MCA Error Recovery: HP-UX Feature for Recovering from Machine Check Aborts

ManualsBrandsHP ManualsSoftwareHP-UX 11i v3 Enterprise OE

MCA Error Recovery

HP-UX Feature for Recovering from Machine Check Aborts

Introduction......................................................................................................................................... 2

Availability ......................................................................................................................................... 2

Configuration...................................................................................................................................... 2

Recovery Process ................................................................................................................................. 3

Dynamic Processor Resilience................................................................................................................ 3

Restarting a Terminated Process............................................................................................................. 3

For more information............................................................................................................................ 4

Summary of content (4 pages)

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MCA Error Recovery HP-UX Feature for Recovering from Machine Check Aborts Introduction......................................................................................................................................... 2 Availability ......................................................................................................................................... 2 Configuration ......................................................................................................................
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Introduction HP Integrity servers provide superior reliability and availability. Nevertheless, even the best of computers can occasionally experience hardware problems that lead to unplanned downtime. Some of these problems are caused by transient events such as an alpha particle strike on memory, cache, or a processor data structure. Intel® Itanium®-based servers support an advanced architecture that allows the system to contain, correct, and signal machine check errors.
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Recovery Process In the rare occurrence when the operating system handles a machine check abort, it must ensure the error can be fully contained and corrected before resuming execution of the system. In some cases this entails termination of a user process executing at the time of the machine check abort. If the error is determined not to be transient or not fully correctable, the system will be brought down.
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For more information • Manpages: mca_recovery_on(5) inittab(4) • Web sites: HP IT Resource Center: http://itrc.hp.com HP-UX 11i v3 Documentation: http://www.docs.hp.com/en/oshpux11iv3.html ServiceGuard Documentation: http://www.docs.hp.com/en/oshpux11iv3.html#Serviceguard System Fault Management Documentation: http://www.docs.hp.com/en/diag.html#2%20Online%20Diagnostics © 2007 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.