| WRITE ATTRIBUTE | 8Dh |
The WRITE ATTRIBUTE command allows an application client to write attribute values to MAM (Medium Auxiliary Memory). Application clients should issue READ ATTRIBUTE commands before using this command to discover what support the device server has for MAM.
Illegal Field | Deferred Error | Unit Attention | Media Access |
For this command to be executed, there must be a tape in the drive, even if it is only partially loaded.
Command descriptor block:
|
| 7 | 6 | 5 |
| 4 | 3 | 2 | 1 | 0 |
|
|
|
|
|
|
|
|
|
|
|
| 0 |
|
|
|
| Operation Code (8Dh) |
|
|
| |
| 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Reserved (0) |
|
|
|
| |
| 4 |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| ||
| 5 |
|
|
| Volume Number (0) |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
| 6 |
|
|
|
| Reserved (0) |
|
|
|
|
|
|
|
|
|
|
|
|
| ||
| 7 |
|
|
| Partition Number (0) |
|
|
| ||
| 8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Reserved (0) |
|
|
|
| |
| 9 |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
| 10 | (MSB) |
|
|
| Parameter List Length |
|
|
| |
|
|
|
|
|
|
|
|
| ||
| 13 |
|
|
|
|
|
| (LSB) | ||
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
| 14 |
|
|
|
| Reserved (0) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 15 |
|
|
|
| Control |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CDB fields:
Volume The number of the volume within the MAM. The number of volumes of the MAM must be
Number equal to that of the tape. In the case of Ultrium, the only has a single volume, so this field is be set to 0.
Partition The number of the partition within the MAM. The number of partitions of the MAM must
Number be equal to that of the tape. In the case of Ultrium, the only has a single partition, so this field is be set to 0.
Parameter List The length in bytes of the parameter list contained in the
Length | 0 The |
| |
| n The length in bytes of the parameter list contained in the |
|
|
180 Commands