Cannot Install a DomU

English Install/Boot/Login
1

I have just done a fresh install of 11.4, installed the Xen Kernel and then done a full update.

When I go into YaST and then to Create Vritual Machines I get the error:

Failed to start vm-install

Going into Virtual machine Manager and trying to connect to the hypervisor gives this error:

Unable to open a connection to the Xen hypervisor/daemon.

Verify that:

  • A Xen host kernel was booted
  • The Xen service has been started

unable to connect to ‘localhost:8000’: Connection refused

Traceback (most recent call last):
File “/usr/share/virt-manager/virtManager/connection.py”, line 983, in _try_open
None], flags)
File “/usr/lib64/python2.7/site-packages/libvirt.py”, line 107, in openAuth
if ret is None:raise libvirtError(‘virConnectOpenAuth() failed’)
libvirtError: unable to connect to ‘localhost:8000’: Connection refused

If I go into Software Management and re-install the xen kernel and reboot these errors go away but If I reboot again it reverts back. Any ideas?

2

I think comparing the output of this command between the state when it’s working and not working would be a good start for troubleshooting :

uname -a

Maybe reinstalling the packages changes the default boot kernel ? and then for some reason it changes again ?

This are just guesses of course :slight_smile:

Best regards,
Greg

3

I’ll double check it when I’m near the box again later, but I did confirm via uname -a each time I was booted into the correct kernel which really stumped me.

4

Then I’ve got no idea what might be wrong. I’ve got some experience but only with XenServer by Citrix and have never run into such problems.
I admit I never tried to install Xen on openSUSE :slight_smile:

Best regards,
Greg

5

I did do a considerable Google search before posting here and for most it was down to mismatching xen and xen-tools versions which isn’t my problem. I’ll try it again and failing that I’ll just re-install.

6

Still got the problem, even did a re-install to check.

kaon:/home/danny # uname -a
Linux kaon.cybertron.local 2.6.37.6-0.7-xen #1 SMP 2011-07-21 02:17:24 +0200 x86_64 x86_64 x86_64 GNU/Linux
kaon:/home/danny # ps -ef | grep xen
root 15 2 0 19:54 ? 00:00:00 [xenwatch]
root 16 2 0 19:54 ? 00:00:00 [xenbus]
root 1735 1 0 19:55 ? 00:00:00 xenstored
root 1742 1 0 19:55 ? 00:00:00 xenconsoled --pid-file=/var/run/xenconsoled.pid
root 2017 1 0 19:55 ? 00:00:00 /usr/bin/python /usr/sbin/xend start
root 2019 2017 0 19:55 ? 00:00:00 /usr/bin/python /usr/sbin/xend start
root 2975 2956 0 20:00 pts/1 00:00:00 grep xen

7

Maybe You are affected by this bug ? Did You read this bug report already ?
[Bug 685064] New: XEN: Kernel image does not exist: /tmp/kernel.xxxx whe](http://lists.opensuse.org/archive/opensuse-bugs/2011-04/msg00911.html)

Best regards,
Greg

8

Doesn’t look like the same thing. That bug seems to refer to a none booting domU and I can’t even get that far.

9

Fixed by someone over at Unix Stackexchange: virtual machine - Xen on openSUSE 11.4 - Unix and Linux - Stack Exchange.

Simply run:

chkconfig xencommons off

then reboot.

10

Thanks a lot for the feedback :slight_smile:

Hope this will help others as well.

Best regards,
Greg

11

The problem is that Virtual Manager isn’t able to ask for the password.

I am having the same issue.

But I found this on Red Hat forum that might be useful.

https://bugzilla.redhat.com/show_bug.cgi?id=579579

I am able to connect, but only if I do a virt-manager --ssh from the cli, type in my password. I never get a pop up window from the gui.

Pup