I.8 creating a logical volume, Creating a logical volume – Dot Hill Systems II 200 FC User Manual

Page 201

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Appendix I Configuring an HP Server Running the HP-UX Operating System I-7

In the output of

vgdisplay

, the Total PE field displays the number of physical

extents in the volume group.

The size of each physical extent is displayed in the PE Size field (the default is 4
Mbyte), so the total capacity of this volume group is 2167 x 4 Mbyte = 8668 Mbyte.

The Alloc PE field shows the number of physical extents allocated to logical volumes.
At this point, the Alloc PE field is zero because we have not assigned any of this
volume group’s capacity to logical volumes.

I.8

Creating a Logical Volume

To create a logical volume within the volume group, use the

lvcreate

command with

the -L option to specify the size of the logical volume in megabytes. The logical
volume size should be a multiple of the physical extent size. In this example, a logical
volume of 4092 Mbyte is created:

VG

Write

Access

read/write

VG

Status

available

Max

LV

255

Cur

LV

0

Open

LV

0

Max

PV

16

Cur

PV

1

Act

PV

1

Max

PE

per

PV

2167

VGDA

2

PE

Size

(Mbytes)

4

Total

PE

2167

Alloc

PE

0

Free

PE

2167

Total

PVG

0

#

lvcreate

-L

4092

/dev/vg02

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