unmountdev

Purpose

Use the unmountdev command to unmount tape volumes manually. When a tape is unmounted, the tape is no longer in a mode in which Oracle Secure Backup can read or write to it. You can use the mountdev command to mount an unmounted tape.

The unmountdev command is particularly useful when the tape drive is not set to automount, which is the recommended, default configuration setting. In special situations the unmountdev and mountdev commands provide additional control over your tape drive.

Prerequisites

You must have the right to manage devices and change device state to use the unmountdev command.

Syntax

unmountdev::=

unm•ountdev [ --unload/-u | --norewind/-R ] devicename ...

Semantics

--unload/-u

Unloads a volume from the tape drive.

--norewind/-R

Specifies that the tape should not be rewound when Oracle Secure Backup finishes writing to it.

devicename ...

Specifies the device from which you want to unmount a volume. Refer to "devicename" for the rules governing device names.

Example

Example 2-154 unmounts an automounted tape drive called tape1.

ob> lsdev --long tape1
tape1:
    Device type:            tape
    Model:                  [none]
    Serial number:          [none]
    In service:             yes
    Library:                lib1
    DTE:                    1
    Automount:              yes
    Error rate:             8
    Query frequency:        3145679KB (-1073791796 bytes) (from driver)
    Debug mode:             no
    Blocking factor:        (default)
    Max blocking factor:    (default)
    Current tape:           1
    Use list:               all
    Drive usage:            14 seconds
    Cleaning required:      no
    UUID:                   b7c3a1a8-74d0-1027-aac5-000cf1d9be50
    Attachment 1:
        Host:               brhost3
        Raw device:         /dev/tape1
ob> unmountdev --norewind tape1
ob> lsdev --mount tape1
drive      tape1            in service           unmounted