DETACH CHANNEL Use the DETACH CHANNEL co.mand to detach a dedicated channel fro. a user
when the channel pathis no longer required for virtual machine
operations. If DETACHCHANNEL is issued prior to the normal completion
ofI/O activities on the dedicated channel path, those activities are
terminated. Theformat of the DETACH CHANNEL command is:
DETach CHANnel c [From]{US;rid} CHANIEL c FROM is the real address of the channel that is to be }
specifies the user identification of the virtual machinefrom which the channel is to be detached. If the optional keyword FROM is omitted, the userid cannot be FROM, FRO, FR, or F. If
the DETACHCHAIIEL command is invoked by a class B user to
detach a channel from hisown machine, an asterisk (*) may be used. !2!!: A DETACH CHAINEL command followed immediately by an
ATTACHCHANIEL command may result in a message stating that
the specified channel is in use. DETACHCHANNEL processing
causesI/O to be asynchronously scheduled for each dedicated
device; DETACH CHANNEL processing does not for all I/O to
complete prior to returning control,to the: terminal operator. A subsequent ATTACH CHANNEL command may fail due to this timing situation.
CHANNEL c DETACHEDBY operator
is sent to the user from whose virtual machine the channel is
being detached.CHANIEL c DETACHED userid
is sent to the operator issuing the co.mand.CHANNEL c DETACHED userid BY operator
is sent to theprimary system operator if he did not issue the
command.Section 3. CP Commands 67
when the channel path
operations. If DETACH
of
terminated. The
DETach CHANnel c [From]
specifies the user identification of the virtual machine
the DETACH
detach a channel from his
ATTACH
the specified channel is in use. DETACH
causes
device; DETACH CHANNEL processing does not
complete prior to returning control
CHANNEL c DETACHED
is sent to the user from whose virtual machine the channel is
being detached.
is sent to the operator issuing the co.mand.
is sent to the
command.