Xen devel - Apr 2005 - xen-2.0.5 vs xen-2.0-testing and version identification on xen.gz

I''m building 2.0-testing in an effort to check the problem I''m
having
with 2.0.5.

I want to be able to roll back if it all goes sour, how would the
following combinations work:

xen 2.0.5, kernel 2.0-testing, tools 2.0.5
xen 2.0-testing, kernel 2.0-testing, tools 2.0.5

I don''t want to update anything I don''t have to...

Also, the standard xen build just builds a file called xen.gz. Can I
suggest that we call it something like xen-2.0.5.gz or
xen-2.0-testing.gz so that multiple versions could be installed at once?
Obviously it''s pretty easy to rename the file manually myself if nobody
else thinks it''s a good idea...

James

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> I want to be able to roll back if it all goes sour, how would the
> following combinations work:
Basically any combination ought to work. The 2.0.x series is all binary 
compatible.

The -testing tree is basically bug fixes only, so using it *shouldn''t*
give
you any problems.

Cheers,
Mark
> xen 2.0.5, kernel 2.0-testing, tools 2.0.5
> xen 2.0-testing, kernel 2.0-testing, tools 2.0.5
> 
> I don''t want to update anything I don''t have to...
> 
> Also, the standard xen build just builds a file called xen.gz. Can I
> suggest that we call it something like xen-2.0.5.gz or
> xen-2.0-testing.gz so that multiple versions could be installed at once?
> Obviously it''s pretty easy to rename the file manually myself if
nobody
> else thinks it''s a good idea...
> 
> James
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
> 
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On Thu, Apr 07, 2005 at 09:54:45PM +1000, James Harper
wrote:
> Also, the standard xen build just builds a file called xen.gz. Can I
> suggest that we call it something like xen-2.0.5.gz or
> xen-2.0-testing.gz so that multiple versions could be installed at once?
> Obviously it''s pretty easy to rename the file manually myself if
nobody
> else thinks it''s a good idea...
I highly second this suggestion -- this past weekend (after losing
several hours messing around with the wrong xen+xenolinux) I spent some
time trying to figure out how to safely add a user-specified optional
environment variable (like $REVISION below) which along with
EXTRAVERSION would get appended to *all* of the filenames which are
installed in /boot, so it''s easier to keep different build products
straight.  This is easy to do with standard Linux and the Debian kernel
build tools, but I haven''t figured out the right way to do it with Xen
or Xenolinux yet, short of patching makefiles and/or the install script.
I''ll look at it again when I get a chance -- I''m netless at
the moment.

For example, right now ''uname -r'' on my (non-Xen) laptop
returns:

    2.4.22spirit.7+600x

...and the related files in /boot are:

    config-2.4.22spirit.7+600x
    vmlinuz-2.4.22spirit.7+600x
    System.map-2.4.22spirit.7+600x
    initrd.img-2.4.22spirit.7+600x

This was all built with something like this:

    EXTRAVERSION=spirit.7+600x
    REVISION=`hostname`.`date ''+%s''`
    cd /usr/src/linux
    make-kpkg clean
    cp /usr/src/linux-config/$EXTRAVERSION /usr/src/linux/.config
    make-kpkg --initrd --revision $REVISION \
        --append_to_version $EXTRAVERSION binary modules_image
    dpkg -i kernel-image-2.4.22$EXTRAVERSION_$REVISION_i386.deb
    grub-menugen > /boot/grub/menu.lst

That ''grub-menugen'' is a straightforward Perl script which
regenerates
menu.lst from what it finds in /boot, putting the most recent kernel at
the top of the list as the boot default.

You can extrapolate from there to see what''s happening with modules.

Steve
-- 
Stephen G. Traugott  (KG6HDQ)
UNIX/Linux Infrastructure Architect, TerraLuna LLC
stevegt@TerraLuna.Org 
http://www.stevegt.com -- http://Infrastructures.Org

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