- Devel - libvirt List Archives

[Libvir] Persistent Configurations?
by Anthony Liguori 11 Jan '06

11 Jan '06

Howdy, Thought I'd try to start up a discussion on a topic that I know I've discussed a lot with people in the past. Xend currently stores its configurations in python files somewhere on the file system (usually in /etc/xen). This is problematic from a management tool perspective because the python files may contain arbitrary python code (requiring a python interpreter to read) and there's no central location which makes enumerating possible domains quite difficult. If you think about a typical use-case (or at least, my typical use-case :-)), a user is likely to have a larger number of domains than what are running (say a domain for a bunch of different distros for testing). It would be nice if any management tools could see those domains and easily start them up. I think we could achieve this with the following requirements: 1) Allow domain creation based on an opaque configuration object 2) Allow storing and retrieval of these configuration objects from the XenStore (using a user-specified path) I think this isolates the state well enough that it leaves the majority of the library stateless. Just some random thoughts... Regards, Anthony Liguori

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[Libvir] ruby bindings
by Fraser Campbell 05 Jan '06

05 Jan '06

Hi, Is there any chance you are considering the addition of ruby bindings for libvir? I have been considering writing my own ruby wrappers around Xen's lowlevel libraries but if libvir is a higher-level more stable API perhaps it would make more sense for me to wrap around libvir. If you are not working on ruby bindings I will do so myself and eventually provide patches. Are you in a position to state yet whether libvir is likely to be continually developed and a key part of the Fedora/RHEL virtualization? I immediately see some missing functionality (migration), I assume the eventual goal is to support all features of Xen and that it is just missing because of the very young state of the project? Thanks!

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[Libvir] Release of libvir-0.0.1
by Daniel Veillard 20 Dec '05

20 Dec '05

First release based on today's CVS snapshot is available for download from http://libvir.org/downloads.html I just added python bindings before the release, unfortunately I noticed only after that the destructor for the virDomain and virConnect classes were broken <grin/>. Well it is definitely a Work in Progress and sticking with CVS might be a good idea at the moment. Daniel -- Daniel Veillard | Red Hat http://redhat.com/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/

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[Libvir] Re: [Fedora-xen] Libvir: a simple C virtualization control library
by Daniel Veillard 15 Dec '05

15 Dec '05

On Thu, Dec 15, 2005 at 10:19:17AM -0500, Bryan D. Payne wrote: > Interesting. Can you expand on how this is different than the > services currently provided by libxc? Is the idea to simply have a > wrapper around libxc that can be LGPL and, possibly, be extended to > work with other virtualization mechanisms? Or does libvir provide > services not found in libxc? It is not using libxc for a couple of reasons: - to decouple the API from Xen, with the hope it will help provide API stability with an intermediate abstraction - due to the licence: if the LGPL library requires to link with a GPL library well the resulting programs can only be used under the GPL licence. It is smaller than libxc in term of capabilities, the goal is not to try to match those exactly, it can be expanded if there is demand though but it's more about providing generic services. For example there is an API do dump running domain informations as an XML chunk that could be used as well for different kind of virtualization engine, and is more high level than what libxc provides. Daniel -- Daniel Veillard | Red Hat http://redhat.com/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/

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[Libvir] test
by Daniel Veillard 07 Dec '05

07 Dec '05

test of the list and archives, Daniel -- Daniel Veillard | Red Hat http://redhat.com/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/

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