Pkg xen devel - Jan 2019 - Bug#783346: Bug #783346: patch for booting Jessie domU with wheezy dom0

Package: xen-utils-4.1
Version: 4.1.4-3+deb7u4
Severity: serious
Tags: patch

dom0 running wheezy

domU upgraded from wheezy to jessie.  The domU doesn't boot any more,
errors:

Error code: Using <class 'grub.GrubConf.Grub2ConfigFile'> to parse
/grub/grub.cfg
Error parameters: Traceback (most recent call last):,   File
"/usr/lib/xcp/lib/pygrub.xcp", line 853, in <module>,     raise
RuntimeError, "Unable to find partition containing kernel",
RuntimeError: Unable to find partition containing kernel,


The attached one-line patch to dom0
/usr/lib/xen-4.1/lib/python/grub/GrubConf.py fixes the issue


This should probably be released in an update to wheezy.


References:

http://danielpocock.com/xcp-xenserver-and-debian-jessie

http://ubuntuforums.org/showthread.php?t=2216358&page=2&p=13006428#post13006428

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Hi Daniel

On Sun, Apr 26, 2015 at 10:35:01AM +0200, Daniel Pocock
wrote:
> This should probably be released in an update to wheezy.
Well, if you can pursuade the release team.  We have grub2 for Xen in
Jessie now and it can be used on Wheezy as well.

Bastian

-- 
Beam me up, Scotty, there's no intelligent life down here!
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On 26/04/15 10:45, Bastian Blank wrote:
> Hi Daniel
> 
> On Sun, Apr 26, 2015 at 10:35:01AM +0200, Daniel Pocock wrote:
>> This should probably be released in an update to wheezy.
> 
> Well, if you can pursuade the release team.  We have grub2 for Xen
> in Jessie now and it can be used on Wheezy as well.
> 
Can you be more specific?  If somebody is running a wheezy dom0 and
they install grub2 in their domU before rebooting it the first time,
they will not have this problem?

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Laba diena,


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reassign 783346 src:xen 4.1.4-3+deb7u4
severity 783346 normal
thanks

Hi Daniel,

This is about the bug report that you filed before about pygrub in the
Debian bug tracker against the Xen packages.

Your bug report was targeted at a Xen package in a Debian distribution
older than the current stable (Stretch), and I'm trying to clean up our
open bug report list a bit.

In the bug history, I see that already was suggested to use the grub2
based way of booting the virtual machines instead of pygrub. This is
still recommended.

Addtionally, the grub-xen-* packages in Debian Buster will now also be
able to boot a Xen domU using the new PVH virtualization mode, if you
use the Debian Linux 4.19 kernel package inside.

Am I right to understand that we can close this bug report now?

---- >8 ----

Please note that unless there's a response within a month from now, we
will close the bug report. If you discover this message later, and this
case is important to you, then you can try unarchiving the bug and
replying to it, or reach out to the maintainers email list at
pkg-xen-devel at lists.alioth.debian.org (no subscription required) and
post a message.

Thanks,
Hans van Kranenburg

Processing commands for control at bugs.debian.org:
> reassign 783346 src:xen 4.1.4-3+deb7u4
Bug #783346 [xen-utils-4.1] patch for booting Jessie domU with wheezy dom0
Bug reassigned from package 'xen-utils-4.1' to 'src:xen'.
No longer marked as found in versions xen/4.1.4-3+deb7u4.
Ignoring request to alter fixed versions of bug #783346 to the same values
previously set
Bug #783346 [src:xen] patch for booting Jessie domU with wheezy dom0
Marked as found in versions xen/4.1.4-3+deb7u4.
> severity 783346 normal
Bug #783346 [src:xen] patch for booting Jessie domU with wheezy dom0
Severity set to 'normal' from 'serious'
> thanks
Stopping processing here.

Please contact me if you need assistance.
-- 
783346: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=783346
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems

On 20/01/2019 19:01, Hans van Kranenburg wrote:
> reassign 783346 src:xen 4.1.4-3+deb7u4
> severity 783346 normal
> thanks
> 
> Hi Daniel,
> 
> This is about the bug report that you filed before about pygrub in the
> Debian bug tracker against the Xen packages.
> 
> Your bug report was targeted at a Xen package in a Debian distribution
> older than the current stable (Stretch), and I'm trying to clean up our
> open bug report list a bit.
> 
> In the bug history, I see that already was suggested to use the grub2
> based way of booting the virtual machines instead of pygrub. This is
> still recommended.
> 
> Addtionally, the grub-xen-* packages in Debian Buster will now also be
> able to boot a Xen domU using the new PVH virtualization mode, if you
> use the Debian Linux 4.19 kernel package inside.
> 
> Am I right to understand that we can close this bug report now?
> 
If you are still distributing the script with the bug, then I would
recommend:

a) check if the patch is now included upstream, if yes, close the bug, or

b) include the patch in the Debian package, or

c) stop installing the pygrub script in the package so that users have
to use pygrub2 or something else.

