- Users - libvirt List Archives

[libvirt-users] Import/Export Support
by Mitchell Hashimoto 04 Oct '10

04 Oct '10

Hello, I'm looking into using libvirt in the near future, however an important part of our workflow is the ability to import and export virtual machines (in VirtualBox). Does libvirt provide an easy way to do this? I couldn't find anything obvious on the API reference. Thanks, Mitchell

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[libvirt-users] OVF => XML?
by Mitchell Hashimoto 02 Oct '10

02 Oct '10

Hello, Does libvirt provide any easy way to convert an OVF to libvirt XML specification? I noticed "virt-convert" but I'm not sure what the status of that project is or if this is officially supported. Has anyone successfully done this before and if so, what troubles did you run into? Thanks, Mitchell

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[libvirt-users] Python XML parsing of domain descriptions?
by Stanley, Jon [Tech] 02 Oct '10

02 Oct '10

Does anyone know of a way to parse the libvirt XML into usable python data structures? Ideally, it would be something like foo['domain']['devices']['bridge'][0]['target'] or something of the sort. What I'm looking to accomplish is to figure out which tap interface goes with a specific domain. I'm not keen on parsing XML to get that mapping, is there a better way to do it without parsing XML?

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[libvirt-users] undefining and redefining a Domain
by Roberto Attias (rattias) 02 Oct '10

02 Oct '10

<resending as I don't think I was in the mailing list yet when I sent first time... apologies if you receive this twice> Hello, I'm facing some strange behavior, and I hope you can provide a clarification. Consider the following code: virDomainPtr dom = virDomainLookupByName(virt, domain_name); if (dom) { printf("domain already defined...\n"); if (virDomainUndefine(dom)) printf("...unable to undefine!!!\n"); else { printf("...undefined."); free(dom); } } dom = virDomainDefineXML(virt, SOME_XML); if (dom != NULL) { const char *name = virDomainGetName(dom); printf("NAME IS NOW: %s\n", name); } else printf("dom is NULL!\n"); When executed the first time, the code correctly defines the domain, and prints: defining domain test2-vm libvir: QEMU error : Domain not found: no domain with matching name 'test2-vm' NAME IS NOW: test2-vm If executed a second time with the same SOME_XML when the domain is already defined, it prints: defining domain test2-vm domain already defined... libvir: Domain error : invalid domain pointer in virDomainGetName undefining......undefined.NAME IS NOW: (null) Not only the name is null, but the domain can't be started. What is the correct way to undefined programmatically a domain that is already defined? Why is the second virDomainDefineXML() returining a pointer (as opposed to null), but the pointed object seem to be invalid? Thanks, Roberto

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[libvirt-users] how to programmatically undefine and redefine a Domain?
by Roberto Attias (rattias) 02 Oct '10

02 Oct '10

Hello, I'm facing some strange behavior, and I hope you can provide a clarification. Consider the following code: virDomainPtr dom = virDomainLookupByName(virt, domain_name); if (dom) { printf("domain already defined...\n"); if (virDomainUndefine(dom)) printf("...unable to undefine!!!\n"); else { printf("...undefined."); free(dom); } } dom = virDomainDefineXML(virt, SOME_XML); if (dom != NULL) { const char *name = virDomainGetName(dom); printf("NAME IS NOW: %s\n", name); } else printf("dom is NULL!\n"); When executed the first time, the code correctly defines the domain, and prints: defining domain test2-vm libvir: QEMU error : Domain not found: no domain with matching name 'test2-vm' NAME IS NOW: test2-vm If executed a second time with the same SOME_XML when the domain is already defined, it prints: defining domain test2-vm domain already defined... libvir: Domain error : invalid domain pointer in virDomainGetName undefining......undefined.NAME IS NOW: (null) Not only the name is null, but the domain can't be started. What is the correct way to undefined programmatically a domain that is already defined? Why is the second virDomainDefineXML() returining a pointer (as opposed to null), but the pointed object seem to be invalid? Thanks, Roberto

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[libvirt-users] Can't plug usb device
by Jesus Urroa 01 Oct '10

