From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zach Carter Subject: Re: qemu-kvm 0.12.4 hanging forever Date: Fri, 2 Jul 2010 10:28:31 -0700 Message-ID: <201007021028.32097.z.carter@f5.com> References: <201007011537.30083.z.carter@f5.com> <201007011802.27102.iggy@theiggy.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: "kvm@vger.kernel.org" To: Brian Jackson Return-path: Received: from lists.f5.com ([65.197.145.96]:47237 "EHLO mail.f5.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756352Ab0GBR2d (ORCPT ); Fri, 2 Jul 2010 13:28:33 -0400 In-Reply-To: <201007011802.27102.iggy@theiggy.com> Sender: kvm-owner@vger.kernel.org List-ID: On Thursday 01 July 2010 16:02:26 Brian Jackson wrote: > > Here are some more interesting details. The 64 bit host, kernel, and kvm > > kernel module are all vanilla CentOS 5.4. If I use the kmod- > > kvm-83-105.el5_4.9 version of the kernel module, it works fine. Yum > > update to anything past that and the hang occurs 100% of the > > time. Update all the way to the very latest CentOS 5.5 packages, and I > > still get the hang. Downgrade just the kvm kernel modules and it starts > > working again. > > That's pretty well known. Use a newer kernel with a newer qemu-kvm, or use > the packages that come with CentOS. I looked though mail lists and searched with google for quite a while and didn't anything that sounded the same. Is there a bug reference or some other search term I could use to find others discussing this issue? > > I'm sure I could use the qemu-kvm that ships from CentOS with the > > corresponding kernel module, however that lacks certain essential > > features, including support for scsi disk drive emulation. > > There's a reason Redhat disables scsi support in their kvm... it's not > really suggested to use it. What specific reason is that? The kvm.spec %changelog references RedHat bugzilla 512837, however I am not authorized to access it. scsi is a hard requirement for us, even if we have to stay on the old kernel module. Any additional insight would be much appreciated. thanks, -Zach