[Yum] Re: [Yum-devel] Dynamic yum respositories?

[Ram Pai]

On Tue, 2007-04-24 at 08:51 -0500, Michael E Brown wrote:
> On Mon, Apr 16, 2007 at 02:34:58AM -0700, Ram Pai wrote:
> > Hi,
> > 
> >     I have this unique problem. I am planning on providing through yum
> > repositories, driver rpms for different versions of the distro kernel.
> > As and when new kernel is available and installed by the user, the
> > corresponding rpm for the driver is automatically made available in the
> > repositories.  In all probability the driver present in the rpm for a
> > older kernel will suffice since the kernel's ABI would'nt have changed.
> > In such cases the driver rpm for the new kernel can be built dynamically
> > in the repository, reusing the driver in a existing rpm.
> > 	
> >      However I find that even if these rpms can dynamically be made
> > available on demand by the yum client, the yum protocol does not lend
> > itself to handle these dynamically generated rpms.  
> > 
> > Does anybody know of ways this can be handled with existing
> > infrastructure?  
> > 
> >     I am thinking may be createrepo  is augmented to generate xml files,
> > which somehow convey to the client that some rpms can be made available
> > on-demand. Will that work?  Looking for ideas/suggestions.
> 
> Ram,
>     After mulling on this a little bit, how about this idea:
> 
>     You could create a yum plugin that sets yumvars: $kernelver and
> $kernelarch. Then you could set up the repo with
> 
> mirrorlist=http://your.site/mirror.cgi&kernelver=$kernelver&kernelarch=$kernelarch
> 
>     In your CGI script, you could detect if modules for that kenrel are
> built. If they are, return the repo baseurl. If they are not, build the
> packages and update the repo metadata before returning the baseurl.

Interesting.  Sounds like this skips the xml file download, and directly
installs the rpm of interest. Am I thinking right?


RP

> --
> Michael
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