DISMOUNT



DISMOUNT

     Causes a volume set that was explicitly reserved by the user
     (with a MOUNT or VSRESERVE command) to be released. The
     corresponding new command is VSRELEASE.

SYNTAX

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

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.

This command may be issued from a session, job, or in BREAK. It may not
be used from a program. Pressing [Break] has no effect on this command.
You must have UV (Use Volumes) or CV (Create Volumes) capability to use
this command.

OPERATION

     The DISMOUNT command  allows you to release a volume set
     that you explicitly reserved using the MOUNT or VSRESERVE
     command. You can request a release only for a volume set
     that you have reserved; you cannot alter the status of the
     volume set for other users.

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

     MPE/iX uses a new naming convention for volume sets.  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.

     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 HP users, MPE/iX will,
     however, accept the naming convention that was used for MPE
     V/E private volumes.  Thus DISMOUNT V.G.A will succeed.
     And DISMOUNT 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, VSRELEASE 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.  VSRELEASE
     V.G.A will succeed only if a volumeset 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

     It is strongly recommended that you avoid using the MPE V/E
     naming convention and the xxMOUNT 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 will attempt to
     access a volume set named X.logongrp.logonacct -- which may
     or may not be your intention.


EXAMPLE(S)

     To release the volume set MYSET.B.C, that you previously
     reserved with a MOUNT or VSRESERVE command, enter

     DISMOUNT MYSET.B.C

     You may, as an alternative, use the new VSRELEASE command

     VSRELEASE MYSET.B.C

ADDITIONAL INFORMATION

Commands:   MOUNT, VSRESERVE, VSRELEASE

Manuals :   Volume Management Reference Manual (32650-90045)