SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

3. Display the changed status:
-> STATUS DISK $D0203-*
STORAGE - Status DISK \WAGER.$D0203-*
LDev Path Status State Substate Primary Backup
PID PID
104 PRIMARY ACTIVE STARTED 3,35 2,107
104 BACKUP INACTIVE STARTED 3,35 2,107
104 MIRROR ACTIVE STARTED 3,35 2,107
104 MIRROR-BACKUP INACTIVE STARTED 3,35 2,107
$D0203 also changes primary processors in because:
1. The disk process executing in processor 2 attempts to access $D0203-P.
2. The path to $D0203-P on the X fabric leads through SAC 2. Because of the PRIMARY command
on the other disk, this SAC is now owned by processor 3. Because the disk process is executing
in processor 2, the disk access fails.
3. The disk process detects the loss of SAC ownership, changes processors, and tries to access
$D0203 through processor 3. Because this SAC is now owned by processor 3, the disk access
succeeds.
4. The disk process, now executing in processor 3, attempts to access $D0203-M.
The path to $D0203-M on the Y fabric leads through SAC 1. Because this SAC is also owned
by processor 3, the disk access succeeds.
This process affects all disk processes that use these SACs.
Disk Load Balancing on G06.10 and Earlier RVUs 127