May 2013 - Users - libvirt List Archives

[libvirt-users] some problem with snapshot by libvirt
by xingxing gao 22 Nov '14

22 Nov '14

Hi,all,i am using libvirt to manage my vm,in these days i am testing the libvirt snapshot ,but meet some problem: the snapshot was created from this command: snapshot-create-as win7 --disk-only --diskspec vda,snapshot=external --diskspec hda,snapshot=no but when i tried to revert from the snapshot which created from the above command ,i got error below: virsh # snapshot-revert win7 1338041515 --force error: unsupported configuration: revert to external disk snapshot not supported yet version: virsh # version Compiled against library: libvir 0.9.4 Using library: libvir 0.9.4 Using API: QEMU 0.9.4 Running hypervisor: QEMU 1.0.93

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[libvirt-users] managedsave results in unexpected shutdown from inside Windows
by Nicolas Sebrecht 28 Jun '13

28 Jun '13

Hi, I'm facing a strange behaviour of windows 2008 guests. After a virsh managedsave and start, the windows guest open a "unexpected shutdown" window. The window looks like this one (randomly taken from the web): http://toastytech.com/guis/srv2k3login2.jpg This happens in all virtualized windows in a hypervisor. Has anyone else experienced such issue? Thanks, -- Nicolas Sebrecht

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[libvirt-users] cgroup error starting domains
by Matteo Bernardini 22 Jun '13

22 Jun '13

Hi, I've got a small problem using libvirt-1.0.5.1 (with the latest patch in the v1.0.5-maint branch on git added). I'm using slackware64-14.0 but the situation is exactly the same described on a debian bug http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=707201 When trying to start a domain I got error: Failed to start domain debian-wheezy-xfce error: Unable to initialize /machine cgroup: Invalid argument with this in libvirtd.log virCgroupDetect:373 : Failed to detect mounts for /machine qemuInitCgroup:425 : Unable to initialize /machine cgroup: Invalid argument and the error goes away if I unmount /sys/fs/cgroup. Reverting to 1.0.4 fixes this, but this exposes another thing that I report even if I'm not sure it's an error: if I create a domain with 1.0.5.1 (I use the latest virt-manager to do this), in the xml of the domain there's a line that doesn't seem to have the close tag <controller type='pci' index='0' model='pci-root'/> If I revert to 1.0.4 the domain with this line in the xml doesn't even get listed between the available domains and I got this in libvirtd.log virDomainControllerDefParseXML:4838 : internal error Unknown controller type 'pci' deleting the interested line make it available again. Please let me know if you need further informations on the matters. Matteo

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[libvirt-users] libvirt tls error
by yue 03 Jun '13

03 Jun '13

centos6.3,libvirt 0.9.10. [root@ovirtdev private]# virsh -c qemu+tls://ovirtdev.localhost/system list 2013-04-22 03:37:09.362+0000: 9898: info : libvirt version: 0.9.10, package: 21.el6_3.8 (CentOS BuildSystem <http://bugs.centos.org>, 2013-01-28-19:24:16, c6b10.bsys.dev.centos.org) 2013-04-22 03:37:09.362+0000: 9898: warning : virNetClientIncomingEvent:1665 : Something went wrong during async message processing error: Unable to read TLS confirmation: Input/output error error: failed to connect to the hypervisor thanks

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[libvirt-users] About the change of a VM's vcpu count in runtime?
by Dennis Chen 02 Jun '13

02 Jun '13

Hi, We know that there is a command "setvcpus" in virsh used to "change number of virtual CPUs", now we just have the need to change vcpu count dynamically for a running VM, so I tried this command (the vcpu count is 2 in the VM xml file), below is the result: virsh # setvcpus 3 --count 4 error: invalid argument: requested vcpus is greater than max allowable vcpus for the domain: 4 > 2 virsh # setvcpus 3 --count 1 error: Operation not supported: qemu didn't unplug the vCPUs properly So I tried another way: log into the running VM, and "echo 0 > /sys/devices/system/cpu/cpu1/online", after that I can find only one processor in the vm through '/proc/cpuinfo', but in virsh, the vcpuinfo still shows: virsh # vcpuinfo 3 VCPU: 0 CPU: 0 State: running CPU time: 13.5s CPU Affinity: yyyy VCPU: 1 CPU: 1 State: running CPU time: 6.9s CPU Affinity: yyyy So the question is: is there any method I can't find yet to change the vcpu count of a running vm dynamically? BRs, Dennis

