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[libvirt-users] libvir: Domain error <domName>: invalid argument in virDomainGetXMLDesc
by Priya 23 Jul '10

23 Jul '10

All, I just downloaded and installed libvirt-bin and this is my first email to the group, so I apologize in advance if my questions are too naive! So, I am trying to access VMs running on xen3.2 hypervisor (host with kernel 2.6.24-24-xen) using virt-manager installed on a machine running Ubuntu 9.04 (client machine). I got to the point where I can connect to my virtual machine and my domain-0 through the virt-manager client (meaning that I already have libvirt, ssh-askpass downloaded and the libvirtd and xend running on my host machine), and on the client machine I can view the window showing the statistics of CPU utilization of my domain-0 and user domain. The attachment shows a shapshot of the virt-manager on my client machine. Now when I try to access the GUI of either of domain-0 or the user domain (by selecting the specific domain and clicking open) I get the following error message in a pop-up on my client and in the libvirtd console on the host: "libvir: Domain error xen_2: invalid argument in virDomainGetXMLDesc" I tried to Google this error, but I don't find any clear answers. It seems to be a bug in the libvirt implementation that has been detected and resolved already. And I am confused as to why is it that such a recent version is still buggy? Should I have downloded another version instead? I desperately wish to resolve this problem and would appreciate any guidance. Many thanks! -- Priya Bhat

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[libvirt-users] How to create a guest os from existing disk image file with virt-install
by Rajiv Rajaian 22 Jul '10

22 Jul '10

Hi I have configured KVM with Fedora Core 13 by enabling the KVM virtualization option while installing OS. I have successfully created the guest OS by using the virt-install API /usr/sbin/virt-install --name centos5 --ram 512 --disk path=/var/lib/libvirt/images/ centos.img,size=5 --network network:default --accelerate --vnc -c /tmp/CentOS-5.3-i386-bin-DVD.iso Os installed successfully and after rebooting am able to login to the guest OS using the virt-viewer command using vnc viewer ..It shows Booting from Hard Disk... GRUB Loading stage2..... But the guest os is not booted I want to the create the guest os from existing configured disk /var/lib/libvirt/images/centos.img.. What modifications should be done with my configuration file ?? Pleas help me to solve this. [root@kvmcluster ~]# virsh dumpxml centos5 <domain type='qemu' id='2'> <name>centos5</name> <uuid>cabfad09-ff8b-e1ca-051a-6729e301f6a1</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' machine='fedora-13'>hvm</type> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/centos.img'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu'/> <source file='/tmp/CentOS-5.3-i386-bin-DVD.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:bf:32:c2'/> <source network='default'/> <target dev='vnet0'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/2'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' keymap='en-us'/> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> </devices> <seclabel type='dynamic' model='selinux'> <label>system_u:system_r:svirt_t:s0:c370,c413</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c370,c413</imagelabel> </seclabel> </domain>

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[libvirt-users] Force network to append iptables rules to end or specified number?
by steven765＠yahoo.com 20 Jul '10

20 Jul '10

Subject line says it all. Every time I restart a network libvirt inserts its standard rules at the head of the ip forward chain. The deny lines in there clobber access to my servers. Is there any way to make it append those rules at a specific number or at the end by default? Many Thanks, Steve

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Re: [libvirt-users] [virt-tools-list] Possible to rename a volume
by Cole Robinson 20 Jul '10

20 Jul '10

On 07/20/2010 02:54 AM, Bla Blubb wrote: > Hi, > > is there a way to rename a volume via virsh? > > Regards Jessica > No, though you could use vol-clone and then vol-delete on the original. Would be slow/inefficient understandably. - Cole

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[libvirt-users] Allow customer to stop and start their own VPS, but not others
by Neil Aggarwal 19 Jul '10

19 Jul '10

Hello: One of my customers asked for access to stop and start their VPS. Right now, I can do that using virsh, but I do not want to give this customer the ability to stop and start all VPSs running on the host. Is there a way to give stop and start control of one VPS to someone? I am using KVM on a CentOS 5.5 host. Thanks, Neil -- Neil Aggarwal, (281)846-8957 FREE trial: Virtualmin VPS with unmetered bandwidth http://UnmeteredVPS.net/virtualmin

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[libvirt-users] kvm migration problem
by mahsa najafzadeh 19 Jul '10

