Re: [Xen-users] Unable to start xend

[Forest Belton <fbelton@xxxxxxxxxxxxx>]

Hi,
  Thank you all for the help! I was booting a Xen kernel, but it turns out 
/proc/xen wasn't mounted correctly, as you said. Things seem to be working 
smoothly now, and I'll look into xl/libxl as suggested. Also thanks for the 
FAQ link, as the one I found did not contain the same information on it.
Sincerely,
  Forest

On Mon, 11 Jul 2011, Todd Deshane wrote:

> On Mon, Jul 11, 2011 at 4:55 PM, Forest Belton <fbelton@xxxxxxxxxxxxx> wrote:
> > Hi,
> >  I'm trying to install Xen on Ubuntu 11.04. I read somewhere (please correct
> > me if this is wrong) that Ubuntu hasn't had dom0 support since 8.04 LTS, and
> > the recommended action was to grab a dom0-enabled kernel from Debian, so I
> > did. I'm running 2.6.32-5-xen-amd64 and built Xen 4.1.1 from source. After
> > installation and some troubleshooting, I tried to start xend. Here is the
> > result:
> >
> > vmtest@morphy:~$ xend start
> > xc: error: Could not obtain handle on privileged command interface (2 = No
> > such file or directory): Internal error
> > Traceback (most recent call last):
> >  File "/usr/sbin/xend", line 36, in <module>
> >    from xen.xend.server import SrvDaemon
> >  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/SrvDaemon.py",
> > line 26, in <module>
> >    import relocate
> >  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/relocate.py",
> > line 28, in <module>
> >    from xen.xend import XendDomain
> >  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomain.py", line
> > 36, in <module>
> >    from xen.xend import XendOptions, XendCheckpoint, XendDomainInfo
> >  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendCheckpoint.py",
> > line 20, in <module>
> >    from xen.xend import balloon, sxp, image
> >  File "/usr/local/lib/python2.7/dist-packages/xen/xend/image.py", line 46,
> > in <module>
> >    xc = xen.lowlevel.xc.xc()
> > xen.lowlevel.xc.Error: (1, 'Internal error', 'xc_interface_open failed: No
> > such file or directory')
> >
> > Some searching led me to believe that this error occurs when I haven't
> > booted into a Xen kernel, but this confuses me as I am fairly certain I
> > have. /sys/hypervisor exists as well as /dev/xen. What have I overlooked? I
> > apologize in advance if I have posted to the wrong mailing list.
> I'm guessing that you haven't booting into the Xen kernel directly and
> it is a grub2 issue. (you can search xen.markmail.org for related
> issues - let us know if you are unable to find anything)
>
> If not, another thing you can look into is making sure /proc/xen is
> mounted properly.
>
> Post the output of uname -a and dmesg. You can also go into the grub
> settings, turn off the splash, turn on verbose and watch the Xen
> hypervisor and dom0 load.
>
> Also of note, upstream Linux 3.x kernels boot Dom0 now and Ubuntu
> unstable is packaging them. You could try to grab one of those and
> boot from it.
>
> Thanks,
> Todd
>
> > Sincerely,
> >  Forest
> --
> Todd Deshane
> http://www.linkedin.com/in/deshantm
> http://www.xen.org/products/cloudxen.html
> http://runningxen.com/
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