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Sense Data and Error Recovery Methods
378 C141-C013
Table 6.6 Error recovery processing procedures (1/4)
Recovery
Method
Recovery Processing Procedure
0 It is not necessary to perform the error recovery processing. Continue processing.
1 Error recovery processing is impossible. Terminate processing.
2 This is a programming error and error recovery processing is impossible.
Terminate processing and correct the error in the system (INIT) programming.
3 This is an error in the SAS I/F and error recovery processing is impossible.
Terminate processing and check the system's SAS connection.
4 1) Reissue the original command (Retry).
2) If the command is terminated with the same error when retried, perform
recovery method 3 or 1.
3) If the command is terminated with a different error when retried, execute the
recovery processing procedure for that error.
5 1) After waiting about 1 second, reissue the original command (Retry).
2) If it doesn't recover after 10 retries, perform recovery method 1.
6 1) Reissue the original command (Retry).
2) If it doesn't recover after 10 retries, perform recovery method 3.
7 1) Reissue the original command (Retry).
2) If it doesn't recover after 10 retries, perform recovery method 1.
8 1) If the DTE flag in the MODE SELECT parameter is "0," perform recovery
method 0.
2) If the DTE flag in the MODE SELECT parameter is "1," execute one of the
following according to the content indicated by the sense data.
− If the "Valid" bit is "1," and if the address of the final data block in the
data block group in the area specified in the command is indicated in the
information field, perform recovery method 0.
− If the "Valid" bit is "0," or even if the "Valid" bit is "1," but the address of
a data block which is not that of the final data group in the area specified
in the command is indicated in the information field, reissue the original
command.
3) If this error (Other than a positioning error [15-xx]) occurs repeatedly in the
same data block, implement alternate block allocation processing (shown in
Section 6.4).