- Users - libvirt List Archives

[libvirt-users] libvirt connections
by brandlk＠mathematik.uni-marburg.de 31 Mar '10

31 Mar '10

Hello, I'm working with libvirt version 0.7.7 and encountered some problems with ssh connections to the xen hypervisor: - if the hypervisor is not running libvirt.open("xen+ssh://host") doesn't time out put keeps trying to connect to host on port 8000. I've tried with the following test program: try: conn = libvirt.open("xen+ssh://host") except: print "failed" sys.exit(1) However: after aborting the program with Ctrl-C I get the exception. - I want to close all libvirt connections at the end, but closing the connections does not close the ssh - nc connections libvirt opens in the background to talk to the hypervisor. I have to manually delete all domain objects as well to get the pending ssh - nc connections closed. I can keep on using the domain object, even if I closed the connection before. Is this behaviour intended? Any help would be great. K. Haselhorst

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[libvirt-users] Vserver patch for Libvirt
by Chaitra Gorantla 31 Mar '10

31 Mar '10

Hi all, I am using libvirt for managing KVM. I would also like to manage Vserver also using libvirt. Is there any patch available for vserver ? When will libvirt relase official patch for vserver? Thanks, Chaitra ________________________________ This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system. ______________________________________________________________________

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[libvirt-users] Attach-interface vs attach-device
by steven765＠yahoo.com 31 Mar '10

31 Mar '10

Working with the two commands there's a noticeable difference in the time redhat takes to detect interfaces using attach-interface vs attach-device? About 5-8 seconds using attach interface, and near instant with attach-device. That little bit aside, I'm trying to find a way to 'unplug' a VM without actually removing the interface. The easy fix is to attach it without adding the tap interface to mybridge, but attach device and interface do not allow this. Looking in the source for libvirt I found the InterfacesStartmodeDefFormat however it seems that virsh doesn't export this option. Maybe this just needs to be implemented? Might anyone have insights as to the best method to pursue? I'm willing to do the leg work but I'm just starting to look into how the sources are laid out and that's going to take a bit. Pointers are appreciated. Thanks in advance, Steve

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[libvirt-users] CfP with Extended Deadline 5th Workshop on Virtualization in High-Performance Cloud Computing (VHPC'10)
by Michael Alexander 31 Mar '10

