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Re: [Xen-devel] xm save / restore with xen-unstable not working ?

I also forgot to start the xfrd daemon, it's also necessary if one only want's
to save but not migrate a domain.
I haven't seen this in the docu, only realized it by digging through the xend,
xm and xfrd sources.
Now the error points more to the "small interface change" Ian has mentioned:
"Invalid state record -- pfn count out of range: <big number goes here...>"
I am quite interested in testing the save/migrate feature. If it's really only
a small interface change, can you shortly point me to the places / files
of the source where I should look in order to correct it, or does
it need very deep knowledge of xen internals ?


*********** REPLY SEPARATOR  ***********

On 29.07.2004 at 15:06 Tom Wilkie wrote:

>The simplest way to achieve this is to alter the XendClient.py file.
>In  this file is the class that xm used to communicate with xend.  If
>you change this, it would also change the sv web interface, which would
>(perhaps) be useful too, so you can manage multiple nodes form one
>On 29 Jul 2004, at 14:56, Ian Pratt wrote:
>>> However when I try "xm save" on a domain this always
>>> generates an error message on the screen like
>>> "...connection refused on the other side...111:connection
>>> refused..." and does not work.
>>> Xend is running in Dom0 at this time and all other xm commands
>>> work fine at the same time.
>>> Is xm save / restore broken or disabled with xen-unstable ?
>> Yep -- there was a small interface change that broke
>> save/restore/migrate, and I promised to fix it, but I just
>> haven't had a chance with OLS and admin etc.
>> I'll work on it over the weekend, if not before.
>>> Also I could not find a possibility to tell the xm tool
>>> on which port xend is listening. So when I change the
>>> port Xend is listening on in the xend-config file, no
>>> xm command works any more. Where can I configure the
>>> port the xm tool is trying to contact the xend daemon ?
>> At one point, we talked about xm having a "-U" option where a URL
>> was used to specify the xend to talk to. I don't think it's there
>> in the current version, but it should be trivial to add. You'd
>> then be able to control and query multiple xen nodes from a
>> single host. Anyone want to have a go to add this?
>> Cheers,
>> Ian
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