virt February 2015

virt@lists.centos.org

15 participants
16 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

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libvirt errors after applying RPMS from 2015:X002
by rgritzo 24 Mar '15

24 Mar '15

Thanks for the info. I am trying to connect to the Xen hypervisor, via a localhost connection defined in the virt-manager configuration. here is the detail provided in the error dialog: ————————— Unable to open a connection to the Xen hypervisor/daemon. Verify that: - A Xen host kernel was booted - The Xen service has been started internal error: DBus support not compiled into this binary Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1168, in _open_thread self.vmm = self._try_open() File "/usr/share/virt-manager/virtManager/connection.py", line 1152, in _try_open flags) File "/usr/lib64/python2.6/site-packages/libvirt.py", line 105, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: internal error: DBus support not compiled into this binary —————————— The hypervisor and VM’s work. If i start and manage VMs with virsh, the work fine. it just is the virt-manager that seems broken, but that is important for my operation. i just applied the patches to a second machine - just in case it was something about the first one - and the same results. i am not as versed in python debugging as i would like to be, so this will be a challenge. it sure seems like the issue is in the libvirtd library from the error messages - but i will keep poking at it as time permits and post here if i have any answers... thanks. r. > On Wed, Jan 28, 2015 at 09:54:54PM -0700, rgritzo wrote: > > folks: > > > > after applying the updated rpms from advisory 2015:X002 i am having problems with libvirtd, and with virt-manager. > > > > if i run libvirtd in the foreground and look at the error messages, the error i see is > > 2015-01-29 04:45:27.342+0000: 6477: error : virDBusGetSystemBus:1742 : internal error: DBus support not compiled into this binary > > > > Hmm, weird, it works OK for me.. > > > and virt-manager is unable to connect to the hypervisor. this started after i applied the subject patches. > > > > is this an issue with the recent versions of libvirt? > > anybody else seeing this behavior? > > > > What hypervisor are you trying to use? Xen? KVM ? > > > btw - system is centos 6.6, kernel 3.10.63-11.el6.centos.alt.x86_64 > > > > I'm using the same kernel with Xen 4.4.1 rpms. > > > > thanks in advance. > > > > -- > > rgritzo at gmail.com > > > > > — Pasi — r.

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Disable/stop nic in a virtual guest with virsh
by C. L. Martinez 11 Mar '15

11 Mar '15

Hi all, How can I stop/disable a nic in a virtual guest using a virsh command?? I am searching the same effect like if I unplug network cable ... Is it possible?? I have tried with "detach-interface" command without luck. I don't want to remove the nic from guest configuration, only to stop the nic ... Thanks. P.D: Host is CentOS 6.6 x86_64 fully patched.

9 15

Virt SIG meeting on March 10th - I am on holiday
by Lars Kurth 04 Mar '15

04 Mar '15

I would need a volunteer to kick off and start the meeting Lars

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Managing virt-manager's ever growing log file
by Robert Nichols 26 Feb '15

26 Feb '15

I'm looking for suggestions on managing the ever growing log file from virt-manager (~/.virt-manager/virt-manager.log). All the info I've read says that the log file is overwritten on each virt-manager startup. That is demonstrably not true, at least for virt-manager-0.9.0-28.el6. I see "virt-manager startup" entries going all the way back to the first time I started it. So, it looks like some arrangement with logrotate is in order. Does a running virt-manager have any facility for telling it to close and reopen its log file, or do I have to use the "copytruncate" function of logrotate? -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.

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Video resolution for CentOS guest
by Robert Nichols 25 Feb '15

25 Feb '15

Would someone please point me to some reasonably current instructions for getting greater than 1024x768 video resolution for a CentOS 6 guest on a CentOS 6 KVM/qemu host? When I search online I find stuff from 2009 and 2010 saying, "For details see ...," and linking to a URL that no longer exists, or pages that say, "You need to switch from VNC to Spice," and giving a long list of out-of-date instructions for doing so. (With virt-manager it takes 2 clicks to do that. Of course it doesn't help -- still maxes out at 1024x768.) I've found that I can just append "vga=0x380" to the kernel command line and see Plymouth come up with the full graphical boot screen in the correct 1440x900 resolution, but as soon as gdm starts up, the display scrambles. I find suggestions to generate an xorg.conf file, but no mention of what to put in it. I can run "Xorg -configure", but the resulting file contains nothing about video modes, so it's not apparent what needs to be added. I find it particularly annoying that a Windows 7 guest can set any resolution I want up to 2560x1600, but a Linux guest can't go higher than 1024x768. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.

