| 0 |
0 |
SMF42VOL |
6 |
EBCDIC |
Volume serial number. |
| 6 |
6 |
|
2 |
|
Reserved. |
| 8 |
8 |
SMF42DEV |
4 |
binary |
Device number. |
| 12 |
C |
SMF42DB1 |
1 |
binary |
Device status flags, byte 1 - Bit
- Indicates
- 0-1
- Device cache status
- Format
- Meaning
- 00xxxxxx
- Caching is activated.
- 01xxxxxx
- Unused.
- 10xxxxxx
- Deactivate pending by explicit host system request. Transfer of
modified data to DASD has failed.
- 11xxxxxx
- Caching deactivated is unavailable.
- 2-3
- Fast write status
- Format
- Meaning
- xx00xxxx
- Fast write is activated.
- xx01xxxx
- Unused.
- xx10xxxx
- Fast-write deactivate pending. Transfer of data to DASD has failed.
- xx11xxxx
- Fast write deactivated.
- 4-7
- Duplex pair flags
- Format
- Meaning
- xxxx1xxx
- Primary of duplex pair.
- xxxxx1xx
- Secondary of duplex pair.
- xxxxxx00
- Duplex pair available.
- xxxxxx01
- Duplex pair is pending (copy to establish duplex pair is in progress
or failed).
- xxxxxx10
- Failed duplex by command.
- xxxxxx11
- Failed duplex by subsystem.
|
| 13 |
D |
SMF42DB2 |
1 |
binary |
Device status flags, byte 2 - Format
- Meaning
- 00xxxxxx
- No pinned data exists for the device, and fast write was not suspended.
- 01xxxxxx
- Pinned data exists for the device, but fast write was not suspended.
- 10xxxxxx
- Reserved.
- 11xxxxxx
- Pinned data exists for the device, and fast write was suspended.
- xxXXXXXX
- Channel connect address for other device in duplex pair.
|
| 14 |
E |
|
2 |
|
Reserved. |