[linux-lvm] Moving a PV to a new, larger, disk.

Heinz Mauelshagen mauelshagen at redhat.com
Wed Jan 14 08:37:01 UTC 2004

On Tue, Jan 13, 2004 at 03:45:54PM +0100, Spam wrote:
>   Hello,
>   Is it possible to use dd/dd_rescue to simply copy a PV to a new disk
>   that is slightly (16MiB)larger?
>   The old pv is on /dev/hdb1 and the new disk is /dev/hdc and is
>   unpartitioned so far. How would I proceed to make this work?

Following procedure to make it happen:

o partition the new disk with 1 partition of _exactly_
  the same size (in units of sectors) as /dev/hdb1

o dd(_rescue) content over

o remove the old disk

o vgscan

o vgchange -ay

>   This might seem odd to do as I could perhaps use pvmove, but pvmove
>   requires the whole vg to be present in the system, right?
>   //Anders
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***


Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
Mauelshagen at Sistina.com                           +49 2626 141200
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