[linux-lvm] Problems and questions with LVM on a large raid system.
Heinz J . Mauelshagen
mauelshagen at sistina.com
Tue Mar 18 03:14:02 UTC 2003
On Sat, Mar 15, 2003 at 11:36:07PM +0100, jon+lvm at silicide.dk wrote:
> On Sat, Mar 15, 2003 at 01:59:59PM -0600, Steven Lembark wrote:
> >
> >
> > -- Jon Bendtsen <jon+lvm at silicide.dk>
> >
> > >>> that depends. You can stripe the lvm, but then you cant resize it.
> > >>> if you made a LV, then it would proberly just allokate all on one
> > >>> "disk", aka sda, and then on sdb.
> > >>
> > >> I'm using 100% of the VG for the same LV.
> > >>
> > >> I'm fine with not being able to resize it. Do I need the MD stuff to
> > >> stripe it?
> > >
> > >No. You can stripe using the LV system. But i would think that
> > >if you can shutdown the LV, then you might as well stop the VG,
> > >and do it on the raw device. (except this isnt as future proof
> > >as a LVM system is).
> >
> > Nor as flexable: with LVM you can easily grow the LV's, with
> > out LVM you are stuck with fixed partitions.
>
> that would be included in being future proof ;-D
> Besides, he wants to stripe it, and you cant extend a stripped
> LV (as far as i know).
Yes, you can.
Stripes are linited by the physical volume size in LVM1 though and the only way
to grow a striped LV there is to pvmove the stripe to a larger PV and extend
the LV afterwards.
LVM2 doesn't have such constraint any longer :)
>
>
>
> JonB
>
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--
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 Sistina Software Inc.
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56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
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