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DateThu, 20 Apr 2006 03:10:13 -0700
FromAndrew Morton <>
SubjectRe: [PROBLEM] Device-mapper snapshot metadata userspace breakage
Pekka J Enberg <penberg@cs.Helsinki.FI> wrote:
>
> Hi Andrew,
> 
> Pekka J Enberg <penberg@cs.Helsinki.FI> wrote:
> > > The commit aa14edeb994f8f7e223d02ad14780bf2fa719f6d "[PATCH] device-mapper 
> > >  snapshot: load metadata on creation" breaks userspace and is blocking us 
> > >  from moving to the 2.6.16 series kernel. Debian doesn't have the 
> > >  new required LVM version in stable yet. Is the change intentional?
> 
> On Thu, 20 Apr 2006, Andrew Morton wrote:
> > The changelog said
> > 
> >   If you're using lvm2, for this patch to work properly you should update
> >   to lvm2 version 2.02.01 or later and device-mapper version 1.02.02 or
> >   later.
> > 
> > Which was pretty bad of us.  I hope LVM 2.02.01 userspace is
> > back-compatible with older kernels?
> 
> Yeah, I know, but that still leaves us in an unfortunate situation as the 
> 2.6.16 series has security fixes that are not AFAIK in 2.6.15. Anyway, if 
> the change is intentional and approved, I guess we'll just have to live 
> with it. Thanks!
> 

Well I wouldn't say it was "approved".  It was disapproved of and
grudgingly accepted :(

More info here: http://lkml.org/lkml/2006/1/23/130

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