClose in Rhhandle Handle Handle Domain and Host Information API Handle Handle of the current session PInstanceIDRhGetDomainCount RhGetDomainCount Rhhandle Handle OUT uint32 *pCount RhGetDomainNumbers Handle Handle of the current session PCountSystem RhGetDomainSlotPath RhGetDomainOwnership SlotPathLength Domain is written as a null-terminated stringCharacter HSISTATUSINSUFFICIENTBUFFER, this is the minimum RhGetDomainSlotCount RhGetDomainSlotsIs placed RhGetSlotDomain RhGetCurrentHostNumber RhGetHostCountRhGetCurrentHostNumber Rhhandle Handle OUT uint32 *pHost RhGetHostNumbers RhGetHostCount Rhhandle Handle OUT uint32 *pHostCountHandle Handle of the current session PHostCount RhGetHostName False RhSetHostAvailability RhGetHostAvailability Slot Information API RhGetDomainAvailabilityToHostRhGetPhysicalSlotInformation If the specified slot is empty HsinosuchdeviceRhslotdescriptor Devices directly placed in the physical slots SlotPath RhGetSlotChildInformation+ FunctionNumber for the corresponding PCI-PCI bridge By two characters from the set ‘0’..’9’, ‘A’..’F’ If there are no child devices below the specified bridge Handle Handle of the current session PhysSlot PCI buses in the system Switchover Scenarios and Theory of Operation Switchover API Partially Cooperative Switchover Hostile Switchover RhPrepareForSwitchover Hsistatusrequestdenied Hsistatussuccess returned in the case of success RhCancelPrepareForSwitchover RhGetDomainSwConnectionStatus RhPerformSwitchover RhGetSlotSwConnectionStatusInvalid session handle or the specified slot does not exist Handle Handle of the current session DestinationHost RhSetHwDestinationHostValue Rhnodestinationhost means no host should own Specified domains Rhnodestinationhost means no host owns the domains Notification, Reporting and Alarms RhEnableDomainStateNotificationRhGetHwDestinationHost RhEnableSwitchoverNotification DisconnectingDuring software connection and disconnection Switchovers in which it participates RhEnableSwitchoverRequestNotification RhEnableUnsafeSwitchoverNotification Indicates is the depth of the device below the physical slot Device in unsafe state RhDisableNotification Handle Handle of the current session NotificationType Hot Swap API Hot Swap API ImbOpenDriver ImbCloseDriverImbDeviceIoControl Lpvoid ImbSendTimedI2cRequestDword Lpdword ImbSendIpmiRequest ImbGetAsyncMessageAccesnstatus ImbRegisterForAsyncMsgNotification ImbIsAsyncMessageAvailableImbUnregisterForAsyncMsgNotification EventId EventID handle returned once registered ImbSetLocalBmcAddr ImbGetLocalBmcAddr Byte imbGetIpmiVersion ImbGetIpmiVersionByte Current determined Ipmi version HsiOpenSlotControl Slot Control APIHsiCloseSlotControl Hsistatusnomemory HsiGetSlotCount HsiGetBoardPresentSlot Control API Hsistatusnodatadetected HsiGetBoardHealthy Healthy HsiGetSlotPower HsiGetSlotReset HsiSetSlotPower HsiSetSlotReset HsistatusnotimplementedSlot Physical slot number HsiGetSlotM66Enable False 66 MHz operation is not enabled for the slotHsiapidef Hsistatus HsiSetSlotM66Enable Handle Handle of the current session Callback HsiSetSlotEventCallbackFunction Returned if the arguments or handle is invalid Void *HSISLOTEVENTCALLBACK HsisloteventinfostructHsisloteventinfo Functional Description Demonstration UtilitiesUser Interface RH Interface Software Initiated Handovers Multiple Mode CapabilitiesHardware Initiated Failovers Demonstration Utilities Notification, Reporting and Alarms Switchover FunctionsHost Domain Enumeration and Association Slot Information Fault Configuration Ipmi InterfaceIsolation Strategy HS Functional Description Hot Swap Interface PCI Tree Information Retrieval Flags Slot Information Structure Slot State Slot Control Interface Demonstration Utilities Software Installation Installing the Redundant Host Software KitLinux Source Installation Installing RH Source RPMPatching and Rebuilding an RH-Enabled Kernel Software Installation Making RH Configuration Changes Configuring the Redundant Host Infrastructure1 /lib/modules/priBptd.o 2 /lib/modules/slotcntrl.o VxWorks Tornado II Setup 3 /CompactPCI-RH-1.0/app/lib4 /CompactPCI-RH-1.0/app/bin RedundantHostFunctionReturnValuesB Redundant Host Function Return Values Hsistatusnosysrhtablefound Hsistatusnosuchbridge Hsistatusnotready HsistatusnotavailibleHsistatusobjectdoesnotexist Hsistatusoperationaborted Hsistatusunsuccessfultranslation HsistatusunabletosendpacketHsistatusunsupportedplatform Hsistatusuptinsertionfailed This page intentionally left blank HSK Driver Object Declaration HSK Device Driver Interface for VxWorks HSK Device Driver Interface for VxWorks HSK Device Information Structure Compatlistcheckdevice HSK Driver Instantiation Code Segment Prhdeviceobj AddDevice Redundant Host-Aware Callback Definitions Hsistatus StopDevice Hsistatus StartDevicePrhdeviceobj deviceobject Hsistatussuccess if successful otherwise Hsistatusfailure Hsistatus SurpriseRemoval Hsistatus RemoveDevice Hsistatus rhHskRegisterMsgCallback RH-Aware Message Registration Definitions Process Packet Callback Definition Int rhHskUnregisterMsgCallbackPcilocation pci Hsistatus rhHskSendMessage RH-Aware Send Message DefinitionUINT8* pBuf, int iLen, Pvoid pContext Length in bytes of the data packet being sent PPackett Alternate Hscsr Interfaces RH Device Driver Interface for Linux RH Device Driver Interface for Linux Non Bus Mastering Peripheral Design Guideline for Peripheral VendorsEBus Mastering DMA Capable Peripheral Support for Unmodified Standard Drivers Design Guideline for Peripheral Vendors Category ZT 5550 Functions Redundant Host Functions Porting ZT 5550 HA Applications to Picmg HAGetEthernetRo Porting ZT 5550 HA Applications to PicmgUting HASetEthernetRou RH Switchover on OS Crash RH Switchover on OS Crash CompactPCI Data Sheet ReferenceUser Documentation VxWorks Wind River* VxWorks Programmer’s Guide is available at Data Sheet Reference Impi Index Ipmi API Page This page intentionally left blank