- Users - libvirt List Archives

[libvirt-users] "virsh list" doesn't show correct state in case of no reply from Guest OS
by Koji Inami 04 Aug '14

04 Aug '14

Hello, we were facing a bit of problem that "virsh list" command didn't show correct state, and I report it. I'm talking about a following message, for example. [root@server ~]# virsh list Id Name State ---------------------------------------------------- 1 rhel65 running The command showed "running" in spite of no reply from a Guest OS, while qemu process was dumping a corefile. So I guess the process was dying at that time. I'm sure the command shouldn't show "running" state because the process was not running. I believe that "crushed" or "shut off" are better than "running" in virDomainState. Please see: http://libvirt.org/html/libvirt-libvirt.html I'd like to hear your thinking. Best Regards, Koji

1 0

[libvirt-users] virtio hotplug in CentOS 5.10 guest incomplete
by Dennis Jacobfeuerborn 01 Aug '14

01 Aug '14

Hi, I just tried to hot-plug a virtio disk to a CentOS 5.10 guest that runs on a CentOS 6.5 host. The Problem is that while the device shows up under /sys/ the corresponding device node does not: /sys/devices/virtio-pci/virtio0: bus device driver modalias net:eth0 power status subsystem uevent vendor /sys/devices/virtio-pci/virtio1: block:vda bus device driver modalias power serial status subsystem uevent vendor /sys/devices/virtio-pci/virtio2: bus device driver modalias power status subsystem uevent vendor So virtio0 is eth0 and virt1 is vda but virtio2 has no device associated with it. Any ideas why the system doesn't pick up the device all the way? Regards, Dennis

1 0

[libvirt-users] XP and virtio
by Mauricio Tavares 01 Aug '14

01 Aug '14

So I need to create a XP vm. I am using lvm logical volumes for its disk, so I am using virtio. I got the iso in http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/images/, but how do I feed it to the XP install? I did try to mount it as a floppy and it hung there on "please wait"; I guess that means it did not like a 70MB iso as its floppy. But it also does not seem to want to look for the drivers if I mount the .iso as a CD. What else can I try?

3 3

[libvirt-users] How to configure selinux for lxc in libvirt
by Qiang Guan 01 Aug '14

01 Aug '14

Hi guys, I want to use selinux for my lxc vm starting by libvirt. How to configure this? Is there any documents about using selinux with libvirt? Thanks for any advice~ -- ------------ Jackie Best Regards

1 0

[libvirt-users] multicast traffic no longer working after reboot
by Dennis Jacobfeuerborn 31 Jul '14

31 Jul '14

Hi, today a couple of Hypervisors got restarted due to a power outage. While the systems and the VMs on the are running fine multicast traffic between the guests is no longer working. I generate multicast udp packet using iperf in the guest and check on the host using tcpdump: tcpdump vnet0 => multicast packets are visible tcpdump vlanbr8 => multicast packets are visible tcpdump em1.8 => no multicast packets visible vlanbr8 is the bridge, vnet0 the interface of the guest and em1.8 the physical interface for vlan 8. I compared the settings in /sys/class/net/vlanbr8/bridge/multicast_* with a system where multicast works fine and see no differences. brctl showstp also shows "mc router" to be 1 for both interfaces and the bridge. All settings in /proc/sys/net/bridge/* are 0. Any ideas why the bridge doesn't seem to forward multicast packets? iperf with unicast udp also works fine so it's just multicast that is the problem. Regards, Dennis

2 3

[libvirt-users] problem when using qemu 2.0.0 + libvirt 1.2.6
by weiwei li 31 Jul '14

31 Jul '14

Hi I got a problem when using qemu 2.0.0 + libvirt 1.2.6 . It just can not define a kvm vm successfully , errors like this : # virsh define 5ab4f49c-c99f-4dbd-9d7d-17a946b4c5a7.xml error: Failed to define domain from 5ab4f49c-c99f-4dbd-9d7d-17a946b4c5a7.xml error: unknown OS type hvm After several tries, i found that Qemu2.0 /qemu-kvm1.2+ libvirt1.0.2 and lower version is ok Qemu2.0 /qemu-kvm1.2+ libvirt1.0.3 and higher version is failed I have checked system as bellows: 1 kvm,kvm_intel modules are loaded(centos 6.2 /kernel 2.6.32) 2 bios is ok for hvm 3 qemu is installed and emulator path in xml config file is correct 4 I also tried to install glusterfs-devel-3.2.7-1.el6.x86_64 and rebuild qemu , no use. 5 virsh capabilities can not get guest capabilities in the failure scenario so ,why Qemu2.0 /qemu-kvm1.2+ libvirt1.0.3 and above version could not work? thanks, weiwei

