Updated: 11 December 1998

OpenVMS System Management Utilities Reference Manual

Enables or disables copy operations on physical devices specified when you mount a shadow set. Applicable only if you have the volume shadowing option. Refer to Volume Shadowing for OpenVMS.

Format

/COPY virtual-unit-name[:] /SHADOW=(physical-dev-name[:][,...])

/NOCOPY virtual-unit-name[:] /SHADOW=(physical-dev-name[:][,...])

Description

Instructs MOUNT to perform copy operations on shadow set members. You can mount shadow sets with /NOCOPY to test if proposed shadow set members are targets of copy operations. If any of the specified volumes is a target of a copy operation, the command quits without mounting any of the specified volumes (including those that did not require a copy operation).

The default qualifier is /COPY.

The /NOCOPY qualifier is similar to /CONFIRM. Use /NOCOPY to mount shadow sets in the site-specific startup command procedure SYS$MANAGER:SYSTARTUP_VMS.COM; use /CONFIRM for interactive mounting.

Example

$ MOUNT/NOCOPY DSA2: /SHADOW=($1$DUA4:,$1$DUA6:,$1$DUA7:) -
_$  SHADOWVOL DISK$SHADOWVOL
%MOUNT-F-SHDWCOPYREQ, shadow copy required 
%MOUNT-I-SHDWMEMFAIL, DUA7: failed as a member of the shadow set
%MOUNT-F-SHDWCOPYREQ, shadow copy required
      

This command shows how to use the /NOCOPY qualifier to check the status of potential shadow set members before any data is erased. The command instructs MOUNT to build a shadow set with the specified devices only if a copy operation is not required. Because the device DUA7 required a copy operation to become a member of the shadow set, the mount failed. You could reissue the command specifying /COPY to instruct MOUNT to build the shadow set providing the necessary copy operation.

Overrides the read-check or write-check option (or both) specified for a volume when it was initialized.

Format

/DATA_CHECK [=(keyword[,...])]

Keywords

READ

Performs checks following all read operations.

WRITE

Performs checks following all write operations.

Description

You can specify either or both of the keywords. If you specify more than one keyword, separate them by commas and enclose the list in parentheses.

If you specify the /DATA_CHECK qualifier without specifying a keyword, MOUNT defaults to /DATA_CHECK=WRITE.

Example

$ MOUNT/DATA_CHECK=READ CLEMENS$DBA2: SAM  BOOK
      

This command mounts a volume labeled SAM on CLEMENS$DBA2 and assigns the logical name BOOK. The /DATA_CHECK=READ qualifier overrides a previous INITIALIZE/DATA_CHECK=WRITE specification, so that subsequent read operations on BOOK are subject to data-checking operations.

Specifies the density at which a magnetic tape is to be written. This qualifier is valid only if you mount a tape specifying the /FOREIGN qualifier. If you change the density on a tape, the first operation on the tape must be a write.

Format

/DENSITY=keyword

The densities supported for tapes are shown in the following table.

Table 16-1 Keywords for Tapes

Keyword	Meaning
DEFAULT	Default density
800	NRZI 800 bits per inch (BPI)
1600	PE 1600 BPI
6250	GRC 6250 BPI
3480	IBM 3480 HPC 39872 BPI
3490E	IBM 3480 compressed
833	DLT TK50: 833 BPI
TK50	DLT TK50: 833 BPI
TK70	DLT TK70: 1250 BPI
6250	RV80 6250 BPI EQUIVALENT
NOTE: Only the symbols listed above are understood by TMSCP/TUDRIVER code prior to OpenVMS Version 7.2. The remaining symbols in this table are supported only on OpenVMS Alpha systems.
TK85	DLT Tx85: 10625 BPI---Cmpt III
TK86	DLT Tx86: 10626 BPI---Cmpt III
TK87	DLT Tx87: 62500 BPI---Cmpt III
TK88	DLT Tx88: (Quantum 4000)---Cmpt IV
TK89	DLT Tx89: (Quantum 7000)---Cmpt IV
QIC	All QIC drives are drive-settable only
TK85	DLT Tx85: 10625 BPI---Cmpt III
TK86	DLT Tx86: 10626 BPI---Cmpt III
TK87	DLT Tx87: 62500 BPI---Cmpt III
TK88	DLT Tx88: (Quantum 4000)---Cmpt IV
TK89	DLT Tx89: (Quantum 7000)---Cmpt IV
QIC	All QIC drives are drive-settable only
8200	Exa-Byte 8200
8500	Exa-Byte 8500
DDS1	Digital Data Storage 1---2G
DDS2	Digital Data Storage 2---4G
DDS3	Digital Data Storage 3---8-10G
DDS4	Digital Data Storage 4
AIT1	Sony Advanced Intelligent Tapes

