From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: guest suspend/resume & virtio: vring errors Date: Sat, 9 Jul 2011 12:17:20 +0300 Message-ID: <20110709091720.GG10249@redhat.com> References: <4E17545E.7010400@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: KVM list To: Michael Tokarev Return-path: Received: from mx1.redhat.com ([209.132.183.28]:54329 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751615Ab1GIJRi (ORCPT ); Sat, 9 Jul 2011 05:17:38 -0400 Content-Disposition: inline In-Reply-To: <4E17545E.7010400@msgid.tls.msk.ru> Sender: kvm-owner@vger.kernel.org List-ID: On Fri, Jul 08, 2011 at 11:02:54PM +0400, Michael Tokarev wrote: > I tried suspend/resume cycle for a linux guest > today, with 100% failure result. There are 2 Good. It works as expect :) Linux virtio drivers do not support PM. > With e1000 instead of virtio-net-pci, the suspend > does not complete - guest kernel freezes after the > message "Suspending console(s)" and does not respond > (but does not eat 100% CPU either) - the same as for > older guest kernel. > > Has anyone succeeded suspend/resume cycle? > Yes, but Linux and suspend/resume are not best friends. Sometimes it works by mistake, but next merged patch fixes it and suspend/resume returns to its normal broken state. -- Gleb.