Re: [Xen-API] How to built XCP from source-1.iso ?

[George Shuklin <george.shuklin@xxxxxxxxx>]

Last time i've dig in it, there was some set of minor files (like 
anaconda replacement to rhel4 installer in eliloader), which was lacking 
of source code too.
The main problems with openness now (except open government we do not 
discuss right now):
* Lack of 'rebuild-world' instructions or script
* No any information on internals:
  ** Expectations of components (who must provide what?)
  ** No any information about xapi database modification, scheme 
bumping and so on.
** No clearly visible roadmap (not customer features, but internals, 
like 'splitting xapi to xapi and networkd') to understand what can be 
messed with and what not.
* Very picky upgrade - XCP is 'platform', not solution and modification 
to internals is obvious for real product environment, installer expect 
it to be completely untouched.
Second level problem:
* dom0fs.tar.bz2 instead of set of packages. I still sometime wonder 
'can I replace package X to Y?' - and I simply can't get right answer 
because of 'blob installation'.

On 21.10.2012 17:50, Pasi KÃrkkÃinen wrote:
> On Sun, Oct 21, 2012 at 01:29:29AM +0400, George Shuklin wrote:
> > Hi.
> >
> > Repack is not the 'rebuild'. Repack is simple unpack and pack back,
> > may be with changes. We do this too (and we actually replace
> > installer with our own to reduce amount input questions).
> >
> > "Dark magic" I'm talking about is how to get dom0fs.tar.bz2 from
> > clear CentOS installation and bunch of source files.
> >
> > Some of files (afaik) even had no source code. F.e. you can not get
> > xs-tools.iso (shipped inside XCP to plug to guest domains) from
> > source code, because windows part (paravirtualized drivers) are
> > closed source.
> Citrix Windows PV drivers are afaik the only closedsource component in XCP ISO.
>
> I think it's very important to be able to rebuild the XCP ISO from 
> sources/scratch.
> We need to get this documented in the wiki!
>
> I'm sure there are many people in the community who could help with this effort,
> trying out things to figure it out the correct process, and document the 
> process.
>
> -- Pasi
>
>
> > xcp-xapi on ubuntu/debian is much more opensource, you can rebuild
> > them completely from scratches, but they are not very stable (xapi
> > part is fine, but all interaction between xapi and other services is
> > 'done somehow' and under some condition breaks).
> >
> >
> > On 21.10.2012 00:12, Outback Dingo wrote:
> > > On Sat, Oct 20, 2012 at 12:02 PM, George Shuklin
> > > <george.shuklin@xxxxxxxxx>   wrote:
> > > > AFAIK there is no such procedure in public. If you want to change some stuff
> > > > in components you can rebuild and reinstall *.rpm, but 'dom0fs.tar.gz' from
> > > > installer is some dark xensource magic.
> > > There is now .......
> > >
> > > http://wiki.xen.org/wiki/Repacking_the_XCP_ISO
> > >
> > > > We using custom XCP iso (with software raid on two disks, specific changes
> > > > to partition layout (~60Gb for /var/log) and so on) - it done by manual
> > > > installation hacking. (Kinda worry about future upgrades...)
> > > >
> > > >
> > > > On 20.10.2012 13:02, Cody Chan wrote:
> > > > > Hello all,
> > > > >
> > > > > I have to modify some source code of XCP, of course source-1.iso, but
> > > > > after that how can I rebuilt XCP installation iso from modified source-1.iso
> > > > > ? Is there how-to document?
> > > > >
> > > > > Thx
> > > > > Cody Chan
> > > > >
> > > > >
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