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[libvirt-users] Using source installed open vswitch with libvirt(or virsh).
by 황진환 01 Jun '13

01 Jun '13

P{font-size:10pt; line-height:16; margin-left:0; margin-top:0; margin-right:0; margin-bottom:0; font-family:gulim;} (English is not my first language Sorry for my poor English )   OS :  Linux nc233 2632-220171el6x86_64 #1 SMP Tue May 15 17:16:46 CDT 2012 x86_64 x86_64 x86_64 GNU/Linux CentOS release 63 (Final) open vswitch : 11190 virsh : 100 ibvirtd (libvirt) : 100   I have tried to see what the virsh setting can do to open vswitch(ovs) until now I had installed open vswitch from a source, not by using rpm or rpm build of the source (I had tried to do 'ovs rpm build' described at INSTALLRHEL included in ovs, But i failed to do it)   What i tried is this(http://blogscottloweorg/2012/11/07/using-vlans-with-ovs-and-libvirt/)  I installed and started up ovs and it looked like properly working I could create and delete bridges and ports with 'ovs-vsctl'    1 what i created before running 'virsh net-define'  -------------------------------------------- # ovs-vsctl show 76d9d6aa-cfce-4868-bf99-7d16bcfe38eb     Bridge "br0"         Port "br0"             Interface "br0"                 type: internal         Port "eth1"             Interface "eth1" --------------------------------------------     2 And then runned 'virsh net-define netxml' 'netxml' i used -------------------------------------------- <network>     <name>ovs-network</name>     <forward mode='bridge'/>     <bridge name='br0'/>     <virtualport type='openvswitch'/>     <portgroup name='vlan-01' default='yes'>     </portgroup>     <portgroup name='vlan-02'>         <vlan>         <tag id='2'/>         </vlan>     </portgroup>     <portgroup name='vlan-03'>         <vlan>         <tag id='3'/>         </vlan>     </portgroup>     <portgroup name='vlan-all'>         <vlan trunk='yes'>         <tag id='2'/>         <tag id='3'/>         </vlan>     </portgroup> </network> --------------------------------------------     3 vmxml which was used for 'virsh define vmxml' -------------------------------------------- <domain type="kvm">     <name>vm</name>     <memory>1048576</memory>     <vcpu>1</vcpu>     <os>         <type arch="x86_64" machine="pc">hvm</type>                 <boot dev="hd"/>     </os>     <features>         <acpi/>         <apic/>         <pae/>     </features>     <clock mode="localtime">         <timer name="rtc" tickpolicy="catchup" wallclock="guest"/>         <timer name="hpet" present="no"/>     </clock>     <devices>                  <emulator>/usr/bin/qemu-system-x86_64</emulator>                  <disk device="disk" type="file">                          <driver cache="writeback" io="threads" name="qemu" type="qcow2"/>             <source file="/root/img/vmimg"/>             <target bus="virtio" dev="vda"/>         </disk>         <interface type="network">             <mac address="d2:0d:45:a3:92:ea"/>             <source network='ovs-network' portgroup='vlan-02'/>         </interface>         <console type="pty">             <target port="0"/>         </console>         <input bus="usb" type="tablet"/>         <input bus="ps2" type="mouse"/>         <graphics autoport="yes" keymap="en-us" listen="0000"             port="-1" type="vnc"/>     </devices> </domain> --------------------------------------------     4 runned 'virsh start vm', and failed (messages had not been printed in english at my server, so i googled and tried to choose simillar sentecne which were shown in libvirt related threads please consider it) ----------------------------------------- #virsh start vm error : Failled to start domain vm error : Unable to add port vnet0 to OVS bridge br0 -----------------------------------------     At that time, /var/log/libvirt/libvirtdlog  (these are also translated) ----------------------------------------- 2013-05-23 04:32:14588+0000: 11455: error : virNetDevGetMTU:343 : Cannot get interface MTU on 'ovsbr0': No such device  2013-05-23 04:32:14678+0000: 11455: error : virExecWithHook:419 : Cannot find 'ovs-vsctl' in path: No such file or directory 2013-05-23 04:32:14679+0000: 11455: error : virNetDevOpenvswitchRemovePort:173 : Unable to delete port (null) from OVS: command does not allowed -----------------------------------------     I think above errors comes from install location of OVS as written in libvirtdlog How can i solve that by hands? (I'm also trying to solve the problem by installing ovs, using rpm build) There are not only fedora or ubuntu linux, so the solution may exist Are there a way to get libvirt to recognize ovs-vsctl? (As i mentioned above, ovs-vsctl and ovs are properly working)   Thank you for reading