31 Mar '10

Apologies if you received multiple copies of this message. ================================================================= CALL FOR PAPERS 5th Workshop on Virtualization in High-Performance Cloud Computing VHPC'10 as part of Euro-Par 2010, Island of Ischia-Naples, Italy ================================================================= Date: August 31, 2010 Euro-Par 2009: http://www.europar2010.org/ Workshop URL: http://vhpc.org SUBMISSION DEADLINE: Abstracts: April 4, 2010 (extended) Full Paper: June 19, 2010 (extended) Scope: Virtualization has become a common abstraction layer in modern data centers, enabling resource owners to manage complex infrastructure independently of their applications. Conjointly virtualization is becoming a driving technology for a manifold of industry grade IT services. Piloted by the Amazon Elastic Computing Cloud services, the cloud concept includes the notion of a separation between resource owners and users, adding services such as hosted application frameworks and queuing. Utilizing the same infrastructure, clouds carry significant potential for use in high-performance scientific computing. The ability of clouds to provide for requests and releases of vast computing resource dynamically and close to the marginal cost of providing the services is unprecedented in the history of scientific and commercial computing. Distributed computing concepts that leverage federated resource access are popular within the grid community, but have not seen previously desired deployed levels so far. Also, many of the scientific datacenters have not adopted virtualization or cloud concepts yet. This workshop aims to bring together industrial providers with the scientific community in order to foster discussion, collaboration and mutual exchange of knowledge and experience. The workshop will be one day in length, composed of 20 min paper presentations, each followed by 10 min discussion sections. Presentations may be accompanied by interactive demonstrations. It concludes with a 30 min panel discussion by presenters. TOPICS Topics include, but are not limited to, the following subjects: - Virtualization in cloud, cluster and grid HPC environments - VM cloud, cluster load distribution algorithms - Cloud, cluster and grid filesystems - QoS and and service level guarantees - Cloud programming models, APIs and databases - Software as a service (SaaS) - Cloud provisioning - Virtualized I/O - VMMs and storage virtualization - MPI, PVM on virtual machines - High-performance network virtualization - High-speed interconnects - Hypervisor extensions - Tools for cluster and grid computing - Xen/other VMM cloud/cluster/grid tools - Raw device access from VMs - Cloud reliability, fault-tolerance, and security - Cloud load balancing - VMs - power efficiency - Network architectures for VM-based environments - VMMs/Hypervisors - Hardware support for virtualization - Fault tolerant VM environments - Workload characterizations for VM-based environments - Bottleneck management - Metering - VM-based cloud performance modeling - Cloud security, access control and data integrity - Performance management and tuning hosts and guest VMs - VMM performance tuning on various load types - Research and education use cases - Cloud use cases - Management of VM environments and clouds - Deployment of VM-based environments PAPER SUBMISSION Papers submitted to the workshop will be reviewed by at least two members of the program committee and external reviewers. Submissions should include abstract, key words, the e-mail address of the corresponding author, and must not exceed 10 pages, including tables and figures at a main font size no smaller than 11 point. Submission of a paper should be regarded as a commitment that, should the paper be accepted, at least one of the authors will register and attend the conference to present the work. Accepted papers will be published in the Springer LNCS series - the format must be according to the Springer LNCS Style. Initial submissions are in PDF, accepted papers will be requested to provided source files. Format Guidelines: http://www.springer.de/comp/lncs/authors.html Submission Link: http://edas.info/newPaper.php?c=8553 IMPORTANT DATES April 4 - Abstract submission due (extended) May 19 - Full paper submission (extended) July 14 - Acceptance notification August 3 - Camera-ready version due August 31 - September 3 - conference CHAIR Michael Alexander (chair), scaledinfra technologies GmbH, Austria Gianluigi Zanetti (co-chair), CRS4, Italy PROGRAM COMMITTEE Padmashree Apparao, Intel Corp., USA Volker Buege, University of Karlsruhe, Germany Roberto Canonico, University of Napoli Federico II, Italy Tommaso Cucinotta, Scuola Superiore Sant'Anna, Italy Werner Fischer, Thomas Krenn AG, Germany William Gardner, University of Guelph, Canada Wolfgang Gentzsch, DEISA. Max Planck Gesellschaft, Germany Derek Groen, UVA, The Netherlands Marcus Hardt, Forschungszentrum Karlsruhe, Germany Sverre Jarp, CERN, Switzerland Shantenu Jha, Louisiana State University, USA Xuxian Jiang, NC State, USA Kenji Kaneda, Google, Japan Yves Kemp, DESY Hamburg, Germany Ignacio Llorente, Universidad Complutense de Madrid, Spain Naoya Maruyama, Tokyo Institute of Technology, Japan Jean-Marc Menaud, Ecole des Mines de Nantes, France Anastassios Nano, National Technical University of Athens, Greece Oliver Oberst, Karlsruhe Institute of Technology, Germany Jose Renato Santos, HP Labs, USA Borja Sotomayor, University of Chicago, USA Yoshio Turner, HP Labs, USA Kurt Tuschku, University of Vienna, Austria Lizhe Wang, Indiana University, USA Chao-Tung Yang, Tunghai University, Taiwan DURATION: Workshop Duration is one day. GENERAL INFORMATION The workshop will be held as part of Euro-Par 2010, Island of Ischia-Naples, Italy. Euro-Par 2010: http://www.europar2010.org/

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[libvirt-users] how-to doc for svirt/SELinux enabling
by Jonathan M Barney 30 Mar '10

30 Mar '10

Anyone have a pointer or some documentation or a how to enable svirt support in RHEL 5.4 using libvirt 6.3 and KVM/QEMU? Thanks Jonathan

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Re: [libvirt-users] Problem attaching device
by steven765＠yahoo.com 26 Mar '10

26 Mar '10

Thanks, but problem still persists. I actually fat fingered entering it the first time The xmlfile really is: <?xml version="1.0"?> <interface type="network"> <mac address="52:54:00:5c:fe:a8"/> <source network="default"/> <target dev="vnet1"/> </interface> I ran xmllint and it just says no DTD specified, however this works perfectly if i use the attach-device command in virsh. I tired it both with and without the first line version=1.0 I try running it through python and boom, is there something else I'm missing? I can't find any documentation about the overall libvirt xml schema. Thanks again, Steve --- On Thu, 3/25/10, Daniel Veillard <veillard(a)redhat.com> wrote: > From: Daniel Veillard <veillard(a)redhat.com> > Subject: Re: [libvirt-users] Problem attaching device > To: steven765(a)yahoo.com > Cc: "Matthias Bolte" <matthias.bolte(a)googlemail.com>, libvirt-users(a)redhat.com > Date: Thursday, March 25, 2010, 9:18 AM > On Wed, Mar 24, 2010 at 11:18:10PM > +0100, Matthias Bolte wrote: > > 2010/3/24 <steven765(a)yahoo.com>: > > Your XML is really not well formed. This > > > > <source network-'default'/> > > > > should be > > > > <source network='default'/> > > > > > target dev='vnet1'/> > > > > And you miss a < before the word target: > > > > target dev='vnet1'/> > > > > should be > > > > <target dev='vnet1'/> > > > > > </interface> > > > > > > I've tired giving it the full path still no > luck. > > > Thanks in advance, > > use xmllint to check XML instances if you're not > sure > > xmllint net.xml > > Daniel > > -- > Daniel Veillard | libxml Gnome XML XSLT > toolkit http://xmlsoft.org/ > daniel(a)veillard.com > | Rpmfind RPM search engine http://rpmfind.net/ > http://veillard.com/ | virtualization library http://libvirt.org/ >