19 Jul '10

Hi, I am running ubuntu 9.10, with kvm and libvirt-bin, etc. Using virsh, I can't live-migrate a VM from host1 to host2. It reports a unknown failure. The VM image is accessible on both source and destination hosts located on a shared storage using nfs. Image directory is on the same path on both hosts. The src and destination hosts are on the same subnet. I can connect to remote host with qemu+ssh but I can't migrate. my configuration is: $ uname -a Linux mahsa1-desktop 2.6.31-21-generic-pae #59-Ubuntu SMP Wed Mar 24 08:47:55 UTC 2010 i686 GNU/Linux $virsh # version Compiled against library: libvir 0.7.0 Using library: libvir 0.7.0 Using API: QEMU 0.7.0 Running hypervisor: QEMU 0.11.0 Connect to the local machine's hypervisor as follows and see the localmachines:$virsh # connect qemu:///system $virsh # list Id Name State -------------------------------- 2 VmLinux11 running 3 VMLinux12 running 4 VmLinux13 running Verify connectivity to the hypervisor of the remote target system asfollows:$virsh connect qemu+ssh://host2name/system Attempt the migration as follows:$virsh migrate --live VmLinux13 qemu+ssh://host2name/system Connecting to uri: qemu:///system root@host2name's password: error: Unknown failure the log file on the source physical host gives this:14:57:13.514: error : remoteIO:7184 : operation failed: migrate failed: migrate "tcp:host2name:49161" migration failed 14:57:13.709: error : remoteIO:7184 : Unknown failure I disable the firewall on both hosts but it doesn't still work. please help me.

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[libvirt-users] ESX - How to create a new domain
by George Goh 18 Jul '10

18 Jul '10

Hi, I've been trying to figure out how to create a new domain(create a new virtual machine) using the ESX driver. The documentation at http://libvirt.org/drvesx.html says: To define a new domain the driver converts the domain XML into a VMware VMX file and uploads it to a datastore known to the ESX server. Because multiple datastores may be known to an ESX server the driver needs to decide to which datastores the VMX file should be uploaded. The driver deduces this information from the path of the source of the first file-based harddisk listed in the domain XML. But I can't find a way to do this in virsh. Any ideas? -George

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[libvirt-users] How to create a guest os from existing disk image file
by Rajiv Rajaian 15 Jul '10

15 Jul '10

Hi I have configured KVM with Fedora Core 13 by enabling the KVM virtualization option while installing OS. I have successfully created the guest OS by using the virt-install API /usr/sbin/virt-install --name centos5 --ram 512 --disk path=/var/lib/libvirt/images/ centos.img,size=5 --network network:default --accelerate --vnc -c /tmp/CentOS-5.3-i386-bin-DVD.iso I am able to login to the guest OS using the virt-viewer command using vnc Now i want to the guest os from the existing configured disk /var/lib/libvirt/images/centos.img.. What modifications should be done with my configuration file ?? Pleas help me to solve this. [root@kvmcluster ~]# virsh dumpxml centos5 <domain type='qemu' id='2'> <name>centos5</name> <uuid>cabfad09-ff8b-e1ca-051a-6729e301f6a1</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' machine='fedora-13'>hvm</type> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/centos.img'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu'/> <source file='/tmp/CentOS-5.3-i386-bin-DVD.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:bf:32:c2'/> <source network='default'/> <target dev='vnet0'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/2'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' keymap='en-us'/> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> </devices> <seclabel type='dynamic' model='selinux'> <label>system_u:system_r:svirt_t:s0:c370,c413</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c370,c413</imagelabel> </seclabel> </domain> Thanks/Regards. Rajiv.R Project Associate. CARE. MIT Anna University Chennai

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[libvirt-users] C# Client Fails to Locate libvirt-0.dll
by Development 14 Jul '10

14 Jul '10

Attempting to develop C sharp client that uses libvirt DLL. Despite placing the libvirt DLL in a number of different locations, call to virConnectOpen() fails consistently with a DLL not found exception. Declaration as follows: [DllImport("libvirt-0.dll")] private static extern IntPtr virConnectOpen(String name); Called as follows: IntPtr conn = virConnectOpen(null); Suggestions? Tim McLeod

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[libvirt-users] how to deactivate an active network with virsh? (and what is that anyway)
by John Lumby 14 Jul '10

14 Jul '10

virsh provides net-start <netname-or-id> to activate an inactive network. Does virsh provide any way to do the exact converse? deactivate an active network without destroying, undefining, removing, ... Also - I am curious - what does activate actually do? What change in state of anything occurs? ( I read the document at http://libvirt.org/formatnetwork.html which the man page referred me to but it had nothing to say on this. I did not try to read the code). John _________________________________________________________________ MSN Dating: Find someone special. Start now. http://go.microsoft.com/?linkid=9734384

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