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

DELETE RDEVICE
DELETE RDEVICE
►►
DELete
Authorization
Purpose
Operands
Usage Notes
Responses
RDEVice
rdev
rdev1-rdev2
Privilege Class: B
Use DELETE RDEVICE to delete one or more real device control blocks (RDEVs)
on the system. An RDEV is a piece of storage associated with a real device that
contains information about that device’s features and status. Thus, when you issue
the DELETE RDEVICE command, you are actually deleting a piece of storage, not
an actual real device.
To delete an actual real device, use the DELETE DEVICE or IODEVICE command
(page 223).
rdev
rdev1-rdev2
is the number of the real device whose RDEV you want to delete. Each rdev
must be a 1- to 4-digit hexadecimal number between X'0000' and X'FFFF'. You
can specify a single device address or a range of device addresses.
1. Before you can delete a real device control block (RDEV), you must take the
device and subchannel associated with this RDEV offline. To take a device
offline, use the VARY (Real Device) command (page 1710). To take a
subchannel offline, use the VARY SUBCHANNEL command (page 1714).
2. To display the status of one or more real devices, use the QUERY (Real
Device) command (page 955).
Note: If your processor is in LPAR mode, the QUERY (Real Device) command
displays the status of the device only if you issue the QUERY command
in the partition that owns the device. If you issue the QUERY command
in one of the other partitions, CP gives you a message stating that the
device does not exist.
3. To create a real device control block, use the:
a. SET RDEVICE command (page 1333) with the proper device
characteristics, and
b. VARY (Real Device) command (page 1710) to bring the device online.
Response 1:
228 z/VM: CP Commands and Utilities Reference
To delete real device control block 300 from your system, enter the following:
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