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[libvirt-users] /dev/tty only on a new container
by Sebastien Douche 01 Jun '13

01 Jun '13

Hi folks :), I migrated the host from the Debian Squeeze to Ubuntu 12.10. Old containers work but I can't use the ssh command, /dev/tty is missing. On a new container, /dev/tty is here. The libvirt configuration is the same. Any ideas? Thanks. -- Sebastien Douche <sdouche(a)gmail.com> Twitter: @sdouche / G+: +sdouche

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[libvirt-users] iSCSI-based Storage Pool and virsh attach-device problems/questions
by Ken Stanley 31 May '13

31 May '13

Hello all, I am attempting to use the 'virsh attach-device' command to add storage to a guest from a pre-defined iSCSI-based storage pool. My desire is to attach a volume from the storage pool and have the storage pool recognize that the volume is in use and either flag it as such, or remove it from the pool so that subsequent queries to the pool will only return available storage volumes. The end goal is to have an automated system use the libvirt API assign storage volumes to new and existing guests on demand. I guess my first question is: Is this possible? Does libvirt give any indication that a storage volume within a pool is available or already in use? I would prefer to avoid having to externally manage this sort of thing if I can. I am using Debian Wheezy for the Dom0 and iSCSI SAN (identical setup), along with libvirt 1.0.5-2 from the experimental branch. I have Xen 4.1.4-3+deb7u1 installed, along with its accompanying packages. All of this is currently running under VirtualBox, but that is only for my testing/development purposes. I am able to get the Dom0 to recognize the SAN, and add the storage pool. When I attempt to use 'virsh attach-device', I get the following error: "error: Failed to attach device from device.xml \ error: POST operation failed: xend_post: error from xen daemon: (xend.err 'Block device must have physical details specified')". I have tracked this specific error down to the Xen python blkif.py, located under /usr/lib/xen-4.1/lib/python/xen/xend/server/blkif.py for my installation. After reading through the source, I found that under the getDeviceDetails def there is a non-existent configuration called 'uname' that is undefined. Looking deeper into the code, under the getDeviceConfiguration def, I see that the code is trying to read from the backend configuration, and expecting to see a 'type' and 'params' to use for setting the aforementioned 'uname' value. This is where I hit the wall, so to speak. After reading through the XML documentation for libvirt (http://libvirt.org/formatdomain.html#elementsDisks) I see nothing that I can further add to my XML description that would make sense for adding a volume from a storage pool. For kicks and giggles, I've tried using the disk type 'carom', which gets me past the failing python condition, but then gives me the following error when trying to do anything – in this case, just a simple dumpxml on the domain – with the guest through virsh: "error: internal error domain information incomplete, vbd has no src". Subsequently, if I try to call 'detach-device', I get the same error, leaving me with no other alternative but to destroy/undefine, and recreate the domain using define/start. I am able to ssh into the guest after the call to 'attach-device', but no device is present nor registered (as seen with dmesg). If I reboot the guest libvirt reports that the guest is "idle", but I cannot console into it due to the error mentioned in the previous paragraph. I can, however, use 'xm console <guest>' and gain access that way. Any and all advice that you can give would be greatly appreciated. I will do everything that I can to assist as far as trying all suggestions and following directions. :) Storage Pool XML: <pool type="iscsi"> <name>virtimages</name> <source> <host name="hv02.kstanley.vm"/> <device path="iqn.2013-05.vm.kstanley.hv02:vdisks"/> </source> <target> <path>/dev/disk/by-path</path> </target> </pool> Device XML: <disk type="volume" device="disk"> <source pool="virtimages" volume="unit:0:0:1"/> <target dev="xvdb" bus="virtio"/> </disk> Regards, Ken Stanley

