Re: [linux-lvm] LVM2 scalability within volume group

[Dave Olien <dmo osdl org>]

Thanks!  The pvcreate man page I have installed now (from LVM2.00.08)
doesn't mention this option.  I'll move to the cvs version and give it
a try.

Dave

On Wed, Mar 17, 2004 at 12:00:05PM -0600, Alasdair G Kergon wrote:
> On Wed, Mar 17, 2004 at 09:36:38AM -0800, Dave Olien wrote:
> > Having redundant copies of meta data is a good thing.  But how about
> > allowing the adminstrator to set a limit on the degree of redundancy when
> > a VG is created.  You could limit a VG to having for example 10 redundant
> > copies.  Then adding more PVs beyond the 10th would encounter less overhead.
> > Am I missing something important?
> 
> There'll be a VG-level option for this eventually; until then, use the
> pvcreate options to say how many copies of metadata you want on each PV.
> e.g. pvcreate --metadatacopies 0
> [Careful use of the --restorefile option lets you reduce it on a PV already in the VG.]
> 
> For complex VGs you should increase the space set aside for metadata too:
>   --metadatasize
> 
> See the pvcreate man page.
>  
> Alasdair
> -- 
> agk redhat com
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