Description

When you initialize a tape with the INITIALIZE command and do not specify a density, the tape is initialized at the default density for the media and drive you are using (usually the highest density available).

The density of a tape can only be changed if the tape is at beginning-of-tape (BOT). To change the density of a tape that has previously been recorded, the first operation must be a write. If the first operation on the tape is a read, the magnetic tape is set to the density at which the first record on the tape was recorded, no matter what density is specified with the /DENSITY qualifier.

Example

$ MOUNT/FOREIGN/DENSITY=TK87  MFA0: TAPE
      

This command mounts a tape on the MFAO: drive /FOREIGN and assigns it the logical name TAPE. The /DENSITY qualifier specifies that the tape is to be written at TK87.

/EXTENSION

Specifies the number of blocks by which disk files are to be extended on the volume unless otherwise specified by an individual command or program request.

Format

/EXTENSION= n

Parameter

n

Specifies a value from 0 to 65,535 to override the value specified when the volume was initialized.

Example

$ MOUNT/EXTENSION=64 DBA0: DOC WORK
      

This command mounts a volume labeled DOC on DBA0, assigns the logical name WORK, and specifies a default block extent of 64 for the files on WORK.

Indicates that the volume is not in the standard format used by the OpenVMS operating system.

Format

/FOREIGN

Description

Use the /FOREIGN qualifier when a magnetic tape volume is not in the standard ANSI format, or when a disk volume is not in Files--11 format.

If you mount a volume with the /FOREIGN qualifier, the program you use to read the volume must be able to process the labels on the volume, if any. The OpenVMS operating system does not provide an ancillary control process (ACP) to process the volume.

You must mount DOS--1 and RT--11 volumes with the /FOREIGN qualifier and process them with the Exchange utility (EXCHANGE). Refer to the OpenVMS Exchange Utility Manual.

The default protection applied to foreign volumes is RWLP (Read, Write, Logical I/O, Physical I/O) for the system and owner and no access for the group and world. If you also specify /GROUP, group members are also given RWLP access. If you specify /SYSTEM or /SHARE, the group and world are both given RWLP access. Note that the /GROUP, /SYSTEM, and /SHARE qualifiers do not alter the default protection.

If you mount a volume currently in Files--11 format with the /FOREIGN qualifier, you must have the user privilege VOLPRO, or your UIC must match the UIC on the volume.

The /FOREIGN qualifier is incompatible with the following qualifiers: /ACCESSED, /AUTOMATIC, /BIND, /CACHE, /[NO]CONFIRM, [NO]COPY, /EXTENSION, /HDR3, /INITIALIZE, /LABEL, /PROCESSOR, /QUOTA, /REBUILD, /SHADOW, /OVERRIDE=EXPIRATION, and /WINDOWS.

Examples

$ MOUNT/FOREIGN MTA1: ABCD TAPE
      

This command mounts a foreign magnetic tape on drive MTA1.

$ MOUNT/FOREIGN DMA2: SAVEDISK
      

This command mounts an RK07 device as a foreign volume on DMA2 and assigns the logical name SAVEDISK. As a volume that is not file structured, SAVEDISK can be used for sequential-disk BACKUP save operations.