2 2

[libvirt-users] missing libvirt-sock and libvirt-bin after compile libvirt 1.2.6
by Yuanzhen Gu 30 Jul '14

30 Jul '14

Good morning there, I compiled and installed libvirt latest version 1.2.6, previously I have apt-get install libvirt-bin, which should be virsh --version: 0.9.8. after apt-get purge libvirt-bin, I compile the libvirt 1.2.6 and installed it, when configure, I did: ./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-esx=yes I have compiled qemu and installed too, and make a symbolic link to /usr/bin/qemu-system-x86_64 but my question is even I launch a vm in qemu, $virsh list showed nothing, further more, 1) if I use virtual machine manager, it get connection failiure, due to socket to '/var/run/libvirt/libvirt-sock'; No such file of dirctory. 2). there is missing libvirt-bin under /etc/init.d/, after compile and installed libvirt 1.2.6 3). I tried to start libvirtd daemon, sudo /usr/sbin/libvirtd/start shows "/usr/sbin/libvirtd: unexpected, non-option, command line arguments" 4). I've checked /var/log/libvirt/libvirtd.log which shows cannot find suitable emulator for x86_64 I've stuck here for whole afternoon yesterday, any help or suggestion is highly appreciated !! thanks a lot in advance ! Best, Yuanzhen Best, Yuanzhen Best, Yuanzhen

1 0

[libvirt-users] VM not booting with physical hardware attached
by Pierre Schweitzer 30 Jul '14

30 Jul '14

Dear all, I'm looking for a bit of help with a problematic VM. We have an hypervisor which has 4 eth ports. 3 are already used, and I wanted to pass the 4th one directly to a VM (which is fully working without it). So, I modified the XML accordingly (which matches our hardware), adding: <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x03' slot='0x00' function='0x3'/> </source> </hostdev> I also activated Intel IOMMU in Linux (and rebooted). Then, I issued a virsh start <domain>. libvirt is able to fire the VM, but then the OS inside doesn't boot at all. I tried to go deeper into debugging and it seems that the VM cannot pass SeaBIOS anymore. It gets stuck in seabios, it seems. No "Booting" sentence displayed, only version of SeaBIOS, when I watch VNC ouput. I tried to use <bios useserial='yes'/> with a console to the VM. Nothing is displayed on the console. Here are the specs of the machine: -> Ubuntu 12.04LTS up to date -> libvirt 0.9.8-2ubuntu17.19 -> kvm 1.0+noroms-0ubuntu14.15 -> seabios 0.6.2-0ubuntu2.1 The ethernet card I try to attach is: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe Its PCI ID being: 14e4:1657 What are the possibilities to debug this issue? What are the possibilities to fix it as well? Thanks to everyone helping! With my best regards, -- Pierre Schweitzer <pierre(a)reactos.org> System & Network Administrator Senior Kernel Developer ReactOS Deutschland e.V.

1 1

[libvirt-users] lxc arp doesn't work at start for several seconds
by Jonathan Rudenberg 29 Jul '14

29 Jul '14

I’m running into an issue with libvirt-lxc networking. I have an init program that configures the eth0 interface with an IP and gateway when the container starts. I noticed that programs running in the container encountered “no route to host” errors and looked into it further. What I found is that ARP packets are not making it onto the gateway during the first few seconds of the container’s life. I have created a repro case that demonstrates this issue: https://github.com/titanous/libvirt-arp-bug All it does is configure eth0 and then ARPs the bridge IP. There are no ARP responses for ~4s and then everything starts working. The linked repo also contains pcap files from the veth and the bridge showing that the ARP packets are sent over the veth but don’t show up on the bridge. I’ve tested and run into this issue 100% of the time on Ubuntu 14.04 with libvirt 1.2.2 and Linux 3.13.0-32 as well as Fedora 20 with libvirt 1.1.3.5 and Linux 3.15.6-200. Any help would be appreciated, and I’m happy to provide more details if they would be useful. Thanks, Jonathan

2 2

[libvirt-users] Running domain-update memory not working
by usha basavaraju 29 Jul '14

29 Jul '14

>>> vm=co.lookupByName('test1') >>> vm.info() [1, 524288L, 524288L, 1, 20400000000L] >>> vm.setMemoryFlags(509952,1) # Live memory 0 >>> vm.info() [1, 524288L, 524288L, 1, 21430000000L] >>> vm.setMemoryFlags(509952,0) --- ## current memory 0 >>> vm.info() [1, 524288L, 524288L, 1, 21430000000L] >>> vm.XMLDesc() Not updating .. but api call not throwing any error.. What is the correct procedure for updating

2 1