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[libvirt-users] Does Set Block IO tune take effect in the same session.
by vikrant verma 31 May '13

31 May '13

Hello All, I am using virDomainSetBlockIoTune() API to set the IO tune parameter for a running guest VM. I observed that after setting the value succesfully i ned to Shutdown and start the VM inorder to take the set value in effect. Is there any way with which these values come in effect in the same session of the VM without Shutting down and starting the VM. Please help regards, Vikrant

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[libvirt-users] Enable bios useserial=yes from command line
by Knightmare 31 May '13

31 May '13

Hi Guys, I'm currently learning KVM and have set up an Ubuntu 12.04.2 VM running KVM. I am using the following command to provision a VM: virt-install --connect qemu:///system --ram "$ramsize" -n "$vmname" --boot network,hd,menu=on --os-variant="$variant" --disk path=/var/lib/libvirt/images/"$vmname".qcow2,device=disk,bus=virtio,format=qcow2 --mac= --cpu host --vcpus="$numcpus" --graphics none --noautoconsole --import But cannot seem to find a way to enable bios useserial=yes without issuing a virsh edit $vmname I've tried --extraargs= but that appears to be for kernel command lines, which is not what I want to achieve here. I'm looking for a way to enable serial BIOS from the point the VM is created. The current solution I am using is to do virsh destroy $vmname ; virsh edit $vm_name ; virsh start $vm_name which is not great, but gets the job done. My versions are as follows: Ubuntu 12.04.2 x86_64 kernel 3.2.0-39-generic libvirt 0.9.8-2ubuntu17.8 qemu-kvm 1.0+noroms-0ubuntu14.8 Thanks, Robert

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[libvirt-users] Question, how to coorelate snapshot ID's to the files that they represent?
by vonNieda, Adam (USMS) 31 May '13

31 May '13

Hi folks, first post :) I'm running Redhat 6 x64 with ibvirt-0.10.2-18 and qemu-img-rhev-0.12.1.2-2.355 My question is, if I do something like the following.. [root@testbox ~]# virsh snapshot-list STIGtest Name Creation Time State ------------------------------------------------------------ 1369421485 2013-05-24 13:51:25 -0500 disk-snapshot 1369768781 2013-05-28 14:19:41 -0500 disk-snapshot 1369920434 2013-05-30 08:27:14 -0500 disk-snapshot 1369920574 2013-05-30 08:29:34 -0500 disk-snapshot 1369920859 2013-05-30 08:34:19 -0500 disk-snapshot 1369920888 2013-05-30 08:34:48 -0500 disk-snapshot 1369921298 2013-05-30 08:41:38 -0500 disk-snapshot Is there another command I can issue to get the OS snapshot file that one of those snapshot names represents? Thanks very much! -Adam -- Adam vonNieda JMIS technical support Capgemini Government Solutions JPATS Kansas City Desk 816-467-1935

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[libvirt-users] Virsh with CPU features on XML file not working!
by Antonio Colín 31 May '13

31 May '13

Hello, Does anyone have masked their CPU flags with Libvirt?? It's because I have done so with Libvirt and Virsh compare / baseline. But when I boot the DomU I see the same flags as if I hadn't declare de <cpu> tag containing the features just as is described in: http://libvirt.org/formatdomain.html#elementsCPU I posted here my XML file definition: http://pastebin.com/ze5wvSZt I would be really grateful if someone shared your domain XML definition with me or tell me the syntax. I've been struggling for hours, just you know, following the documentation available but there is no functionality for me yet. Thank you a lot! Antonio Colín.