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[libvirt-users] Problem attaching device
by steven765＠yahoo.com 25 Mar '10

25 Mar '10

I keep getting an error when I try to attach a device in the libvirt api through python The python code is: conn=libvirt.open('qemu:///system') dom = conn.lookupByName("fedoratest") if dom.info()[0]==1: dom.attachDevice('net.xml') And I keep getting: "libvirtError: XML description not well formed or invalid The xml is a simple network card that works fine in virsh. It is just: #cat net.xml <interface type='network'> <mac address='52:54:00:00:fe:5c'/> <source network-'default'/> target dev='vnet1'/> </interface> I've tired giving it the full path still no luck. Thanks in advance,

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[libvirt-users] Libvirt using ssh
by Marco Mornati 23 Mar '10

23 Mar '10

Hello, I'm looking that using libvirt Java library with ssh, when connection is closed the ssh process used as connection to hyperisor is not closed. Is there a different way than close invoking to kill that process? If not maybe there is something to fix in java porting. Let me know Bye Marco

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[libvirt-users] Migrating domains across nodes
by Sagar Dixit 23 Mar '10

23 Mar '10

Hi, I am exploring the migration APIs and was curious to know if I can use them with LXC containers for live migration from one node to another. If not LXC, then can I use them with OpenVZ containers ? If yes, what would be the general steps involved. Thanks, Sagar

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[libvirt-users] need help on working with libvirt+virtualbox
by Madhusudhan sunkara 22 Mar '10

22 Mar '10

Hi all, i am trying to create virtual box using libvirt , following is xml i tried to use following xml (followed example in libvirt site . http://libvirt.org/drvvbox.html) <domain type='vbox'> <name>vboxtest</name> <os> <type>hvm</type> <boot dev='hd'/> <boot dev='cdrom'/> </os> <memory>393216</memory> <vcpu>1</vcpu> <features> <acpi/> </features> <devices> <disk type='file' device='cdrom'> <source file=''/> <target dev='hdc'/> <readonly/> </disk> <disk type='file' device='disk'> <source file='/d1/vir_box/ub.vdi'/> <target dev='hdd'/> </disk> <interface type='bridge'> <source bridge='eth0'/> <mac address='00:15:C5:ED:63:E6'/> </interface> <interface type='user'> <mac address='00:15:C5:ED:63:E6'/> <model type='Am79C973'/> </interface> <parallel type='dev'> <source path='/dev/pts/1'/> <target port='0'/> </parallel> <parallel type='dev'> <source path='/dev/pts/2'/> <target port='1'/> </parallel> <serial type="dev"> <source path="/dev/ttyS0"/> <target port="0"/> </serial> </devices> </domain> now i have few questions/doubts on the xml (i have working vdi file which is created using GUI and has ubuntu installed , i just want to start that using another machine ) as soon as i try following code i am getting segfault , i am suspecting some problem with xml input import libvirt conn=libvirt.open('vbox:///session') xmldesc = <above string> dom=conn.createLinux(xmldesc,0) Segmentation fault in my home directory/Machines xml file is created <?xml version="1.0"?> <VirtualBox xmlns="http://www.innotek.de/VirtualBox-settings" version="1.9-linux"> <Machine uuid="{9e37e287-67e3-ca78-5af0-9c38f14de49e}" name="vboxtest" OSType="Other" lastStateChange="2010-03-22T10:29:18Z" aborted="true"> <Hardware version="2"> <CPU count="1"> <HardwareVirtEx enabled="true" exclusive="true"/> <HardwareVirtExNestedPaging enabled="true"/> <HardwareVirtExVPID enabled="true"/> <PAE enabled="false"/> </CPU> <Memory RAMSize="384"/> <Boot> <Order position="1" device="Floppy"/> <Order position="2" device="DVD"/> <Order position="3" device="HardDisk"/> <Order position="4" device="None"/> </Boot> <Display VRAMSize="8" monitorCount="1" accelerate3D="false" accelerate2DVideo="false"/> <RemoteDisplay enabled="false" port="3389" authType="Null"/> <BIOS> <ACPI enabled="true"/> <IOAPIC enabled="false"/> <Logo fadeIn="true" fadeOut="true" displayTime="0"/> <BootMenu mode="MessageAndMenu"/> <TimeOffset value="0"/> <PXEDebug enabled="false"/> </BIOS> <USBController enabled="false" enabledEhci="false"/> <Network> <Adapter slot="0" enabled="false" MACAddress="080027F53A84" cable="true" speed="0" type="Am79C973"/> <Adapter slot="1" enabled="false" MACAddress="080027EE31BD" cable="true" speed="0" type="Am79C973"/> <Adapter slot="2" enabled="false" MACAddress="080027CE9DA5" cable="true" speed="0" type="Am79C973"/> <Adapter slot="3" enabled="false" MACAddress="080027D86B0D" cable="true" speed="0" type="Am79C973"/> <Adapter slot="4" enabled="false" MACAddress="080027DAA33F" cable="true" speed="0" type="Am79C973"/> <Adapter slot="5" enabled="false" MACAddress="08002734F6E6" cable="true" speed="0" type="Am79C973"/> <Adapter slot="6" enabled="false" MACAddress="08002747D785" cable="true" speed="0" type="Am79C973"/> <Adapter slot="7" enabled="false" MACAddress="080027C22A98" cable="true" speed="0" type="Am79C973"/> </Network> <UART> <Port slot="0" enabled="false" IOBase="0x3f8" IRQ="4" hostMode="Disconnected"/> <Port slot="1" enabled="false" IOBase="0x3f8" IRQ="4" hostMode="Disconnected"/> </UART> <LPT> <Port slot="0" enabled="false" IOBase="0x378" IRQ="4"/> <Port slot="1" enabled="false" IOBase="0x378" IRQ="4"/> </LPT> <AudioAdapter controller="AC97" driver="ALSA" enabled="false"/> <SharedFolders/> <Clipboard mode="Bidirectional"/> <Guest memoryBalloonSize="0" statisticsUpdateInterval="0"/> <GuestProperties/> </Hardware> <StorageControllers/> </Machine> </VirtualBox> please help me if i am doing anything wrong , how can i specify storage controller in xml file and any input on why it is aborting with segfault sorry for the long post and xml -- Madhu

