xen-4.8-rc7 in Stretch with linux-image 4.8 fails to boot domU with pv-grub

xen-4.8-rc7 in Stretch with linux-image 4.8 fails to boot domU with pv-grub

[Mark Pryor]

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List,
Built & packaged xen 4.8-rc7 in Stretch (deb9) today.
xen-4.8-rc7 in Stretch with linux-image 4.8, fails to boot domU kernel with pv-grub:     https://paste.debian.net/plain/899726
from config/Tools.mk: ZLIB   :=  -DHAVE_BZLIB -lbz2 -DHAVE_LZMA -llzma -DHAVE_LZO1X -llzo2
this worked with 4.8-rc6, as of Nov. 23.
I also tried to downgrade the pv-grub to 4.6 and it still failed, so I suspect some interaction with xl.

I found the exact same behavior in Ubuntu Xenial, that is none of my pv-grub domU start.
However regular pygrub, and pv-grub2 are working fine to boot the same domU.

Such a small handful of patches in the last 7 days caused this. I can't narrow it down, so this report will do.
PryMar56



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Re: xen-4.8-rc7 in Stretch with linux-image 4.8 fails to boot domU with pv-grub

[Jan Beulich]

>>> On 30.11.16 at 01:29, <tlviewer@yahoo.com> wrote:
> Built & packaged xen 4.8-rc7 in Stretch (deb9) today.
> xen-4.8-rc7 in Stretch with linux-image 4.8, fails to boot domU kernel with 
> pv-grub:     https://paste.debian.net/plain/899726 
> from config/Tools.mk: ZLIB   :=  -DHAVE_BZLIB -lbz2 -DHAVE_LZMA -llzma 
> -DHAVE_LZO1X -llzo2
> this worked with 4.8-rc6, as of Nov. 23.
> I also tried to downgrade the pv-grub to 4.6 and it still failed, so I 
> suspect some interaction with xl.
> 
> I found the exact same behavior in Ubuntu Xenial, that is none of my pv-grub 
> domU start.
> However regular pygrub, and pv-grub2 are working fine to boot the same domU.
> 
> Such a small handful of patches in the last 7 days caused this. I can't 
> narrow it down, so this report will do.

The log you've pointed to does not appear to have any indication of
a failure, so I'm not sure what you expect anyone to deduce from it.
Also none of the commits since rc6 look in any way suspicious, so I'm
afraid we'll need some more data (unless someone can repro and
debug).

Jan


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Re: xen-4.8-rc7 in Stretch with linux-image 4.8 fails to boot domU with pv-grub

[Juergen Gross]

On 30/11/16 10:41, Jan Beulich wrote:
>>>> On 30.11.16 at 01:29, <tlviewer@yahoo.com> wrote:
>> Built & packaged xen 4.8-rc7 in Stretch (deb9) today.
>> xen-4.8-rc7 in Stretch with linux-image 4.8, fails to boot domU kernel with 
>> pv-grub:     https://paste.debian.net/plain/899726 
>> from config/Tools.mk: ZLIB   :=  -DHAVE_BZLIB -lbz2 -DHAVE_LZMA -llzma 
>> -DHAVE_LZO1X -llzo2
>> this worked with 4.8-rc6, as of Nov. 23.
>> I also tried to downgrade the pv-grub to 4.6 and it still failed, so I 
>> suspect some interaction with xl.
>>
>> I found the exact same behavior in Ubuntu Xenial, that is none of my pv-grub 
>> domU start.
>> However regular pygrub, and pv-grub2 are working fine to boot the same domU.

I can't reproduce this issue. pvgrub is working just fine booting either
a 3.0 or a 4.9 pv-kernel (used a fresh xen git tree from staging).

Can you please start the domain with

xl create -c <your-config>

and have a look whether you see some error output from pvgrub? You
might want to redirect output to a file or issue the command in a
terminal window with logging enabled as the pvgrub menu will blank
out some of the output.


Juergen

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Re: xen-4.8-rc7 in Stretch with linux-image 4.8 fails to boot domU with pv-grub

[Mark Pryor]

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Sorry for the noise. I had the debian build flags like:====== flags =======
DPKG_EXPORT_BUILDFLAGS = 1
include /usr/share/dpkg/default.mk
export DEB_BUILD_MAINT_OPTIONS=hardening=-pie======= snip ======
this caused pv-grub to fail to boot domUOnce I usedexport DEB_BUILD_MAINT_OPTIONS=hardening=-all
and rebuilt, things were good again.
PryMar56
 

    On Wednesday, November 30, 2016 3:59 AM, Juergen Gross <jgross@suse.com> wrote:
 

 On 30/11/16 10:41, Jan Beulich wrote:
>>>> On 30.11.16 at 01:29, <tlviewer@yahoo.com> wrote:
>> Built & packaged xen 4.8-rc7 in Stretch (deb9) today.
>> xen-4.8-rc7 in Stretch with linux-image 4.8, fails to boot domU kernel with 
>> pv-grub:    https://paste.debian.net/plain/899726 
>> from config/Tools.mk: ZLIB  :=  -DHAVE_BZLIB -lbz2 -DHAVE_LZMA -llzma 
>> -DHAVE_LZO1X -llzo2
>> this worked with 4.8-rc6, as of Nov. 23.
>> I also tried to downgrade the pv-grub to 4.6 and it still failed, so I 
>> suspect some interaction with xl.
>>
>> I found the exact same behavior in Ubuntu Xenial, that is none of my pv-grub 
>> domU start.
>> However regular pygrub, and pv-grub2 are working fine to boot the same domU.

I can't reproduce this issue. pvgrub is working just fine booting either
a 3.0 or a 4.9 pv-kernel (used a fresh xen git tree from staging).

Can you please start the domain with

xl create -c <your-config>

and have a look whether you see some error output from pvgrub? You
might want to redirect output to a file or issue the command in a
terminal window with logging enabled as the pvgrub menu will blank
out some of the output.


Juergen


   

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