pr
pw
pm
Page of GC20-1801-10 As Updated March 3, 1980 by TNL GN25-0776 Directory Program
MR specifies that a write link is to be given to the disk
unless another user already has write access to it. In
this case, a read link is given to the user and the "DEV xxxx FORCED R/O" message is issued. MW specifies that a write link is to be given to the disk
in any case. V specifies that CP's virtual reserve/release support is
to be used in the I/O operations for the specified
device. The V is appended to the immediate right of the
primary access mode specification (or the alternate
access mode specification, if any). Thus, if the mode
specified for a minidisk is MWV, then the mini disk will
function with write linkage using CP's virtual
reserve/release functione
If a mode specification is omitted from the statement, it
defaults to W. is the password that allows sharing in read mode (a 1- to
8-character field).
is the password that allows sharing in write mode (a 1-to
8-character field).
is the password that allows sharing in multiple-write mode (a
1- to 8-character field).
1. A write password (pw) cannot be specified without a read password
(pr); a multiple-write password (pm) cannot be specified without 1:oth a read password (pr) and a write password (pw).
2. If a password of ALL is used for pr, pw, or pm,
the owner of the minidisk is allowed to link
without specifying a password.
a user other than
to this minidisk
3. When MSS support is used
t the volume serial number may specify an MSS 3330V volume. In this case, the volume serial number must be
six characters long.
4. If the MSS communicator is initialized when the virtual machine
logs on and the system volume having a volume label of 'volser' is
not mounted, then VM/370 will attempt to find an available SYSVIRT 3330V and mount 'volser' on that device.
5. If virtual Reserve/release processing is requested, minidisk users
with read or write access are prevented from accessing the minidisk
if the minidisk is reserved by another virtual machine. MDISK 230 3330 5 10 WORKOl W ALL WRITE is an MDISK statement for a minidisk with read/write access to 10 cylinders located on a real 3330 disk volume labeled WORK01, beginning at real cylinder 5. A user other than the owner of this
minidisk can link to it in read status without specifying a read
password, but must specify a password of 'WRITE' in order to gain
write access to it. Part 2. Defining Your VM/370 System 209 -------.,

March 3, 1980 Directory Program MDISK 191 2314 50 15 CPDSK4 W RDPASS WRX2* is an MDISK statement for a minidisk with read/write access to 15
cylinders located on a real 2314 labeled CPDSK4 starting at cylinder 50. A read password of RDPASS and a write password of WRX2* are
provided. This allows the other users to access the minidisk through
the directory LINK statement (see the description of the LINK
statement in this section) or the LINK command.
The SPOOL control statement specifies the unit record device that is to
be spooled. Multiple readers, punches, and printers may be specified,
each on a separate SPOOL card. The format of the SPOOL control
st atellent is: .-- , I Spool cuu devtype (class] L- I J
cuu is
de vtype
class
the virtual device
note that follows
control statement
channel. For CMS, used:
PRINTER OOE PUNCH 000 READER OOC is the device type: 1403 2501 1443 3203 3211 2540 R(EADER] 2540 P( UNCH] 3525 3505 address (1-to 3-hexadecimal digits). The
the description of ECMODE in the OPTION describes a restriction on specifying the
the followin9 unit record addresses must be
is a 1-character spooling class. The characters A through Z,
o through 9, and * are valid. For spool output devices, the
class governs the punching or printing of the real spooled
output. If this operand is omitted, the default class A is
used. This operand is required for all output devices defined
on the spool record. For spool input devices, the class
controls access to spool files by virtual card readers. The
default class for readers is an asterisk (*), which means the
reader can process any class of spool file.
For example: SPOOL ODE 1403 A
specifies a SPOOL record for a virtual 1403 at address ODE. The output class is A. 210 IBM VM/370 Planning and System Generation Guide