01 Oct '10

Hi I'm trying to hotplug an usb device into kvm but the device is not attached this is the definition: cat kingston.xml <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x1131' /> <product id='0x1001' /> </source> </hostdev> the attach and detach commands virsh attach-device ShadowFax kingston.xml El dispositivo fue asociado exitosamente virsh detach-device ShadowFax kingston.xml El dispositivo fue desmontado exitosamente which means the device is succesfully attached but is never seen in the vm The records in /var/log/messages: Sep 30 21:34:57 Balrog libvirtd: 21:34:57.288: warning : qemudParsePCIDeviceStrs:1411 : Unexpected exit status '1', qemu probably failed Sep 30 21:35:07 Balrog libvirtd: 21:35:07.803: warning : qemudParsePCIDeviceStrs:1411 : Unexpected exit status '1', qemu probably failed Sep 30 21:35:07 Balrog libvirtd: 21:35:07.805: error : qemuSecurityDACRestoreSecurityFileLabel:84 : cannot resolve symlink /dev/bus/usb/000/000: No such file or directory Sep 30 21:35:07 Balrog libvirtd: 21:35:07.806: warning : SELinuxRestoreSecurityFileLabel:371 : cannot resolve symlink /dev/bus/usb/000/000: No such file or directory Sep 30 21:35:07 Balrog libvirtd: 21:35:07.806: warning : qemudDomainDetachHostDevice:8930 : Failed to restore host device labelling from /var/log/libvirt/qemu/vm.log husb: open device 1.7 husb: config #1 need -1 husb: 3 interfaces claimed for configuration 1 husb: grabbed usb device 1.7 this one keeps repeating even after the device is detached that is today but yesterday showed only once or twice at each try and when detaching this came out: Warning: tried to detach unattached usb device USB Host Device Im using fedora 13 with: libvirt-0.8.2-1.fc13.x86_64 libvirt-client-0.8.2-1.fc13.x86_64 qemu-system-x86-0.12.5-1.fc13.x86_64 Can someone help me please Thanks

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[libvirt-users] Remote access form windows - Java bindings
by Gandhiraj Natarajan 01 Oct '10

01 Oct '10

Hi I am developing tool to collect information on XenServer which is on Opensuse 11. I am using libvirt-0.4.6.jar and and jna-3.2.4 jar files. I tried to connect from Remote system(Windows) to server, but could not get the connection object. Any configuration needs to be done for remote access ? conn = new Connect("xen+tcp://192.168.10.22/"); it shows the exception Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'virt': The specified module could not be found. at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:164) at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:237) at com.sun.jna.Library$Handler.<init>(Library.java:140) at com.sun.jna.Native.loadLibrary(Native.java:374) at com.sun.jna.Native.loadLibrary(Native.java:359) at org.libvirt.jna.Libvirt.<clinit>(Unknown Source) at org.libvirt.Connect.<clinit>(Unknown Source) at LibvirtCon.main(LibvirtCon.java:29) Help me Regards Gandhiraj Natarajan

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[libvirt-users] Copy the UUID into the image file
by Ahmad Kamil Abdul Hamid 30 Sep '10

30 Sep '10

Hi, Is it possible to copy the UUID defined in the XML domain file into the image file? For example, the UUID defined in ubuntu.xml can appear, say, under /proc/ directory of the ubuntu virtual machine? Thanks. Kamil.

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[libvirt-users] Importing images
by kevin gilbert 29 Sep '10

29 Sep '10

I have a dual boot machine and would love to import the Windows image into a VM. I've checked the documentation and Google and have not seen anything mentioned about this. Is it possible? Cheers, Kev

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[libvirt-users] network configuration for ipv6 setup
by Martin Jürgens 29 Sep '10

29 Sep '10

Hi, I am currently using IPv4 with the following network configuration which has worked fine for some months now: <network> <name>net0</name> <uuid>fa0c1c69-da82-1bef-fcb2-4c336bbexxxx</uuid> <forward dev='eth0' mode='route'/> <bridge name='virbr0' stp='on' forwardDelay='0' /> <ip address='78.47.xx.xx' netmask='255.255.255.xxx'> </ip> </network> The company hosting my server is now providing /64-IPv6-subnets to its customers - thus I'd like to take advantage of this and supply my guests with IPv6-subnets. Is it possible to do this without changing much of my setup (i.e. just changing some configuration files?)? I am using libvirt 0.6.3. Thanks, Martin

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[libvirt-users] Question about use libvirt
by Marcela Castro León 29 Sep '10

29 Sep '10

Hello: For a new system to develop, I need to know if I can use libvirt for to get (listen) the information that pass trought the lan (vlan) of the each VM. Thank you, very much. Marcela.

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[libvirt-users] Clock Sources under RHEL/Centos 5.x with KVM and libvirt
by Steven Ellis 28 Sep '10

28 Sep '10

I'm wondering under what circumstances the kvm-clock source is exposed to a guest. I've got a bunch of KVM servers running Centos 5.5 and some of the guests have are defaulting to jiffies or apic whilst some are picking up kvm-clock. These guests are a mix of 32bit and 64bit Centos 5.5. Looking at the virtual machine definition file there doesn't appear to be a difference between the guests with kvm-clock and those without. Any where else to look, or what configuration will expose kvm-clock to a guest. Steve -- Steven Ellis - Bulletin.Net Inc - http://www.bulletin.net

