- Users - libvirt List Archives

Re: [libvirt-users] Virsh+QEMU, SSH issue on compiled libvirt
by Will Dennis 06 Mar '13

06 Mar '13

On Wed, 06 Mar 2013 10:35:08 +0100, Peter Krempa wrote: >This is true for normal connections using TCP. SSH tunneling works in a different way. Hi Peter, Can you tell me why I got the "I/O Error" message (like Shantan did) when trying qemu+ssh method against libvirtd 1.x when it worked fine with libvirtd 0.9.x? What changed with that method between 0.9.x and 1.x? (I am somewhat new to all things libvirt, so documentation references are gladly accepted :) Thanks, Will

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[libvirt-users] Virsh+QEMU, SSH issue on compiled libvirt
by Shantan Marepally (shanredd) 05 Mar '13

05 Mar '13

Hi All, I am trying to build libvirt from source, the compilation went fine and I see that various libvirt tools are being generated, but when I try to use the generated virsh with qemu and ssh (example virsh qemu+ssh://uri/system) I am not able to login and it fails with the following error: error: failed to connect to the hypervisor error: End of file while reading data: : Input/output error I verified the following so far: * QEMU driver is being enabled (--with-qemu, --with-qemu-user, --with-qemu-group), other options are default * Permissions and ssh logging setup are all fine (the same command with a precompiled virsh works fine) Any ideas? Thanks for your time. Shantan

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[libvirt-users] Debugging TLS connection between virt-viewer and libvirt running on separate hosts
by Will Dennis 05 Mar '13

05 Mar '13

Hi all, I'm running libvirt 1.0.2 on one host (Ubuntu 12.04), and virt-manager/virt-viewer on another (FC18), and using TLS to secure the comm's between the hosts. I was able to get virt-manager to connect the the hypervisor host via qemu+tls method, but virt-viewer will not connect (either invoked from the "Show the graphical console" option on virt-manager's VM window, or by invoking virt-viewer directly.) Both fail with a generic error (virt-manager's view console says "viewer connection to hypervisor host got refused or disconnected") but does not give a more explicit error. I did a tcpdump, and the trace does show the client machine connecting to TCP port 16514 on the hypervisor host, which is owned by the libvirtd daemon. From what I can see in the packets from that dump, it looks like the endpoints are exchanging certificate info, but of course the session is encrypted, so can't really see what else is going on... Is there a way someone can give me to debug the communications for either the client or server side? (There's nothing being written to logs as far as I can see.) Thanks, Will

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[libvirt-users] Live external snapshot coalescing
by Skardal, Harald 05 Mar '13

05 Mar '13

On standard Fedora 18 I was attempting blockcommit on a *live* VM, libvirt said it was not supported, so I tried fedora-virt-preview as recommended. We found a problem with qemu 1.4, there seems to be an acknowledged bug, a missing library. On a different system we loaded Fedora 18, and then pulled qemu (1.3) and libvirt (1.0.2) from rawhide. I tried blockcommit with domain shut down, it said must be up. Started the domain, and voila, it seems to have worked. Question: The committed snap file (the one I committed to the image below) is still in there, and virsh snapshot-list lists it. But the base and the upstream snap file has been updated, the upstream snap file points to the base image as per qemu-img info. How/where do I update the metadata so that virsh displays the correct thing? I.e. the committed snapshot should disappear? Is it as simple as removing the committed snap? Do I have to restart anything to get the virsh output correct? Cheers, Harald Skardal, Stratus Technologies.

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[libvirt-users] Fwd: OpenVSwitch and libvirt integration problem at shutdown/reboot
by Ernesto Domato 05 Mar '13

