[Xen-users] Best way to get Xen into Ubuntu Natty/64bit

[Florian Heigl <florian.heigl@xxxxxxxxx>]

Hi,

I had tried to run Xen on one system using the packages from a Xen
PPA, that seemed to have anything I wanted.
It came with Xen 4.1.2, so I added it, but I need something more
"finished" and "working"

When testing I found so many issues that I'm now uninstalling all of this again:
ii  libxen-dev                      4.1.2~final-2ubuntu7
     Public headers and libs for Xen
ii  libxenstore3.0                  4.1.2~final-2ubuntu7
     Xenstore communications library for Xen
ii  xen-docs-4.1                    4.1.2~final-2ubuntu7
     Documentation for Xen
ii  xen-hypervisor-4.1-amd64        4.1.2~final-2ubuntu7
     Xen Hypervisor on AMD64
ii  xen-utils-4.1                   4.1.2~final-2ubuntu7
     XEN administrative tools
ii  xen-utils-common                4.1.0~rc6-1ubuntu1
     XEN administrative tools - common files
ii  xenstore-utils                  4.1.2~final-2ubuntu7
     Xenstore utilities for Xen

It didn't even manage to make Xen the default boot option in the grub2 config :)
Bringing up VMs was also more of a luck thing.

What is the best choice if I want to be actually able to use the
following things:

- dom0_mem *must* work. It's totally idiotic if it doesnt work and i
sit there watching dom0 balloon on each new VM boot, plus the OOM
killer hit a few times during that. How a less than 1.4GB OS install
can run out of Ram whilst ballooning from 96GB to 16GB, I do not know.
>From what I understand this makes all early 3.0 kernels a bad choice
and definitely matches what I was seeing when I tried to set dom0
mem....
- Xen NUMA needs to work since it is a 2socket Opteron
- blktap2
- blkback
- tmem
- Ceph (this means a kernel where I can have very current btrfs and
ceph, most probably not the stock kernel anyway), but this can also
run inside a domU so this is not that important

I guess I'll be going with xen-testing right away and I can also
switch distros if anyone has a recommendation.
(Oracle VM 2.2, 3.0.1 and 3.0.2 unfortunately didn't work on the
system, otherwise I'd be running that instead of trying to run
something.

What are you using for Xen installs that are supposed to *work* on a
larger scale box?
Debian and a selfmade kernel?
RHEL + GitCo?

Alpine 2.2testing was the least of mess of all I tried but
- they're just adding Xen support, so it's not done yet
- only recognized 8 of 24 cpus.



-- 
the purpose of libvirt is to provide an abstraction layer hiding all
xen features added since 2006 until they were finally understood and
copied by the kvm devs.

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