virt June 2015

virt@lists.centos.org

18 participants
21 discussions

How to debug Ubuntu 8.04 LTS guest crash during install?
by Neil Aggarwal 04 Nov '25

04 Nov '25

Hello: I am using kvm on a CentOS 5.4 server. I am trying to install the TunkeyLinux Core appliance found here: http://www.turnkeylinux.org/core I downloaded the ISO file from the web site. Then, I used this command to intall it: virt-install -n tkl-core -r 512 --vcpus=1 --check-cpu --os-type=linux --os-variant=ubuntuhardy -v --accelerate -c /tmp/turnkey-core-2009.10-hardy-x86.iso -f /var/lib/libvirt/images/tkl-core.img -s 15 -b br0 --vnc noautoconsole When I connect to the VNC console, I get the Turnkey linux options screen. I select Install to hard disk from there and it seems to start the install but crashes during the installer startup. This is repeatable so there has to be a way to debug it. I tried turning on the debug option for virt-install but that did not give me any useful info. Any ideas how to debug this? Thanks, Neil -- Neil Aggarwal, (281)846-8957, http://UnmeteredVPS.net/cpanel cPanel/WHM preinstalled on a virtual server for only $40/month! No overage charges, 7 day free trial, PayPal, Google Checkout

3 4

Beta CentOS 7 Xen packages available
by George Dunlap 08 Sep '15

08 Sep '15

At long last, I'd like to announce beta packages for CentOS 7, available from the community build system. Start by installing the centos-release-xen: rpm -ivh http://cbs.centos.org/repos/virt7-xen-44-testing/x86_64/os/Packages/centos-… This will set up yum repositories for both the eventual release repositories (enabled by default), and the community build system repositories (disabled by default). At the moment, all packages will be stored in the virt-xen-44-testing repository. You can either enable this by default by editing /etc/yum.repos.d/VirtSIG-Xen.repo, or by adding "--enablerepo=virt-xen-44-testing". If you want, you can edit defaults /etc/sysconfig/xen-kernel Next, run 'yum update' to get the new kernel: yum --enablerepo=virt-xen-44-testing update kernel Now install xen: yum --enablerepo=virt-xen-44-testing install xen This should grab both xen and the updated kernel package. It should also automatically: * Add default commandline parameters for Xen and Linux when booting under Xen * Arrange for xen to come up first in the grub * Set the default boot entry to Xen. That's it! Reboot and you should be good to go. Libvirt packages aren't available yet but should be on the way soon (I'll announce them here.) Please report any problems or feedback to this list. -George

12 25

Libvirt 1.2.15 and Kernel 3.18.12 RPMs pushed to the Xen4
by Johnny Hughes 16 Jul '15

16 Jul '15

I have signed and pushed the libvirt-1.2.15-3 and kenel-3.18.12-11 RPMs into the xen4 repository for CentOS-6.6. These have been in virt6-testing for a few months now with no negative reports. They should be available on mirror.centos.org in 30 or so minutes and externally as those mirrors update themselves against mirror. Thanks, Johnny Hughes

4 4

Windows 10 tech preview build 10130
by Kanwar Ranbir Sandhu 08 Jul '15

08 Jul '15

Hi Everyone, Has anyone managed to install Windows 10 tech preview build 10130 as a KVM on a CentOS 6 host? I'm having problems that I haven't been able to get past. I can get the CD to boot and the install process to begin, but Windows keeps complaining about missing drivers. I've unsuccessfully tried the VirtIO ISOs from the Fedora project. The images I tried were: virtio-win-0.1-100.iso virtio-win-0.1.105.iso virtio-win-0.1.96.iso I have two IDE CD-ROMs attached which appears to be working fine (otherwise the installer wouldn't start and I wouldn't be able to traverse the VirtIO ISO). The NIC was an e1000, but I changed it to rtl8139. I've changed the HD from IDE, to Virtio iscsi to Virtio disk and none of that has seemed to help. I'd appreciate some pointers/tips. Regards, Ranbir -- Kanwar R.S. Sandhu

4 11

RHEL/CentOS 7.x KVM kernel instability & unreliability
by Vlastimil Holer 23 Jun '15

23 Jun '15

Hello, I'm managing smaller private virtualization infrastructure, currently based on CentOS 7.x. In the past we were running mostly on Debian 7 (kernel 3.2.x) and CentOS 6.x without problems. After we have upgraded to CentOS 7.x, I have experienced occasional physical host crashes when I did e.g. suspend or resume more virtual machines OR random virtual machine checkpoint was invalid and VM could not be resumed. I did few intesive tests on same hardware with: - CentOS 6.6 ... worked fine - CentOS 7.1 with 1. CentOS distribution kernel ... failed 2. Binary RHEL 7.1 distr. kernel ... failed 3. vanilla 3.10.80 kernel ... failed (plus various firmware releases and BIOS configurations) So far I could reliably run only CentOS 7.x with latest 4.0.5 kernel from ElRepo. 7.x kernel is based on 3.10.x, which failed for me as well. So I think there was some bug in KVM, which led to memory corruption. The result was either kernel oops or broken checkpoint and kernel oops occured later. I have opened bug on Red Hat https://bugzilla.redhat.com/show_bug.cgi?id=1231964 but since it's a private bug, I have created duplicate bug on CentOS http://bugs.centos.org/view.php?id=8949 There is described how to reproduce the problem including stress test script. I would appreciate if anybody can confirm it happens for him as well. Best regards, Vlastimil Holer

