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xen-devel
Re: [Xen-devel] More Xen troubles (with xend this time)
>
> >>I did restore the domain, then noticed it was crashed ("-----c" in xm
> >>list). I tried to destroy it, but it didn't work. So I stopped xend,
> >>restarted it ... And there it goes :
> >>
> >>
> >
> >Restarting xend was a bit of a brave move. Although its intended
> >to be restartable, there are definitely bugs in the restart code,
> >particularly if you have domains in unusual states at the time
>
> Okay, and once we "lost" xend, there is no way to do anything ? (create,
> destroy, shutdown, get a console...)
If you can't restart it, your stuffed.
> >As to why the domain wouldn't be destroyed, that may turn out to
> >be a useful clue as to the resume problem at its root. If we
> >could get a crashdump from a known kernel image I'm sure we can
> >fix this pretty easily.
> >
> I will do my best to reboot the box and try to reproduce the problem.
> But if the restore operation crashes xend, I will never be able to get a
> crash dump - unless there's another way to get the information ?
Put '-c' on the restore command line to connect to the console.
> If I don't use save/restore/migrate, can I expect Xen to be
> stable ?
It's stable for most people even using save/restore/migrate. It
must be something about your particular setup or configuration
which is provoking the bug. We've actually put a fair amount of
effort into trying to reproduce the resume crash, but haven't
managed it.
> Or are there other features that are deemed to cause problems ?
The list of known bugs is currently remarkably short, and mostly
related to certain hardware (drivers or ioapics).
Ian
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