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

Usage Notes
Responses
RDEV
indicates that the cache settings for one or more real devices are being queried.
rdev
rdev-rdev
identifies the real device numbers whose cache eligibility is being queried.
DETails
indicates that cache settings for any active minidisks on the real device(s) being
queried will be displayed in the response.
MDIsk
indicates that the cache settings for active minidisks are being queried.
Userid *
Userid userid
is the user ID of the virtual machine for which you want to query minidisk cache
settings. If omitted or specified as an asterisk (*), CP uses the user ID of the
virtual machine issuing the command. For the class B command, if DRCT or
DIRectory is not specified, the userid specified must be logged on.
vdev
vdev-vdev
identifies the virtual device number or the range of virtual device numbers for
which cache settings are to be queried. For the class B command, the virtual
device numbers specified correspond to the userid’s current configuration if the
DIRECTORY or DRCT option is not specified and to the userid’s directory entry
if the DIRECTORY or DRCT option is specified. For the class G command, the
virtual device numbers specified correspond to the userid’s directory entry.
DIRectory
DRCT
indicates that the virtual device numbers correspond to the userid’s directory
entry. For the class B command, if DRCT or DIRectory is not specified, the
userid specified must be logged on.
INSert
queries a user’s ability to insert information into the cache.
1. In z/Architecture mode, MDC uses host real storage above the 2G line.
Response 1:
The following response is issued when you specify Query MDCache.
Minidisk cache status for system
Storage MDC min=nnnM max=nnnM, usage=ppp%, bias=b.bb
Xstore MDC min=nnnM [(nnnM pending)] max=nnnM
[(nnnM pending)], usage=ppp%, bias=b.bb
QUERY MDCACHE
min=nnnM
indicates the current minimum value for the size of minidisk cache in
megabytes. For expanded storage, this may change as the CP partition size
changes.
(nnnM pending)
identifies the amount by which the specified value exceeds the current CP
partition size. This means that the minimum/maximum amount of Expanded
Storage for MDC could not be fully satisfied. When the missing amount
Chapter 2. CP Commands 867