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LDISMOUNT

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Cancels a previously issued LMOUNT or VSRESERVE command. This informs the system that the volume set is no longer reserved system-wide. The equivalent native mode command is VSRELEASESYS. (Native Mode)

Syntax

LDISMOUNT [{ * | | volumesetname }] [,groupname [.acctname]]

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. The volumesetname can be a maximum of 8 characters.

groupname

Used only for compatibility with MPE V/E. The groupname can be a maximum of 8 characters.

acctname

Used only for compatibility with MPE V/E. The acctname can be a maximum of 8 characters.

Operation Notes

The LDISMOUNT command negates a previously issued LMOUNT or VSRESERVE command. It informs MPE/iX that the volume set is no longer reserved system-wide.

Volume sets in MPE/iX are not tied to groups and accounts. This is different from the MPE V/E scheme of disk partitioning.

Table 4-3 “Command Acceptance of Naming Conventions - LDISMOUNT Command” is a comparison of naming conventions for MPE/iX volume sets and MPE V/E 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.

Table 4-3 Command Acceptance of Naming Conventions - LDISMOUNT Command

SpecifyMPE V/E xxxMOUNT Command AccessesMPE/iX VSxxxxxx Command Accesses
myset.grp.acctThe volume set named myset.grp.acct.The volume set named myset.grp.acct.
mysetThe volume set named myset.logongrp.logonacct.The volume set myset.
*.grp.acct.The home volume set of the group grp in account acct.Causes an error.
myset_grp_acctError (name component longer than eight characters).The volume set named myset_grp_acct.
m_g_aThe volume set named m_g_a.logongrp.logonacct, provided it exists. If it does not exist, an error is reported.The volume set name m.g.a.

 

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

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

MPE/iX does, however, accept the naming convention that was used for MPE V/E private volumes. Therefore, LDISMOUNT V.G.A succeeds, and LDISMOUNT V accesses the same volume set, provided you are logged on to account A, group G. The MPE V/E commands are able to "default" the logon account and group.

However, VSRESERVE V succeeds only if there is a volume set V in existence. The MPE/iX commands do not call up any default specifications for group and account. VSRESERVE V.G.A succeeds only if a volumeset V.G.A is online. With MPE/iX VSxxxxxx commands, the .G.A component of this name is interpreted as a string, neither more nor less specific than _G _A.

If a volume set is named according to the MPE V/E naming convention (V.G.A), you must use an unambiguous reference when using the MPE/iX volume set commands.

It is recommended that you not use the MPE V/E naming convention and the xxxMOUNT commands. Instead use the MPE/iX naming convention and the VSxxxxxx commands. Alternating between MPE V/E and MPE/iX commands may lead to 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.

Use

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

Examples

To release a volume set named DATABASE.PAYROLL.ACCTNG, enter:

 LDISMOUNT DATABASE.PAYROLL.ACCTNG

You may also use the VSRELEASESYS command:

 VSRELEASESYS DATABASE.PAYROLL.ACCTNG

Related Information

Commands

MOUNT, , LMOUNT, DISMOUNT, DSTAT, VSRESERVE, VSRELEASE

Manuals

Volume Management Reference Manual

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