iSCSI - 10.3. SCSI 명령

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10.3. SCSI Command

10.3. SCSI 명령

The format of the SCSI Command PDU is:

SCSI 명령 PDU 의 형식은 다음과 같습니다:

Byte/ 0 | 1 | 2 | 3 | / | | | | |0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7| +---------------+---------------+---------------+---------------+ 0|.|I| 0x01 |F|R|W|. .|ATTR | Reserved | +---------------+---------------+---------------+---------------+ 4|TotalAHSLength | DataSegmentLength | +---------------+---------------+---------------+---------------+ 8| Logical Unit Number (LUN) | + + 12| | +---------------+---------------+---------------+---------------+ 16| Initiator Task Tag | +---------------+---------------+---------------+---------------+ 20| Expected Data Transfer Length | +---------------+---------------+---------------+---------------+ 24| CmdSN | +---------------+---------------+---------------+---------------+ 28| ExpStatSN | +---------------+---------------+---------------+---------------+ 32/ SCSI Command Descriptor Block (CDB) / +/ / +---------------+---------------+---------------+---------------+ 48/ AHS (Optional) / +---------------+---------------+---------------+---------------+ x/ Header Digest (Optional) / +---------------+---------------+---------------+---------------+ y/ (DataSegment, Command Data) (Optional) / +/ / +---------------+---------------+---------------+---------------+ z/ Data Digest (Optional) / +---------------+---------------+---------------+---------------+