05 Mar '13

Hi everyone, I'm forwarding this mail that I wrote to OpenVSwitch dev list because I think that you could maybe help me a little :-) What did you think about the patch to libvirt that I'm using?. At least, it worked for me :-) Thanks. Ernesto ---------- Forwarded message ---------- From: Ernesto Domato <edomat(a)gmail.com> Date: Mon, Mar 4, 2013 at 2:09 PM Subject: OpenVSwitch and libvirt integration problem at shutdown/reboot To: dev(a)openvswitch.org Hi everyone, this mail is related to a bug report that I did on Debian (#701760) that I wasn't able to resolve yet and want to know if someone has the same problem and how could I fix it. The problem that I'm having is that on shutdown/reboot of the machine that holds the virtual machines that use OVS, the OVS-Switch is going down before libvirt finish to shutdown the VMs. This cause that libvirt can¡t unregister the virtual interface from the OVS-Switch and it hangs the shutdown/reboot process. The only way that I have to solve this at that point is to log in by SSH and restart the OVS-Switch so libvirt can finish unregistering the interfaces and the system continue with the task asked. What I tried too is to patch the libvirt to use the --no-wait flag for ovs-vsctl command that deletes the virtual interface so it doesn't hang when OVS-Switch isn't running. It worked on the sense that the system does shutdown/reboot but next time it boot, the VMs stop responding, I have to delete the virtual interface from OVS-Switch and register it again and then the VM start responding again. I guess that this happens because the virtual interface was never deleted from OVS-DB and when the system boots again there's like an old reference to the virtual interface that provoke this behavior. Have anyone had this problem?, how did you solve it?, what your suggestion for me?. Looking at the manpages, I'll try another patch for libvirt that will delete the interface with the flag --if-exists before adding it back on libvirt start of the VM so, if the OVS-DB already has the interface, it is deleted. If this works, do you think it's a good solution?, or should it be implemented in other ways?. Thanks for all and excuse my english but it's not my native language. Ernesto

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[libvirt-users] Qemu-1.4.0-2 and Qemu-1.4.0-1 is broken on virt-preview and rawhide
by Skardal, Harald 04 Mar '13

04 Mar '13

All, Our testing seems to indicate that Qemu-1.4.0-2 and Qemu-1.4.0-1 is broken on virt-preview and rawhide. I'm getting undefined symbol: usbredirparser_send_start_bulk_receiving when running qemu-system-x86_64 -version.. Do others see this issue? Is there a known solution? Harald Failing cases: ------------------------------------------------------------------------ -------------------------------------- Failed on Qemu-1.4.0-2 ---------------------- [root@node1 ~]# rpm -q --file /usr/bin/qemu-system-x86_64 qemu-system-x86-1.4.0-2.fc18.x86_64 [root@node1 ~]# /usr/bin/qemu-system-x86_64 --version /usr/bin/qemu-system-x86_64: symbol lookup error: /usr/bin/qemu-system-x86_64: undefined symbol: usbredirparser_send_start_bulk_receiving Failed on Qemu-1.4.0-1 ---------------------- [root@localhost ~]# rpm -q --file /usr/bin/qemu-system-x86_64 qemu-system-x86-1.4.0-1.fc18.x86_64 [root@localhost ~]# /usr/bin/qemu-system-x86_64 --version /usr/bin/qemu-system-x86_64: symbol lookup error: /usr/bin/qemu-system-x86_64: undefined symbol: usbredirparser_send_start_bulk_receiving ------------------------------------------------------------------------ -------------------------------------- Passed on Qemu-1.3.0-9 ---------------------- [root@node0 ~]# rpm -q --file /usr/bin/qemu-system-x86_64 qemu-system-x86-1.3.0-9.fc18.x86_64 [root@node0 ~]# /usr/bin/qemu-system-x86_64 --version QEMU emulator version 1.3.0, Copyright (c) 2003-2008 Fabrice Bellard

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[libvirt-users] Secure communication from host to guest
by Shea Levy 02 Mar '13

02 Mar '13

Hi, On boot, I'd like to pass a public key to the VM to use for root ssh logins, and obviously only the user that started the VM on the host should be able to send the key. What's the best way to pass this kind of information into the VM? I thought about using a serial port connected to a fifo on the host, but I'd rather not deal with serial programming if I can avoid it... Thanks, Shea

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[libvirt-users] VM can not start
by Qinghua Cheng 01 Mar '13

01 Mar '13

Hi Experts, I have libvirt 1.0.2 downloaded and build on my RH. And I also downloaded qemu 1.4.0 and build on this machine. When I tried to start my VM ubuntu12, get error messages: error: Failed to start domain ubuntu12 error: internal error Process exited while reading console log output: I have no idea what does this message mean. Could you please help point out what I should do next? Thanks, Conny

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[libvirt-users] Libvirt not creating .vmdk file and .nvram files on vmware esx host
by Nithin Mp 28 Feb '13

