Device driver error isolation on devices wired via FSI chained interface
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United States of America Patent
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Feb 28, 2017
Grant Date -
Apr 7, 2016
app pub date -
Jun 2, 2015
filing date -
Oct 7, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Fault isolation for a computer system having multiple FRUs in an FSI chain uses logic embedded in a device driver to determine first failure data and a logical error identifier. The logical error identifier represents a hardware logical area of the fault. The fault is then mapped to a segment of the system based on a self-describing system model which includes FRU boundary relationships for the devices. Operation of the device driver is carried out by a flexible service processor. The device driver uses the first failure data to identify a link at a failure point corresponding to the fault and determine a failure type at the link, then maps the link and the failure type to the logical error identifier. After identifying the segment, the device driver can generate a list of callouts of the field replaceable units associated with the segment which require replacement.
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