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1612 discussions

dvd not whitelisted ???
by ToddAndMargo 22 Dec '16

22 Dec '16

Hi All, Scientific Linux 7.2 I am drawing a blank on Google here. I am, trying to boot a qemu-kvm virtual machine off of /dev/sr0 (my DVD). But I get the following error Error starting domain: internal error: qemu unexpectedly closed the monitor: 2016-12-22T00:00:30.330333Z qemu-kvm: -drive file=/dev/sr0,format=raw,if=none,media=cdrom, id=drive-sata0-0-0,readonly=on: could not open disk image /dev/sr0: Driver 'host_cdrom' is not whitelisted "Not whitelisted" ???? What am I doing wrong? Many thanks, -T -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Computers are like air conditioners. They malfunction when you open windows ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Re: [CentOS-virt] Upstream libvirt releases for Virt-SIG
by Sandro Bonazzola 21 Dec '16

21 Dec '16

On Wed, Dec 14, 2016 at 4:35 AM, George Dunlap <George.Dunlap(a)citrix.com> wrote: > > > On Dec 6, 2016, at 4:18 PM, Sandro Bonazzola <sbonazzo(a)redhat.com> > wrote: > > > > > > > > On Fri, Dec 2, 2016 at 10:28 AM, Jiri Denemark <jdenemar(a)redhat.com> > wrote: > > Hi all, > > > > I talked to our oVirt developers who use CentOS for upstream > > development. And that's what makes their lives hard because it takes a > > long time before they can start using new features of libvirt. The > > latest released CentOS version is 7.2 with libvirt 1.2.17, which is > > pretty old. But even when CentOS 7.3 with libvirt 2.0.0 gets released, > > it will already be old since libvirt 2.5.0 is just about to be released > > upstream. > > > > So to help them, I'd like to start building upstream releases of libvirt > > for Virt-SIG. As one of the core libvirt developers and a maintainer of > > libvirt in RHEL I think I should be qualified enough to do so :-) The > > goal is to take every upstream release of libvirt soon after it's been > > released and rebase the current CentOS package on top of it. > > > > If it sounds good to you, what should I do to get started? > > > > Sounds good to me, welcome aboard! My only concern is that libvirt is > built also for xen so we need to ensure we don't break anything there. > > +1 for me to have Jiri added to Virt SIG > > I would be really glad to have a shared libvirt between oVirt and Xen > projects. Are you planning on only building the most recent release, or on > maintaining some older releases for some period of time? > > -George Jiri welcome aboard :-) Please add yourself and your project to https://wiki.centos.org/SpecialInterestGroup/Virtualization To get more info about the build system please read: https://wiki.centos.org/HowTos/CommunityBuildSystem CentOS provides a jenkins instance running at https://ci.centos.org/ for testing your builds. Feel free ask here if you have any question. -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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help
by ANDREW.LUCAS＠L-3Com.com 12 Dec '16

12 Dec '16

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vm.dirty_ratio
by Gokan Atmaca 07 Dec '16

07 Dec '16

Hello I get the following error on the server. The problem is resolved when you restart. But is this causing the problem? messages_log: INFO: task jbd2/dm-1-8:674 blocked for more than 120 seconds echo 0 > /proc/sys/kernel/hung_task_timeout_secs Thanks.

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Re: [CentOS-virt] Aftermarket Xorg RPMS for Xen4CentOS and failing X under Xen
by Kevin Buckley 07 Dec '16

07 Dec '16

Apologies for the empty subject: attempting to fix that

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(no subject)
by Kevin Buckley 07 Dec '16

07 Dec '16

I have a CentOS (6.8) box running as Dom0 that uses xen-4.6.3-4.el6.x86_64.rpm kernel-3.18.44-20.el6.x86_64.rpm and friends from the virt repo. I can get a basic X environment (Vesa driver) when running in non-Xen mode but, when booting into the hypervisor, that fails. I've tried one suggestion, adding a nopat to the kernel invocation, but that hasn't helpd although I'm sure the full suggestion, which I can no longer find, also mentioned an "mtrr" addition as well. I'm also sure believe I even saw someone get pointed to some "aftermarket" xorg-x11 RPMs that claimed to work better with the Xen4CentOS environment than the standard ones. My ability to search the interweb thing and find this info has clearly fallen to an all time low, so, does anyone on here have a better memory than I do, as regards that stuff ? (Assuming i didn't dream it!)

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Upstream libvirt releases for Virt-SIG
by Jiri Denemark 06 Dec '16

06 Dec '16

Hi all, I talked to our oVirt developers who use CentOS for upstream development. And that's what makes their lives hard because it takes a long time before they can start using new features of libvirt. The latest released CentOS version is 7.2 with libvirt 1.2.17, which is pretty old. But even when CentOS 7.3 with libvirt 2.0.0 gets released, it will already be old since libvirt 2.5.0 is just about to be released upstream. So to help them, I'd like to start building upstream releases of libvirt for Virt-SIG. As one of the core libvirt developers and a maintainer of libvirt in RHEL I think I should be qualified enough to do so :-) The goal is to take every upstream release of libvirt soon after it's been released and rebase the current CentOS package on top of it. If it sounds good to you, what should I do to get started? Jirka

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Running i386 guests under CentOS7 amd64 kvm host
by C. L. Martinez 01 Dec '16

01 Dec '16

Hi all, Maybe it is a stupid question, but I a totally lost. When I try to configure an ubuntu i386 guest under CentOS7 amd64 kvm host (fully patched) using virt-manager, I can't select what architecture I want to use. If I try to change guest.xml using "virsh edit", I can do it, but guest doesn't starts ... Is it not possible to run i386 guests under CentOS7 amd64 kvm hosts?? Thanks. -- Greetings, C. L. Martinez

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Virt SIG page
by Sandro Bonazzola 30 Nov '16

30 Nov '16

Hi, I would suggest to review https://wiki.centos.org/SpecialInterestGroup/Virtualization and update it a bit. I think it's a bit outdated. -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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Fwd: Still no C4-8xl for Centos6-HVM AMI
by John Peacock 30 Nov '16

30 Nov '16

I asked back in September about getting the Centos6-HVM AMI updated to support the C4-8XL instance type. Karanbir responded https://lists.centos.org/pipermail/centos-virt/2016-September/005222.html but I still see no evidence this has happened. This is a major thorn in our side and has prevented us from going completely to the C4 instance type , which we need for performance (both CPU and network). Thanks in advance John -- JOHN PEACOCK senior software build and release engineer tel 877-887-3031 mobile 240-429-9334 email john.peacock(a)sparkpost.com

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