Re: pvgrub regression in xen.git 123c77937975

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Fri, May 08, 2015 at 05:16:49PM +0100, Ian Campbell wrote:
> There seems to be a pvgrub regression somewhere in the range
> 3a28f760508f..123c77937975 instead of booting the selected kernel I get:
>         
>         Booting 'Debian GNU/Linux, kernel 3.2.0-4-amd64'
>         
>         root  (hd0,0)
>         
>          Filesystem type is ext2fs, partition type 0x83
>         
>         kernel  /boot/vmlinuz-3.2.0-4-amd64 root=UUID=59fd4a5b-040d-4f59-8fc3-19324ddb4
>         
>         0b7 ro 
>         
>         initrd  /boot/initrd.img-3.2.0-4-amd64
>         
>         ============= Init TPM Front ================
>         Tpmfront:Error Unable to read device/vtpm/0/backend-id during tpmfront initialization! error = ENOENT
>         Tpmfront:Info Shutting down tpmfront
>         xc_dom_build_image returned -1
>         
>         close(3)
>         
>         Error 9: Unknown boot failure
>         
>         Press any key to continue...
>         
> This was spotted in ad-hoc testing on the Cambridge osstest instance of
> my distro testing series[0] (which adds pvgrub tests to the main flights
> too). i386 guests fail in the same way.
> 
> I've attempted to convince osstest to have a stab at bisecting, but
> glancing at the log over tools/libxc tools/stubdom I suspect either
> Konrad's cleanups to libxc error handling or Wei's "libxc: add p2m_size
> to xc_dom_image".

Hey Ian,

I am soo woefully behind emails - sorry for late reply.

I don't have anything on my mind which could be the fault of this - but
I am curious of the bisection results.
> 
> Anyway, just a heads up in case something springs to mind, otherwise
> I'll let the bisector churn at it over the weekend. There's been a few
> false starts but if you are within Citrix you can see the progress (I
> hope) at http://osstest.xs.citrite.net/~ianc/summary2.html (so far it's
> just trying to reproduce the basis cases, and has been tripping over the
> xen.git:5d4c0952f issue, now hacked around I hope)
> 
> Ian.
> 
> [0] http://mid.gmane.org/<1430905605.2660.187.camel@citrix.com>
>