[Fedora-xen] Re: Using large disk in DomU

[Daniel P. Berrange]

On Tue, Nov 21, 2006 at 08:35:38PM +0000, Robin Bowes wrote:
> Daniel P. Berrange wrote:
> > If you want to build a new kernel RPM for testing this patch something along
> > the lines of the following should work.
> > 
> > 1. Extract the patch file from mercurial
> > 
> >   hg clone  http://xenbits.xensource.com/xen-unstable.hg
> >   cd xen-unstable.hg
> >   hg log --patch -r 0c0ef61de06b > ~/rpm/SOURCES/large-disks.patch
> > 
> > 2. Grab the latest  kernel  src.rpm file & install it locally
> > 
> >      rpm -ivh kernel-XXXXXX.src.rpm
> >      cd ~/rpm/SPECS
> > 
> > 3. Edit the kenrel.spec file, incrementing release tag,
> > 
> >     Release: %{release}.1xen2tbtest
> > 
> >   Add
> > 
> >      Patch30000: large-disks.patch
> >  
> >   And in the %setup section
> > 
> >      %patch30000 -p1
> > 
> > 4. Rebuild the Xen kernel for i686
> > 
> >     rpmbuild --target i686 --define 'buildup 0' --define 'buildsmp 0'
> >         --define 'buildkdump 0' -ba kernel-2.6.spec
> 
> I did this, but the patch failed:
> 
> Patch #30000 (large-disks.patch):
> + patch -p1 -s
> The text leading up to this was:
> --------------------------
> |changeset:   12496:0c0ef61de06b
> |user:        kfraser at localhost.localdomain
> |date:        Tue Nov 21 10:16:58 2006 +0000
> |summary:     [BLK] Handle block devices with more than 2^32 sectors.
> |
> |diff -r 82ba3c086e6c -r 0c0ef61de06b
> linux-2.6-xen-sparse/drivers/xen/blkback/common.h
> |--- a/linux-2.6-xen-sparse/drivers/xen/blkback/common.h        Tue Nov
> 21 09:26:43 2006 +0000
> |+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/common.h        Tue Nov
> 21 10:16:58 2006 +0000
> --------------------------
> File to patch:
> 
> To be honest, it was creating the patch that I would struggle with - I'm
> OK on modifying spec files,etc.
> 
> Any idea what's wrong?

Wrong patch stripping I think - it should actually be '-p2' instead 
of '-p1'.

Regards,
Dan.
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