Xen in fedora 10
 

I `ve installed fedora 10, so i need xen to work, but xen doesn `t work. I installed with these steps :

1) yum install xen
2) yum install kernel-xen
3) yum install virt-manager

I have no errors in the installation. BUT WHE I REBOOT AND I RUN XEND I `VE GOT THE MESSAGE:

[root@Tirnanog sebastian]# xend
ERROR Internal error: Could not obtain handle on privileged command interface (2 = No such file or directory)
Traceback (most recent call last):
File "/usr/sbin/xend", line 16, in <module>
from xen.xend.server import SrvDaemon
File "/usr/lib/python2.5/site-packages/xen/xend/server/SrvDaemon.py", line 26, in <module>
import relocate
File "/usr/lib/python2.5/site-packages/xen/xend/server/relocate.py", line 28, in <module>
from xen.xend import XendDomain
File "/usr/lib/python2.5/site-packages/xen/xend/XendDomain.py", line 35, in <module>
from xen.xend import XendOptions, XendCheckpoint, XendDomainInfo
File "/usr/lib/python2.5/site-packages/xen/xend/XendCheckpoint.py", line 20, in <module>
from xen.xend import balloon, sxp, image
File "/usr/lib/python2.5/site-packages/xen/xend/image.py", line 44, in <module>
xc = xen.lowlevel.xc.xc()
xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle on privileged command interface (2 = No such file or directory)')


Please any help will be useful, i don `t know what to do !

Piukeman !

Have you booted to the xen kernel?

I think you could try

yum groupinstall Virtualization

to make sure it has everything it needs if Simon's idea doesn't sort it.

I did it all
 

Hi, and thanks to everyone, i did it all... i booted the right kernel, and i have installed all the packages. I don `t know what to do !i need xen in fedora, all the tutoruials are really simple. I did the correct installation, everything is installed. Then i booted the vmlinuz-2.6.27.7-134.fc10.i686.PAE kernel (xen kernel) but the when i run xend, I `ve this message error:

[root@Tirnanog sebastian]# xend
ERROR Internal error: Could not obtain handle on privileged command interface (2 = No such file or directory)
Traceback (most recent call last):
File "/usr/sbin/xend", line 16, in <module>
from xen.xend.server import SrvDaemon
File "/usr/lib/python2.5/site-packages/xen/xend/server/SrvDaemon.py", line 26, in <module>
import relocate
File "/usr/lib/python2.5/site-packages/xen/xend/server/relocate.py", line 28, in <module>
from xen.xend import XendDomain
File "/usr/lib/python2.5/site-packages/xen/xend/XendDomain.py", line 35, in <module>
from xen.xend import XendOptions, XendCheckpoint, XendDomainInfo
File "/usr/lib/python2.5/site-packages/xen/xend/XendCheckpoint.py", line 20, in <module>
from xen.xend import balloon, sxp, image
File "/usr/lib/python2.5/site-packages/xen/xend/image.py", line 44, in <module>
xc = xen.lowlevel.xc.xc()
xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle on privileged command interface (2 = No such file or directory)')
[root@Tirnanog sebastian]#

Thanks in advanced to all of you !

I don't have a xen kernel loaded, but doing yum list "*kernel*" on CentOS (and the naming is pretty much the same), I see

kernel-xen.x86_64 2.6.18-92.1.22.el5

which is more like what I'd expect (PAE is a large memory module kernel).

Check you're loading the right one (show us "ls /boot")

What makes you think that this is the xen kernel? Usually they have "xen" in there name.

How did you check that you have all the needed packages?This error is telling you that you do not have everything you need.

What happens when you enter:

su -c "yum groupinstall 'Virtualization'"

over 5000 post 10 thank you's you needed this one and it is a good one.

There is a bug issue with using Zen in Fedora 10.

Snip:

Fedora 10 i686 Xen guest won't boot
link to this item - Bugzilla: 470905
Fedora 10 (i686) must use the kernel-PAE package to run as a Xen guest. The installer fails to choose this kernel when it is being installed under Xen, so the installed system will not boot.
As a workaround, you can use a kickstart file to install kernel-PAE. An updates.img file that fixes this problem should be made available soon.
Error upgrading systems with kernel-xen installed
link to this item - Bugzilla: 472462
If you try to upgrade a system with image:Echo-package-16px.pngkernel-xen installed, anaconda will fail with an error message ending

That's as a guest though, you still need the xen kernel as Dom0

There is no kernel-zen kernel in Fedora 10 if I understand correctly the info put out by the fedora project folks. It said to use the Kernel-PAE and intall zenner as the managing application. Its late at night so I could be miss-informed.

Al

I promise, my last comment for tonight:

Previous versions of fedora had a distinct kernel image for Xen domains. This is no longer the case for Fedora 10. The version of image:Echo-package-16px.pngpython-virtinst on Fedora 8 is not aware of this change.

A newer build of image:Echo-package-16px.pngpython-virtinst has been created in updates-testing. Try this test version and give it some positive karma if it works for you.

I'll fire up F10 later and check it out.

looks like you're spot on

Hmmm... perhaps we are out of date?
Fedora 10 doesn’t include Xen, KVM rules uncontested

http://www.virtualization.info/2008/...kvm-rules.html

It's different in F10. See this: http://fedoraproject.org/wiki/Features/XenPvopsDom0

Update: dom0 xen not yet implemented in F10 though. Hopefully F11 would have it.