[linux-lvm] Problem extending a LV
Heinz J. Mauelshagen
Mauelshagen at sistina.com
Wed May 30 09:24:23 UTC 2001
On Tue, May 29, 2001 at 01:35:07PM -0500, Austin Gonyou wrote:
> Are there plans to have this functionality?
Yes, as mentioned in my other related mail.
> As in, I have a 2 disk striped
> set, and now I'm running out of space, so I add a third pv, and now I want
> to restripe and extend onto the third disk? I ask because Veritas has this
> ability, and it could be a deal breaker for some choosing which to use.
All right, that's one reason why we want to have it.
A post 1.0 feature though :-(
Regards,
Heinz -- The LVM Guy --
>
> --
> Austin Gonyou
> Systems Architect, CCNA
> Coremetrics, Inc.
> Phone: 512-796-9023
> email: austin at coremetrics.com
>
> On Tue, 29 May 2001, AJ Lewis wrote:
>
> > On Tue, May 29, 2001 at 11:33:54AM +0200, Carsten Balzer wrote:
> > > If I try to extend the LV with:
> > > lvextend -L+78164M /dev/NVolGroup/nVol
> > > then I get:
> > > lvextend -- rounding size 240119808 KB to stripe boundary size
> > 240123904
> > > KB
> > > lvextend -- only 19541 free physical extents in volume group
> > "NVolGroup"
> > >
> > > Next try with: lvextend -l+19541 /dev/NVolGroup/nVol
> > > lvextend -- rounding size 240119808 KB to stripe boundary size
> > 240123904
> > > KB
> > > lvextend -- only 19541 free physical extents in volume group
> > "NVolGroup"
> >
> > You cannot currently extend a striped LV onto a new disk. It would
> > involve
> > completely rearranging the data to account for the new striping
> > configuration. The reason you get the error is because the tools know
> > this
> > and are trying to extend on the two original PVs. If you want to have
> > the
> > ability to extend the LV onto new disks, you must use linear LVs.
> >
> > Regards,
> >
>
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Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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