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[libvirt-users] “Unable to connect to libvirt” (xen, xl toolstack, and virt-manager)
by Gizmo Chicken 30 May '13

30 May '13

I get “Unable to connect to libvirt” when using virt-manager in combination with the XL toolstack and Xen 4.2.1. (No problems when using virt-manager in combination with the XM toolstack.) More details of the situation can be found in a bug-report that I filed on launchpad. Please see: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1180281 Judging from the information that I provided in the above referenced bug-report (some of which is copied below), does this appear to be an actual bug? Or have I failed to configure something properly? Thanks for any help with this! Best regards, GizmoChicken P.S. Here is more of the error that I get when attempting to start virt-manager: Unable to connect to libvirt. unable to connect to 'localhost:8000': Connection refused Verify that: - A Xen host kernel was booted - The Xen service has been started Libvirt URI is: xen:/// Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1027, in _open_thread self.vmm = self._try_open() File "/usr/share/virt-manager/virtManager/connection.py", line 1009, in _try_open flags) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 102, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: unable to connect to 'localhost:8000': Connection refused And here the output from var/log/libvirt/libvirtd.log 2013-05-18 05:44:47.614+0000: 1304: info : libvirt version: 1.0.5 2013-05-18 05:44:47.614+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.615+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.617+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.618+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.618+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.619+0000: 1304: error : xenHypervisorDoV2Sys:1006 : Unable to issue hypervisor ioctl 3166208: Permission denied 2013-05-18 05:44:47.635+0000: 1304: error : do_connect:103 : internal error failed to connect to xend 2013-05-18 05:44:47.636+0000: 1304: error : xenDaemonOpen_tcp:700 : unable to connect to 'localhost:8000': Connection refused 2013-05-18 05:45:13.647+0000: 1289: error : virNetSocketReadWire:1362 : Cannot recv data: Connection reset by peer

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[libvirt-users] Trouble running LXC through libvirt
by Shashank Sahni 30 May '13

30 May '13

Hi everyone, I followed the instructions here to create ubuntu lxc containers. https://help.ubuntu.com/12.04/serverguide/lxc.html#lxc-admin I then copied the rootfs to /var/lib/libvirt/images/precise and booted it as an "operating system container" through virt-manager. Here are the incidents. - It immediately showed on console "init: unable to create /dev/kmsg" but after a while it booted. - I had modified the image to allow static password for user ubuntu and I logged in. But to my surprise I wasn't able to use sudo. The error was "sudo: setuid is not set" I've tried this image on lxc and it works like a charm. But there seems to be some issue with libvirt. Some help would be greatly appreciated. -- Shashank Sahni

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[libvirt-users] Help needed regarding "virsh cpu-stats test_vm"
by Anusha Rayani 29 May '13

29 May '13

Hi, We are implementing feature called CPU separation in the platform. So, guest VMs will have dedicated cores allocated using cgroups (cgroups hierachy related VMs managed by libvirt). virsh cpu-stats command is not working in our platform : virsh # cpu-stats test_vm error: Failed to virDomainGetCPUStats() error: Requested operation is not valid: cgroup CPUACCT controller is not mounted It should show info like this. $ virsh cpu-stats test_vm CPU0: cpu_time 0.025812184 seconds vcpu_time 0.025812184 seconds CPU1: cpu_time 4.893484927 seconds vcpu_time 4.893484927 seconds Total: cpu_time 4.924620941 seconds user_time 1.060000000 seconds system_time 3.050000000 seconds We are suspecting some issue in virsh when it is trying to find to where that cgroups is mounted in a system (default in ubuntu is /sys/fs/cgroup/cpuset/libvirt/, but in our platform uses /dev/cgroup_xxx). Find /proc/cgroups and /proc/mounts log below: ================================== # cat /proc/cgroups #subsys_name hierarchy num_cgroups enabled cpuset 0 1 1 ns 0 1 1 cpu 1 3 1 cpuacct 0 1 1 memory 2 1 1 freezer 0 1 1 net_cls 0 1 1 blkio 0 1 1 # cat /proc/mounts cpu /dev/cgroup_cpu cgroup rw,relatime,cpu 0 0 memory /dev/cgroup_mem cgroup rw,relatime,memory 0 0 Can you please help us in this regard to enable this command in our platform, Thanks in advance !!! Regards, Anusha

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[libvirt-users] Usual number of guests on a host
by Parakkal, Navin S 29 May '13

29 May '13

Hi, Can someone tell us what is the usual number of guests on a typical host in a production environment ? Has someone tested this ? What number does it scale to ? We have around 150 per host running fine. Regards, Navin

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[libvirt-users] libvirt for Citrix XenServer
by Parakkal, Navin S 29 May '13

29 May '13

Hi, Can someone send me the build steps how to build for Citrix XenServer ? I want to build a version of libvirt for Citrix XenServer. Regards, Navin

