[linux-lvm] lvm can not be extended

[linux-lvm] lvm can not be extended

[Yu Huang]

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hi, all,

I am new to lvm. I have installed my ubuntu 8.04 on LVM in my machine.

I created a volume for the root partition. I used lvextend to extend the
size of the root volume.
In lvdisplay, it shows the LV size is 25.00G. But when I use df, it shows
the size of the root volume is
5.00G, which is the original size I allocated to it.

Am I missing something here?

Thanks a lot for your help.

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Re: [linux-lvm] lvm can not be extended

[Stuart D. Gathman]

On Mon, 28 Sep 2009, Yu Huang wrote:

> I am new to lvm. I have installed my ubuntu 8.04 on LVM in my machine.
> 
> I created a volume for the root partition. I used lvextend to extend the
> size of the root volume.
> In lvdisplay, it shows the LV size is 25.00G. But when I use df, it shows
> the size of the root volume is
> 5.00G, which is the original size I allocated to it.
> 
> Am I missing something here?

Definitely.  Df shows the filesystem size, not the LV size.  You probably
want to extend the filesystem to match the LV.  In EL5, 'resize2fs' will
resize a filesystem while it is mounted (Leave out the size, and it will resize
to match the LV).  If the version on your Ubuntu doesn't know how to 
resize online, then you'll have to boot from CD or USB and run resize2fs.

-- 
	      Stuart D. Gathman <stuart@bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

Re: [linux-lvm] lvm can not be extended

[Yu Huang]

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That helps a lot.

Thank you very much!

On Mon, Sep 28, 2009 at 10:10 AM, Stuart D. Gathman <stuart@bmsi.com> wrote:

> On Mon, 28 Sep 2009, Yu Huang wrote:
>
> > I am new to lvm. I have installed my ubuntu 8.04 on LVM in my machine.
> >
> > I created a volume for the root partition. I used lvextend to extend the
> > size of the root volume.
> > In lvdisplay, it shows the LV size is 25.00G. But when I use df, it shows
> > the size of the root volume is
> > 5.00G, which is the original size I allocated to it.
> >
> > Am I missing something here?
>
> Definitely.  Df shows the filesystem size, not the LV size.  You probably
> want to extend the filesystem to match the LV.  In EL5, 'resize2fs' will
> resize a filesystem while it is mounted (Leave out the size, and it will
> resize
> to match the LV).  If the version on your Ubuntu doesn't know how to
> resize online, then you'll have to boot from CD or USB and run resize2fs.
>
> --
>              Stuart D. Gathman <stuart@bmsi.com>
>    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
> "Confutatis maledictis, flammis acribus addictis" - background song for
> a Microsoft sponsored "Where do you want to go from here?" commercial.
>
> _______________________________________________
> 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/
>

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