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[libvirt-users] Unable to change guest vnc port in libvirt
by mmv＠eholod.ru 26 Sep '10

26 Sep '10

Hi all! I set in XML <graphics type='vnc' port='5901'/> But Libvirt assign first free port from 5900 and take 5900. Anb block access to host console vnc (tightvnc-server-module). Console access need not frequently. I do # service libvirt-guests stop;killall Xorg; service libvirt-guests start But it dirty hack Im use Fedora 13 # env LANG=en_US virsh version Compiled against library: libvir 0.8.2 Using library: libvir 0.8.2 Using API: QEMU 0.8.2 Running hypervisor: QEMU 0.12.5 I prefer possiblity to define for libvirt different base port for |autoport|. 5910 for example. Somebody know solution?

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[libvirt-users] Dormant state
by Paul Oldfield 25 Sep '10

25 Sep '10

Is there an easy way to get a virtual server into the dormant state without waiting? QEMU command or libvirt cim call? Paul Oldfield 3605 Hwy 52 North Rochester MN, 55901 Tel: 507 253 1750 TieLine: 553-1750

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[libvirt-users] Question on CPU pinning in Python
by Stanley, Jon [Tech] 24 Sep '10

24 Sep '10

Looking at the python API, once I have a domain object I can call domain.pinVcpu to pin a specific vcpu to a physical CPU. I found http://www.mail-archive.com/libvir-list@redhat.com/msg04562.html which mentioned some changes to the C API in the Python implementation, and was wondering if my understanding is correct. Say that I have a host system with 16 logical CPU's, 0-15. If I wanted to pin vcpu1 of a domain to CPUs 2 and 4, I would pass: domain.pinVcpu(1, (False, False, True, False, True, False....[and so on til I have 16 things])) In other words, pinVcpu accepts as arguments the vCPU that I wish to act on, and a 16 (or however many CPU's are present on the host) item tuple of True/False values, in the same order as the CPU's I wish to mask (for example, item 0 of the tuple represents CPU0), True meaning that the vCPU thread is allowed to run there, and False meaning that it is not. Just looking to confirm that my understanding of this call is correct. Thanks! -Jon

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[libvirt-users] libvirt support for sheepdog file system
by Narendra Prasad Madanapalli 23 Sep '10

23 Sep '10

Hi Everyone, I am planning to extend libvirt to support sheepdog for qemu/kvm and found that storage code is placed in src/storage. Storing files in sheepdog is independent of file system and we just need to specify vm-name on qemu command ine. Here are the following comands used for creating and running a VM using qemu qemu-img create sheepdog:MyImage001 25G qemu-system-x86_64 sheepdog:MyImage001 I would appreciate if any one provide pointers on incorporating sheepdog functionality to libvirt. Thanks, Narendra.

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Re: [libvirt-users] access VMX config on esxi with virsh
by frank dirks 23 Sep '10

23 Sep '10

Hi, you are right - the problem is specific to only that one vmx file - for other virtual machines dumpxml is working, as i found out. i am using esxi 4.1.0 and virsh 0.8.4. the machine was created using vsphere client, and was cloned and renamed afterwards - maybe that was the problem ... regards, frank > > Hm, that's strange. The .vmx config seems to be malformed. > > What libvirt version and what ESXi version do you use? > > How did you create the vmtest.local guest and can you start it? > > Could you show us the original .vmx config file? You can get if by > opening https://esx1.local/folder/ in a web browser and clicking > through the directory tree until you get to vmtest.local.vmx. > > Matthias -- Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief! Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail

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[libvirt-users] libvirt and virsh-mgr on guest VM
by ccmail111 22 Sep '10

22 Sep '10

Hi, Is it possible to run virsh-mgr (or such libvirt client tools) on guest VM for managing and monitoring other VMs on host ? Any pointers/caveats/docs is appreciated ! Thx. CM.

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[libvirt-users] Configuring libvirt for one driver and XMLRPC issues
by Jonathan Kelley 22 Sep '10

22 Sep '10

Hello, I am trying to run ./configure --with-one --with-esx but I get the following error: checking pkg-config is at least version 0.9.0... yes checking for XMLRPC... no configure: error: You must install XMLRPC-C >= 1.14.0 to compile libvirt ONE driver However I have downloaded xmlrpc-c-client and built from sources version 1.16.31 root@sa251:~/libvirt-0.8.4# xmlrpc-c-config --version 1.16.31 root@sa251:~/libvirt-0.8.4# xmlrpc-c-config --features c++ abyss-server curl-client What am I missing here? Thanks, Jon

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Re: [libvirt-users] Booting "real" windows
by Premysl Vohnout 22 Sep '10