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Re: [libvirt-users] libvirt for Citrix XenServer
by Parakkal, Navin S 29 May '13

29 May '13

________________________________ From: Prasad [prasad(a)mukhedkar.com] Sent: Tuesday, May 28, 2013 7:33 PM To: Parakkal, Navin S Subject: Re: [libvirt-users] libvirt for Citrix XenServer On 05/27/2013 12:13 PM, Parakkal, Navin S wrote: Hi, Can someone send me the build steps how to build for Citrix XenServer ? I want to build a version of libvirt for Citrix XenServer. Regards, Navin _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com<mailto:libvirt-users@redhat.com> https://www.redhat.com/mailman/listinfo/libvirt-users Navin, I don't think libvirt supports Citrix XenServer hypervisors. per the libvirt.org only following hypervisors are supported : * The KVM/QEMU<http://libvirt.org/drvqemu.html> Linux hypervisor * The Xen<http://libvirt.org/drvxen.html> hypervisor on Linux and Solaris hosts. * The LXC<http://libvirt.org/drvlxc.html> Linux container system * The OpenVZ<http://libvirt.org/drvopenvz.html> Linux container system * The User Mode Linux<http://libvirt.org/drvuml.html> paravirtualized kernel * The VirtualBox<http://libvirt.org/drvvbox.html> hypervisor * The VMware ESX and GSX<http://libvirt.org/drvesx.html> hypervisors * The VMware Workstation and Player<http://libvirt.org/drvvmware.html> hypervisors * The Microsoft Hyper-V<http://libvirt.org/drvhyperv.html> hypervisor * The IBM PowerVM<http://libvirt.org/drvphyp.html> hypervisor * The Parallels<http://libvirt.org/drvparallels.html> hypervisor > I think that is out of the box . I found these steps but was thinking if there is any wiki or link. https://www.redhat.com/archives/libvirt-users/2011-June/msg00042.html http://stackoverflow.com/questions/7130665/install-libvirt-with-xenserver-a…

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[libvirt-users] hangs in libvirt function virLogMessage
by Parakkal, Navin S 28 May '13

28 May '13

Hi, We are hitting a deadlock on libvirt on 0.9.4 version. Can someone help us ? 1) Is there any way to specify timeout for all the calls made by libvirt especially virConnectOpenReadOnly 2) Does virCommandRunAsync always fork a new process ? gdb) bt #0 0x00007fc17b53ce6e in __lll_lock_wait_private () from /lib64/libc.so.6 #1 0x00007fc17b4e3f2d in _L_lock_2164 () from /lib64/libc.so.6 #2 0x00007fc17b4e3ce7 in __tz_convert () from /lib64/libc.so.6 #3 0x00007fc16e4bfdab in virLogMessage () from /usr/lib64/libvirt.so.0 #4 0x00007fc16e4b092e in ?? () from /usr/lib64/libvirt.so.0 #5 0x00007fc16e4b2836 in ?? () from /usr/lib64/libvirt.so.0 #6 0x00007fc16e4b318c in virCommandRunAsync () from /usr/lib64/libvirt.so.0 #7 0x00007fc16e570705 in ?? () from /usr/lib64/libvirt.so.0 #8 0x00007fc16e56a1f8 in ?? () from /usr/lib64/libvirt.so.0 #9 0x00007fc16e55c3d2 in ?? () from /usr/lib64/libvirt.so.0 #10 0x00007fc16e55db10 in ?? () from /usr/lib64/libvirt.so.0 #11 0x00007fc16e52ed95 in ?? () from /usr/lib64/libvirt.so.0 #12 0x00007fc16e52f957 in virConnectOpenReadOnly () from /usr/lib64/libvirt.so.0 #13 0x00007fc153cdb858 in OalibvirtCollectionManager::libvirtColJobImpl::Run (this=0x7fc13182a610) at ../libvirtColJobImpl.cpp:348 #14 0x00007fc153cd6e83 in OalibvirtCollectionManager::libvirtColJob::Run (this=<value optimized out>) at ../libvirtColJob.cpp:36 #15 0x00007fc17cc8ee36 in OAScheduler::ScheduleWorker::Run (this=0x7fc15dd9ede0, myThread=<value optimized out>) at /svn-share2/BLR.ovpa.11.12.i/linx64/hpsw-oa/AgentFramework/cpp/src/Scheduler/ScheduleWorker.cpp:32 #16 0x00007fc17c04a418 in OvXplThread::ThreadInfo_t::Run() () from /opt/OV/lib64/libOvXpl.so #17 0x00007fc17c04a6a5 in runThread () from /opt/OV/lib64/libOvXpl.so #18 0x00007fc17b22f7f1 in start_thread () from /lib64/libpthread.so.0 [root@martellvm6 ~]# virsh version Compiled against library: libvir 0.9.4 Using library: libvir 0.9.4 Using API: QEMU 0.9.4 error: failed to get the hypervisor version error: internal error Cannot find suitable emulator for x86_64 [root@martellvm6 ~]# cat /etc/issue CentOS release 6.2 (Final) Kernel \r on an \m

