[linux-lvm] How to grow a PV?

[linux-lvm] How to grow a PV?

[Thomas Kleffel]

Hi!

I am running LVM1 ontop of  software-RAID (md). I just added a disk to 
my raid, so my /dev/md0 is about 120G bigger now.

Now my question is: How can I tell LVM to include these additional space 
into the PV that's already there (on /dev/md0)?

I  know it has to be possible because I did it several times (my raid 
has 9 disks now - it hat 4 disks, some time ago) - I just can't rememer :(((
Could someone please give me a hint?

Thanks in advance,

Thomas Kleffel

Re: [linux-lvm] How to grow a PV?

[Heinz J . Mauelshagen]

On Thu, Jun 12, 2003 at 10:38:49AM +0200, Thomas Kleffel wrote:
> Hi!
> 
> I am running LVM1 ontop of  software-RAID (md). I just added a disk to 
> my raid, so my /dev/md0 is about 120G bigger now.

Sounds like you added a new disk to the end of a linear MD ?

You could have pvcreate'd it directly to add it to a Volume Group
(not adding it to the MD at all).

> 
> Now my question is: How can I tell LVM to include these additional space 
> into the PV that's already there (on /dev/md0)?

LVM2 supports PV resizing.

> 
> I  know it has to be possible because I did it several times (my raid 
> has 9 disks now - it hat 4 disks, some time ago) - I just can't rememer :(((
> Could someone please give me a hint?
> 
> Thanks in advance,
> 
> Thomas Kleffel
> 
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.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 ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Re: [linux-lvm] How to grow a PV?

[Thomas Kleffel]

Hi again,

after a bit of research I found out, that I resized my PV some time ago 
using the pvresize command, that was available in lvm_1.1-rc2.
At the moment I am using 1.0.7 (gentoo). My problem is now that 
lvm_1.1-rc2 seems to have disappeared. I read that it was buggy, but 
worked for me at least 4 times.
Could someone please tell me, where I could get lvm_1.1?  This would 
save me a lot of work.

Thanks in advance,

Thomas Kleffel


I wrote:

> Hi!
>
> I am running LVM1 ontop of  software-RAID (md). I just added a disk to 
> my raid, so my /dev/md0 is about 120G bigger now.
>
> Now my question is: How can I tell LVM to include these additional 
> space into the PV that's already there (on /dev/md0)?
>
> I  know it has to be possible because I did it several times (my raid 
> has 9 disks now - it hat 4 disks, some time ago) - I just can't 
> rememer :(((
> Could someone please give me a hint?

Re: [linux-lvm] How to grow a PV?

[Thomas Kleffel]

Hi!

Heinz J . Mauelshagen wrote:

>Sounds like you added a new disk to the end of a linear MD ?
>
>You could have pvcreate'd it directly to add it to a Volume Group
>(not adding it to the MD at all).
>  
>
Not exactly - I added a new disk to a raid-5 MD. I wanted it to be in 
the raid-array for beeing protected from a single-disk-failure.

>LVM2 supports PV resizing.
>
Ok, thanks - I'm going to try this now...

Bye,

Thomas

Re: [linux-lvm] How to grow a PV?

[Thomas Kleffel]

Hi again...

...I'm sorry for having to ask again...

Heinz J . Mauelshagen wrote:

> LVM2 supports PV resizing. 

I just installed 1.95.15 and pvresize tells me "Command not implemented 
yet."
"pvresize --version" gives me the following:

 > LVM version:       1.95.15 (2003-01-10)
 > Library version:      0.96.08-ioctrl (2003-03-27)
 > Driver version:      1.0.10

Did I fetch an old version? Or do I need to get some bleeding-edge-stuff 
from the CVS?
Or am I simply too stupid? :)

Thanks for your help,

Thomas Kleffel

Re: [linux-lvm] How to grow a PV?

[Heinz J . Mauelshagen]

On Thu, Jun 12, 2003 at 02:45:49PM +0200, Thomas Kleffel wrote:
> Hi again...
> 
> ...I'm sorry for having to ask again...

No problem.

> 
> Heinz J . Mauelshagen wrote:
> 
> > LVM2 supports PV resizing. 
> 
> I just installed 1.95.15 and pvresize tells me "Command not implemented 
> yet."
> "pvresize --version" gives me the following:
> 
>  > LVM version:       1.95.15 (2003-01-10)
>  > Library version:      0.96.08-ioctrl (2003-03-27)
>  > Driver version:      1.0.10
> 
> Did I fetch an old version? Or do I need to get some bleeding-edge-stuff 
> from the CVS?
> Or am I simply too stupid? :)

No, you need to use pvcreate+vgcfgrestore with LVM2.
Make a copy of your LVM metadata before you try it ;)
(dd if=/dev/md0 of=md0.vgda bs)1k count=4k)

> 
> Thanks for your help,
> 
> Thomas Kleffel
> 
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.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 ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Re: [linux-lvm] How to grow a PV?

[Thomas Kleffel]

Hi!

> > I just installed 1.95.15 and pvresize tells me "Command not implemented
> > yet."
> > "pvresize --version" gives me the following:
> >
> >  > LVM version:       1.95.15 (2003-01-10)
> >  > Library version:      0.96.08-ioctrl (2003-03-27)
> >  > Driver version:      1.0.10
> >
> > Did I fetch an old version? Or do I need to get some bleeding-edge-stuff
> > from the CVS?
> > Or am I simply too stupid? :)
>
> No, you need to use pvcreate+vgcfgrestore with LVM2.
> Make a copy of your LVM metadata before you try it ;)
> (dd if=/dev/md0 of=md0.vgda bs)1k count=4k)

It worked perfectly :)
Thank you!

Regard,

Thomas