Makes the volume available to other users with the same group number in their UICs as the user entering the MOUNT command.

Format

/GROUP

Description

The logical name for the volume is placed in the group logical name table. You must have the user privilege GRPNAM to use the /GROUP qualifier.

Note that if the volume is owned by a group other than yours, access may be denied because of the volume protection.

The /GROUP qualifier is not valid for ISO 9660 volume sets.

The /GROUP qualifier is incompatible with the /OVERRIDE=IDENTIFICATION, /SHARE, and /SYSTEM qualifiers.

Examples

$ MOUNT/GROUP DB1:, DB2:, DB3: PAYVOL1,PAYVOL2,PAYVOL3  PAY
      

This command mounts and makes available on a group basis the volume set consisting of volumes labeled PAYVOL1, PAYVOL2, and PAYVOL3. The logical name PAY is assigned to the set; anyone wanting to access files on these volumes can refer to the set as PAY.

$ MOUNT/GROUP/BIND=MASTER_PAY DB4: PAYVOL4
      

This command adds the volume labeled PAYVOL4 to the existing volume set MASTER_PAY. The root volume for the volume set must be on line when you enter this command.

Controls whether ANSI standard header label 3 is written on a magnetic tape volume.

Format

/HDR3

/NOHDR3

Description

By default, header label 3 is written. You can specify the /NOHDR3 qualifier to write magnetic tapes that are to be used on other systems that do not process HDR3 labels correctly.

Example

$ INITIALIZE  MTA0: ABCD
$ MOUNT/NOHDR3 MTA0: ABCD
      

The INITIALIZE and MOUNT commands prepare an ANSI-formatted magnetic tape for processing. The /NOHDR3 qualifier specifies that no HDR3 labels are to be written, thus creating a magnetic tape that can be transported to systems that do not process implementation-dependent labels correctly.

Automatically reconstructs a former shadow set to the way it was before the shadow set was dissolved. Applicable only if you have the volume shadowing option. Refer to Volume Shadowing for OpenVMS.

Format

/INCLUDE virtual-unit-name[:] /SHADOW=(physical-device-name[:][,...])

/NOINCLUDE virtual-unit-name[:] /SHADOW=(physical-device-name[:][,...])

Description

Automatically mounts and restores a shadow set to the way it was before a system failure. Supply the exact virtual-unit name that was used when the shadow set was originally mounted. Use the virtual-unit naming format DSAnnnn:.

You must also include the /SHADOW qualifier and specify at least one of the disk devices from the original shadow set. Use the standard device-naming format $allocation-class$ddcu[:]. Omit the parentheses if you name only one device.

The /INCLUDE qualifier is position independent; it can appear anywhere on the command line.

The default qualifier is /NOINCLUDE.

Example

$ MOUNT/INCLUDE DSA0: /SHADOW=$1$DUA10: SHADOWVOL
%MOUNT-I-MOUNTED, SHADOWVOL mounted on DSA0:
%MOUNT-I-SHDWMEMSUCC, _$1$DUA10: (MEMBER1) is now a valid member of 
the shadow set
%MOUNT-I-SHDWMEMCOPY, _$1$DUA11: (MEMBER2) added to the shadow set 
with a copy operation
      

This example shows how to create a shadow set wherein the software determines automatically the shadow set members that should be mounted. The /SHADOW qualifier ensures the correct copy operation for the two shadow set members. In this case, $1$DUA10 is the more current volume and becomes the source of the copy operation to $1$DUA11.

If the shadow set was properly dismounted and no write I/O requests remain outstanding, the shadow set devices are consistent and are added back without the need for a copy or merge operation. Otherwise, Volume Shadowing for OpenVMS automatically performs a copy or merge operation.

Specifies that any volume added to the magnetic tape volume set is initialized before you can write to the volume.

