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

Usage Notes
DETAILS
displays detailed information about real DASD.
QUERY DASD
rdev
rdev1-rdev2
is the real device number (rdev), a list of real device numbers (rdev rdev rdev),
or a range of real device numbers (rdev1-rdev2).
For DASD attached to a noncaching storage control, the information provided
is:
v Control unit type and model
v Device type and model
v Volume serial number (VOLSER).
For DASD attached to a caching storage control (see Usage Notes), the
following additional information is provided:
v Caching status for subsystem and device
v Nonvolatile storage status
v DASD fast write device status
v Cache fast write subsystem status
v Pinned data status
v Channel connection address (CCA)
v Director to device connection (DDC) address
v Duplex information
v Concurrent Copy (CONCOPY) session information
v Peer-to-Peer Remote Copy (PPRC) information.
DRAINing
specifies the devices for which status is to be displayed, if they are currently
draining. If no real device list is supplied, all DASD is examined.
FREe
indicates all free DASDs. A free device is one that is not currently in use by a
user or the system and is specified as neither ACTIVE nor OFFLINE.
OFFline
indicates all offline DASDs. An offline device is one that is specified as neither
ACTIVE nor FREE. The offline response will also show offline devices which
are quiesced.
QUIesced
indicates all quiesced DASD. A quiesced device is an offline device which
cannot be varied online until a resume request is received for the device.
RESERVE userid
indicates all reserved DASD defined as full-pack minidisks. If you specify userid,
only devices attached to that user’s virtual machine are indicated.
SYStem
indicates the DASDs in use by the system. A system device is always active.
volid
specifies the volume identification of a DASD whose status is to be displayed. If
a volume has a nonstandard label, the volume ID reported is unpredictable.
1. The DASD DETAILS function is not supported for caching models of the 3880
storage control (Models E21, G21, J21, H21, D23, E23, G23, J23, and H23)
and produces error message HCP332E instead of a response. For these
devices, you should use the QUERY CACHE rdev command.
Chapter 2. CP Commands 767