28 Feb '13

Hi, I am currently using libvirt API(java api) for creating VMs in esxi host. I am passing commands as follows:(trying from terminal) virsh -c esx://192.168.0.144?no_verify=1 define /home/bm/eee.xml Domain eee defined from /home/bm/eee.xml I have attached the eee.xml file and the eee.vmx from the esxi datastore with this mail. the versions i am using is : virsh # version Compiled against library: libvirt 1.0.0 Using library: libvirt 1.0.0 Using API: ESX 1.0.0 Running hypervisor: ESX 5.0.0 The system i am using is Ubuntu 12.04 LTS 64 bit Please reply me.Waiting for your response. -- *Thanks & Regards* NITHIN.M.P

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[libvirt-users] With no luck with virDomainGetInfo and virDomainMemoryStats for memory usage of a running vm
by 张章 28 Feb '13

28 Feb '13

Hi, all I am trying to get used memory of a running vm using libvirt and then to calculate the memory usage, but with no luck. 1.The used memory returned by virDomainGetInfo is equal to max memory with no virtio balloon driver set. When using virtio balloon driver and setting currentMemory less than memory in the xml, the used memory returned by virDomainGetInfo is nearly equal to currentMemroy. Again, I can't get the memory used by vm. 2. When I turned to virDomainMemoryStats, I can only get two values : Current balloon value and Resident Set Size of the process running the domain. (for kvm 0.14.1 and libvirt 1.0.2) That's not what I want. I only need to know how much memory used by the running vm, so I can calculate the memory usage of this vm. (like the used memory return by cmd "free -m") Any hints? Many thanks! Z. ZhangNational Research Center for intelligent Computing Systems,ICT, Chinese Academy of Sciences

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[libvirt-users] Deleting and coalescing live snapshots
by Skardal, Harald 28 Feb '13

28 Feb '13

All, I have a service that takes new live KVM snapshots Si regularly, keeps a fixed number N (Si ,..,Si-N+1), and therefore needs to delete Si-N in this cycle. Until libvirt includes support for this capability that is said to be available in qemu, what is a safe workflow to delete old live KVM snapshots w/o losing data. Do I need to pause/shut down the VM? The development environment is Fedora 18 with qemu, libvirtd and libvirt upgrades to the more recent stable versions. Harald Skardal, Stratus Technologies.

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[libvirt-users] The accurate CPU usage of a domain?
by 张章 28 Feb '13

28 Feb '13

Hi,all I want to get a relatively accurate cpu usage of a domain. I have a few questions about virDomainGetInfo: struct virDomainInfo{ unsigned char state : //the running state, one of virDomainState unsigned long maxMem :// the maximum memory in KBytes allowed unsigned long memory :// the memory in KBytes used by the domain unsigned short nrVirtCpu :// the number of virtual CPUs for the domain unsigned long long cpuTime : //the CPU time used in nanoseconds } If a domain is assigned to 4 vcpus and my machine has 6 physical cores, then the cpuTime in virDomainInfo should be the sum of cpu time of the 4 vcpus. When I want to calculate the cpu usage, which of the following is more accurate? 1/4 * cpu time / total time or 4/6 * cpu time / total time or just cpu time / total time regardszhangzhang

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[libvirt-users] error when call migrate function "error: invalid argument: qemuDomainMigratePrepare3: unsupported flags (0x200)"
by loic.cloatre＠orange.com 27 Feb '13

27 Feb '13

Hello, I try to migrate a VM and I get this error : loic@loic-VirtualBox:~/workspace/src/build/bin$ ./virsh --connect qemu:///system migrate --live vmUbuntuPartage2CacheWriteBack qemu+ssh://192.168.10x.2x/system --unsafe loic(a)192.168.10x.2x's password: error: invalid argument: qemuDomainMigratePrepare3: unsupported flags (0x200) Does somebody know this error? I am working on windows 7, I have: 1) Virtual box with two vms ubuntu desktop 12.04: "VM1" and "VM40" 2) One shared hard drive build with virtual box: "newDiskSharedFev.vdi" In my VM1: 1) I have build one "vmUbuntuPartage" ubuntu server 12.10 on shared disk with this command: sudo virt-install -n vmUbuntuPartage -r 1500 --disk path=/media/partage/newDiskSharedFev.vdi,bus=virtio,size=4,cache=writeback -c /home/loic/Downloads/ubuntu-12.04.1-server-i386.iso --network network=default,model=virtio --connect=qemu:///system --vnc -v 2) I have download and built libvirt-0.10.0 (I can give configure command if necessary) In my VM40: 1) I install libvirt with apt-get 2) I have mounted shared folder with "newDiskSharedFev.vdi" So, in my VM1 I try to migrate my "vmUbuntuPartage" from VM1 to VM40 and I get error above. Here my configuration file /etc/libvirt/qemu/ vmUbuntuPartage.xml --> I try to change <driver name='qemu' type='raw' cache='none or writeback or writetrough'/> ================  <domain type='qemu'> <name>vmUbuntuPartage</name> <uuid>5d38cf86-d9c5-b0f2-cc03-982a1f18bede</uuid> <memory>1536000</memory> <currentMemory>1536000</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' machine='pc-1.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/media/partage/SharedDiskUbuntu.vdi'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:8b:b1:80'/> <source network='default'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes'/> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> </domain> ================== Loïc Cloâtre _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, France Telecom - Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, France Telecom - Orange is not liable for messages that have been modified, changed or falsified. Thank you.

