Technical data

Managing Storage Media
9.5 Mounting Volumes
Table 9–14 (Cont.) MOUNT Command Qualifiers for Mounting Tapes
Qualifier Description
/PROCESSOR=keyword For magnetic tapes and Files–11 Structure Level 1 disks, requests that the
MOUNT command associate an ancillary control process (ACP) to process the
volume.
You must have the operator user privilege OPER to use the /PROCESSOR
qualifier.
Keywords are in the following list:
• UNIQUE
For magnetic tape and Files-11 ODS-1, ISO 9660, or High Sierra formatted
media being mounted, creates a new process to execute a copy of the default
ACP image for the specified device type or controller. For Files-11 Structure
Level 2 or 5 disks, allocates a separate block cache.
• SAME:device
For magnetic tape and Files-11 ODS-1, ISO 9660, or High Sierra formatted
media being mounted, uses the same ACP process currently being used by
the device specified. For Files-11 Structure Level 2 or 5 disks, takes the
block cache allocation from the specified device.
• filespec
Creates a new process to execute the ACP image specified by the file
specification (for example, a modified or a user-written ACP). You cannot
use wildcard characters or node and directory names in the file specification.
To use this keyword, you must have CMKRNL and OPER privileges.
The /PROCESSOR qualifier causes MOUNT to override the default manner in
which ACPs are associated with devices. For example:
$ MOUNT/PROCESSOR=SAME:MTA1: MFA0:
This command directs MOUNT to mount a magnetic tape on MFA0: using the
same ACP process currently associated with the MTA1: device.
/PROTECTION=code Specifies the protection code to be assigned to the volume for the duration of the
mount. See Section 9.4.2 for details.
/RECORDSIZE=n Specifies the number of characters in each record of a magnetic tape volume.
Use this qualifier when you mount a volume that has a file without a second
header label (such as RT–11 volumes), or when you mount volumes with the
/FOREIGN qualifier, to provide RMS with the size of fixed-length records or the
maximum size of variable-length records.
Two other qualifiers that are important for mounting tape volumes are
/INITIALIZE and /AUTOMATIC, which are explained in Section 9.8.2.2 and
Section 9.8.2.3, respectively.
Example
$ MOUNT MU: TEST_FILES
%MOUNT-I-OPRQST, Please mount volume TEST_FILES in device _MUA2:
%MOUNT-I-MOUNTED, TEST_FILES mounted on _MUA2:
In this example, the MOUNT command requests an available RA90 device for
the volume labeled TEST_FILES. After you physically mount the volume in the
device named in the response from MOUNT, the system completes the operation.
Note that the device is automatically allocated by MOUNT.
Upon successful completion of the operation, MOUNT notifies you with a message
sent to SYS$OUTPUT. If the operation fails for any reason, MOUNT notifies you
with an error message.
Managing Storage Media 9–33