October 2010 - Users - Libvirt List Archives

[libvirt-users] Updates to cucmber-vhost - guineapigs wanted! :)

by Matthew Macdonald-Wallace

Hi all, For those of you that are using cucumber for Continuous Integration or similar I've created a set of steps that enable you to use cobbler and cucumber to auto-provision using Libvirt. I've just made some changes to the code however I don't have access to all the hardware/software required to test it fully. If you are able to, please check out the code from http://tinyurl.com/virtcuke (my github repo) and test, posting bugs against the project. Thanks in advance, Matt

13 years, 9 months

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[libvirt-users] virt-xml-validate b0rked?

by Stanley, Jon [Tech]

It seems that virt-xml-validate doesn't validate what *has* to be valid XML, that generated by virsh dumpxml against a running domain: [root@etc752365a ~]# virsh list Id Name State ---------------------------------- 2 rhel55 running 3 rhel53 running [root@etc752365a ~]# virsh dumpxml rhel55 > foo.xml [root@etc752365a ~]# virt-xml-validate foo.xml foo.xml:8: element type: Relax-NG validity error : Invalid attribute arch for element type foo.xml:9: element boot: Relax-NG validity error : Element os failed to validate content foo.xml:8: element type: Relax-NG validity error : Error validating value foo.xml:8: element type: Relax-NG validity error : Element type failed to validate content foo.xml:1: element domain: Relax-NG validity error : Invalid sequence in interleave foo.xml:1: element domain: Relax-NG validity error : Element domain failed to validate content foo.xml fails to validate Is there something that I'm doing wrong here? This is the libvirt that comes with RHEL5.5

13 years, 9 months

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[libvirt-users] Anyone has new libvirt java binding jar, i want the latest one. i dont have the build env at my end.

by Ravi Pawar

-- Thanks & Regards Ravi Pawar

13 years, 9 months

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[libvirt-users] Import/Export Support

by Mitchell Hashimoto

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

13 years, 9 months

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[libvirt-users] OVF => XML?

by Mitchell Hashimoto

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

13 years, 10 months

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[libvirt-users] Python XML parsing of domain descriptions?

by Stanley, Jon [Tech]

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?

13 years, 10 months

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[libvirt-users] undefining and redefining a Domain

by Roberto Attias (rattias)

<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

13 years, 10 months

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[libvirt-users] how to programmatically undefine and redefine a Domain?

by Roberto Attias (rattias)

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

13 years, 10 months

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[libvirt-users] Can't plug usb device

by Jesus Urroa

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

13 years, 10 months

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Users October 2010