However, I migrated from Xen to KVM so I'm not using the package
personally any more.

Regards,

Daniel

On Tue, Jan 22 2019 at 08:26:52 +0100, Daniel Pocock scribbled
 in "Re: Bug #783346: patch for booting Jessie domU with wheezy
dom0":
> On 20/01/2019 19:01, Hans van Kranenburg wrote:
> > reassign 783346 src:xen 4.1.4-3+deb7u4
> > severity 783346 normal
> > thanks
> > 
> > Hi Daniel,
> > 
> > This is about the bug report that you filed before about pygrub in
> > the Debian bug tracker against the Xen packages.
> > 
> > Your bug report was targeted at a Xen package in a Debian
> > distribution older than the current stable (Stretch), and I'm
> > trying to clean up our open bug report list a bit.
> > 
> > In the bug history, I see that already was suggested to use the
> > grub2 based way of booting the virtual machines instead of pygrub.
> > This is still recommended.
> > 
> > Addtionally, the grub-xen-* packages in Debian Buster will now
> > also be able to boot a Xen domU using the new PVH virtualization
> > mode, if you use the Debian Linux 4.19 kernel package inside.
> > 
> > Am I right to understand that we can close this bug report now?
> 
> If you are still distributing the script with the bug, then I would
> recommend:
> 
> a) check if the patch is now included upstream, if yes, close the
>    bug, or
> 
> b) include the patch in the Debian package, or
> 
> c) stop installing the pygrub script in the package so that users
>    have to use pygrub2 or something else.
> 
> However, I migrated from Xen to KVM so I'm not using the package
> personally any more.
A (albeit quick) look through the changelogs and the ELTS packages
from Freexian appear to have the patch applied (or at least the fix is
in place), though this bug doesn't appear to be referenced anywhere,
so it's quite possible that as the ELTS package is a newer version,
the fix was just included in the backport.

I'd say the bug can be closed, as anyone still using a Wheezy Dom0
should probably be getting packages from ELTS anyway.

Cheers.

Dameon.

-- 
><> ><> ><> ><> ><> ><>
ooOoo <>< <>< <>< <>< <><
<><
Dr. Dameon Wagner, Unix Platform Services
IT Services, University of Oxford
><> ><> ><> ><> ><> ><>
ooOoo <>< <>< <>< <>< <><
<><

Hi Daniel, Dameon,

On 1/22/19 8:26 AM, Daniel Pocock wrote:
> 
> 
> On 20/01/2019 19:01, Hans van Kranenburg wrote:
>> reassign 783346 src:xen 4.1.4-3+deb7u4
>> severity 783346 normal
>> thanks
>>
>> Hi Daniel,
>>
>> This is about the bug report that you filed before about pygrub in the
>> Debian bug tracker against the Xen packages.
>>
>> Your bug report was targeted at a Xen package in a Debian distribution
>> older than the current stable (Stretch), and I'm trying to clean up
our
>> open bug report list a bit.
>>
>> In the bug history, I see that already was suggested to use the grub2
>> based way of booting the virtual machines instead of pygrub. This is
>> still recommended.
>>
>> Addtionally, the grub-xen-* packages in Debian Buster will now also be
>> able to boot a Xen domU using the new PVH virtualization mode, if you
>> use the Debian Linux 4.19 kernel package inside.
>>
>> Am I right to understand that we can close this bug report now?
>>
> 
> If you are still distributing the script with the bug, then I would
> recommend:
> 
> a) check if the patch is now included upstream, if yes, close the bug, or
Yes, this is in since 4.5 upstream:

https://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=d1b93ea2615bd789ee28901f1f1c05ffb319cb61

It's also in 4.4.2, but Jessie packages are stuck at 4.4.1.
> b) include the patch in the Debian package, or
> 
> c) stop installing the pygrub script in the package so that users have
> to use pygrub2 or something else.
In general it's really recommended to stop using pygrub and use the
grub2 based alternatives.
> However, I migrated from Xen to KVM so I'm not using the package
> personally any more.
Ok, closing now.

Thanks for your response.

Hans

Your message dated Tue, 22 Jan 2019 16:51:20 +0100
with message-id <4a9177b6-1489-6007-acdb-14642def16d3 at knorrie.org>
and subject line Re: Bug #783346: patch for booting Jessie domU with wheezy dom0
has caused the Debian Bug report #783346,
regarding patch for booting Jessie domU with wheezy dom0
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner at bugs.debian.org
immediately.)


-- 
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