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

Supported objects are:
• “PRIMARY DISK Command” (page 264)
• “PRIMARY MON Command” (page 265)
• “PRIMARY POOL Command” (page 265)
• “PRIMARY SCSI Command” (page 266)
• “PRIMARY SUBSYS Command” (page 266)
• “PRIMARY TAPE Command” (page 267)
PRIMARY is a sensitive command.
PRIMARY DISK Command
The PRIMARY DISK command swaps the primary and backup processors for the disk process
controlling the specified physical or virtual disk. The current primary process becomes the backup
process, and the current backup process becomes the primary process, but the PRIMARYCPU and
BACKUPCPU values stay the same. The syntax is:
PRIMARY [ / OUT file-spec / ] DISK $disk
[ , cpunumber ] [ , FORCED ]
[ , POOL $pool ] [ , SEL state ]
[ , SUB { ALL | MAGNETIC | VIRTUAL } ]
Wild-card characters are supported.
OUT file-spec directs all SCF output to the specified file.
DISK $disk is the name of the disk.
cpunumber is the processor number of the processor that is to
become the primary processor. This decimal integer
must identify one of the two processors configured as
primary and backup processors for the device. If you
do not specify a processor number, the storage
subsystem manager determines which processors are
currently being used for the primary process and
backup process and swaps those processors. If you
specify the processor number of the current primary
processor, no change occurs.
FORCED (physical disks only) for G06.10 and earlier RVUs,
specifies that all disk processes using the same controller
as the specified disk must switch to the specified primary
processor.
Beginning with G06.11, the FORCED attribute is
ignored. Because SACs can be owned by more than
one processor, the PRIMARY command affects only the
IOP for the disk whose primary processor is being
swapped. Other disk processes are unaffected. For
more details, refer to “Managing Disks” (page 96).
POOL $pool specifies that the PRIMARY DISK command should be
performed only on disks associated with the specified
storage pool.
SEL state specifies that the command affects only devices in the
specified state.
264 Storage Subsystem Commands