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Re: [Xen-devel] HVM restart issue

To: "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] HVM restart issue
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Thu, 12 Mar 2009 08:31:23 +0000
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On 12/03/2009 08:15, "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx> wrote:

> Recently I found HVM restart (destroy + start) is very slowly and the
> reason is the change to xen-hotplug-cleanup (see below).
> 
> When HVM is destroyed, backend vbd/vnif drivers will not be notified
> until /local/domain/hvm_id is removed in xenstore. udev event is then
> generated and xen-hotplug-cleanup is called. So the first xenstore-read
> will always fail and leave rest undone and xenstore unclean. Suggestion
> is to move it after backend/frontend removal.

I think 19250 has been causing problems for lots of people. I will revert it
until a better version is proposed.

 -- Keir



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