z/VM: CP Commands and Utilities Reference - z/VM - IBM

Usage Notes
When loading CP for z/VM V5R1 or later, the ORIGIN option is accepted, but
CP will relocate itself to location X'2000'.
Iplparms
specifies information that is to be passed to the loaded program by
SHUTDOWN.
text/?
specifies information that is to be passed to the loaded program by
SHUTDOWN. The information will replace all currently specified IPL
parameters.
SHUTDOWN
Note: When you enter text on the command line, IPLPARMS must be the
last option you specify. The format of the IPL parameters depends
entirely on the options supported by the loaded program. For a list of
IPL parameters supported by CP, see the z/VM: CP Planning and
Administration book.
? causes SHUTDOWN to prompt the operator for up to 3 lines of data to be
read from the console. A null entry may be used to signify that all
parameters have been entered.
SHUTDOWN command processing will accept a "?" or a "? " (a "?" followed
by a blank) as valid arguments to initiate the prompting sequence for the
IPL parameters. All other arguments are assumed to be IPL parameters and
will not initiate the prompting sequence.
1. Because SHUTDOWN stops all virtual machine operations, you should warn all
users of an impending shutdown as early as possible so that they may quiesce
their systems in an orderly manner.
You can use the SET LOGMSG, MESSAGE, and WARNING commands to
inform the affected users.
Note: CMS file pool servers shut down automatically without operator
intervention unless a server has been explicitly disabled from receiving a
shutdown signal from CP. For more information, see z/VM: CMS File
Pool Planning, Administration, and Operation.
2. Specifying SHUTDOWN with no operands causes the system to come to an
orderly termination. When the termination completes, CP enters a disabled wait
state.
3. SHUTDOWN terminates all outstanding Concurrent Copy (CONCOPY)
sessions, and disbands the path groups of all DASD if CP is running in a native
machine.
4. If REIPL is specified but rdev is omitted, the current system residence device is
re-IPLed.
5. When REIPL is specified, CP attempts to do an automatic warmstart. If the
automatic warmstart is to succeed:
a. It must have its warmstart and checkpoint cylinders defined in the same
location that the current system does.
b. The new CP module must contain the same versions of control blocks that
are used by the checkpoint or warmstart process, such as HCPCKIBK,
HCPCKPBK, HCPPFXPG, HCPSYSCM, HCPRSPBK, HCPSPFBK, and
HCPSPMBK.
Chapter 2. CP Commands 1435