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[libvirt-users] Help: Using Pre-created tap interfaces with Libvirt+Xen
by Raghu Nallamothu 25 May '13

25 May '13

Hi All., I am not sure if this is possible in xen via Libvirt, but what I am trying to do is, I want libvirt to launch a VM and attach a pre-created tap interface to that VM ( I do not want XEN to create one, as I am running a lot of custom scripts on my tap interface). I also dont want xen to attach this tap interface to a bridge. For example, lets say I have created a tap interface with name "tap123456" when libvirt launches my VM in xen, I want the VM to read its networking info from this tap interface. But I wasn't so successful in doing this when ever I am trying to do this, I am seeing the following error message "VmError: Device 0 (vif) could not be connected. Hotplug scripts not working." and "error: POST operation failed: xend_post: error from xen daemon: (xend.err 'Device 0 (vif) could not be connected. Cannot rename interface vif4.0. An interface with name tap12345 already exists.')". But I dont want xen to create another interface and rename it, rather want xen to use the existing one === output of lsmod === bash-4.1# lsmod | grep xen xen_acpi_processor 4465 0 xen_netback 25455 0 [permanent] xen_gntdev 9504 2 xen_evtchn 4899 3 xenfs 2943 1 xen_privcmd 4972 19 xenfs ==== end of output ==== My Configuration : Centos 6.2 with Xen 4.2.5 along with Libvirt Libvirt Configuration file, <domain type='xen'> <name>raghu_12345</name> <uuid>12113325-d948-4a1b-b673-888a16b90726</uuid> <memory>1048576</memory> <vcpu>1</vcpu> <os> <type>hvm</type> <loader>/usr/lib/xen/boot/hvmloader</loader> <boot dev='hd'/> </os> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <features> <pae/> <acpi/> <apic/> </features> <devices> <emulator>/usr/lib/xen/bin/qemu-dm</emulator> <interface type="ethernet"> <mac address='00:25:90:3f:25:91'/>  <target dev='tap123456'/> </interface> <disk type='file' device='disk'> <source file='~/tmp/lucid.img'/> <target dev='hda'/> </disk> <console type='pty'> <target port='0'/> </console> <graphics port='-1' type='vnc' autoport='yes' listen='0.0.0.0'/> </devices> </domain> I have a pre-created tap interface with name 'tap123456' with all the networking setup with dhcp and dns running. Thanks for your time and help. Regards Raghu

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[libvirt-users] hardware error 0x80000021 on Ubuntu 12.10, need advice
by Sebastien Douche 24 May '13

