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Re: [Xen-devel] Re: Hot plug scripts not working c/s 19355 (was: Re: [PA

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: Hot plug scripts not working c/s 19355 (was: Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it)
From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date: Fri, 13 Mar 2009 11:15:24 -0700 (PDT)
Cc: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Fri, 13 Mar 2009 11:15:57 -0700
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The most recent 2.6.29-rc7 under Xen (release19317) shows up
hotplug issue at the very first start up.
When i revers  back to rc7 built on 03/08/09 under same Xen,  hotplug issue
gets gone.
I gonna test Xen(19355) with Suse 2.6.27-5 kernel


--- On Fri, 3/13/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: [Xen-devel] Re: Hot plug scripts not working c/s 19355 (was: Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it)
To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>
Cc: "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx>, "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "bderzhavets@xxxxxxxxx" <bderzhavets@xxxxxxxxx>
Date: Friday, March 13, 2009, 1:09 PM

Keir Fraser wrote:
> On 13/03/2009 15:46, "Dan Magenheimer"
<dan.magenheimer@xxxxxxxxxx> wrote:
>> A heads-up that I just got a "(tap)...Hotplug scripts not
>> completely unrelated to pvops.
>> I updated hypervisor and tools (but notably NOT dom0 kernel) to
>> xen-unstable c/s 19355. Launching a domain now fails with the
>> above error. Rolling tools (only) back to 19187 makes the
>> problem go away.
>> Is there maybe a new dependency between tools and dom0 kernel?
> You could try reverting changeset 19342, as most likely culprit.

Is that the fixed xen-hotplug-cleanup change? The symptoms aren't quite
the same; with the broken cleanup, there were lockfiles left lying about, so all
the "block add" scripts were blocked waiting for the lock to be
released. In this case, everything is just sitting there; the hotplug never
seems to get started.


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