I bet if you did some slicing of -head versions, you'll find an
earlier version that doesn't do that. :-)



ADrian

On 20 November 2010 15:38, Colin Percival <cperc...@freebsd.org> wrote:
> On 11/19/10 10:30, Larry Maloney wrote:
>> Does your motherboard have a hardware watchdog timer?
>
> Not one which is accessible from within a DomU. :-)
>
> It seems that this bug is related somehow to the idle thread sleeping -- when
> I comment out the call to idle_block from cpu_idle_hlt in i386/machdep.c the
> stalling goes away.
>
>> On Fri, 2010-11-19 at 06:42 -0800, Colin Percival wrote:
>>> I'm seeing a weird bug here, and I'm wondering if anyone else has 
>>> experienced
>>> this and/or has any clue how to fix it.
>>>
>>> During the boot process, in the middle of running rc.d scripts, my 
>>> FreeBSD/Xen
>>> instance stalls.  It does nothing until I send a shutdown signal, at which 
>>> point
>>>> [XEN] hypervisor wallclock nudged; nudging TOD.
>>> and a couple buffered lines of rc.d script output are printed.  From there 
>>> the
>>> rc.shutdown script starts running, but it too stalls after a short time; 
>>> then I
>>> see
>>>> [XEN] hypervisor wallclock nudged; nudging TOD.
>>>> Nov 19 14:08:33 init: timeout expired for /bin/sh on /etc/rc.shutdown: 
>>>> Interrupted system call; going to single user mode
>>> printed, suggesting that the shutdown watchdog timer at least managed to 
>>> not get
>>> stuck even though everything else did.
>
> --
> Colin Percival
> Security Officer, FreeBSD | freebsd.org | The power to serve
> Founder / author, Tarsnap | tarsnap.com | Online backups for the truly 
> paranoid
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