- Users - libvirt List Archives

[libvirt-users] Ordering multiple network interfaces on vms
by john fisher 18 Dec '12

18 Dec '12

On a hypervisor with multiple interfaces, we'd like to make those interfaces available to each of multiple VMs. We have both bridged interfaces and SRIOV interfaces, no NAT interfaces. When we create a vm in virsh using an xml file with no network elements, but having interface elements, we get the interfaces in the vm, but the ordering of eth devices does not match the ordering on the hypervisor and we aren't sure the ordering is repeatable either. In other words, eth0 in the HV is thingA and eth1 is thingB, but on the VM eth0 is thingC eth1 is thingD and eth4 is thingA so forth. we have 12 interfaces so ordering or naming is important and confusing. We've tried to use the PCI bus numbers as seen in lspci on the HV, but no luck. Do we need to start using network elements in the vm's xml file or separately to control the ordering? Whats the usual practice here? Sample xml: <interface type='hostdev'> <source dev='eth3' mode='vepa'> <address type='pci' domain='0x0000' bus='0x16' slot='0x10' function='0x1'/> </source> <target dev='macvtap0'/> </interface> <interface type='bridge'> <source bridge='br4'/> <target dev='vnet0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Thanks! -- John Fisher

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[libvirt-users] ANNOUNCE: New libosinfo project mailing list
by Daniel P. Berrange 17 Dec '12

17 Dec '12

Historically the libosinfo project has used virt-tools-list(a)redhat.com for all its discussions. Since the project has grown and matured, it is time for a dedicated mailing list. If you are interested/involved with libosinfo, please subscribe to the new list: https://www.redhat.com/mailman/listinfo/libosinfo The list only accepts postings from members. Once subscribed you can post to libosinfo(a)redhat.com Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

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[libvirt-users] Virtualbox Driver
by Arslan Waqar 16 Dec '12

16 Dec '12

Hi all, I am new to the group and hence there might be a chance I might be asking a simple question... The thing is I compiled and installed libvirt from git. Then in my terminal window I started virsh. It started. Then since I had Virtual Box installed on my machine I ran "connect vbox:///session". Once I did this I got two errors which said: error: Failed to connect to the hypervisor error: internal error unable to initialize VirtualBox driver API I am unable to resolve this issue...Any input is welcome! Thanks! -- Regards, Arslan Waqar.

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[libvirt-users] alternate location of client pki artifacts
by Alon Bar-Lev 16 Dec '12

16 Dec '12

Hello, At libvirtd.conf there are configurations to override the defaults of the ca, cert, key of libvirt. Can the client configuration be also overridden? Thanks! Alon

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[libvirt-users] Newer Builds Available for Ubuntu 12.04 LTS?
by Andrew Martin 14 Dec '12

14 Dec '12

Hello, I am running Libvirt 0.9.8 and QEMU 1.0 on Ubuntu 12.04 LTS on several virtual machine servers and would like to take advantage of some of the snapshotting functionality available in newer versions of QEMU and Libvirt: https://www.redhat.com/archives/libvirt-users/2012-August/msg00086.html Is anyone maintaining newer binary builds for Ubuntu? I was not able to find a PPA with updated packages, and building from source is proving rather tricky because my custom-built packages have some differences from the official packages (e.g. no upstart integration). I would really like to use the newer versions of Libvirt and QEMU on this LTS release. Thanks, Andrew

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Re: [libvirt-users] NetworkManager and VM Bridged Networking
by Eric Blake 14 Dec '12

14 Dec '12

[adding libvirt-users] On 12/14/2012 01:26 AM, Chuck Forsberg WA7KGX N2469R wrote: > I tried using the procedure in > http://fedorasolved.org/Members/kc8hfi/qemu-kvm-bridged-networking. > > The first thing this article mentions is that NetworkManager cannot work > with bridged networking. This is \unfortunate\ as Lunix stopped being a > useful server when I tried ro revert to the old "network" as suggested > by the article. > > I have no trouble running the VM on a satellite machine and have its > guest operating system (SCO Unix) mount the server's NFS shares. > I would like to have an SCO image running in a VM on the server and > still be able to mount NFS shares from the server. > > Since NetworkManager is more and more an indespensible part of Fedora, > how can I do the needed bridged networking in the new environment? Does this page of examples help? http://libvirt.org/formatnetwork.html#examples If not, what setup are you trying to achieve? It may be that the libvirt folks can better answer your question on how to set it up, while still using NetworkManager. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org

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[libvirt-users] RHEL6 cgroup error after a few days of uptime
by Dax Kelson 13 Dec '12

