- Users - libvirt List Archives

[libvirt-users] Forward routed network bridge on system's vlan
by RaSca 30 May '11

30 May '11

Hi all, I created a two node cluster that manages virtual machines with two servers connected via a cross cable on the network 10.0.0.0/24. I want that machines that runs on different servers in the network 172.16.0.0/24 can see all the others. To make this possible I've configured a vlan on each server: ... ... 5: eth1.111@eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 5c:d9:98:b1:4c:4d brd ff:ff:ff:ff:ff:ff inet 172.16.0.0/24 brd 172.16.0.255 scope global eth1.111 inet6 fe80::5ed9:98ff:feb1:4c4d/64 scope link valid_lft forever preferred_lft forever ... ... And created a "lan" network, via virsh: <network> <name>lan</name> <uuid>8ac034c8-553d-b995-5a80-c1c711cb088c</uuid> <forward dev='eth1.111' mode='route'/> <bridge name='virbr1' stp='on' delay='0' /> <ip address='172.16.0.2' netmask='255.255.255.0'> </ip> </network> but with this setup "lan" never comes up because, for some reason, the network is locked: # virsh net-start lan error: Failed to start network lan error: internal error Network 172.16.0.1/255.255.255.0 is already in use by interface eth1.111 What is not clear to me is why, if I turn down the eth1.111 device, start the lan network, turn eth1.111 up and then force the brctl addif command, everything works: # ifdown eth1.111 Removed VLAN -:eth1.111:- # virsh net-start lan Network lan started # ifup eth1.111 Set name-type for VLAN subsystem. Should be visible in /proc/net/vlan/config Added VLAN with VID == 111 to IF -:eth1:- # brctl addif virbr1 eth1.111 # brctl show bridge name bridge id STP enabled interfaces br0 8000.6c626dd7518e no eth0 virbr0 8000.000000000000 yes virbr1 8000.5cd998b14c4d yes eth1.111 Why manually is possible to make things work? What am I ignoring? Thanks a lot, -- RaSca Mia Mamma Usa Linux: Niente è impossibile da capire, se lo spieghi bene! rasca(a)miamammausalinux.org http://www.miamammausalinux.org

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[libvirt-users] libvirt boots from Knoppix-CD but not Debian-CD
by Christian Brandt 29 May '11

29 May '11

Debian Squeeze, libvirt 0.8.3, qemu-kvm 0.15.5 After configuring the cd image the bios screen shows: (tested with virsh, virt-install and virt-manager) Starting SeaBIOS (version 0.5.1-20110523_174945-brahms) Booting from CD-Rom 65MB medium found (bzw. whatever size) Boot failed: Could not read from CDROM (code 000c) ... the cd images (debian6-cd1, debian6-netinst, debian6-buisnesscard) have the correct md5sum an can be mounted, they simply do not boot. On the other hand, a recent knoppix ISO works well. Tested countless times. All access rights are 777. Only special feature: the host is a minimal installation done with debootstrap and contains not much else than libvirt, virt-manager and lxterminal. I am out of wit. Any ideas? -- Christian Brandt life is short and in most cases it ends with death but my tombstone will carry the hiscore

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[libvirt-users] kvm.h not found
by --[ UxBoD ]-- 27 May '11

27 May '11

Hello all, Am attempting to compile the latest version of libvirt against a custom kernel 2.6.32.40 under CentOS 5.6 and see this in the configure output: checking linux/kvm.h usability... no checking linux/kvm.h presence... no checking for linux/kvm.h... no I have tried to change where it is looking using: CPPFLAGS="-I /home/compuser/linux-2.6.32.40/include" ./configure but end up with the same result. What am I doing wrong ? -- Thanks, Phil

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[libvirt-users] polkit error when starting virt-manager on fedora14
by Alex 26 May '11

26 May '11

Hi, I have the following error in syslog when starting virt-manager and trying to connect: May 25 16:39:33 sage libvirtd: 16:39:33.525: error : remoteDispatchAuthPolkit:3846 : Policy kit denied action org.libvirt.unix.manage from pid 27509, uid 500, result: 512 I can manually start the kvm guest using virsh, but why can't virt-manager start them? This is on fedora14 x86_64: # rpm -qva|egrep 'virt|polkit|qemu' polkit-qt-0.99.0-2.fc14.x86_64 qemu-img-0.13.0-1.fc14.x86_64 python-virtkey-0.50-8.fc14.x86_64 qemu-kvm-0.13.0-1.fc14.x86_64 polkit-0.98-5.fc14.x86_64 polkit-gnome-0.97-4.fc14.x86_64 libvirt-python-0.8.3-9.fc14.x86_64 virt-viewer-0.2.1-1.fc13.x86_64 gpxe-roms-qemu-1.0.1-3.fc14.noarch virt-top-1.0.4-3.fc13.x86_64 libvirt-client-0.8.3-9.fc14.x86_64 virtuoso-opensource-6.1.2-1.fc14.x86_64 qemu-common-0.13.0-1.fc14.x86_64 polkit-desktop-policy-0.98-5.fc14.noarch redland-virtuoso-1.0.12-1.fc14.x86_64 python-virtinst-0.500.6-1.fc14.noarch libvirt-0.8.3-9.fc14.x86_64 qemu-system-x86-0.13.0-1.fc14.x86_64 virt-manager-0.8.7-2.fc14.noarch Please let me know what other information I can provide to fix this problem. I haven't rebooted yet, but I suspect at least that would fix it? Thanks, Alex

