12:39 a.m.
Hi,
I'm running libvirt from CVS. I'm unable to get xmldump to work:
o virsh dumpxml <domain-id> doesn't work. Neither does <domain-name>
instead of domain-id. (Aside: the documentation at
http://libvirt.org/format.html needs fixing -- virsh reports a dumpxml
command, but no xmldump command)
o I can't get an XML dump from the Python bindings either.
Looking at the code, it seems the XML description is built using the
sexpr output from xend. On my machine, "xm list -l <domain-id>" prints
out the correct sexpr, so it seems Xend is working fine.
Am I missing something?
Thanks,
Diwaker
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3:37 a.m.
On Thu, Feb 23, 2006 at 10:39:41PM -0800, Diwaker Gupta wrote:
Hi,
I'm running libvirt from CVS. I'm unable to get xmldump to work:
o virsh dumpxml <domain-id> doesn't work. Neither does <domain-name>
instead of domain-id. (Aside: the documentation at
http://libvirt.org/format.html needs fixing -- virsh reports a dumpxml
command, but no xmldump command)
o I can't get an XML dump from the Python bindings either.
Looking at the code, it seems the XML description is built using the
sexpr output from xend. On my machine, "xm list -l <domain-id>" prints
out the correct sexpr, so it seems Xend is working fine.
Are you running a recent version of xen ? My guess is that you don't
have http enabled in /etc/xen/xend-config.sxp
localhost:~/libvirt/src -> grep http /etc/xen/xend-config.sxp
# utilizes a bridged network configuration. Access to xend via http
(xend-http-server yes)
# Port xend should use for the HTTP interface, if xend-http-server is set.
# Address xend should listen on for HTTP connections, if xend-http-server is
localhost:~/libvirt/src ->
Most of the operations are now carried though Xend HTTP interface.
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/
3:43 a.m.
Are you running a recent version of xen ? My guess is that you
don't
have http enabled in /etc/xen/xend-config.sxp
Yep, I track unstable. The HTTP server was off. Thanks, it works now!
You might want to add this to the documentation (if its already there,
I might have missed it).
Most of the operations are now carried though Xend HTTP interface.
Just out of curiosity, why is the HTTP server a requirement? From
xen-devel, it seems people are trying to move away from running a HTTP
server. Its possible to get all the information directly from xenstore
anyways right?
Also, since libvirt is going to track Xen development, I hope its safe
to assume that libvirt will move to XML-RPC when Xend does?
Diwaker
--
Web/Blog/Gallery: http://floatingsun.net/blog
3:59 a.m.
On Fri, Feb 24, 2006 at 01:43:23AM -0800, Diwaker Gupta wrote:
> Are you running a recent version of xen ? My guess is that you
don't
> have http enabled in /etc/xen/xend-config.sxp
Yep, I track unstable. The HTTP server was off. Thanks, it works now!
You might want to add this to the documentation (if its already there,
I might have missed it).
I checked, it's there in point #3 of the Installation part of the FAQ
http://libvirt.org/FAQ.html#Installati
> Most of the operations are now carried though Xend HTTP
interface.
Just out of curiosity, why is the HTTP server a requirement? From
xen-devel, it seems people are trying to move away from running a HTTP
server. Its possible to get all the information directly from xenstore
anyways right?
Well, the problem is if you're running as a user. If running as root
I think the connection to xend goes though a local socket not an IP
HTTP server, and should work even if the server is off. If you run as
an user accessing to the xen store need to tweak the permissions on the
read only socket anyway.
More generally most of the operation from libvirt are safer being
carried over the xend control I was told, if I access directly the hypervisor
(and this mandates root permissions on Dom 0) then I will confuse xend
internal state about the running domains. There is also some APIs like
Create/Save/Restore that can't be done easilly within libvirt even with
xen store access, and get close to trivial if you go though xend.
Basically at the moment Xend sits on the domain management, and it's
nearly unavoidable to go though it.
Also, since libvirt is going to track Xen development, I hope its
safe
to assume that libvirt will move to XML-RPC when Xend does?
Yes Anthony is leading this, as as far as I understand he already has
patches which could be added to libvirt once the upstream version of xend
will have XML-RPC included.
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/
12:43 p.m.
Diwaker Gupta wrote:
Also, since libvirt is going to track Xen development, I hope its
safe
to assume that libvirt will move to XML-RPC when Xend does?
Yes, I've been busy recently. The XML-RPC code is working with no
regressions. Once I submit to xen-devel, I'll send some patches to this
list adding XML-RPC support.
Regards,
Anthony Liguori
Diwaker
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12:41 p.m.
Daniel Veillard wrote:
On Thu, Feb 23, 2006 at 10:39:41PM -0800, Diwaker Gupta wrote:
> Hi,
>
> I'm running libvirt from CVS. I'm unable to get xmldump to work:
>
> o virsh dumpxml <domain-id> doesn't work. Neither does <domain-name>
> instead of domain-id. (Aside: the documentation at
> http://libvirt.org/format.html needs fixing -- virsh reports a dumpxml
> command, but no xmldump command)
>
> o I can't get an XML dump from the Python bindings either.
>
> Looking at the code, it seems the XML description is built using the
> sexpr output from xend. On my machine, "xm list -l <domain-id>"
prints
> out the correct sexpr, so it seems Xend is working fine.
>
Are you running a recent version of xen ? My guess is that you don't
have http enabled in /etc/xen/xend-config.sxp
The libxend code works with the domain socket as well. Perhaps we
should fall back to the domain socket if the host is "localhost" and the
HTTP server cannot be reached?
Regards,
Anthony Liguori
localhost:~/libvirt/src -> grep http /etc/xen/xend-config.sxp
# utilizes a bridged network configuration. Access to xend via http
(xend-http-server yes)
# Port xend should use for the HTTP interface, if xend-http-server is set.
# Address xend should listen on for HTTP connections, if xend-http-server is
localhost:~/libvirt/src ->
Most of the operations are now carried though Xend HTTP interface.
Daniel
2:05 p.m.
On Fri, Feb 24, 2006 at 12:41:41PM -0600, Anthony Liguori wrote:
> Are you running a recent version of xen ? My guess is that you
don't
>have http enabled in /etc/xen/xend-config.sxp
>
The libxend code works with the domain socket as well. Perhaps we
should fall back to the domain socket if the host is "localhost" and the
HTTP server cannot be reached?
yeah but it requires root access, I need to check the various combinations.
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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Diwaker Gupta