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[libvirt-users] virsh domxml-to-native xen-xm request
by Mike Viau 22 Mar '10

22 Mar '10

Hello, I was looking at http://libvirt.org/drvxen.html And realized that "virsh domxml-to-native" may be used to convert the libvirt xml formatted domU configuration to native. The configuration is for stubdom-dm Xen guests. Syntax appears to be virsh domxml-to-native xen-xm new_vm1.xml > /etc/xen/new_vm1 but I get an error. error: invalid argument in unsupported config type xen-xm Can someone please post their output of the command: virsh domxml-to-native xen-xm new_vm1.xml The working libvirt XML formatted Xen DomU config (new_vm1.xml) <domain type='xen'> <name>test</name> <os> <type>hvm</type> <loader>/usr/lib/xen/boot/hvmloader</loader> <boot dev='hd'/> </os> <memory>7340032</memory> <vcpu>7</vcpu> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <features> <pae/> <acpi/> <apic/> </features> <clock offset='utc'/> <devices> <emulator>/usr/lib/xen/bin/stubdom-dm</emulator> <interface type='bridge'> <source bridge='eth0'/> <mac address='00:50:56:0f:dd:02'/> </interface> <disk type='block' device='disk'> <source dev='/dev/sys/lv0'/> <target dev='hda'/> </disk> <disk type='block' device='disk'> <source dev='/dev/sys/lv1'/> <target dev='hdb'/> </disk> <disk type='block' device='disk'> <source dev='/dev/sys/lv2'/> <target dev='hdc'/> </disk>  <graphics type='vnc' autoport='yes'/> </devices> </domain> -M _________________________________________________________________ IM on the go with Messenger on your phone http://go.microsoft.com/?linkid=9712960

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[libvirt-users] issues with Migrating a domain
by mawei 21 Mar '10

21 Mar '10

Hi everyone i've been trying to migrate a domain from hostA to hostB.But everytime i did it with "virsh --live migrate <Domain> xen+ssh://root@Destination", it failed and told me something like "Error Domain not found:xenUnifiedDomainLookupByName". The same thing happened when i tried to do the same thing with libvirt API like virDomainMigrate & virDomainMigrateToURI. i am confused about this. So can anybody can tell me why?Thanks a lot. BTW ,my OS is CentOS 5.4 and my hypervisor is xen3.1.2 which is installed with the OS.And the libvirt version is 0.7.7. THANKS A LOT AGAIN. _________________________________________________________________ 约会说不清地方？来试试微软地图最新msn互动功能！ http://ditu.live.com/?form=TL&swm=1

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[libvirt-users] Pool, iSCSI and guest start
by Nicolas Greneche 20 Mar '10

