10.0;dmtvol (dismount_volume), revision 1.0, 88/01/21
dmtvol (dismount_volume) -- Dismount a logical volume.
usage: dmtvol {w | s | f}[controller:][unit] [log_vol_number]
[pathname] [-fu | -nw]
DESCRIPTION
dmtvol dismounts a logical volume that was previously mounted with the
mtvol (mount_volume) command. After the volume has been dismounted, it is
unavailable for further access.
Only privileged users are permitted to mount volumes. The set of
privileged users is determined by the system administrator.
ARGUMENTS
disk_type (required)
Specify the type of disk on which the volume resides: w
for a Winchester disk, s for a storage module, or f for a
floppy disk.
controller (optional)
Specify controller number (0 or 1). To specify both
controller and unit, type the controller number, a colon
(:), then the unit number, e.g., ``w1:0."
For SCSI configurations, controller number 6 is reserved
for the first internal Winchester disk. Additional SCSI
devices should be numbered in decreasing consecutive order
from 5 to 0. For non-SCSI configurations, the controller
number may be 0 or 1. See EXAMPLES below.
Default if omitted: 0
unit (optional)
Specify a unit number (0 or 1 only) for the device, if
necessary. For example, s1 denotes storage module unit 1.
To specify both controller and unit, type the controller
number, a colon (:), then the unit number, e.g., ``w1:0."
See EXAMPLES below.
Default if omitted: 0
log_vol_number (optional)
Specify the number of the logical volume to be dismounted.
Default if omitted: 1
pathname (optional)
Specify the entry directory of the logical volume. If
you include this argument, dmtvol dismounts the volume and
uncatalogs its entry directory. If you omit it, dmtvol
dismounts the logical volume, but retains its name in the
naming tree.
OPTIONS
-fu Forcibly unlock any locked objects, then dismount the
volume. If you omit this option, the dismount fails if
the volume contains any locked objects.
-nw Prevents dmtvol from trying to write to the disk during
the dismount. Normally, writing to the disk saves current
information. However, if the disk was removed prior to
the dismount, you should use this option.
EXAMPLES
Dismount storage module unit zero, logical volume 2, and leave its name
in the naming tree.
$ dmtvol s 2
Dismount floppy unit zero, logical volume 1, and delete its name from the
naming tree.
$ dmtvol f /floppy
At SR10, this command interprets controller number and unit number in the
following way. (The example below assumes a Winchester disk (-w)).
You type Interpreted as
(Controller:Unit)
w w0:0
w0 w0:0
w1 w0:1
w1:0 w1:0
w1:1 w1:1
SEE ALSO
More information is available. Type
help mtvol For details about mounting logical volumes