I/O Queuing Configuration Data Section

This section contains one entry per channel path, described by triplet R783CPDS in the I/O Queuing Configuration control section.

Offsets Name Length Format Description
0 0 R783CPID 1 binary Channel path identifier.
1 1 R783CPST 1 binary Channel path status
Bit
Meaning when set
0
Channel path installed
1
Channel path online
2
Channel path varied
3
Channel path offline to all devices of the LCU
4
Channel path connection to all devices of the LCU altered by VARY PATH command during interval
5
Measured channel path data incorrect
6
Channel path is DCM managed
7
CHPID manipulated, requiring data reset
2 2 R783CUN 2 binary Number of control units attached.
4 4 R783CU1 2 binary First control unit attached.
6 6 R783CU2 2 binary Second control unit attached.
8 8 R783CU3 2 binary Third control unit attached.
10 A R783CU4 2 binary Fourth control unit attached.
12 C R783CUB 4 binary Number of times control unit was busy.
16 10 R783PT 4 binary Number of times channel path was taken.
20 14   4   Reserved.
24 18 R783DPB 4 binary Number of times that the Director Port was busy.
28 1C R783CBT 4 binary Delay time of an I/O request because the control unit was busy.
32 20 R783CMR 4 binary Initial command response time until the first command is indicated as accepted by the device.
36 24 R783SBS 4 binary Switch busy count summation: contains the switch busy counts received for all partitions.
40 28   4   Reserved.
44 2C R783CPXF 1 binary Channel path extended flags
Bit
Meaning when set
0
Extended I/O measurement-block data available
1-7
Reserved.
45 2D R783CPAT 1 binary Path attributes
Value
Meaning
0
Not specified for this path.
1
Preferred path.
2
Non-preferred path.
46 2E   2   Reserved.