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Re: [Xen-devel] Hanging save/restore with domU

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Hanging save/restore with domU
From: Major Hayden <major@xxxxxxxx>
Date: Tue, 8 Dec 2009 17:31:16 -0600
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Hey Jeremy,

Thanks for the reply.  I checked out the tag from your git repo, 
built it, and I'm running into the same hanging suspend issue on Xen 3.0.3 and 
3.1.2.  Xen 3.3 is able to save the VM without a problem (it could with the 
vanilla 2.6.31 tree as well).

Xen logs are still pretty quiet during the 'xm save':

DEBUG (__init__:1072) [xc_save]: /usr/lib64/xen/bin/xc_save 28 500 0 0 0
DEBUG (__init__:1072) suspend
DEBUG (__init__:1072) In saveInputHandler suspend
DEBUG (__init__:1072) Suspending 500 ...
DEBUG (__init__:1072) XendDomainInfo.shutdown(suspend)
DEBUG (__init__:1072) XendDomainInfo.handleShutdownWatch
DEBUG (__init__:1072) XendDomainInfo.handleShutdownWatch

Do you have a working .config you'd recommend to use as a failsafe?

-- Major

On Dec 8, 2009, at 3:54 PM, Jeremy Fitzhardinge wrote:

> On 12/08/09 13:43, Major Hayden wrote:
>> I have a peculiar issue with xm save / xm restore when using vanilla 
>> kernel from kernel.org in a domU on a server running Xen 3.1.2-rc1.
> There are a number of bugs with save/restore in vanilla Linux at the moment.  
> I've submitted fixes for them, but I don't think they've been picked up yet.  
> In the mean time, I recommend using the xen.git kernel.
>    J

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