20 Mar '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Former user of Xen and newbie in kvm/qemu/libvirt stuff, I give it a try on my network ;-) I need to run a VM with iSCSI target attached. I did it this way : 1) Creation of iscsi pool (equa.xml) : <pool type="iscsi"> <name>equalog</name> <source> <host name="10.10.0.1"/> <device path="iqn.2001-05.com.equallogic:0-8a0906-4992c7f05-39c000000114b8fc-vglog"/> </source> <target> <path>/dev/disk/by-path</path> </target> </pool> This pool start smoothly (when open-iscsi started), no problems. An entry is created in /dev/disk/by-path/ related to iscsi target. 2) I flagged it autostart : root@sandi:~# virsh pool-autostart equalog Pool equalog marked as autostarted root@sandi:~# virsh pool-list Name State Autostart - ----------------------------------------- equalog active yes 3) In my guest VM, I have following section : <disk type='block' device='disk'> <driver name='qemu'/> <source dev='/dev/disk/by-path/ip-10.10.0.1:3260-iscsi-iqn.2001-05.com.equallogic:0-8a0906-4992c7f05-39c000000114b8fc-vglog-lun-0'/> <target dev='vdc' bus='virtio'/> <alias name='virtio2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> When I start VM, iscsi target is availaible. The snag is that when I reboot the host, the pool is not automatically started (making it impossible to autostart VM relying on this iscsi volume). I verified that open-iscsi is started first. Startup script is localised in /etc/rcS.d which is prior to /etc/rc2.d (my default runlevel). Libvirtd is started in rc2.d and not mentionned in rcS.d. My questions are : - - Is this the correct way to attach iscsi volume to a guest ? - - Did I missed something to have iscsi pool autostart working at boot time ? My environement : Debian Squeeze 64 bits root@sandi:~# virsh -v 0.7.6 root@sandi:~# /usr/sbin/libvirtd --version /usr/sbin/libvirtd (libvirt) 0.7.6 Thanks for your attention, - -- Nicolas Greneche - RSSI et Sysadmin Centre de Ressources Informatiques (CRI) Doctorant au sein du projet SDS - www.sds-project.fr Mail : nicolas.greneche_(at)_univ-orleans.fr GPG : http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x5FEBD0EF Universite d'Orleans Web : http://blog.garnett.fr Batiment 3IA - 2e etage Tel : 02 38 49 25 26 6 rue Leonard de Vinci BP 6102 45061 ORLEANS Cedex 2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkugsQsACgkQTx/Y+1/r0O90NACeMvgK2mA4EUaB+JzA7v6+xQxO jNsAmwSIh428gtZRa2jVkekyYBTpVVJK =ltP0 -----END PGP SIGNATURE-----

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[libvirt-users] virsh shutdown does not stop XP-Pro guest
by Don Morrison 18 Mar '10

18 Mar '10

I've been trying to get "virsh shutdown" to work against an XP-Pro guest with no luck so far. It seems to have no effect - I have to run "virsh destroy" instead which is less than desirable. I have enabled <acpi> in the domain xml so I think the problem is on the guest side. A couple of questions: 1) How can I confirm whether the XP guest has ACPI enabled. I actually think it doesn't because when I look at the "ACPI Multiprocessor PC" device driver name, it lists "hal.dll". This is NOT ACPI enabled according to this site: http://technet.microsoft.com/en-us/library/bb457123.aspx. Am I reading this correctly? 2) I tried to enable ACPI at install time by bringing up virt-viewer and pressing F5 on the blue install screen as instructed here: http://www.computing.net/answers/windows-xp/enable-acpi-in-xp-without-reins… But F5 didn't have any effect. Has anybody else been able to get this to work? I'm running KVM 0.12.2-0.4.1 and Libvirt 0.7.6-1.2.3 Thanks. Don Morrison

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[libvirt-users] migrate with libirt 0.7.0
by Daniel Bidwell 17 Mar '10

17 Mar '10

Using ubuntu 9.10 and libvir 0.7.0, when I do a migrate a domain from machine A to B, the migration "completes" but remains in a frozen state until I do a "suspend/resume" on it on B. Then it runs fully normally. What do I do to skip the suspend/resume steps? -- Daniel R. Bidwell | bidwell(a)andrews.edu Andrews University | Information Technology Services If two always agree, one of them is unnecessary "Friends don't let friends do DOS" "In theory, theory and practice are the same. In practice, however, they are not."

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[libvirt-users] internal error cannot parse QEMU version number
by jeremy avnet 17 Mar '10

17 Mar '10

I've seen this error a couple of times over the past month, but it's starting to happen more regularly now (perhaps since VM usage is increasing). The last few times I've seen it when trying to start a VM (virsh start domain): $ virsh start goat Connecting to uri: qemu:///system error: Failed to start domain goat error: internal error cannot parse QEMU version number in ' PC emulator version 0.11.0 (qemu-kvm-0.11.0), Copyright (c) 2003-2008 Fabrice Bellard' Running libvirt version 0.7.0-1ubuntu13.1 under Ubuntu 9.10 amd64. $ kvm --version QEMU PC emulator version 0.11.0 (qemu-kvm-0.11.0), Copyright (c) 2003-2008 Fabrice Bellard I saw this message, but it's for an older version: http://osdir.com/ml/libvir-list/2009-05/msg00192.html Any ideas on how to prevent this error? Thank you. .:. jeremy

