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The start of execution timing for this automatic readjustment
operation is ordinarily impossible for the INIT to predict. The
automatic readjustment operation is performed when there is no
command being executed or waiting in the queue, but execution of
commands issued immediately after the HDD starts a readjustment
operation is caused to wait until the readjustment operation is
completed.
2.8.5 Abort processing
Abort measures which can be performed by the INIT are as shown below.
HARD RESET
LOGICAL UNIT RESET
CLEAR TASK SET
ABORT TASK SET
ABORT TASK
Table 2.9 Comparison between SAS and SCSI about definition
Definition by SAS
HARD RESET
LOGICAL UNIT RESET
CLEAR TASK SET
ABORT TASK SET
ABORT TASK
Each abort processing operation performs abort processing for the specified
nexus.
Nexus
I: INIT
T: TARG
L: Logical unit
Q: Queue tag
Each processing operation is outlined as follows:
C141-C013
2.8 Command Processing Exceptions
Definition by SCSI
Comparable to SRST
Bus Device Reset Message
Clear Task Set Message
Abort Task Set Message
Abort Task Message
119
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