Mrec Unit And Controller Reservations; Mrec Options; Mrec Commands - Control Data Corporation CYBER 170 Series Operator's Manual

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5. Enter MREC parameters in the following format.
K.optionl =valuel,option2=value2, ••• ,
optionn=value n •
The options entered (and error messages, if any)
are displayed on the lower portion of the left
screen K display.
6.
If it is desired to reset options to their default
values or to refresh the device descriptions on the
top portion of the left screen K display, type
K.RERUN.
Parameters can then be reentered.
Table 8-1 describes the parameters available and table 8-2
'describes the commands.
Option
ID=
EQ=
OP=x
8-4
TABLE 8-1. MREC OPTIONS
Description
One- or two-character machine ID of the
inoperative machine which is to be
processed. This option must be entered
before processing can take place.
EST ordinals of devices to process. Only
devices shared between the machine which
is down and the machine on which MREC is
running are processed. If the equipments
are entered that cannot be processed, they
are ignored. The form of the entry is
EQ=XXl,XX2,···,XX n •
or
EQ=ALL.
The latter form means that all devices
shared between this machine and the
i!1operative machine are to be processed.
Default is EQ~ALL.
This option may only be entered via the K
display (that is, it cannot be used if MREC
is called by control statement) and is to be
used only if a unit or controller cannot be
accessed by MREC due to physical
hardware reservations. Its use is illegal if
a unit reservation is not in effect.
x Description
R Directs MREC to release all uni t
reservations (via GRENADE
function, refer to the Installation
Handbook) for 844-n or 885
equipment. Refer to the next
note in this section.
Directs MREC to ignore certain
functions on the equipment for
which the reservation message
was issued. Functions that do not
require the unit to be accessed
will still be performed.
Refer to MREC Unit and Controller
Reservation later in this section.
TABLE 18-2. MREC COMMANDS
Command Description
GO. Directs MREC to proceed with
processing of the entered parameters.
RERUN.
Reinitializes the device descriptions
and parameters on the K display.
STOP. Terminates MREC and ends K display
interaction.
+ Toggles the right screen K display
between the K display instructions and
the second page of device descriptions
if there are more than 24 (decimal)
shared devices.
7. After the desired parameters have been entered,
initiate MREC processing by typing
K.GO.
When processing is coml?lete, the message
PROCESSING COMPLETE
is displayed at the bottom of the left screen.
8. After all MREC operations are complete, end the
utility by typing
K.STOP.
It
is also possible to call MREC and specify appropriate
options without the use of the K display. This is
accomplished via a single keyboard
en~ry
(under DSD or
DIS) in the following format.
X.MREC(optionl =valuevoption·2=value2, .•. ,
optionn=value n )
Option parameters
scribed in table 8-1.
The ID=parameter must be entered.
de-
When the MREC control statement is entered with
parameters, the K display is not activated but processing
occurs automatically. If an error occurs using this
procedure, the message
REQUEST *K* DISPLAY
appears on the DSD B display. Activate the K display and
continue as described in the preceding procedure.
MREC UNIT. AND CONTROLLER
RESERV ATIONS
When attempting to access a device, MREC may find the
controller access or unit reserved by another machine.
When this occurs, the following message is displayed on the
left screen
K
display.
EQxx,CHcc, CONTROLLER RESERVED.
or
EQxx,UNuu, UNIT RESERVED.
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