[one-users] OpenVZ

[Ruben S. Montero]

Hi,

First, thank you very much for your time and your efforts.  I totally agree
that using the vz commands would be a better approach, there is a special
driver format (XML) that pass to the driver the template in XML format. We
can use that in a ruby/python script to create the containers.....

BTW, we've just included OpenVZ as a project proposal for GSoC, I'll keep
you updated if a student apply for this project.

Cheers

Ruben


On Thu, Mar 10, 2011 at 6:33 PM, <knawnd at gmail.com> wrote:

> Hi!
>
> Spent some time in attempts to implement OpenVZ support in OpenNebula via
> libvirt I realized that for the moment probably it was not the most
> efficient way to do that since libvirt provides pretty poor OpenVZ support.
> In particular:
> 1) some of openvz specific parameters/options are missing from libvirt docs
> (e.g. [1]) despite of they are mentioned in "Example guest domain XML
> configuration" at libvirt openvz driver page [2] (I submitted a bug: [3] );
> 2) as far as I understand there is no way to specify assigned disk space
> and disk inodes by libvirt means (feature request: [4]);
> 3) it looks like network device veth is wrongly assigned inside openvz
> container (at least I couldn't find the proper way to do that: [5]) and
> there is no way to use another network device - venet (
> http://wiki.openvz.org/Venet).
> 4) total (max) and used (current) memory parameters for certain VM always
> have a zero value ([6]).
> Libvirt-users mail-list doesn't help too much to clarify details;
> Most of issues mentioned above as well as e.g. [7] had been discussed
> before in libvirt mail-list (some of them more than a year ago) but I
> couldn't find any submitted bugs and that and those issues still exist.
>
> For the moment I have done not so much progress in implementing openvz
> support in ONE via libvirt:
> $ git status
> # On branch one-openvz
> # Changes to be committed:
> #   (use "git reset HEAD <file>..." to unstage)
> #
> #       new file:   src/im_mad/remotes/ovz.d/architecture.sh
> #       new file:   src/im_mad/remotes/ovz.d/cpu.sh
> #       new file:   src/im_mad/remotes/ovz.d/name.sh
> #       new file:   src/im_mad/remotes/ovz.d/ovz.rb
> #       new file:   src/vmm/LibVirtDriverOVZ.cc
> #       new file:   src/vmm_mad/remotes/ovz/cancel
> #       new file:   src/vmm_mad/remotes/ovz/deploy
> #       new file:   src/vmm_mad/remotes/ovz/migrate
> #       new file:   src/vmm_mad/remotes/ovz/ovzrc
> #       new file:   src/vmm_mad/remotes/ovz/restore
> #       new file:   src/vmm_mad/remotes/ovz/save
> #       new file:   src/vmm_mad/remotes/ovz/shutdown
> #       new file:   src/vmm_mad/remotes/poll_vmm.rb
> #       deleted:    src/vmm_mad/remotes/poll_xen_kvm.rb
> #       new file:   src/vmm_mad/ssh/vmm_ssh_ovz.conf
> #
> # Changed but not updated:
> #   (use "git add <file>..." to update what will be committed)
> #
> #       modified:   include/LibVirtDriver.h
> #       modified:   install.sh
> #       modified:   share/etc/oned.conf
> #       modified:   src/vmm/LibVirtDriverOVZ.cc
> #       modified:   src/vmm/SConstruct
> #       modified:   src/vmm/VirtualMachineManager.cc
> #       modified:   src/vmm_mad/ssh/vmm_ssh_ovz.conf
>
> Taking all mentioned above into account I incline to an opinion it would be
> better to implement openvz support in OpenNebula by native openvz means like
> vzctl/vzlist/vzcalc/vzmigrate/vzdump commands just invoking those commands
> on remote host.
>
> I would like to know other opinions on that.
>
> Best regards,
> Nikolay.
>
> [1] http://libvirt.org/formatdomain.html
> [2] http://libvirt.org/drvopenvz.html
> [3] https://bugzilla.redhat.com/show_bug.cgi?id=683355
> [4] https://bugzilla.redhat.com/show_bug.cgi?id=683512
> [5] https://bugzilla.redhat.com/show_bug.cgi?id=683834
> [6] https://bugzilla.redhat.com/show_bug.cgi?id=683851
> [7] https://bugzilla.redhat.com/show_bug.cgi?id=683834
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>



-- 
Dr. Ruben Santiago Montero
Associate Professor (Profesor Titular), Complutense University of Madrid

URL: http://dsa-research.org/doku.php?id=people:ruben
Weblog: http://blog.dsa-research.org/?author=7
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