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[libvirt-users] questions of libvirt's lxc
by Han Yuejuan-B42073 27 Feb '13

27 Feb '13

Hi all, I am trying to init lxc by libvirt instead of using lxc tools. I have several questions as following: software platform: integrating libvirt-0.10.1 to yocto based on sdk1.3 hardwatre platform: p4080ds steps: root@p4080ds:~# cat > container.xml <<EOF <domain type='lxc'> <name>container</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</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>/usr/libexec/libvirt_lxc</emulator> <interface type='network'> <source network='default'/> </interface> <console type='pty' /> </devices> </domain> <EOF root@p4080ds:~# libvirtd -d root@p4080ds:~# virsh --connect lxc:/// define container.xml Domain container defined from container.xml root@p4080ds:~# virsh --connect lxc:/// start container error: Failed to start domain container error: internal error Network 'default' is not active. To resolve this issue I change the container.xml to as below: <domain type='lxc'> <name>container</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</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>/usr/libexec/libvirt_lxc</emulator> <interface type='bridge'> <source network='br0'/> <mac address='00:11:22:34:34:34'/> (I am not sure it will make difference) </interface> <console type='pty' /> </devices> </domain> then error infos as below: root@p4080ds:~# virsh --connect lxc:/// define container.xml error: Failed to define domain from container.xml error: internal error No <source> 'bridge' attribute specified with <interface type='bridge'/> Q1: What an appropriate virtual network is supported by virsh for error mentioned above? Linux container support several types of network such as veth, vlan, macvlan, phys and how to edit different xml file for different network type? Q2: There are two kinds of containers , application container and system container. If using lxc tools, lxc-execute will establish an application container and lxc-create with lxc-start will establish a system container. So with libvirt how to set up these two kinds of containers? by different xml file or by different virsh cmds? Q3: If I want to define a rootfs (such as busybox) for container how I edit the relative xml file? anyone has related infos that can be shared? Q4:Cgroups manage and control resources using for lxc containers. If use libvirt how to realise the similar resource tuning for containers based on PowerPC? There are limited infos at: https://www.berrange.com/posts/2009/12/03/using-cgroups-with-libvirt-and-lx… Regards, Yuejuan

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[libvirt-users] VMs XML difinitions can't be recognized after upgrading to libvirt 0.9.13
by Marwan Tanager 27 Feb '13

27 Feb '13

I used to run many VMs on my Ubuntu 10.04 box. However, after upgrading to Ubuntu 12.10 (and thus, libvirt 0.9.13), The VMs can't be recognized anymore. Nothing appears in the output of 'virsh list --all', nor in virt-manager. When I created a new VM based on a disk image of one of the not-recognized-any-more VMs, a new schema file has been auto-generated, and the new VM now is recognized. So, if this is caused by incompatibility with the old schemas, would the solution be to manually recreate all the VMs by importing their disk images to the newly created VMs, or is there a more intelligent approach? Thanks for your time. Marwan

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[libvirt-users] [libvirt-php] network string name
by Yusof Khalid - FreeBSD / OpenBSD 27 Feb '13

27 Feb '13

Hi list, So this is my first question on this list :) I'm working for my script to get network information for our guest os (Using Xen 3) using PHP libvirt. Just get confused for function libvirt_network_get($res, $name) $name should be network name string as per the doc. What is the value for that ? is it the name in ifconfig list that attach with the guest os e.g vif101 ? Thanks in advance. -- -- 7.2-RELEASE-p6

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[libvirt-users] Routed network w/o libvirt adding iptables rules
by Nils Toedtmann 27 Feb '13

