LMOUNT


LMOUNT


Requests a logical reservation of a volume set. This informs the
system that the volume set is to be reserved system-wide. The
corresponding new command is VSRESERVESYS.

SYNTAX

            {*            }
LMOUNT[{ BLANK }][.groupname[.acctname]][;GEN=[genindex]]
{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 BLANK          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 will ignore the
generation when attempting to satisfy the MOUNT request.


OPERATION

     When the console operator executes this command, all disk drives
containing members of the specified volume set become RESERVED.
Each volume set is logically attached to the drive until an
LDISMOUNT command is executed, at which time the disk drive is no
longer reserved on a system-wide basis. A VSCLOSE may then be
issued to remove the volume set.

Executing an LMOUNT command does not prevent users from issuing a
MOUNT command for the volume set in question. Users may issue a
DISMOUNT command for the specified volume set, but doing so will
have no effect; the LMOUNT command takes priority over a general
user command.

System users issue mount requests implicitly through their
programs, or explicitly with a MOUNT command.

If the Mountable Volumes Facility was enabled with VMOUNT ON,
AUTO, MPE/iX will automatically attempt to satisfy the mount
request; the LMOUNT will succeed if the specified volume set is
physically connected to the system.

If the Mountable Volumes Facility was enabled with VMOUNT ON
(omitting the AUTO parameter), you must reply to your own mount
request, even though the volume set may already be mounted and in use.

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 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.

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.

This command may be issued from a session, job, program, or
in BREAK. Pressing [Break] has no effect on this command. It
is executable only at the console unless it is distributed to
users with the ALLOW command.


EXAMPLE(S)

     To reserve a volume set named DATABASE.PAYROLL.ACCTNG, enter

LMOUNT DATABASE.PAYROLL.ACCTNG

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

VSRESERVESYS DATABASE.PAYROLL.ACCTNG

ADDITIONAL INFORMATION

Commands:   LDISMOUNT, VSRESERVESYS

Manuals : Volume Management Reference Manual (32650-90045)