MOUNT

Generated from C.60.01 /SYS/PUB/CICAT last modified on Thu Jan 11 09:18:52 2001

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MOUNT


     Sends a request to the system to reserve a volume set (keep it
     on line).  The set must be on line in order to have the command
     take effect.  The corresponding new command is VSRESERVE.

SYNTAX


     MOUNT[{*             }][.groupname[.acctname]]
           {volumesetname }

           [;GEN=[genindex]]

NOTE


For the commands MOUNT, DISMOUNT, LDISMOUNT, and LMOUNT, a volume
set name such as V.G.A can have no more than eight characters in any
part of the name.  If the length of V, G, or A exceeds eight characters,
an error is reported.


PARAMETERS


* or         Specifies the home volume set for the group and
                    account specified, or for the logon group and
                    account if groupname or groupname.acctname is not
                    specified.

volumesetname       An artificial component of a volume set name used to
                    maintain backward compatibility with MPE V/E.

groupname           Used only for compatibility with MPE V/E.

acctname            Used only for compatibility with MPE V/E.

genindex            A value from -1 to 32,767 specifying which
                    generation of the home volume set is to be reserved.
                    A value of -1 indicates that any generation is
                    permitted. If omitted, the system ignores the
                    generation when attempting to satisfy the MOUNT
                    request.


OPERATION


     This command reserves a specific volume set for use.  It
     notifies the system that the volume set is to remain on line
     and is not to be taken off line by a VSCLOSE command.

     Volume sets in MPE/iX are not tied to groups and accounts (this
     differs from the MPE V/E scheme of disk partitioning).

     The MPE/iX naming convention for volume sets differs from
     the MPE V/E naming convention for private volumes.  MPE/iX
     volume set names may consist of any combination of alphanumeric
     characters, including the underbar (_) and the period (.).  The
     name must begin with an alphabetic character and consist of no more
     than 32 characters.

       Command Acceptance of Naming Conventions - Mount Command
      ____________________________________________________________
     |Specify       |MPE V/E xxxMOUNT        |MPE/iX VSxxxxxx     |
     |              |Command Accesses        |Command Accesses    |
     |______________|________________________|____________________|
     |myset.grp.acct|The volume set named    |The volume set named|
     |              |myset.grp.acct.         |myset.grp.acct      |
     |______________|________________________|____________________|
     |myset         |The volume set named    |The volume set      |
     |              |myset.logongrp.logonacct|myset.              |
     |______________|________________________|____________________|
     |*grp.acct     |The home volume set of  |Cause an error.     |
     |              |the group grp in account|                    |
     |              |acct.                   |                    |
     |______________|________________________|____________________|
     |myset_grp_acct|Error (name component   |The volume set named|
     |              |longer than eight char- |myset_grp_acct.     |
     |              |acters).                |                    |
     |______________|________________________|____________________|
     |m_g_a         |The volume set named    |The volume set named|
     |              |m_g_a.logongrp.logonacct|name m_g_a.         |
     |              |provided it exists. If  |                    |
     |              |it does not exist, an   |                    |
     |              |error is reported.      |                    |
     |______________|________________________|____________________|


     In MPE V/E, the name V.G.A indicates that V names a volume set,
     that G is the name of a group, and that A is the name of an
     account.

     MPE/iX will accept that name in that form, but no interpretation
     is made as to the referencing of G and A.  Instead, MPE/iX treats
     V.G.A as a single, long string name, just as it would treat
     A_VERY_LONG_NAME_FOR_SOMETHING.

     As a convenience to established Hewlett-Packard users, MPE/iX will,
     however, accept the naming convention that was used for MPE V/E
     private volumes. Thus MOUNT V.G.A will succeed.  And MOUNT V will
     access the same volume set, provided you are logged on onto account
     A, group G. The older commands are able to "default" the logon
     account and group.

     However, VSRESERVE V will succeed only if there is a volume set V
     in existence.  The new commands will not call up any default
     specifications for group and account.  VSRESERVE V.G.A will
     succeed only if a volume set V.G.A is on line.  With all new
     VSxxxxx commands, the .G.A component of this name is interpreted as
     a string, neither more nor less specific than _G _A.

     Be aware, though, that if a volume set is named according to the
     old MPE V/E naming convention (V.G.A), then you must use an
     unambiguous reference when using the MPE/iX volume set commands

     Various user commands which give you access to your logon group's
     home volume set will implicitly initiate reservation requests if
     the volume set is not reserved already.  An example of one of these
     commands (BUILD) is:

     BUILD VFILE;DISC=500,10,1;REC=-80;DEV=VCLASS1

     To issue a reserve request programmatically, you may issue an FOPEN
     call referencing a file residing on an unreserved volume set; this
     causes an implicit user initiated reserve request. An FOPEN reserve
     remains in effect until a corresponding FCLOSE intrinsic call is
     issued.  The programmatic request is used when a single job/session
     step requires a certain volume set.  Refer to the MPE/iX Intrinsics
     Reference Manual (32650-90028) for a description of programmatic
     reserve request.

     It is recommended that you avoid using the MPE V/E naming
     convention and the xxxMOUNT commands. Instead use the MPE/iX naming
     convention and the new VSxxxxxx commands.  Alternating old and new
     commands may lead to confusion and in some cases may lead you into
     time consuming errors.  For example, MOUNT X used in a job stream
     attempts to access a volume set named X.logongrp.logonacct,
     which may or may not be your intention.

     This command may be issued from a session, job, program, or in
     BREAK.  Pressing [Break] has no effect on this command. You must
     have UV (Use Volumes) or CV (Create Volumes) capability to use this
     command.


EXAMPLE(S)


     You are logged onto account MYACCT in group GRP.  To request the
     system operator to reserve volume set MYSET in that group and
     account, with a generation index of 43, enter:

     MOUNT MYSET;GEN=43

     If you are logged on in another group.account, enter:

     MOUNT MYSET.GRP.MYACCT;GEN=43

ADDITIONAL INFORMATION


Commands: VSRESERVE, VSRELEAE

Manuals : MPE/iX Intrinsics Reference Manual (32650-90028)
          Volume Management Reference Manual (32650-90045)

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