13 Dec '12

I have a RHEL6 that hosts many kvm virtual machines. It has been working fine for a couple years. I apply errata updates about once a week. In the last couple weeks, I've ran into a bug where the virtual machines start failing to start with a cgroup error message. If I reboot the host (very disruptive) then things start working normaly for a few days. Can I configure qemu/libvirt not to use cgroups at all as a temporary workaround? How would I do that? Here is example of trying to start a vm (that hasn't been started since boot) after the problem manifests itself. [root@virthost ~]# find /cgroup | grep r04s14 [root@virthost ~]# virsh start r04s14 error: Failed to start domain r04s14 error: Unable to create cgroup for r04s14: No such file or directory [root@virthost ~]# find /cgroup | grep r04s14 /cgroup/cpu/libvirt/qemu/r04s14 /cgroup/cpu/libvirt/qemu/r04s14/cpu.rt_period_us /cgroup/cpu/libvirt/qemu/r04s14/cpu.rt_runtime_us /cgroup/cpu/libvirt/qemu/r04s14/cpu.stat /cgroup/cpu/libvirt/qemu/r04s14/cpu.cfs_period_us /cgroup/cpu/libvirt/qemu/r04s14/cpu.cfs_quota_us /cgroup/cpu/libvirt/qemu/r04s14/cpu.shares /cgroup/cpu/libvirt/qemu/r04s14/cgroup.event_control /cgroup/cpu/libvirt/qemu/r04s14/notify_on_release /cgroup/cpu/libvirt/qemu/r04s14/cgroup.procs /cgroup/cpu/libvirt/qemu/r04s14/tasks /cgroup/cpuacct/libvirt/qemu/r04s14 /cgroup/cpuacct/libvirt/qemu/r04s14/cpuacct.stat /cgroup/cpuacct/libvirt/qemu/r04s14/cpuacct.usage_percpu /cgroup/cpuacct/libvirt/qemu/r04s14/cpuacct.usage /cgroup/cpuacct/libvirt/qemu/r04s14/cgroup.event_control /cgroup/cpuacct/libvirt/qemu/r04s14/notify_on_release /cgroup/cpuacct/libvirt/qemu/r04s14/cgroup.procs /cgroup/cpuacct/libvirt/qemu/r04s14/tasks [root@virthost ~]#

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[libvirt-users] oVirt workshop coming up - January 22-24 2013
by Dave Neary 13 Dec '12

13 Dec '12

Hi everyone, I thought that some of you might be interested to hear about an upcoming event I'm helping put together, an oVirt workshop in NetApp HQ in Sunnyvale, California on January 22-24. oVirt is (as I'm sure most of you know) a management system for KVM-based virtualization - allowing you to easily handle VMs, network, storage and hosts in a virtual datacenter. The workshop's three day agenda will cover installation and use of oVirt, integrating with oVirt though the platform's APIs, and contributing to development of the project. This is an excellent opportunity to find out what's coming in future versions of RHEV, and to meet users who are on the bleeding edge of what we will be shipping in future products. Reserve your spot at this free event by registering at http://ovirtnetapp2013.eventbrite.com/, and see http://www.ovirt.org/NetApp_Workshop_January_2013 for more information. We are actively seeking presenters who can talk about interesting ways in which they are using oVirt, or share integration stories. Please send proposals for talks to workshop-pc(a)ovirt.org - the official end of the call for content is Friday 14th of December, 23:59 PST, but since we will not be drafting the schedule until next week, any proposals received by Monday will also be considered. Thanks! Dave. -- Dave Neary - Community Action and Impact Open Source and Standards, Red Hat - http://community.redhat.com Ph: +33 9 50 71 55 62 / Cell: +33 6 77 01 92 13

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[libvirt-users] CentOS 6.3 LXC guest with CentOS 6.3 host
by Ajey Gore 13 Dec '12

13 Dec '12

I have been struggling with LXC libvirt driver. I created LXC container fs from "yum install" with install root option. After that edited few files and created special nodes rm -f /dev/null mknod -m 666 /dev/null c 1 3 mknod -m 666 /dev/zero c 1 5 mknod -m 666 /dev/urandom c 1 9 ln -s /dev/urandom /dev/random mknod -m 600 /dev/console c 5 1 mknod -m 660 /dev/tty1 c 4 1 chown root:tty /dev/tty1 mkdir -p /dev/shm chmod 1777 /dev/shm mkdir -p /dev/pts chmod 755 /dev/pts basically all instructions from here http://wiki.1tux.org/wiki/Centos6/Installation/Minimal_installation_using_y… My configuration looks like this <domain type='lxc'> <name>c03</name> <memory unit="G">4</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/srv/libvirt-1.0.0/src/libvirt_lxc</emulator> <filesystem type='mount'> <source dir='/srv/guest/c03'/> <target dir='/'/> </filesystem> <interface type='network'> <mac address='52:54:00:00:00:01'/> <source network='default'/> <target dev='vnic-c03'/> <model type='virtio'/> </interface> <console type='pty' /> </devices> </domain> I compiled libvirt from source. MY container comes up fine but I get init: tty (/dev/tty1) main process ended, respawning init: tty (console) respawning too fast, stopped also, I can't login as root, because it say /dev/pts/0 is not safe, but if I add a normal user with chroot and then I login, it works perfectly. So in this case, after init stops everything, I can't get rc.local to execute and in turn can't get ip address and other configurations up and running. help? -- Thanks Ajey

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[libvirt-users] Networking problem on virtualized pfSense firewall
by Lorenzo Milesi 13 Dec '12

13 Dec '12

Hi. I've a strange problem with networking and a KVM virtualized pfsense firewall. My hw host is Ubuntu 12.04 fully updated, with two bridges br0 (LAN) and br1 (WAN). pfSense is a KVM guest with the two interfaces in virtio mode. When I run pfSense as fw, the host doesn't seem capable of doing tcp connections outside. I can ping any internal and exernal host, but when I try telnetting 25 or 80 outside it won't work. Every other host in the LAN can surf and make every kind of connection outside and inside, just the host cannot. At fist I thought it was a pfSense problem, because if I run another VM guest with another firewall the host can connect, but what makes me think it's a host networking issue is that with this other FW I experience other weird problems, like not being able to connect to the physical host when connected via VPN. I double checked iptables and there's no block, everything is accepted. KVM setup is pretty much the ubuntu default. Any idea? thanks -- Lorenzo Milesi - lorenzo.milesi(a)yetopen.it GPG/PGP Key-Id: 0xE704E230 - http://keyserver.linux.it

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