Pkg xen devel - Aug 2015 - Bug#507020: xen-utils-3.2-1: Pygrub says "Error: Boot loader didn't return any data!"

Package: xen-utils-3.2-1
Version: 3.2.1-2
Severity: normal


When my domU uses this configuration:
---
root        = '/dev/sda2 ro'
disk        = [
                  'phy:/dev/volume0/lenny.vandervlis.nl-swap,sda1,w',
                  'phy:/dev/volume0/lenny.vandervlis.nl-disk,sda2,w',
              ]
---

Pygrub gives the error "Error: Boot loader didn't return any
data".
In the xend.log I see:
----
Launching bootloader as ['/usr/lib/xen-3.2-1/bin/pygrub', 
'--args=root=/dev/sda2 ro console=xvc0 xencons=xvc0',
'--output=/var/run/xend/boot/xenbl.21780', '-q',
'/dev/volume0/lenny.vandervlis.nl-swap'].
----

Switching the disk statements helps as a workarround, so this work:
----
disk        = [
                  'phy:/dev/volume0/lenny.vandervlis.nl-disk,sda2,w',
                  'phy:/dev/volume0/lenny.vandervlis.nl-swap,sda1,w',
              ]
----

Ian Campbell wrote about this problem:
---
This code in /usr/lib/xen-3.2-1/lib/python/xen/xend/XendDomainInfo.py
looks suspect
                    disks = [x for x in self.info['vbd_refs']
                             if
self.info['devices'][x][1]['bootable']]
        
                    if not disks:
                        msg = "Had a bootloader specified, but no disks 
are bootable"
                        log.error(msg)
                        raise VmError(msg)
        
                    devinfo = self.info['devices'][disks[0]]
It goes to the trouble of making a list of bootable devices but then
ignores it and goes back to self.info['devices']. I'd guess that the
last line here should be:
		devinfo = disks[0]
Although I don't know how you make bootable be true. You may find
bringing this up on xen-devel useful.
-----

With regards,
Paul van der Vlis.


-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-xen-amd64 (SMP w/2 CPU cores)
Locale: LANG=nl_NL.UTF-8, LC_CTYPE=nl_NL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages xen-utils-3.2-1 depends on:
ii  e2fslibs               1.41.3-1          ext2 filesystem libraries
ii  iproute                20080725-2        networking and traffic control too
ii  libc6                  2.7-15            GNU C Library: Shared libraries
ii  libgcrypt11            1.4.1-1           LGPL Crypto library - runtime libr
ii  libgnutls26            2.4.2-1           the GNU TLS library - runtime libr
ii  libncurses5            5.6+20080830-1    shared libraries for terminal hand
ii  libsdl1.2debian        1.2.13-2          Simple DirectMedia Layer
ii  libxenstore3.0         3.2.1-2           Xenstore communications library fo
ii  python                 2.5.2-3           An interactive high-level object-o
ii  python-central         0.6.8             register and build utility for Pyt
ii  udev                   0.125-7           /dev/ and hotplug management daemo
ii  xen-utils-common       3.2.0-2           XEN administrative tools - common 
ii  zlib1g                 1:1.2.3.3.dfsg-12 compression library - runtime

Versions of packages xen-utils-3.2-1 recommends:
ii  bridge-utils                  1.4-5      Utilities for configuring the Linu
ii  xen-hypervisor-3.2-1-amd64 [x 3.2.1-2    The Xen Hypervisor on AMD64

Versions of packages xen-utils-3.2-1 suggests:
ii  xen-docs-3.2                  3.2.1-2    Documentation for Xen

-- no debconf information

Control: tags -1 +moreinfo

Sorry this bug seems to have fallen through the cracks.

On Thu, 27 Nov 2008 09:34:19 +0100 Paul van der Vlis <paul at
vandervlis.nl> wrote:
> You may find bringing this up on xen-devel useful.
Did you bring this up on the upstream list? Does this bug still occur
for you?

Thanks,
Ian.

Processing control commands:
> tags -1 +moreinfo
Bug #507020 [src:xen] xen-utils-3.2-1: Pygrub says "Error: Boot loader
didn't return any data!"
Added tag(s) moreinfo.

-- 
507020: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507020
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems

Processing control commands:
> tags -1 +moreinfo
Bug #507020 [src:xen] xen-utils-3.2-1: Pygrub says "Error: Boot loader
didn't return any data!"
Ignoring request to alter tags of bug #507020 to the same tags previously set

-- 
507020: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507020
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems

Op 21-08-15 om 17:32 schreef Ian Campbell:
> Control: tags -1 +moreinfo
> 
> Sorry this bug seems to have fallen through the cracks.
> 
> On Thu, 27 Nov 2008 09:34:19 +0100 Paul van der Vlis <paul at
vandervlis.nl> wrote:
>> You may find bringing this up on xen-devel useful.
> 
> Did you bring this up on the upstream list? 
No.
> Does this bug still occur for you?
I am using the workarround I wrote about. The only Xen instance I have
is old. I don't know if it happens on a up-to-date Xen system.

With regards,
Paul van der Vlis.



-- 
Paul van der Vlis Linux systeembeheer Groningen
https://www.vandervlis.nl/

Hi Paul,

This is about the bug report (#507020) about pygrub that you filed
before 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).

Can you please help us by confirming that any of the following scenarios
does apply to your situation?

* I had this problem a long time ago. It was never solved, but I found a
workaround, which is ...
* I had this problem a long time ago, and I solved it by not using Xen
any more, but by doing ...
* I still experience this problem, and I'm still using Xen
3.2/4.1/4.4/etc. I cannot upgrade to Debian Stretch or Buster because ...
* I had this problem, and since upgrading to Stretch / Buster / ? it
seems it was solved, and I forgot to report it again. Please close it,
thanks.
* Other: ...

Note that even if you found a solution, it's still very useful to report
it back to our bug tracker. There might be someone else running into the
same problem, who can be helped with your information.

Please note that unless there's a response within a while 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

Your message dated Sat, 23 Feb 2019 14:18:12 +0100
with message-id <2fbea6c1-cfd3-2006-4905-85a97ad17f38 at vandervlis.nl>
and subject line Re: xen-utils-3.2-1: Pygrub says "Error: Boot loader
didn't return any data!"
has caused the Debian Bug report #507020,
regarding xen-utils-3.2-1: Pygrub says "Error: Boot loader didn't
return any data!"
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.)


-- 
507020: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507020
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems
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