- Users - libvirt List Archives

[libvirt-users] CPU Model detection with virsh capabilities
by Olivier BONHOMME 09 Sep '11

09 Sep '11

Hello everybody, I am a new user discovering libvirt with KVM software. During my first VM creation, I saw an issue with virsh that I can't understand. I wanted to emulate another CPU than the classical qemu32 using virsh. So I used the virsh capabilites command to detect how is detected my CPU host which is an Intel Xeon E5410 and my problem is that this CPU is detected only with the cpumodel "pentium3". But if use the kvm -cpu ? command, it returns me the following capabilities : $ kvm -cpu ? x86 qemu64 x86 phenom x86 core2duo x86 kvm64 x86 qemu32 x86 coreduo x86 486 x86 pentium x86 pentium2 x86 pentium3 x86 athlon x86 n270 Moreover, if i decide to use the pentium3 cpumodel for my KVM VM, the CentOS freeze during its loading. My libvirt and kvm are the following on a Debian Squeeeze : $ virsh version Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: QEMU 0.8.3 Running hypervisor: QEMU 0.12.5 Does anybody already had the same issue or am I doing anything wrong ? Thanks for your answers Regards, Olivier BONHOMME

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[libvirt-users] Graphical framebuffers confuse, XML format about spice
by huachao yao 08 Sep '11

08 Sep '11

Hello, i want to start a guest OS in the server, and use spice to achieve graphical interaction with the guest OS. But when i config the XML file, i was confuse by spice . The graphic node is : <graphics type='spice' port='5990' ><listen type='address' address='127.0.0.1'/></graphics> but is has such error as below : libvir: QEMU error : internal error process exited while connecting to monitor: qemu-spice: -spice port=5990,addr=127.0.0.1,disable-ticketing: Invalid parameter 'addr' parse error: port=5990,addr=127.0.0.1,disable-ticketing What is the meaning of <listen type='address' address='*****'/>, If the localhost IP is A and the spice-server IP is B. what should i set the listen type ? to start the Domain and to achieve graphical interaction with the guest OS.

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[libvirt-users] Libvirt xen snapshot support?
by Joshua Harlow 07 Sep '11

07 Sep '11

Hi all, I was wondering if there was support for xen (not xenserver/xcp) for snapshotting. I have seen various sites that say it doesn't (using domainsnapshot) but I wanted to verify with the source. Thanks. Josh

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[libvirt-users] Libvirt vm migration with xen 4.1.1
by Rogério Vinhal Nunes 07 Sep '11

07 Sep '11

Hello, I am trying to migrate a virtual machine between two xen 4.1.1 hosts using libvirt, but as I use this command: virsh migrate --live vm102 xen+ssh://10.0.254.8 The following error happens: error: POST operation failed: xend_post: error from xen daemon: (xend.err "can't connect: [Errno -2] Name or service not known") The live migration works fine using "xm --live migrate vm102 10.0.254.8", so everything is correctly set up. Am I doing something wrong? Xen = 4.1.1 Ubuntu = 10.04 virsh version = Using library: libvir 0.8.8 Using API: Xen 3.0.1 Running hypervisor: Xen 4.1.0

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[libvirt-users] How to dedicate a NIC for VM traffic without assigning it an IP
by Albert Chin 07 Sep '11

07 Sep '11

I am testing out a new server with RHEL6 running KVM. We have a few NICs on the server, one of which we would like to dedicate to network traffic to/from the virtual guests. Is it possible to do this without assigning an IP address to the NIC? We're currently doing something like this with Vmware Server, HP's HPVM for HP-UX/IA, and IBM's PowerVM for AIX. -- albert chin (china(a)thewrittenword.com)

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[libvirt-users] Libvirt migration with Xen 4.1.1
by Rogério Vinhal Nunes 06 Sep '11

06 Sep '11

Hello, I am trying to migrate a virtual machine between two xen 4.1.1 hosts using libvirt, but as I use this command: virsh migrate --live vm102 xen+ssh://10.0.254.8 The following error happens: error: POST operation failed: xend_post: error from xen daemon: (xend.err "can't connect: [Errno -2] Name or service not known") The live migration works fine using "xm --live migrate vm102 10.0.254.8", so everything is correctly set up. Am I doing something wrong? Xen = 4.1.1 Ubuntu = 10.04 virsh version = Using library: libvir 0.8.8 Using API: Xen 3.0.1 Running hypervisor: Xen 4.1.0

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[libvirt-users] vlan and libvirt
by Vidon Guillaume 05 Sep '11

05 Sep '11

Hi, I have to deploy some Ubuntu machines via pxe/dhcp/tftp/preseed/puppet on a vlan. the switches are configured to add vlan tag to the traffic to/from those machines. To test new configuration, i tried to configure a domain alike it was connected by a port of a managed switch configured in general mode where untag id is not 1. Anybody have already done this ? Can i use openvswitch to do this ? Thank you GV

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[libvirt-users] RAID1 over IP?
by David Ehle 05 Sep '11

05 Sep '11

I asksed about this in November last year but got on response. Anyone have any ideas now? Does anyone here have any experience with using KVM/libvirt with RAID1 over IP/DRBD or other HA solution? I'm trying to figure out the hardware configuration I would need to be able to survive a failure or planned shutdown of any one unit in a virtualization cluster. KVM/libvirt makes moving running VM's from one host to another a no brainer, but I'm trying to figure out the right way to be able to take a the storage backend for maintenance without disrupting the VMs. Right now I'm thinking something like KVM + libvirt + heartbeat/corosync + pacemaker + DBRM on Ubuntu 10.04 with 3 or 4 nodes - 2 hosts, 2 storage, or 1 host, 1 host + storage, 1 storage. Any thoughts? Thanks!

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[libvirt-users] Char dev error
by Jatin Kumar 04 Sep '11

04 Sep '11

Hello, I have been trying to migrate a guest from one host to another. But it is showing this error: virsh --connect qemu+ssh://root@host1/system migrate --live --undefinesource testvm3 qemu+ssh://root@host2/system tcp://host2:48160 error: operation failed: failed to retrieve chardev info in qemu with 'info chardev' I have tried this command from the host1 also but it shows the same error. Another thing i would like to ask is the that whats the use of migrateuri in migrate command ? -- Jatin Kumar

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[libvirt-users] ssh connection problem
by zahra tavakoli 02 Sep '11

02 Sep '11

Hello, I have a problem in remote connection to libvirt deamon. when I add the ssh connection in virt-manager, this error message appears: server closed connection: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1022, in _try_open None], flags) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 107, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: server closed connection: Please let me know what the problem is. Thanks.

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