Technical data

Managing Storage Media
9.5 Mounting Volumes
9.5.3 Assisting Users in Mounting Volumes
Large sites often have operators assigned to assist users with mounting volumes.
Section 2.4.6 explains how users can send requests to operators. Section 2.4.7
briefly explains how operators reply to those requests.
When a user requests you to mount a specific disk or tape on a device, the
following type of message appears on the operator terminal:
%%%%%%%%%%% OPCOM, <dd-mmm-yyyy hh:mm:ss:cc> %%%%%%%%%%%
request <request-id>, from user <user-name>
The following steps indicate the sequence of events:
1. A user requests that you mount the volume TEST_FILES on the device
DUA2: by entering the following command:
$ MOUNT DUA2: TEST_FILES/COMMENT="Shelf slot 6B"
2. OPCOM notifies you of the request by displaying a message similar to the
following one at the operator terminal:
%%%%%%%%%%% OPCOM, 28-MAY-2000 15:47:50.26 %%%%%%%%%%%
request 5, from user MALCOLM
Please mount volume TEST_FILES in device _DUA2:
Shelf slot 6B
3. Once you receive the request, OPCOM delivers a confirmation to the user, in
a format similar to the following:
%MOUNT-I-OPRQST, Please mount volume TEST_FILES in device _DUA2:
Shelf slot 6B
4. After you locate the volume and place it on the device, OPCOM notifies the
user that the volume is on the device and that the task is complete:
%MOUNT-I-MOUNTED,TEST_FILES mounted on _DUA2:
%MOUNT-I-RQSTDON, operator request canceled
-- mount completed successfully.
Instead of requesting a specific hardware device, such as DUA2:, for mounting a
volume, users can make a generic MOUNT request. A generic MOUNT request
specifies a type of device and lets you find an available device in that class. For
example, to mount the volume CITIES on any tape drive whose name begins with
MU, the user enters the following command:
$ MOUNT MU: CITIES/COMMENT="Slot 12c"
If the user has already allocated a drive whose name begins with MU, the Mount
utility requests that you mount CITIES on that particular drive. If no device has
been allocated, the Mount utility allocates the first available MU tape drive it
finds and requests you to mount CITIES on that drive.
Sending Messages Back to Users
After you mount a disk or tape, follow these steps:
1. Use the operator communication manager (OPCOM) to communicate with
system users. OPCOM is a system process that receives input from a process
that wants to inform an operator of a particular status or condition; OPCOM
passes the message to the operator, and tracks the message.
To use OPCOM, you must use a terminal that has been designated as an
operator terminal. See Section 2.4.5 for instructions.
9–34 Managing Storage Media