Xen on Ubuntu: DomU hangs on boot
allen.fowler at yahoo.com
Fri Nov 30 17:04:26 UTC 2007
> I've heard rumors that a DomU might hang when trying
> to access the
> hwclock. Try disabling the relevant start scrips /
> udev rules in the DomU.
I just checked a DomU (with new disk image) that I
left "hung" pegging the CPU at 99% for 6+ hours.
Guess what? It finally booted, and "top" shows a
process 'hwclock' using all the CPU.
I was able to kill the process and the DomU CPU usage
fell to expected levels.
How do I disable the "hwclock" at boot up, and is it
safe to do so?
What does "hwclock" do?
I am not at all familiar with the way Unix/Linux
handles the boot and startup process.
> BTW: it would be nice if you could stop top posting.
> And it would be
> even nicer if you could get a mail client that
> doesn't break threading.
Sorry about that.. How is the treading now?
I had switched to the new Yahoo Mail interface that
seems to not allow (?) in-line quoting.
p.s. I am going to also post this to the ubuntu-server
list, as it would seem relevant for those users, too.
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