Questions[dom0](server)

I am looking at deploying IPv6 to my virtual machines. Right now I have v6 working great on the dom0 using a 6in4 provided by Hurricane Electric as I do not have native v6.

However, I would like to distribute some of the /48 I am receiving to the domUs (/64 per machine would be ideal, but I am open to your suggestions). Static configuration on the domU side is fine.

All I want to accomplish is getting the traffic to pass through the dom0 to the domU. To say the least, I'm still trying to wrap my head around all the virtual interfaces and bridges Xen creates.

Yes, I have Googled around for this a bit and have not found anything great. I tried using two "vif-route6" bash scripts with no luck (possibly due to my ignorance with Xen networking).

I am still stuck (mainly in how to configure the dom0). I would like to imagine this problem is relatively easy to solve and I look forward to your suggestions and help!

Edited post to clarify my end goal: getting IPv6 to domU guests. I am completely open to suggestions but am hoping for something other than setting up a tunnel for every guest.

Problem using blktap with xen-4.1 running Ubuntu Precise stock kernel with dom0 xen-4.1.

I get:

[    5.580106] XENBUS: Waiting for devices to initialise: 295s...290s.
...
[  300.580288] XENBUS: Timeout connecting to device: device/vbd/51713 (local state 3, remote state 1)

And some syslog lines:

May 17 13:07:30 localhost logger: /etc/xen/scripts/blktap: add XENBUS_PATH=backend/tap/10/51713
May 17 13:07:31 localhost logger: /etc/xen/scripts/blktap: Writing backend/tap/10/51713/hotplug-status connected to xenstore.

with tap:aio: disk lines. file:/ works.

disk = [
    'tap:aio:/data/root.img,xvda1,w',
]

Problem exists with lucid and precises domU kernels and both guests work in Ubuntu hardy dom0 Host 64bit 2.6.24-28-xen xen-3.3

 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Distributor ID: Ubuntu
Description:    Ubuntu 12.04 LTS
Release:        12.04
Codename:       precise

I used the No Starch Press "Book of Xen" as a starting point to learn more about Xen and begin a dom0 installation as described therein. Through failed installations and subsequent searches I learned that Red Hat / CentOS no longer supports Xen in favor of KVM. After playing with OpenSUSE I'm running into silliness there too - so -

Rather than continuing to pull out my hair I thought I'd do what I should have done to begin and ask for recommendations on the lightest weight and simplest installation for a Xen Dom0 installation - based on current kernels...

Suggestions?

BTW - My intention is to run Win2k8 and RHE for DomU.

Just had an (in my sense) obscure situation.

I have a Xen Server with bridged networking. Everything works fine since month. A while ago i configuresd a second bridge. only some DomUs get an channel on this bridge - my Dom0 doesn't need to / should'nt use this bridge. So just 5 minutes ago while rebooting the xen host (because of an other problem with the UPS) i decided to removed the fixed ip from the the interface of the Dom0 which belongs to the second bridge. So after reboot i noticed that none of the interfaces on the second bridge is available. I couldn't find a problem. Everything was just like before the reboot, except the interface of the Dom0 had no IP address.

After a while i tried to give the DomO interface of this bridge an IP again and ... BOOM ... everything is up and running again!

WTF? Why is it important to have the interface of a bridge configured in the Dom0? Even when confiugured 'wrong' (complitely different netowkr settings as the network really hanging on the bridge) everythjing works fine ... I don't get it. Could please someone explain?

Tnaks a lot!

I'd like to compile a recent Linux kernel (2.6.34) for my Ubuntu 10.04 Lucid Lynx AMD64 box, mainly because I'd like to use it as a dom0 kernel with the recent xen4. There's plenty documentation on the web about how to compile a kernel 'Debian style'. But what I think would be nice to start with an 'official' Ubuntu config to be sure not to miss any important things and having to recompile over and over again.

So what I'd like to do is compile 2.6.34, but starting with the 'official' /boot/config-2.6.32-XX from Ubuntu Lucid. The question is: How do I best do that? If I just take the config from 2.6.32, the new features from 2.6.33/34 won't be in the config. So what I'd like to do is somehow the 2.6.34 config with the original 2.6.32 one from Ubuntu. How can I best do that? Does it even make sense? Is there easier ways to achieve what I want?

Thanks for your insight!

A.

PS: I just found a linux-image-2.6.32-bpo.4-xen-amd64 package on backports.org, but no information about it. Would it work as a dom0 kernel on Lucid?