XEN and Fedora-19 domU

[Marcel J.E. Mol]

Hi there,

I setup Fedora19-Beta (plus updates) as a XEN server and installed a
Fedora 19 as a domU client.

Unfortunately the domU client failed to boot. After some investigation
it turned out to be the grub.cfg file in the client that caused XEN
pygrub to fail.

The fix is not to difficult and I posted a git patch to the XEN devel list.
This patch might make it into XEN 4.3, but I guess XEN 4.3 will not
be part of Fedora 19.

I guess it would be a shame if Fedora 19 cannot be used as a XEN client so
maybe the patch can be added to the Fedora xen tree?

This is the patch as send to the XEN list:


Date: Sat, 22 Jun 2013 22:33:55 +0200
Subject: [PATCH] pygrub/GrubConf: fix boot problem for fedora 19 grub.cfg

Booting a fedora 19 domU failed because a it could not properly
parse the grub.cfg file. This was cased by

	set default="${next_entry}"

This statement actually is within an 'if' statement, so maybe it would
be better to skip code within if/fi blocks...
But this patch seems to work fine.

Signed-off-by: Marcel Mol <marcel(a)mesa.nl&gt;
---
 tools/pygrub/src/GrubConf.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/pygrub/src/GrubConf.py b/tools/pygrub/src/GrubConf.py
index 629951f..6324c62 100644
--- a/tools/pygrub/src/GrubConf.py
+++ b/tools/pygrub/src/GrubConf.py
@@ -427,6 +427,8 @@ class Grub2ConfigFile(_GrubConfigFile):
                 if self.commands[com] is not None:
                     if arg.strip() == "${saved_entry}":
                         arg = "0"
+                    elif arg.strip() == "${next_entry}":
+                        arg = "0"
                     setattr(self, self.commands[com], arg.strip())
                 else:
                     logging.info("Ignored directive %s" %(com,))
-- 
1.7.7.6

Thanks

-Marcel
-- 
     ======--------         Marcel J.E. Mol                MESA Consulting B.V.
    =======---------        ph. [phone]          P.O. Box 112
    =======---------        marcel(a)mesa.nl                 2630 AC  Nootdorp
__==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
 They couldn't think of a number,           Linux user 1148  --  counter.li.org
    so they gave me a name!  -- Rupert Hine  --  www.ruperthine.com

[Marcel J.E. Mol]

What happened to my post. It seems liek most lines are yanked together

making it unreadable.

That is not the way I posted it (using mutt)!

-Marcel

-- 
     ======--------         Marcel J.E. Mol                MESA Consulting B.V.
    =======---------        ph. [phone]          P.O. Box 112
    =======---------        marcel(a)mesa.nl                 2630 AC  Nootdorp
__==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
 They couldn't think of a number,           Linux user 1148  --  counter.li.org
    so they gave me a name!  -- Rupert Hine  --  www.ruperthine.com

[Adam Williamson]

On Wed, 2013-06-26 at 20:40 +0200, Marcel J.E. Mol wrote:
>  Hi there,
>  
>  I setup Fedora19-Beta (plus updates) as a XEN server and installed a
>  Fedora 19 as a domU client. 
You may want to check these bugs:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977974
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977987
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=978036

and compare notes with Konrad and Dario. Thanks!
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net

[Marcel J.E. Mol]

On Wed, Jun 26, 2013 at 01:22:21PM -0700, Adam Williamson wrote:
>  On Wed, 2013-06-26 at 20:40 +0200, Marcel J.E. Mol wrote:> Hi
> there,> > I setup Fedora19-Beta (plus updates) as a XEN server and installed a>
> Fedora 19 as a domU client.
>  You may want to check these bugs:
>
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977974https://bugzil...
>  and compare notes with Konrad and Dario. Thanks!-- Adam WilliamsonFedora QA Community
> MonkeyIRC: adamw | Twitter: AdamW_Fedora | identi.ca:
> adamwfedorahttp://www.happyassassin.net
>  -- devel mailing
> [e-mail]://admin.fedoraproject.org/mailman/listinfo/devel
Yes, only 978036 is relevant for thsi case. Konrad refers to my
patch posted to the xen-devel list.
Konrad mentioned this bugzilla number but I was not aware he
added this to it. 

Does that mean this will be included in the final Fedora 19?

-Marcel
-- 
     ======--------         Marcel J.E. Mol                MESA Consulting B.V.
    =======---------        ph. [phone]          P.O. Box 112
    =======---------        marcel(a)mesa.nl                 2630 AC  Nootdorp
__==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
 They couldn't think of a number,           Linux user 1148  --  counter.li.org
    so they gave me a name!  -- Rupert Hine  --  www.ruperthine.com

[Adam Williamson]

On Wed, 2013-06-26 at 23:21 +0200, Marcel J.E. Mol wrote:
>  On Wed, Jun 26, 2013 at 01:22:21PM -0700, Adam Williamson wrote:
>  > On Wed, 2013-06-26 at 20:40 +0200, Marcel J.E. Mol wrote:> Hi there,> > I
> setup Fedora19-Beta (plus updates) as a XEN server and installed a> Fedora 19 as a domU
> client.
>  > You may want to check these bugs:
>  >
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977974https://bugzil...
>  > and compare notes with Konrad and Dario. Thanks!-- Adam WilliamsonFedora QA
> Community MonkeyIRC: adamw | Twitter: AdamW_Fedora | identi.ca:
> adamwfedorahttp://www.happyassassin.net
>  > -- devel mailing
> [e-mail]://admin.fedoraproject.org/mailman/listinfo/devel
>  
>  Yes, only 978036 is relevant for thsi case. Konrad refers to my
>  patch posted to the xen-devel list.
>  Konrad mentioned this bugzilla number but I was not aware he
>  added this to it. 
>  
>  Does that mean this will be included in the final Fedora 19? 
At present, no. I'm relying on Konrad's reading of the situation and he
seems to think that F19 is fundamentally capable of operating as DomU
and we can fix the problems with post-release updates - we don't
actually need to fix anything in the release images themselves. Do you
disagree with this assessment?
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net

