Fujitsu MCJ3230SS manual 40 RELEASE command, 41 REQUEST SENSE command

Models: MCJ3230SS

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4.3.8 RELEASE command

Host Interface

4.3.8 RELEASE command

Table 4.40 RELEASE command

Bit

7

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (17h)

 

 

 

1

 

LUN

 

 

 

 

 

 

Reserved

 

 

2-5

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The RELEASE command releases the ODD reserved by the INIT that issued this command. When any of the following conditions is met, the command ends with GOOD status but it does not affect the reserved status of the ODD:

The reserved status created by the INIT that has issued this command is not in the ODD.

The reserved status of the type of release target specified by CDB of this command is not in the ODD.

The specified ODD may is reserved for another SCSI device.

Any values specified for CDB bytes 1 to 5 are ignored. However, INIT should specify 00h for these bytes.

In terms of the entire ODD (logical unit), the RELEASE command releases any reserved status for which the INIT that issued the command has reservation authority.

4.3.9 REQUEST SENSE command

Table 4.41 REQUEST SENSE command

Bit

7

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (03h)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

LUN

 

 

 

 

 

 

Reserved

 

 

2-3

 

 

 

 

 

Reserved

 

 

 

4

 

 

 

 

Allocation Length

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

Reserved

 

 

 

The REQUEST SENSE command transfers sense data to the INIT. Sense data indicates detailed error information related to the command for which an error was previously reported. If no error was previously reported for a command, Sense Key indicates NO SENSE.

When issuing the REQUEST SENSE command to detect the device status, first issue the TEST UNIT READY command, then issue the REQUEST SENSE command.

Allocation Length specifies the length of sense data to be transferred, in bytes. If 0 is specified, the command does not transfer any data and ends normally.

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C156-E224-01EN

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Fujitsu MCJ3230SS manual 40 RELEASE command, 41 REQUEST SENSE command