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[libvirt-users] behaviour of "virsh shutdown domainName"
by Jorge Somavilla 16 Mar '10

16 Mar '10

Hi all, I am experiencing some problems with different versions of libvirt (0.7.5 and 0.7.7), with a kvm (WinXP), host running Ubuntu 9.10, and i would like to ask you two questions: - In virsh, after running the command "shutdown domainName", what should be the final state of the domain, if the shutdown finishes correctly: "shutoff", "no-state", "inactive", or the domain shouldn't show in "list --all" (full clean-up)? - After the command "shutdown domainName", should i be able to run the command "start domainName", without first defining the domain? (i.e.: does shutdown "undefine" the domain?). In my experience 0.7.5 used to leave the shut down domains as defined, so i could run "start" right after. Testing in other hosts this doesn't work always like that, and even if the domain apparently shuts down correctly, the domain sometimes shows in "list --all", and sometimes it doesn't. With libvirt 0.7.7 the domain never shows in "list --all" after a successful shutdown, which makes me think it was a bug and it has been corrected. Am i missing anything? Any help would be much appreciated, thanks in advance. Jorge Somavilla.

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[libvirt-users] Duplicate USB vendor,product specification
by Don Morrison 16 Mar '10

16 Mar '10

I studying how to attach USB devices to a KVM guest virtual machine using libvirt. Using the "vendor" and "product" to specify the source device seems like a good option since the "bus" and "device" values can change as a device is removed and re-inserted. The question I have is what should I expect to happen if I plug in two identical USB devices - so they have the same vendor/product information? There is nothing in the documentation on libvirt.org to address this case. Thanks. Don Morrison

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[libvirt-users] Memory domain
by angelo alfano 14 Mar '10

14 Mar '10

1. Can I set the memory of a domain when it is running? 2. If the host has a total memory of 2GB and launch two VM which respectively 2GB of memory setting, because I don't have a mistake o warning? Grazie Angelo

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[libvirt-users] Regarding SPICE
by anuj rampal 14 Mar '10

14 Mar '10

Hi, I have set up KVM on FC12. I was wondering if its possible to Display the VM using spice + libvirt? As in, if I can define my domain with graphics like: <graphics type='spice' port='-1' autoport='yes' listen='0.0.0.0'/> or <graphics type='spice' port='5903' ' listen='0.0.0.0'/> Thanks & Regards Anuj

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[libvirt-users] drivers
by mattias 14 Mar '10

14 Mar '10

I no i can use libvirt with qemu and xen But openvz? I run debian lenny with libvirt but no no oepnvz

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[libvirt-users] Problem with libvirt migration
by Daniel Bidwell 14 Mar '10

