HP-UX HB v13.00 Ch-13 - LVM

HP-UX Handbook – Rev 13.00 Page 35 (of 110)

Chapter 13 LVM

October 29, 2013

Here’s an example configuration:

If you want to be sure that the mirrors of LVs on e.g. c0t1d0 are not placed on c0t2d0

you need a lvmpvg file like the following:

# cat /etc/lvmpvg

VG /dev/vg01

PVG pvg_a

/dev/dsk/c0t1d0

/dev/dsk/c0t2d0

PVG pvg_b

/dev/dsk/c1t4d0

/dev/dsk/c1t5d0

As soon as this file is saved the configuration is active and vgdisplay will look like this:

# vgdisplay -v vg01

...

--- Physical volume groups ---

PVG Name pvg_a

PV Name /dev/dsk/c0t1d0

PV Name /dev/dsk/c0t2d0

PVG Name pvg_b

PV Name /dev/dsk/c1t4d0

PV Name /dev/dsk/c1t5d0

Before mirroring a LV you need to set its allocation policy to PVG-strict, e.g.:

# lvchange -s g /dev/vg01/lvol1

# lvdisplay /dev/vg01/lvol1 | grep Allocation

Allocation PVG-strict

For details look at the lvmpvg man page.

pvg_b

c0t1d0

pvg_a

host

vg01

c0t2d0

c1t4d0

c1t5d0