Format

/INITIALIZE=CONTINUATION

Example

$ MOUNT/INITIALIZE=CONTINUATION MTA0: ABCD
      

The /INITIALIZE=CONTINUATION qualifier instructs the MOUNT command to assign its own continuation label. In this case, the operator can enter the command REPLY/BLANK=n, and the system assigns a label derived from the original. It uses the label specified in the MOUNT command and adds the appropriate number (ABCD02, ABCD03, and so forth).

Indicates that the volume is in the standard format used by the OpenVMS operating system; that is, a magnetic tape volume is in the standard ANSI format, or a disk volume is in Files--11 format.

Format

/LABEL

/NOLABEL

Description

The default is /LABEL.

Note that /NOLABEL is equivalent to /FOREIGN; they both set the FOREIGN flag.

Example

$ MOUNT/LABEL MFA1: TAPE
      

This command mounts an ANSI-labeled magnetic tape on MFA1 and assigns the logical name TAPE.

Mounts a volume assuming the media to be ISO 9660 (or High Sierra) formatted.

Format

/MEDIA_FORMAT=CDROM

Description

The /MEDIA_FORMAT=CDROM qualifier instructs the mount subsystem to attempt to mount a volume assuming the media to be ISO 9660 (or High Sierra) formatted.

Note This qualifier specifies a CD-ROM mount (ISO 9660 or High Sierra). Specify this qualifier when a volume is known to be in either ISO 9660 or High Sierra CD-ROM format. The Mount utility attempts to read a CD-ROM in Files--11 ODS--2 format by default. This qualifier prevents the Mount utility from attempting a Files--11 ODS--2 mount sequence. Because it is possible to record parts of a CD-ROM in Files--11 ODS--2 and other parts in ISO 9660 format, this qualifier can be used to specify a CD-ROM mount (ISO 9660 or High Sierra).

Enables and controls data compaction and data record blocking on tape drives that support data compaction.

Format

/MEDIA_FORMAT=[NO]COMPACTION

Description

The /MEDIA_FORMAT qualifier allows you to mount a tape and enable data compaction and record blocking on a tape drive that supports data compaction. Data compaction and record blocking increase the amount of data that can be stored on a single tape.

Records can either be compacted and blocked, or they can be recorded in the same way that they would be recorded on a noncompacting tape drive. Note that for compacting tape drives, once data compaction or noncompaction has been selected for a given tape, that status applies to the entire tape.

The /MEDIA_FORMAT=[NO]COMPACTION qualifier is incompatible with the /DENSITY qualifier.

For Files--11 tapes, when you enable data compaction, caching is automatically enabled.

Note The /MEDIA_FORMAT=[NO]COMPACTION qualifier is meaningful only for foreign mounts. The /MEDIA_FORMAT=[NO]COMPACTION qualifier has no effect on a Files--11 tape. The compaction state of a Files--11 tape is determined by the state established when the tape is initialized.

Examples

$ MOUNT/FOREIGN/MEDIA_FORMAT=COMPACTION MUA0: BOOKS
      

This command performs a foreign mount of a tape with data compaction and record blocking enabled and assigns the logical name BOOKS to the tape.

$ INIT/MEDIA_FORMAT=NOCOMPACTION MUA0: BOOKS
$ MOUNT/MEDIA_FORMAT=COMPACTION MUA0: BOOKS
      

This MOUNT command attempts a Files--11 mount of a tape labeled BOOKS with data compaction and record blocking enabled. Because the tape was initialized with compaction disabled, the MOUNT qualifier /MEDIA_FORMAT=COMPACTION has no effect.

Causes mount request messages to be sent to your current SYS$OUTPUT device.

Format

/MESSAGE

/NOMESSAGE

Description

If you specify /NOMESSAGE during an operator-assisted mount, messages are not output to SYS$OUTPUT; the operator sees them, however, provided an operator terminal is enabled.

The default is /MESSAGE.

Example

$ MOUNT/NOMESSAGE DLA0: SLIP DISC
      

In this example, an RL02 device labeled SLIP is mounted on drive DLA0 and is assigned the logical name DISC. The /NOMESSAGE qualifier disables the broadcast of mount request messages to the user terminal.

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