22 Sep '10

And is there any virtualization technology supported by libvirt which will allow it? Dne 21.9.2010 17:40, E.T. Anderson napsal(a): > It /might/ be technically possible to boot the system, but I'd expect > it to blue-screen on you. KVM would present slightly different > hardware to the Windows system and Windows customizes itself for your > hardware on install and can't change much. > > It /is/ possible to install a VM to a physical partition, but you > would have to reinstall Windows as a virtual machine. You then would > have your current problem in reverse and would only be able to boot > the partition virtually. > > On Tue, Sep 21, 2010 at 7:29 AM, Premysl Vohnout <vohnout(a)ccss.cz > <mailto:vohnout@ccss.cz>> wrote: > > Hi all, > is it possible to boot using libvirt + kvm real installation of > windows 7? I have dual boot sda1 - windows, sda2-linux and I want > to boot this sda1 > > cheers, > Premysl Vohnout > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com <mailto:libvirt-users@redhat.com> > https://www.redhat.com/mailman/listinfo/libvirt-users > > > > > -- > *E.T. Anderson* > firebringer11(a)gmail.com <mailto:firebringer11@gmail.com> > firebringer11(a)hotmail.com <mailto:firebringer11@hotmail.com> > (253) 347 - 5903

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[libvirt-users] correction
by Glynn D. Reynolds 22 Sep '10

22 Sep '10

I have corrected the error! Error: Sep 18 13:53:46 gdrenterprise libvirtd: 13:53:46.116: error : virInterfaceDefParseMtu:141 : XML description for interface mtu value is improper is not well formed or invalid To correct this error you will have to remove or correct the entry of virtual IP's added to /etc/sysconfig/network-scripts/ by the virtual application. Theory! I suspect that if you add the network interface with application that have non root privileges or you have configured /etc/access.conf. In additional to running selinix, root could be the one that may have the authority to add the network interface configuration. -- Glynn D. Reynolds <glynnreynolds123(a)gmail.com> GDRENTERPRISE

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[libvirt-users] XML
by Glynn D. Reynolds 22 Sep '10

22 Sep '10

Hi! I am new to libvirt. I would like to know where would you make the change to correct this error. I am not sure to add an entry in /etc/libvirt/network/default.xml or not. Could you provide ne with a current link to the documentation that will provide me information to correct this information. Glynn error : virInterfaceDefParseMtu:141 : XML description for interface mtu value is improper is not well formed or invalid -- Glynn D. Reynolds <glynnreynolds123(a)gmail.com> GDRENTERPRISE

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[libvirt-users] Is it possible to live migrate guest OS'es between different versions of kvm/qemu-kvm with libvirt?
by Nils Cant 22 Sep '10

22 Sep '10

Hi, I currently have a couple of Debian KVM servers with all a different version of kvm or qemu-kvm. I can live migrate a guest OS from one server to the other just fine, as long as the version of qemu-kvm is the same. However, when I try to migrate a guest to a server running a newer (or older) version of qemu-kvm, I run into problems. I think this is because the xml configuration differs slightly between version. For example, if I try to migrate from a server running qemu-kvm 0.11.0 to one running qemu-kvm 0.12.4, I get the following error: virt01:~# virsh migrate --live testserver qemu+ssh://192.168.1.7/system error: internal error unable to reserve PCI address 0:0:3 When migrating from kvm 85 to qemu-kvm 0.11.0: virt02:~# virsh migrate --live testserver qemu+ssh://192.168.1.2/system error: Unknown failure Migrating one from 0.12.4 to 0.11.0 just completely breaks libvirt, forcing me to kill -9 libvirtd and the kvm instance, etc. I believe this is caused in part because different versions of qemu-kvm need different xml configurations. To run my testserver on 0.12.4 for example, I need to delete the lines with the PCI id's, just to be able to start it. So, is there a way to make this work? Perhaps tell libvirt to not send the config file when doing a live migrate, and use the xml in /etc/libvirt/qemu instead somehow? Thanks in advance, Nils

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[libvirt-users] Query regarding Xen_ComputerSystem
by CB, Anantha Padmanabhan 22 Sep '10

22 Sep '10

Hi, Libvirt provides classes such as Xen_ComputerSystem, Xen_Processor etc., in order to build applications using libvirt-api which can interact with the Xen Hypervisor. I would like to know what are the corresponding classes for the KVM hypervisor, so that I can use libvirt-cim to communicate with the hypervisor. Would it be Kvm_ComputerSystem or Qemu_Computersystem? Any help in this regard would be of great help. Thanking you. Regards Ananth

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[libvirt-users] Booting "real" windows
by Premysl Vohnout 22 Sep '10

22 Sep '10

Hi all, is it possible to boot using libvirt + kvm real installation of windows 7? I have dual boot sda1 - windows, sda2-linux and I want to boot this sda1 cheers, Premysl Vohnout

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