[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [Bug 1759] Xen 4.0.1 live migration/restore over-writes new hypervisor's boot-time record


  • To: Tim M <bugs@xxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.xen@xxxxxxxxx>
  • Date: Wed, 13 Apr 2011 21:00:42 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 13 Apr 2011 13:01:51 -0700
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=user-agent:date:subject:from:to:cc:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=RmiUmZij5YgyfNRTVwGxi1LHrAbLgn1hx3gMOJjdBSGWIUpfmM3VLhn/SXatXzb83a GP0N5l9IbfMjfXKbm2R1iZasCYx9JMuCZVYJYXMyIqgMBFBhtBlFhq8ZOlkf5jdA2tyu wSMVwWW/cCWfJT48pbAMiSceFHN/r0YzHPh9w=
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acv6FXe4zAKKqZejXkyUUbPE1lE8+Q==
  • Thread-topic: [Xen-devel] [Bug 1759] Xen 4.0.1 live migration/restore over-writes new hypervisor's boot-time record

On 13/04/2011 20:31, "Tim M" <bugs@xxxxxxxxxxxxxx> wrote:

> Next I initiated a live migration and this is what the output of the command
> looks like (with commentary added):
> 
> Wed Apr 13 12:07:48 PDT 2011
> Wed Apr 13 12:07:53 PDT 2011
> Wed Apr 13 12:07:58 PDT 2011
> Wed Apr 13 12:08:03 PDT 2011  [ migration happens here and SSH to the guest
> "freezes" for about 6 min ]
> Wed Apr 13 12:13:55 PDT 2011
> Wed Apr 13 12:14:00 PDT 2011
> Wed Apr 13 12:14:05 PDT 2011

Looks like the wallclock is correct after the migration however, and it's
that that the patch you referred to was fixing.

> I have only tried Ubuntu 10.04.2 guests running the 2.6.32 and 2.6.35 server
> kernel packages but, as mentioned, this happens every time.

I think this is a domU kernel bug, see a similar report here for example:
http://lists.xensource.com/archives/html/xen-devel/2010-10/msg00057.html
So it could be a common symptom in a range of Debian/Ubuntu kernels.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.