14 Mar '10

I have two hosts, vm1 and vm2, which are both running libvirt 0.7.0. They share a common ocfs2 file system that resides on a san, and have identical network configurations. I am running qemu-kvm 0.11.0 on ubuntu 9.10 servers. I start base32 on vm1 and it comes up (it also runs fine if started on vm2). Then from vm2 I do: vm2#: virsh -c qemu://vm1/system migrate --live base32 qemu://vm2/system The migration starts and the vm2 virsh returns to the prompt. vm2 shows base32 as running and vm1 shows base32 as stopped. The console for base32 on vm2 is frozen and unresponsive. I have the debug level set to 1 on both machines. This is an excerpt from the virsh.log file from vm1: 8:19:40.772: debug : qemudDomainMigratePerform:6513 : base32: migrate reply: migrate "tcp:vm2.cc.andrews.edu:49152" 08:19:40.772: debug : qemudShutdownVMDaemon:2076 : Shutting down VM 'base32' 08:19:40.773: debug : virEventRemoveHandleImpl:173 : Remove handle 11 08:19:40.773: debug : virEventRemoveHandleImpl:186 : mark delete 9 19 08:19:40.773: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.773: debug : virRun:796 : /usr/bin/virt-aa-helper -R -u libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5 08:19:40.773: debug : virEventRunOnce:567 : Poll got 1 event 08:19:40.773: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:40.773: debug : virEventDispatchHandles:440 : Skip deleted n=9 w=11 f=19 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=9 w=12, f=16 e=1 08:19:40.774: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:40.774: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:40.774: debug : virEventRunOnce:565 : Poll on 10 handles 0x2628850 timeout -1 08:19:40.960: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:40.960: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.960: debug : virDomainFree:1922 : domain=0x2605c60 08:19:40.960: debug : virUnrefDomain:373 : unref domain 0x2605c60 base32 1 08:19:40.960: debug : virReleaseDomain:327 : release domain 0x2605c60 base32 08:19:40.960: debug : virReleaseDomain:343 : unref connection 0x2679bd0 2 08:19:40.960: debug : virEventUpdateHandleImpl:146 : Update handle w=12 e=3 The logs on vm2 (destination host) are: 08:19:29.566: debug : virDomainMigratePrepare2:3233 : dconn=0x2096d50, cookie=0x7ff72bf59dc0, cookielen=0x7ff72bf59dcc, uri_in=(null), uri_out=0x20839f0,flags=1, dname=(null), bandwidth=0, dom_xml=<domain type='kvm' id='1'> <name>base32</name> <uuid>2469118c-9b90-44e3-a6ce-01a08bfe28f5</uuid> <memory>262144</memory> <currentMemory>262144</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' machine='pc-0.11'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <source file='/home/vms/base32/base32.vmdk'/> <target dev='hda' bus='ide'/> </disk> <interface type='bridge'> <mac address='00:0c:29:db:97:14'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='e1000'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'/> <video> <model type='cirrus' vram='9216' heads='1'/> </video> </devices> <seclabel type='dynamic' model='apparmor'> <label>libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5</label> <imagelabel>libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5</imagelabel> </seclabel> </domain> 08:19:29.569: debug : virGetDomain:296 : New hash entry 0x20941a0 08:19:29.569: debug : virDomainGetUUIDString:2441 : domain=0x20941a0, buf=0x7ff72bf584f8 08:19:29.569: debug : virDomainGetUUID:2407 : domain=0x20941a0, uuid=0x7ff72bf58450 08:19:29.569: debug : virExecWithHook:607 : /usr/bin/virt-aa-helper -c -u libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5 08:19:29.857: debug : virExecWithHook:607 : /usr/bin/kvm -help 08:19:29.865: debug : virEventRunOnce:567 : Poll got 1 event 08:19:29.871: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.871: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.871: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.871: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.871: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:29.872: debug : virEventRunOnce:567 : Poll got 2 event 08:19:29.872: debug : virEventDispatchHandles:450 : Dispatch n=2 f=8 w=3 e=1 0x2074e90 08:19:29.872: debug : device_added:513 : net_4a_cf_74_02_5d_6c 08:19:29.872: debug : virExecWithHook:607 : /usr/bin/kvm -S -M pc-0.11 -cpu qemu32 -m 256 -smp 1 -name base32 -uuid 2469118c-9b90-44e3-a6ce-01a08bfe28f5 -monitor unix:/var/run/libvirt/qemu/base32.monitor,server,nowait -boot c -drive file=/home/vms/base32/base32.vmdk,if=ide,index=0,boot=on -net nic,macaddr=00:0c:29:db:97:14,vlan=0,model=e1000,name=e1000.0 -net tap,fd=19,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus -incoming tcp:0.0.0.0:49152 08:19:29.885: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.885: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.885: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.885: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.885: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:29.885: debug : virEventRunOnce:567 : Poll got 1 event 08:19:29.885: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.885: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.885: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.885: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.885: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:30.075: debug : virEventAddHandleImpl:112 : Add handle 19 0 0x425d40 0x2073710 08:19:30.075: debug : virEventAddHandleImpl:116 : Used 10 handle slots, adding 10 more 08:19:30.075: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.075: debug : virEventRunOnce:567 : Poll got 1 event 08:19:30.075: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 8:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.075: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.075: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.075: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:30.076: debug : qemudDomainSetMemoryBalloon:3175 : base32: balloon reply: balloon 256 08:19:30.077: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:30.077: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.077: debug : virEventRunOnce:567 : Poll got 1 event 08:19:30.077: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=3 08:19:30.077: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with -1 ms freq 08:19:30.077: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.077: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=5 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.077: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.077: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.077: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:30.077: debug : virEventRunOnce:567 : Poll got 2 event 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=9 f=16 w=11 e=4 0x2058040 08:19:30.078: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:30.078: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.078: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.078: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.078: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:40.936: debug : virEventRunOnce:567 : Poll got 1 event 08:19:40.936: debug : virEventDispatchHandles:450 : Dispatch n=9 f=16 w=11 e=1 0x2058040 08:19:40.937: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:40.937: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:40.937: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:40.937: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:40.937: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:40.937: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:40.937: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:40.937: debug : virDomainMigrateFinish2:3281 : dconn=0x2096d50, dname=base32, cookie=(nil), cookielen=0, uri=tcp:vm2.cc.andrews.edu:49152, flags=1, retcode=0 08:19:40.938: debug : virGetDomain:298 : Existing hash entry 0x20941a0: refs now 2 08:19:40.938: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:40.938: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.938: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=3 08:19:40.938: debug : virEventInterruptLocked:640 : Interrupting The migration appears to have completed successfully, but the console doesn't respond to anything and neither does the ethernet. Any ideas on how to get past this last step? -- Daniel R. Bidwell | bidwell(a)andrews.edu Andrews University | Information Technology Services If two always agree, one of them is unnecessary "Friends don't let friends do DOS" "In theory, theory and practice are the same. In practice, however, they are not."