27 Feb '13

Hello In the case of a "routed" libvirt network, is there a way to prevent libvirt from adding *any* iptables rules? Or at least to stop libvirt from inserting its rules at the *top* of the chains (which renders previously inserted rules useless)? I have VPN tunnels connecting VMs with each other and with clients, and the default rules generated by libvirt are not right for my use case. The firewall rulesets i actually need are quite simple. I am very happy to manage them outside libvirt. I am thinking of replacing /sbin/iptables with a dummy, but that is a last ressort which i hope is not necessary. Please advise /nils. PS: See also long standing libvirt issues: * https://bugzilla.redhat.com/show_bug.cgi?id=533193 * https://bugzilla.redhat.com/show_bug.cgi?id=689377

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[libvirt-users] How to add static routes?
by Nils Toedtmann 26 Feb '13

26 Feb '13

Hello i have several libvirt hosts (CentOS6, kvm), each with an internal libvirt "default" network with "forward mode='route'". I have two questions concerning static routes. To give some context: On each of my libvirt hosts there is a VM acting as a OpenVPN-gateway to the other libvirt hosts. [A] How can i add a persistant static route on the libvirt host to one of its guests? Someone had already asked this on this list in 2011 but apperently did not receive an answer [1]. Likewise, i found that a /etc/sysconfig/network-scripts/route-virbr0 does not get applied when libvirt starts its default network. [B] How can i make libvirt's dnsmasq push static routes into the guests? Apperently dnsmasq supports pushing of static routes using DHCP options 33 or 121 [2], e.g. "--dhcp-option=121,x.x.x.x/yy,z.z.z.z". But i did not find how to add that to a libvirt network declaration. I know that if i had [A] working, the host could redirect the IP traffic on behalf of the guests, but i'd like to avoid the resulting extra hop and the flood of ICMP redirects. Please advise. Cheers /nils. [1] https://www.redhat.com/archives/libvirt-users/2011-December/msg00061.html [2] http://tools.ietf.org/html/rfc3442

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[libvirt-users] shutdown a windows guest take ages..... (20- 34 minutes here)
by weber＠zackbummfertig.de 26 Feb '13

26 Feb '13

hi, i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk? i use disk.images on a raid6, but hey, dd shows me it can writes there with 26mb/sec. any ideas what causes these long shutdown times? thanks for any hints, marko

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[libvirt-users] Per-driver Disk Image Type Support
by Shea Levy 25 Feb '13

25 Feb '13

Hello, Where can I find documentation about which formats for disk images each driver supports? In particular, do they all support raw disk images? Thanks, Shea Levy

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[libvirt-users] vda or sda in the guest
by Robert Smol 23 Feb '13

23 Feb '13

Hello, I've used virt-install + kickstart to setup machine. Then I've moved the script to a production machine and in the guest the disk was not 'vda' but 'sda', how is this done? There are differencet vesrions of libvirt between my fedora (tesing system) and gentoo (production system). Robert

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[libvirt-users] Support for Hyper-V
by Hassan Shaik 22 Feb '13

22 Feb '13

Hi, I would like to know if libvirt support Hyper-V deployed in Windows 2012 server. Does libvirt talk to Hyper-V using the REST API provided by Microsoft (where SCVMM & SPF are deployed)? >From the web site, I see that libvirt support only "Hyper-V 2008 R2" Many thanks in advance. Hassan

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[libvirt-users] Migrate VM's to different storage pool?
by Jamie Fargen 22 Feb '13

22 Feb '13

I am searching for directions for using live block migration to copy running vm's to a different storage pool. Example: VM1 running on Host1, the image(s) for VM1 are stored in /var/lib/libvirt/images. I'd like to copy the disk image(s) that VM1 is using to /nfs/images. Without stopping/pausing/powering down the VM. Do you have any examples or documentation of how to accomplish this process? Regards, Jamie Ian Fargen

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[libvirt-users] Host information from libvirt KVM/Xen
by Parakkal, Navin S 17 Feb '13

17 Feb '13

Hi, I'm able to get the CPU utilization metrics from libvirt for the guests (VM's) remotely . Is it possible to get the Host Cpu stat's through libvirt ? I didn't find any information regarding the host cpu cycles and memory utilization to collect them remotely. Libvirt is installed on all the hosts. Regards, Navin

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[libvirt-users] help
by vishal upadhyay 14 Feb '13

14 Feb '13

Hi All, I a very new user of libvirt API. -- Thanks and Regards vishal Upadhyay Voice:-08904713858

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