1 0

Kvm intel dual gigabit ethernet nic pass thru.
by mechy2k2000 22 Jun '15

22 Jun '15

Hello I am having a weird issue with a PCI-X Intel dual gigabit ethernet nic. While I am partially successful in pass thru with kvm, I have a weird issue with my pfsense freebsd vm. It see the two nics but gives them the same Mac address. I'm not sure if this is a pfsense bug or what. The nic works for everything but this Mac address issue. Long story short, I guess what I'm asking is there any options I should use when passing thru dual and quad Intel ethernet adapter right now I am using hostpci0: 1:00.0, driver=vfio Thanks Rafeal

1 0

CentOS 6 domU console issue
by Gene 20 Jun '15

20 Jun '15

Howdy, I'm having an issue with the console for CentOS 6 domUs. When I boot the domU I can see the console just fine. After grub has made its selection I get these errors: xenconsole: Could not open tty `': No such file or directory libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: console child [0] exited with error status 2 After that the boot process continues fine and I'm able to sign into the console of the domU instance. However, when I close the console my command prompt doesn't work properly anymore, keypresses aren't printed to the screen. This problem is nearly identical to this issue: http://lists.xen.org/archives/html/xen-devel/2014-01/msg02259.html However, for my situation xenconsoled is running. Has anyone else encountered this issue? $ rpm -aq | egrep xen\|centos-release centos-release-xen-6-4.el6.centos.x86_64 xen-licenses-4.4.1-5.el6.x86_64 xen-hypervisor-4.4.1-5.el6.x86_64 xen-4.4.1-5.el6.x86_64 xen-libs-4.4.1-5.el6.x86_64 xen-runtime-4.4.1-5.el6.x86_64 centos-release-6-6.el6.centos.12.2.x86_64 -Gene

1 1

Custom installer ISO for C7+xen
by Gautam Malu 19 Jun '15

19 Jun '15

Hi, I have made a installer script which builds a custom c7 installer iso, which delivers xen 4.4 stack over minimal c7 installation. I have already tested it out c7 and c6.6 but it should work with any fedora installation also. https://github.com/gautamMalu/centos-xen It uses virt7-xen-44-testing repo (http://goo.gl/b2w53S) so you will need access to internet during installation. It uses custom anaconda so you can use it with your own ks scripts. https://github.com/gautamMalu/XenInBox Here is link for pre-build iso https://www.dropbox.com/s/e2h2zh2mb0u629k/c7-xen.iso?dl=0 Please test it out, and provide your feedback. Best regards, Gautam Malu

1 0

Reminder: the CentOS Virt SIG meeting is at 14:00 today on #centos-devel
by Lars Kurth 16 Jun '15

16 Jun '15

1 0

Re: [CentOS-virt] [ovirt-users] oVirt 3.5.3 VDSM on CentOS Virt SIG
by Sandro Bonazzola 15 Jun '15

15 Jun '15

Il 15/06/2015 12:41, Daniel Helgenberger ha scritto: > Hello Sandro, > > frist thanks for the great news! > > On 15.06.2015 10:28, Sandro Bonazzola wrote: >> Hi, >> today oVirt 3.5.3 has been released[1] >> VDSM 4.16.20 and its dependencies has been tagged as release as well within the Virt SIG build repositories for CentOS Linux 7. >> In order to enable the needed repositories you need to create /etc/yum.repos.d/centos-virt-sig.repo with the following content: > > I tried and seem to be unable to find any adequate release notes for > VDSM. Can someone firect me there or what are the benefits of vdsm > 4.16.20 over 4.16.16? Here's the list of bugs fixed: http://www.ovirt.org/OVirt_3.5.3_Release_Notes#VDSM > > Thanks! > >> >> [virt7-kvm-common-release] >> name=virt7-kvm-common-release >> baseurl=http://cbs.centos.org/repos/virt7-kvm-common-release/x86_64/os >> enabled=1 >> gpgcheck=0 >> >> [virt7-ovirt-common-release] >> name=virt7-ovirt-common-release >> baseurl=http://cbs.centos.org/repos/virt7-ovirt-common-release/x86_64/os >> enabled=1 >> gpgcheck=0 >> >> [virt7-ovirt-35-release] >> name=virt7-ovirt-35-release >> baseurl=http://cbs.centos.org/repos/virt7-ovirt-35-release/x86_64/os >> enabled=1 >> gpgcheck=0 >> >> >> An initial submission for the repository rpm has been pushed[2] and is waiting for public GPG keys to be added. >> >> [1] http://lists.ovirt.org/pipermail/announce/2015-June/000175.html >> [2] https://gerrit.ovirt.org/41403 >> > -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

1 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

virt June 2015