Method for determining a source of failure during a file system

Details Method for determining a source of failure during a file system Method for determining a source of failure during a file system

1998-01-14

2000-11-14

Sheikh, Ayaz R.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 15, 709201, G06F 1130

Patent

active

061484172

ABSTRACT:
One embodiment of the present invention provides a method for determining a source of failure during a failed file access in a computer system. This method generates a sequence of file references from a first location in the computer system, and maintains a record of parameters specifying the sequence of file references. The results of the sequence of file references are examined to detect a failure during a file reference. If a failure is detected, the failed file reference is reconstructed using the record of parameters, and is then retried to determine the source of failure. In between retries, the method allows various system components to be manipulated to isolate the source of failure. In one embodiment, these manipulations include: replacing hardware components; replacing system firmware; replacing software components; and inserting debug code into a program on the computer system. Another embodiment of the present invention transfers file reference parameters to a second location in the computer system, so that the failed file reference can be retried from the second location in order to isolate the source of the failure.

REFERENCES:
patent: 5564011 (1996-10-01), Yammine et al.
patent: 5640556 (1997-06-01), Tamura
patent: 5659682 (1997-08-01), Devarakonda et al.
patent: 5909542 (1999-06-01), Paquette et al.

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