24 May '13

Hi, On a DELL r610 (Intel Xeon L5520) and a Windows guest I have an hardware error. The bug is well known[1][2] and seems fixed with the package 3.5.0-16-generic. But I use 3.5.0-30-generic. Do I need to upgrade to 13.10? Or just the kernel ? Or modify the options of the kvm module? Thanks. [1] https://bugzilla.redhat.com/show_bug.cgi?id=854983 [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1045027 logs: 2013-05-23 15:54:02.306+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm-spice -name windows1 -S -M pc-1.2 -enable-kvm -m 3500 -smp 2,sockets=2,cores=1,threads=1 -uuid d170225e-7367-4ece-4338-6b1811c10c0c -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/windows1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/srv/kvm/windows1.img,if=none,id=drive-ide0-0-0,format=qcow2 -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/srv/iso/windows7ultimate.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=18,id=hostnet0,vhost=on,vhostfd=19 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:49:32:cc,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga std -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 char device redirected to /dev/pts/1 KVM: entry failed, hardware error 0x80000021 If you're running a guest on an Intel machine without unrestricted mode support, the failure can be most likely due to the guest entering an invalid state for Intel VT. For example, the guest maybe running in big real mode which is not supported on less recent Intel processors. EAX=00000010 EBX=00000080 ECX=00000000 EDX=00000080 ESI=0025da4a EDI=0007da4a EBP=00001f20 ESP=00000200 EIP=0000009b EFL=00000002 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0020 00000200 0000ffff 00009300 CS =b000 002b0000 0000ffff 0000f300 SS =0020 00000200 0000ffff 0000f300 DS =0020 00000200 0000ffff 00009300 FS =0020 00000200 0000ffff 00009300 GS =0020 00000200 0000ffff 00009300 LDT=0000 00000000 0000ffff 00008200 TR =0000 00000000 0000ffff 00008b00 GDT= 002b0000 00000027 IDT= 00000000 000003ff CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 Code=02 00 00 ea 91 00 00 00 18 00 0f 20 c0 66 83 e0 fe 0f 22 c0 <66> 31 c0 8e d8 8e c0 8e d0 66 bc 00 04 00 00 8e e0 8e e8 ea 00 00 00 20 00 00 00 20 4a da -- Sebastien Douche <sdouche(a)gmail.com> Twitter: @sdouche / G+: +sdouche

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[libvirt-users] cpu passthrough
by Thomas Manninger 23 May '13

23 May '13

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[libvirt-users] snapshot create error, unable to find cgroup for vm
by Gao Yongwei 22 May '13

22 May '13

Hello: Yesterday I yum update libvirt from 0.9.10 to 0.10.2 ,after update I got some error in libvirtd.log like this: 2013-05-10 07:39:09.440+0000: 18824: warning : virCgroupMoveTask:885 : no vm cgroup in controller 3 2013-05-10 07:39:09.440+0000: 18824: warning : virCgroupMoveTask:885 : no vm cgroup in controller 4 2013-05-10 07:39:09.440+0000: 18824: warning : virCgroupMoveTask:885 : no vm cgroup in controller 6 so,I restarted cgconfig and libvirtd daemon : service cgconfig restart ; service libvirtd restart after that ,I cannot create snapshot for vm anymore.and error log message below: 2013-05-16 01:13:23.638+0000: 28848: error : qemuDomainSnapshotCreateDiskActive:11299 : internal error Unable to find cgroup for vm1 my version info : # rpm -q libvirt libvirt-0.10.2-18.el6_4.4.x86_64 # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.295.el6_3.1.x86_64 in /cgroup dir I cannot find anything about vm1.how can I recover the missing cgroup for vm ? thanks !

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[libvirt-users] USB passthrough not working
by Dale Amon 21 May '13

21 May '13

I just updated an Ubuntu Oneiric to Raring and the VM that works fine on one fails to start a VM with this passthrough: <hostdev mode='subsystem' type='usb' managed='no'> <source> <vendor id='0x055f'/> <product id='0x040b'/> <address bus='3' device='8'/> </source> </hostdev> It just dies at boot time.

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[libvirt-users] Two VF cards
by Dominik Mostowiec 21 May '13

21 May '13

Hi, I try to add 2 VF functions to VM via network. Livirt networks: vnet0: <network> <name>vnet0</name> <forward mode='hostdev' managed='yes'> <pf dev='eth0'/> </forward> </network> vnet1: <network> <name>vnet0</name> <forward mode='hostdev' managed='yes'> <pf dev='eth1'/> </forward> </network> In VM configuration: <interface type="network"> <source network="vnet0"/> <mac address="52:54:0a:b1:48:07"/> </interface> <interface type="network"> <source network="vnet1"/> <mac address="52:54:0a:b1:48:07"/> </interface> VM can't start because: kvm: -device pci-assign,configfd=24,host=01:10.1,id=hostdev0,bus=pci.0,addr=0x4: Duplicate ID 'hostdev0' for device libvirt version 1.0.5. What i am doing wrong? -- Regards Dominik

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