2 1

[libvirt-users] ESX support
by Jonathan Kelley 13 Mar '10

13 Mar '10

Just curious but how long has ESX support been in libvirt? Also I noticed this error when accessing one of my windows vms: error: internal error Expecting VMX entry 'scsi0.virtualDev' to be 'buslogic' or 'lsilogic' but found 'lsisas1068' Not sure whether this is an enhancement, defect, or not supported at this time. Thanks. -Jon

2 1

[libvirt-users] unable to get domain list of KVM guests from libvirt as non-root user
by Tom Georgoulias 13 Mar '10

13 Mar '10

I have a python script that monitors the guest VMs on a servers running Xen, but the script doesn't work properly on a server I just built with KVM. The script runs as a non-root user (same on all servers) and simply gathers some details on the status and names of the domains running on the host. The Xen and KVM servers are running CentOS 5.4 x86_64 and are using the same version of libvirt: libvirt-0.6.3-20.1.el5_4 libvirt-python-0.6.3-20.1.el5_4 Both Xen and KVM servers have the default libvirt.conf config file and the following /var/run/libvirt permissions: KVM: [root@kvm ~]# ls -l /var/run/libvirt total 16 srwx------ 1 root root 0 Mar 12 08:37 libvirt-sock srwxrwxrwx 1 root root 0 Mar 12 08:37 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Mar 8 13:05 network drwxr-xr-x 2 root root 4096 Mar 11 16:17 qemu Xen: [root@xen ~]# ls -l /var/run/libvirt total 16 srwx------ 1 root root 0 Feb 5 08:53 libvirt-sock srwxrwxrwx 1 root root 0 Feb 5 08:53 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Jan 21 14:38 network drwxr-xr-x 2 root root 4096 Oct 20 18:50 qemu Kernel/hypervisor versions of Xen and KVM servers: kernel-xen-2.6.18-164.9.1.el5 xen-3.0.3-94.el5_4.2 kvm-83-105.el5_4.27 kvm-qemu-img-83-105.el5_4.27 kernel-2.6.18-164.11.1.el5 To troubleshoot, I've been running python interactively as the non-root user. Here's how my Xen servers behave: [testu@xen ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [0, 3, 15, 16, 21, 24, 26, 30, 32, 36, 38, 41, 43, 45, 47, 49, 51, 55, 63, 67] >>> When I try the same thing on the KVM server: [testu@kvm ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) 14:33:07.303: error : No vport operation path found for host0 14:33:07.320: error : No vport operation path found for host4 14:33:07.325: error : No vport operation path found for host3 14:33:07.367: error : No vport operation path found for host1 14:33:07.368: error : No vport operation path found for host2 >>> domains = conn.listDomainsID() >>> print domains [] >>> However, when logged in as root on the KVM server, it works just like my Xen servers: [root@kvm ~]# python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [1] As an experiment suggested by a someone on the centos-virt list, I modified the ownership and permissions of the socket files in /etc/libvirt/libvirtd.conf to use the same user running the python script. That didn't make a difference. [testu@kvm ~]$ ls -l /var/run/libvirt total 16 srwxrwx--- 1 root testu 0 Mar 12 07:45 libvirt-sock srwxrwxrwx 1 root testu 0 Mar 12 07:45 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Mar 8 13:05 network drwxr-xr-x 2 root root 4096 Mar 11 16:17 qemu [testu@kvm ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) 07:45:56.893: error : No vport operation path found for host0 07:45:56.912: error : No vport operation path found for host4 07:45:56.919: error : No vport operation path found for host3 07:45:56.967: error : No vport operation path found for host1 07:45:56.968: error : No vport operation path found for host2 >>> domains = conn.listDomainsID() >>> print domains [] >>> Can someone give me some pointers on what to check next? I'm running out of ideas. Thanks, Tom

2 2

[libvirt-users] Problems with a logical pool creation
by Rubén Vejabalbán 12 Mar '10

12 Mar '10

Hi all, I am new in virtualization so forgive me any evidence. After pool definition, when I try to create a logical pool I obtain the following error: # virsh pool-define vms.pool.xml > Pool vms.pool defined from vms.pool.xml > > # virsh pool-start vms.pool > error: Failed to start pool vms.pool > error: internal error '/sbin/vgchange -ay vms.pool' exited with non-zero > status 5 and signal 0: Volume group "vms.pool" not found > Is anything wrong with my xml file? <pool type="logical"> > <name>vms.pool</name> > <source> > <device path="/dev/sda2"/> > </source> > <target> > <path>/var/lib/virt/images</path> > </target> > </pool> > Are pools created in this way permanent? Thank you! Jenaro Percal

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