From: Keir Fraser <keir.xen@gmail.com>
To: Laszlo Ersek <lersek@redhat.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: domain pause vs. watchdog timer
Date: Thu, 13 Oct 2011 15:39:59 +0100 [thread overview]
Message-ID: <CABCB6CF.22C4C%keir.xen@gmail.com> (raw)
In-Reply-To: <4E96EA7F.5050309@redhat.com>
On 13/10/2011 14:41, "Laszlo Ersek" <lersek@redhat.com> wrote:
> Hi,
>
> if a domain is paused (= not scheduled), its process that keeps
> otherwise kicking /dev/watchdog and (thusly the hypervisor) "freezes"
> too. Should pausing a domain suspend (or "inactivate") its watchdog_timers?
>
> (I believe this must have been considered and the answer is "you
> shouldn't do that", but a confirmation/refutation would be nice.)
Yes, the ability to pause a domain from the toolstack command line was added
way back in the beginning largely because... Well, because it could be done,
and it was easy! It's not actually a very good idea. You won't actually find
the toolstack itself automatically pausing a domain in very many places at
all -- most places where it does are debug/diagnostic code, or where a
domain is about to be destroyed anyway.
So, yes, in short: don't do that! :-)
-- Keir
> Thanks
> L.
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
prev parent reply other threads:[~2011-10-13 14:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-13 13:41 domain pause vs. watchdog timer Laszlo Ersek
2011-10-13 14:21 ` Jan Beulich
2011-10-13 14:38 ` Laszlo Ersek
2011-10-13 14:56 ` Keir Fraser
2011-10-13 17:11 ` Laszlo Ersek
2011-10-13 14:39 ` Keir Fraser [this message]
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