Operating | System Surveillance |
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Operating | system | surveillance | provides the service processor with a means to detect | ||||
hang | conditions, | as | well | as | hardware | or software failures, while the operating system | |
is running. It also provides | the operating system with a means to detect a service | ||||||
processor failure caused by the lack of a return heartbeat. | |||||||
Operating | system | surveillance | is not enabled by default, allowing you to run | ||||
operating | systems | that | do not support | this service processor option. | |||
You can also use Service Processor Menus and Service Processor Service Aids to enable or disable operating system surveillance.
For operating system surveillance to work correctly, you must set three parameters:
ŸSurveillance enable/disable
ŸSurveillance interval
The maximum time the service processor should wait for a heartbeat from the operating system before timeout.
ŸSurveillance delay
The | length | of time to | wait from the time the operating system is started to when |
the | first | heartbeat | is expected. |
Surveillance does not take effect until the next time the operating system is started after the parameters have been set.
If desired, you can initiate surveillance mode immediately from Service Aids. In addition to the three options above, a fourth option allows you to select immediate
surveillance, | and rebooting | of | the | system is not necessarily required. |
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If | operating | system surveillance | is | enabled (and system firmware has | passed | control | ||||
to | the | operating | system), | and | the | service processor does not detect | any heartbeats | |||
from | the | operating | system, | the | service processor assumes the system | is hung | and | |||
takes action according to the reboot/restart policy settings. See “Service Processor
Reboot/Restart | Recovery” on | page 64. | |||
If | surveillance | is selected from the service processor menus which are only available | |||
at | bootup, | then | surveillance | is | enabled by default as soon as the system boots. |
From | Service | Aids, the selection | is optional. | ||
72 RS/6000 Enterprise Server Model H80 Series User's Guide
