Re: [Xen-users] pv guest fails to start after 4.2 upgrade

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-02-25 at 22:47 +0000, Travis Osterman wrote:
> >>> >> I also tried to take pvgrub out of the picture so I mounted the image
> >>> >> and copied my initrd and kernel to the dom0 file system and updated my
> >>> >> config with the appropriate ramdisk and kernel lines.
> >>> >>
> >>> >> Full output without pvgrub
> >>> >> http://pastebin.com/c7VWWwXk
> >>> >>
> >>> >> Which dropped me in a shell asking for my root partition (progress).
> >>>
> >>> # cat /var/log/xen/qemu-dm-prime.log
> >>> bind(unix:/var/run/xen/qmp-libxl-4): No such file or directory
> >>> chardev: opening backend "socket" failed: No such file or directory
> >>>
> >>> # ls /var/run/xen*
> >>> /var/run/xenconsoled.pid  /var/run/xenstored.pid
> >>>
> >>> /var/run/xenstored:
> >>> socket  socket_ro
> >>
> >> Ah, you are missing the /var/run/xen/ directory so it is failing to
> >> create the socket, if you create the directory does it work? Although
> >> even if so it is obviously still a bug that libxl doesn't handle that
> >> error...
> >
> > Ian,
> >
> > I can confirm the manually creating /var/run/xen fixes the problem.  I
> > updated my bug report here
> > https://bugs.gentoo.org/show_bug.cgi?id=459082
> >
> > Thank you for the help.
> >
> 
> Similar error not solved by the above on a domain using pygrub (pvgrub works)
> 
> /var/log/xen/qemu-dm-domain.log
> /var/tmp/portage/app-emulation/xen-tools-4.1.1-r6/work/xen-4.1.1/tools/ioemu-qemu-xen/hw/xen_blktap.
> c:628: Init blktap pipes
> Could not open /var/run/tap/qemu-read-2

Do you have /var/run/tap ?

I'm a bit surprised to see the qemu tap support getting activated, I
didn't think it was used for anything there days.

Ian.


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