[linux-lvm] Correct way to add disc to LVM

[linux-lvm] Correct way to add disc to LVM

[Craig Hagerman]

Hi all,

I want to make sure I understand the correct way to add more disc
space under LVM. If you have LVM set up on one single HD, and then
want to extend that to cover a second HD what is the correct way to
proceed?

From reading the HOWTO I think this is how it is done. Am I missing
anything essential here?

---------------------------------------------------------------------
Add physical volumes to a volume group:
---------------------------------------------------------------------
Use 'vgextend' to add an initialized physical volume to an existing
volume group.
# vgextend my_volume_group /dev/hdc1
                                    ^^^^^^^^^ new physical volume

---------------------------------------------------------------------
Extend logical volume:
---------------------------------------------------------------------

# lvextend -L12G /dev/myvg/homevol

         will extend /dev/myvg/homevol to 12 Gigabytes.

-----------------------------------------------------------------------------------------------------------
Increase size of file system to match the logical volume (assuming ext2 / 3):
-----------------------------------------------------------------------------------------------------------
   # umount /dev/myvg/homevol/dev/myvg/homevol
   # resize2fs /dev/myvg/homevol
   # mount /dev/myvg/homevol /home


Is this correct? Is this all you have to do?

Craig

Re: [linux-lvm] Correct way to add disc to LVM

[Patrick Caulfield]

Craig Hagerman wrote:

> Is this correct? Is this all you have to do?
> 

yes

-- 

patrick

Re: [linux-lvm] Correct way to add disc to LVM

[Heinz Mauelshagen]

On Fri, Oct 21, 2005 at 09:14:44PM +0900, Craig Hagerman wrote:
> Hi all,
> 
> I want to make sure I understand the correct way to add more disc
> space under LVM. If you have LVM set up on one single HD, and then
> want to extend that to cover a second HD what is the correct way to
> proceed?
> 
> >From reading the HOWTO I think this is how it is done. Am I missing
> anything essential here?

Run pvcreate on your new drive before vgextend.

> 
> ---------------------------------------------------------------------
> Add physical volumes to a volume group:
> ---------------------------------------------------------------------
> Use 'vgextend' to add an initialized physical volume to an existing
> volume group.
> # vgextend my_volume_group /dev/hdc1
>                                     ^^^^^^^^^ new physical volume
> 
> ---------------------------------------------------------------------
> Extend logical volume:
> ---------------------------------------------------------------------
> 
> # lvextend -L12G /dev/myvg/homevol
> 
>          will extend /dev/myvg/homevol to 12 Gigabytes.
> 
> -----------------------------------------------------------------------------------------------------------
> Increase size of file system to match the logical volume (assuming ext2 / 3):
> -----------------------------------------------------------------------------------------------------------
>    # umount /dev/myvg/homevol/dev/myvg/homevol
>    # resize2fs /dev/myvg/homevol
>    # mount /dev/myvg/homevol /home
> 
> 
> Is this correct? Is this all you have to do?
> 
> Craig
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

-- 

Regards,
Heinz    -- The LVM Guy --

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

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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Cluster and Storage Development                   56242 Marienrachdorf
                                                  Germany
Mauelshagen@RedHat.com                            +49 2626 141200
                                                       FAX 924446
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