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[libvirt-users] Failed to connect to Xen 4.1 using virsh
by YAO 26 May '11

26 May '11

Hi, I installed xen 4.1 and libvirt 0.9.1 on ubuntu 10.04 x86 when I tried "*virsh -c xen:/// list*", the terminal give me error: *error: unable to connect to '/var/run/libvirt/libvirt-sock', libvirtd may need to be started: No such file or directory* *error: failed to connect to the hypervisor* But when I tried "*sudo virsh -c xen:/// list*", there's different error: *error: unable to connect to 'localhost:8000': Connection refused* *error: failed to connect to the hypervisor* That really confused me. Do I need to start libvirtd like "*sudo libvirtd*"? cause "*virsh -c test:///default list*" is OK without it. I have started xencommons and xend, so I really don't know what I missed... Thanks, Yao

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[libvirt-users] Replace library WinXPs by virtual WinXPs as on a linux Fedora system?
by Rob 25 May '11

25 May '11

Hi, The current situation: * About 500 university library PCs run WinXP as the main OS. I would like to achieve the following: * Replace the WinXP by a linux system (Fedora?) with virtualizationsoftware (KVM?) and have WinXP as a guest OS, in such a way that the users immediately boot into WinXP without noticing the virtualization. * Over the network I should still be able to access the host Fedora OS. Is this a feasible idea? If yes, can you give me some clues how to start? Thank you! Rob.

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[libvirt-users] Replace library WinXPs by virtual WinXPs as on a linux Fedora system?
by Rob 25 May '11

25 May '11

Hi, The current situation: * About 500 university library PCs run WinXP as the main OS. I would like to achieve the following: * Replace the WinXP by a linux system (Fedora?) with virtualizationsoftware (KVM?) and have WinXP as a guest OS, in such a way that the users immediately boot into WinXP without noticing the virtualization. * Over the network I should still be able to access the host Fedora OS. Is this a feasible idea? If yes, can you give me some clues how to start? Thank you! Rob.

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[libvirt-users] Xen and live migration with VIR_MIGRATE_PERSIST_DEST
by Thibault VINCENT 24 May '11

24 May '11

Hi, I'm having a hard time to figure how to perform Xen live migration using the python API with the same rate of success than virt-manager. # virsh version Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: Xen 3.0.1 Running hypervisor: Xen 3.2.0 The goal is to have the migration done in only one call, including a definition in the remote xend and undefinition from the source, which requires the VIR_MIGRATE_PERSIST_DEST and VIR_MIGRATE_UNDEFINE_SOURCE flags. Here's the code doing the migration: ---------- flags = (libvirt.VIR_MIGRATE_LIVE ^ libvirt.VIR_MIGRATE_PERSIST_DEST ^ libvirt.VIR_MIGRATE_UNDEFINE_SOURCE) uri = 'xenmigr://remote.host.com:8002' domain_obj.migrate(con_handle, flags, None, uri, 0) ---------- There are various problems that occur randomly, such as the VM completely disappearing 5 seconds after a succesful migration, but the main issue is with VIR_MIGRATE_PERSIST_DEST that doesn't seem to have any effect. The domU is not defined in xend and will vanish when destroyed or on hypervisor reboot. Could that be a known problem or related to a bug ? I'm really out of ideas. Any help appreciated, Thank you ! -- Thibault VINCENT - IT SmartJog S.A.S. - Groupe TDF - Pôle multimédia 27 Bd Hippolyte Marques, 94200 Ivry-sur-Seine, France Phone: +33.1.58.68.62.38 / Fax: +33.1.58.68.60.97

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[libvirt-users] Java Bindings for libvirt
by Atul Gosain 24 May '11

24 May '11

Hi I looked at the java bindings for libvirt at http://libvirt.org/sources/java/ . Latest version here is 0.4.7 whereas the latest version of libvirtd is 0.9.1 . Does the java binding use latest libvirtd ? If not, can it be created easily ? Also, is there any plan to support HyperV support in future ? Thanks Atul

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[libvirt-users] Live Migration UDP implementation
by prakash hr 23 May '11

23 May '11

Hi all, For my academic project to analyse the Performance of transport protocols in Live Migration of Virtual Machines.I have configured the live migration using tcp and I succeed the live migration. Now for my further remaining project work I need to do the same thing for the UDP implemataiton.When I changed the command in virsh, (My fianl command in TCP is virsh migrate --live ubuntu21 qemu+ssh://172.16.17.23/systemtcp:// 172.16.17.23:444) to udp it is not workng. It is given that qemu embeds user mode network stack which includes tcp,dhcp,udp.etc within the wemu process. Its giving the error no API found for UDP. ---Now i want to implement the patch file for migration using UDP if possible. ---Where I should change the API in order to perform the live migration using UDP. ---Is any patch file available so that modifying that patch file will perform the Live Migration using UDP. ---If implementation using not possible with UDP please give me the details why that can not be implemented and is any proofs for that reasons are appreciated. --Is there any other transport layer protocols can be used instead of TCP during Live migration.? --How about using RUDP instead of TCP. Thanking You in advance. Thanks and Regards Prakash H.R M.Tech Student at RVCE, Bangalore +91-8904301073

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