Hello Daniel. Am Mittwoch 27 Oktober 2010 18:05:50 schrieb Daniel P. Berrange:
for our project I need libvirts "managed save" functionality for Xen-3.4. In my implementation I tried to use Xens 'suspend' and 'resume', which would nicely match, but these two functions are not available throu the legacy streaming API (xend-http-server, xend-unix-server), which libvirt seems to still use. They are available throu the XML-RPC interface and the XenAPI interface, which libvirt doesn't seem to use.
There is a XenAPI driver in recent libvirt. Accessible with xenapi://hostname:port/
Thanks you for the hint, I'll take a look.
I'm not sure that 'suspend'/'resume' map to "managed save". suspend/resume are basically just pausing CPUs afaik, and this is already done in libvirt APIs. Managed save is about saving guest state in a standard location and automagically restoring from that upon guest boot.
Don't confuse libvirts naming with Xens naming: libvirt.suspend = xen.pause libvirt.resume = xen.unpause libvirt.managedsave = xen.suspend libvirt."managed start" = xen.resume
I also will need to look at snapshots next: Has someone already investigated adding snapshot support to Xen(-3.4)?
Not that I'm aware of
I'll give it a try when time permits. Sincerely Philipp Hahn -- Philipp Hahn Open Source Software Engineer hahn@univention.de Univention GmbH Linux for Your Business fon: +49 421 22 232- 0 Mary-Somerville-Str.1 28359 Bremen fax: +49 421 22 232-99 http://www.univention.de Besuchen Sie uns auf unseren nächsten Veranstaltungen: 26. - 28.10.: IT & Business 2010 in Stuttgart 27. - 28.10.: MODERNER STAAT 2010 in Berlin http://www.univention.de/univention/termine/veranstaltungstermin/