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Reminder: CentOS Virt SIG IRC meeting on #centos-devel at 14:00 UK time today
by Lars Kurth 24 Feb '15

24 Feb '15

See http://wiki.centos.org/SpecialInterestGroup/Virtualization <http://wiki.centos.org/SpecialInterestGroup/Virtualization>

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oVirt gaps for Virtualization SIG
by Sandro Bonazzola 18 Feb '15

18 Feb '15

Hi, following up to CentOS Virt SIG meeting here is a quick review of the gaps we have for porting ovirt within CentOS Koji. On the manager side, in order to properly build ovirt-engine (the main package in oVirt project) we're missing several pre-requisites. We're relying on a binary packaging of jboss-as 7.1 we ship as ovirt-engine-jboss-as. So first step should be to rebuild Fedora 19 JBoss rpms within CentOS 7. We're also using maven for building ovirt-engine. A proper packaging for using koji as build system requires to re-package ovirt-engine following fedora guidelines [1]. Issue here is that we're missing lot of maven dependencies like google GWT not yet packaged in Fedora and also other dependencies available in Fedora but not in CentOS 7 like: apache-sshd >= 0.11.0 checkstyle >= 5.4 dbunit >= 2.4.8 infinispan >= 5.2.5 javapackages-local jboss-modules >= 1.1.1 maven-checkstyle-plugin >= 2.9.1 maven-jaxb2-plugin >= 0.8.1 maven-processor-plugin >= 1.3.7 openstack-java-client >= 3.0.6 openstack-java-glance-client >= 3.0.6 openstack-java-keystone-client >= 3.0.6 openstack-java-quantum-client >= 3.0.6 openstack-java-resteasy-connector >= 3.0.6 powermock-junit4 >= 1.5 quartz >= 2.1.2 snmp4j >= 2.2.2 spring-ldap >= 1.3.1 springframework-test >= 3.1.1 On the host side we've been able to build everything in koji. Some dependencies have been rebuilt from EPEL but other than that we should be fine[2]. Only blocker we have on this is qemu-kvm-rhev, we discussed about the rhev suffix during the meeting and we haven't reached an agreement yet within oVirt on how to handle it. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1168605 [2] http://wiki.centos.org/SpecialInterestGroup/Virtualization/Roadmap -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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"docker-master" package: daily builds of docker master branch
by Lokesh Mandvekar 16 Feb '15

16 Feb '15

Daily builds of docker master branch are available in the virt SIG repository as package 'docker-master': http://cbs.centos.org/koji/buildinfo?buildID=690 Should mostly work fine though use it AT YOUR OWN RISK. If you'd prefer to use something stable, you could choose between the RHEL-recompiled 'docker' package available in centos-extras and the 'docker' package available in the virt SIG repository. Feedback/comments/bugs/patches welcome. -- Lokesh Freenode, OFTC: lsm5 GitHub: @lsm5 GPG: 0xC7C3A0DD

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Re: [CentOS-virt] docker 1.5 in virt7-testing
by Lokesh Mandvekar 13 Feb '15

13 Feb '15

On Fri, Feb 13, 2015 at 12:15:39PM +0000, Karanbir Singh wrote: > hi guys, > > docker 1.5 is now in virt7-testing repos, please test and feedback so we > can move to release.. > > thanks lokesh! > > - KB > Sure thing KB. Also, docker-registry will be ready for release by tonight (meaning working package and docs etc.) docker HEAD for c7 ------------------ I was hoping for wider feedback on daily rebuilds of docker master branch for c7 (which I already do for fedora rawhide), under a new package name (docker-unstable / docker-head / whatever). IIRC, KB and jperrin were for it. How does that sound to others? Or should I go ahead with this already? :) Thanks! -- Lokesh Freenode, OFTC: lsm5 GitHub: @lsm5 GPG: 0xC7C3A0DD

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virt February 2015