Method of handling unreadable blocks during write of a RAID...

Details Method of handling unreadable blocks during write of a RAID... Method of handling unreadable blocks during write of a RAID...

2005-09-13

2005-09-13

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

06944791

ABSTRACT:
Disclosed is a method for continuing a write operation in a RAID device when parity cannot be generated. In cases where a read error or plurality of read errors prohibits the proper calculation of parity for a block of data, the parity block may be written as a bad block of data for subsequent read operations. The parity block may be forced to be a bad block of data by writing a recognizable pattern of data with a known bad error correction code or other method of forcing a read error to occur on an otherwise good block of a disk storage device. This method allows the write operation to continue without halting the system as with conventional RAID devices.

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