From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [ANNOUNCE] kvm-kmod-2.6.32.2 Date: Fri, 25 Dec 2009 16:16:01 +0200 Message-ID: <4B34C921.7000902@redhat.com> References: <4B3354F0.40609@web.de> <20091224191001.GC7104@defiant.freesoftware> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: dbareiro@gmx.net, kvm Return-path: Received: from mx1.redhat.com ([209.132.183.28]:22805 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753713AbZLYOQK (ORCPT ); Fri, 25 Dec 2009 09:16:10 -0500 In-Reply-To: <20091224191001.GC7104@defiant.freesoftware> Sender: kvm-owner@vger.kernel.org List-ID: On 12/24/2009 09:10 PM, Daniel Bareiro wrote: > > Can this version of kvm-kmod be used with any version of Linux kernel? > Not any version, but most. > I have Linux 2.6.32 in a host, but I suppose that considering, by the > date of publication of kvm-kmod, that the provided modules by this > package are newer and fix several bugs of the provided modules by Linux > 2.6.32. > kvm-kmod-2.6.32.2 contains the kvm modules from Linux 2.6.32.2. You're better off installing Linux 2.6.32.2 instead of kvm-kmod-2.6.32.2 on top of Linux 2.6.32 (since you get non-kvm fixes as well). > Also I have another host with Linux 2.6.30 and KVM-88, both compiled by > myself in that order. Then I didn't know that the userspace and the > kernel modules could be updated in independent form with qemu-kvm and > kvm-kmod, respectively; so I suppose that when installing KVM-88 in > second instance, it will have overwritten the newest modules of Linux > 2.6.30. Is it correct? In this case, can have some problem installing > kvm-kmod 2.6.32.2 with Linux 2.6.30? > It should work without problems. > Today I had a problem with one of the VMs running under this environment > of kvm-88 + Linux 2.6.30 (with modules of kvm-88, if what I said before > is correct). This is a VM that runs a Java application server with high > rate of I/O. > > The server didn't respond reason according to it showed Nagios. When I > acceded to host through the shell, it drew attention to me to see that > uptime reflected about 14697 days! When trying to execute "top", the > console was hung and I did not have another alternative that to do kill > -9 of the process. This could have due to some bug of that version of > KVM? > Looks like time drift. You should upgrade to more recent versions and report. > Perhaps it is an obvious question, but during the update process of the > modules, the virtual machines must be down? > You cannot rmmod the kvm modules while virtual machines are running. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.