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[Xen-devel] Re: XenParavirtOps wiki page updates

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Ferenc Wagner <wferi@xxxxxxx>
  • Date: Mon, 15 Dec 2008 12:55:38 +0100
  • Delivery-date: Mon, 15 Dec 2008 03:56:03 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

"Todd Deshane" <deshantm@xxxxxxxxx> writes:

> I've updated the wiki to reflect some more of the steps and
> workarounds that are currently needed.
> Please add your comments/updates/corrections:
> http://wiki.xensource.com/xenwiki/XenParavirtOps

Thanks for collecting this very useful bunch of information!
Here is what I still miss:

 * Features in 2.6.26:
     Balloon (contraction only)

   It isn't clear whether this contraction is reversible or not.

 * If the domain crashes very early, before any output appears on the
   console, then booting with: should provide some useful information.

   Booting with what?

 * How to achieve time sync between the dom0 and the domUs?  Lots of
   people seem to have problem with domU clock drift, me included.
   Ntp doesn't work in domU, and apparently no clocksource guarantees
   such synchronization.

 * I couldn't find it documented anywhere that SysRq is available via
   Ctrl+O on the domU and more importantly on the dom0 serial console.

 * The idle count doubling I still experience happens with pvops
   guests only (http://lkml.org/lkml/2008/9/18/276).

Otherwise, Debian's pvops guest kernel works very good for me, already
in production.

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