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The Physical View

The Physical View does for physical disks what the Logical View does

for logical volumes. It allows you to view all disks and partitions present

in the system, and to manipulate them in a number of ways.

Like the Logical View, the Physical View is divided into upper and lower

display areas.

The upper area, referred to as the disk list, lists all the physical disks

that exist on the system.

The disk list displays the following attributes for each disk present:

Physical Disk

This column indicates the disk's number and name. The number

represents the disk's physical identity within the computer.

The disk name, like volume and partition names, is a short text label

of up to 20 characters. LVM gives each disk a default name, but you

are free to change this name to a more descriptive one of your

choosing.

These names have no real meaning to the system, and are purely for

your convenience.

Appendix C: Logical Volume Manager 43

Size (MB)

This indicates the physical disk's total size, in megabytes.

Free Space

Total: This column indicates the total amount of free space (that is,

space which is not part of any partition) available on the disk. The

size is given in megabytes.

Largest: This column indicates the size of the largest contiguous

block of free space on the disk. If there is only one block of free

space, then this value will be the same as that shown under the

'Total' column.

As in the Logical View, the disk list has a 'selection bar' which allows

you to select a disk from within the list, using the up and down arrow

keys. Pressing the 'Enter' key will cause the disk options menu to

appear.

The lower display area, referred to as the disk partition list, lists all

partitions that exist on the currently-selected disk. It also shows blocks

of free space.

The disk partition list displays the following attributes for each partition

on the current disk:

Disk Partition

This column displays the name of each partition. As usual, the name

is a short text label of up to 20 characters. If you do not assign the

partition a name, LVM will give it a generic default name, usually

consisting of the letter 'A' and a number, enclosed in square

brackets.

This column also indicates blocks of free space. Free space may be

recognized by the fact that only the 'Disk Partition' and 'Size' columns

have values. Free space blocks always have the name 'free space'

followed by a number, enclosed in square brackets. The number

indicates the relative position of the free space block on the disk, if

there is more than one such block.

Size (MB)

This column indicates the size of the partition or free space block, in

megabytes.

Type

This column indicates whether the partition is a primary or logical

partition.

Status

This column shows the current status of the partition. The possible

values are 'available' and 'in use'.

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