[Adam Williamson]

On Wed, 2013-06-26 at 14:24 -0700, Adam Williamson wrote:
>  On Wed, 2013-06-26 at 23:21 +0200, Marcel J.E. Mol wrote:
>  > On Wed, Jun 26, 2013 at 01:22:21PM -0700, Adam Williamson wrote:
>  > > On Wed, 2013-06-26 at 20:40 +0200, Marcel J.E. Mol wrote:> Hi there,>
> > I setup Fedora19-Beta (plus updates) as a XEN server and installed a> Fedora 19 as
> a domU client.
>  > > You may want to check these bugs:
>  > >
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977974https://bugzil...
>  > > and compare notes with Konrad and Dario. Thanks!-- Adam WilliamsonFedora QA
> Community MonkeyIRC: adamw | Twitter: AdamW_Fedora | identi.ca:
> adamwfedorahttp://www.happyassassin.net
>  > > -- devel mailing
> [e-mail]://admin.fedoraproject.org/mailman/listinfo/devel
>  > 
>  > Yes, only 978036 is relevant for thsi case. Konrad refers to my
>  > patch posted to the xen-devel list.
>  > Konrad mentioned this bugzilla number but I was not aware he
>  > added this to it. 
>  > 
>  > Does that mean this will be included in the final Fedora 19?
>  
>  At present, no. I'm relying on Konrad's reading of the situation and he
>  seems to think that F19 is fundamentally capable of operating as DomU
>  and we can fix the problems with post-release updates - we don't
>  actually need to fix anything in the release images themselves. Do you
>  disagree with this assessment? 
Note that by 'not included' what I mean is at present I'm under the
impression we do not need a fixed package in the final frozen F19
package set and on the DVD. If the update gets sufficient karma and is
submitted for stable before the release day, it will be in the 'updates'
repository on release day, i.e. it will be a 0-day update.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net

[Marcel J.E. Mol]

On Wed, Jun 26, 2013 at 02:27:32PM -0700, Adam Williamson wrote:
>  On Wed, 2013-06-26 at 14:24 -0700, Adam Williamson wrote:> On Wed,
> 2013-06-26 at 23:21 +0200, Marcel J.E. Mol wrote:> > On Wed, Jun 26, 2013 at
> 01:22:21PM -0700, Adam Williamson wrote:> > > On Wed, 2013-06-26 at 20:40 +0200,
> Marcel J.E. Mol wrote:> Hi there,> > I setup Fedora19-Beta (plus updates) as a
> XEN server and installed a> Fedora 19 as a domU client.> > > You may want to
> check these bugs:> > >
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=977974https://bugzil...
> > > and compare notes with Konrad and Dario. Thanks!-- Adam WilliamsonFedora QA
> Community MonkeyIRC: adamw | Twitter: AdamW_Fedora | identi.ca:
> adamwfedorahttp://www.happyassassin.net> > > -- devel mailing
> [e-mail]://admin.fedoraproject.org/mailman/listinfo/devel>
> > > > Yes, only 978036 is relevant for thsi case. Konrad refers to my> >
> patch posted to the xen-devel list.> > Konrad mentioned this bugzilla number but I
> was not aware he> > added this to it. > > > > Does that mean this will
> be included in the final Fedora 19?> > At present, no. I'm relying on
> Konrad's reading of the situation and he> seems to think that F19 is fundamentally
> capable of operating as DomU> and we can fix the problems with post-release updates -
> we don't> actually need to fix anything in the release images themselves. Do
> you> disagree with this assessment?
>  Note that by 'not included' what I mean is at present I'm under theimpression
> we do not need a fixed package in the final frozen F19package set and on the DVD. If the
> update gets sufficient karma and issubmitted for stable before the release day, it will be
> in the 'updates'repository on release day, i.e. it will be a 0-day update. 
Either way is fine for me. I think it just good that xen works ok with f19, as dom0 or as
domU.

Thanks,

-Marcel
-- 
     ======--------         Marcel J.E. Mol                MESA Consulting B.V.
    =======---------        ph. [phone]          P.O. Box 112
    =======---------        marcel(a)mesa.nl                 2630 AC  Nootdorp
__==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
 They couldn't think of a number,           Linux user 1148  --  counter.li.org
    so they gave me a name!  -- Rupert Hine  --  www.ruperthine.com

[Dario Faggioli]

On gio, 2013-06-27 at 13:35 +0200, Marcel J.E. Mol wrote:
>  Either way is fine for me. I think it just good that xen works ok
> with f19, as dom0 or as domU.
>   
Indeed, and it does quite well, as per mine and Konrad's testing, with
the fixes proposed in the bugreports Adam was mentioning, one of which
is your patch (thanks again).

Also, sorry for noticing this only now... I future, feel free to Cc me
and/or Konrad, and/or the xen@ (xen(a)lists.fedoraproject.org) mailing
list for Xen on Fedora related stuff. :-)

Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)