- Users - libvirt List Archives

[libvirt-users] F20 Virt-Manager with MacVTap not working
by John Obaterspok 13 Feb '14

13 Feb '14

Hello, I've setup a VM with default networking (NAT) and this works fine but hosts on my LAN can't get to the VM since it uses NAT. When I try to set network to use MacVTap with either default or bridged I get no networking for the VM. Any hints around this? I would like to have the VM's on the same LAN as my host and other machines. I don't care if the VM host can't reach the guests. It did work find in F19 but there I believe I had more MacVtap devices to choose from. -- john

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[libvirt-users] Help? Running into problems with migrateToURI2() and virDomainDefCheckABIStability()
by Chris Friesen 13 Feb '14

13 Feb '14

Hi, We've run into a problem with libvirt 1.1.2 and are looking for some comments on whether this is a bug or design intent. We're trying to use migrateToURI() but we're using a few things (numatune, vcpu mask, etc.) that may need adjustment during the migration. We found that migrateToURI2() mostly works if we use XML created by copying the domain XML from the running instance and modifying the appropriate sections. The problem that we're seeing is that the serial console checking in libvirt/src/conf/domain_conf.c::virDomainDefCheckABIStability() is failing even though we haven't touched the serial console XML: 2014-02-10 19:41:07.196 1264 ERROR nova.virt.libvirt.driver [-] [instance: 42a841a8-034f-4565-937e-adb396a2ec48] Live Migration failure: unsupported configuration: Target domain console count 1 does not match source 0 On occasion it passes if the devices/serial/source element happens to be the same after migration, but this seems to be a fluke. If we remove the devices/serial/source element in the XML it seems to make the serial console check work on the first migration, but upon doing subsequent migration it fails with a console count error: 2014-02-07 16:11:32.459 28759 ERROR nova.virt.libvirt.driver [-] [instance: 1d7c470d-4337-450a-8a40-d0fb375ca2c1] Live Migration failure: unsupported configuration: Target domain console count 0 does not match source 1 Are we doing something wrong? Is there an issue with the console check code? Is there a better way to do what we're trying to do? Any help would be appreciated... Thanks, Chris

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[libvirt-users] Can you verify currently defined libvirt secret provides valid Cephx auth?
by Scott Sullivan 13 Feb '14

13 Feb '14

As the subject suggests, I am wondering if its possible to verify if the currently defined libvirt secret provides valid authentication via Cephx to a Ceph cluster? I ask because ideally I would like to verify that the given cephx credentials in my libvirt secret are valid before I even attempt the virsh attach-device on the domain. I tried searching for a solution to this, but I can't seem to find a way to _just_ check if the currently defined libvirt secret provides valid authentication to the Ceph cluster or not. Is this possible?

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[libvirt-users] LXC container driver
by arnaud gaboury 13 Feb '14

13 Feb '14

Dear all, I am slowly building a Arch Linux VM guest on my Arch Linux host. The guest machine is now built and is recognized as shown by this command : gabx@hortensia ➤➤ ~ % machinectl list MACHINE CONTAINER SERVICE dahlia container nspawn 1 machines listed. I an following the libvirt.org documentation. Now, according this page[1] about lxc driver, i am dealing with namespace requirements. This sentence, in bold, puzzles me: A suitably configured UID/GID mapping is a pre-requisite to making containers secure, in the absence of sVirt confinement. If I understand what a namespace is, I have no idea how to make sure my UIG/GID mapping is well configured. I would appreciate having any hints abut this part of the settings. Another question : is there any advantage/disadvantage using the lxc Userspace tools[2] instead of libvirt to manage these namespaces ? Thank you for help. [1]http://libvirt.org/drvlxc.html [2]http://linuxcontainers.org/

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[libvirt-users] Connection from host to lxc container dbus
by Piotr Bartosiewicz 12 Feb '14

12 Feb '14

Hi, I am unsuccessfully trying to connect from host to containers dbus. Inside container dbus socket file is visible as /run/dbus/system_bus_socket. The problem is that /run is mounted as tmpfs in container (by systemd on container) and thus the directory content is not visible outside the container. Is there any way to make this file visible also outside the container? Regards, Piotrek

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[libvirt-users] SR-IOV: no traffic isolation between VFs with Broadcom 10Gbps cards
by Yoann Juet 11 Feb '14

11 Feb '14

Hi all, I'm testing on debian/unstable SR-IOV feature with Broadcom BCM57810 cards and KVM hypervisor: Compiled against library: libvirt 1.2.1 Using library: libvirt 1.2.1 Using API: QEMU 1.2.1 Running hypervisor: QEMU 1.7.0 bnx2x -> firmware 7.8.17 -> driver from kernel 3.12.7 8 VFs are created on the first PF. For each VF, a specific mac address is set manually using "ip link set eth0 vf x mac xx:xx:xx:xx:xx" command. I run several KVM guests with PCI passthrough (same kernel, bnx2x driver and firmware as the host), performance is close to bare metal. Well, that sounds good, until I start capturing the traffic inside each VM: host traffic is visible as well as traffic destined to other VM. It's like if internal card switching was inoperable. I made several tests with different kernels, different PCIe Passthrough method assignments for libvirt. All failed. Has anyone successfully experiment SR-IOV with Broadcom cards on linux ? ----- Some details: 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10) 01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10) 01:09.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.2 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.3 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.4 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.5 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.6 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function 01:09.7 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function # virsh nodedev-dumpxml pci_0000_01_09_0 <device> <name>pci_0000_01_09_0</name> <path>/sys/devices/pci0000:00/0000:00:01.0/0000:01:09.0</path> <parent>pci_0000_00_01_0</parent> <driver> <name>vfio-pci</name> </driver> <capability type='pci'> <domain>0</domain> <bus>1</bus> <slot>9</slot> <function>0</function> <product id='0x16af'>NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function</product> <vendor id='0x14e4'>Broadcom Corporation</vendor> <capability type='phys_function'> <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/> </capability> <iommuGroup number='35'> <address domain='0x0000' bus='0x01' slot='0x09' function='0x0'/> </iommuGroup> </capability> </device> # virsh nodedev-dumpxml pci_0000_01_09_1 <device> <name>pci_0000_01_09_1</name> <path>/sys/devices/pci0000:00/0000:00:01.0/0000:01:09.1</path> <parent>pci_0000_00_01_0</parent> <driver> <name>vfio-pci</name> </driver> <capability type='pci'> <domain>0</domain> <bus>1</bus> <slot>9</slot> <function>1</function> <product id='0x16af'>NetXtreme II BCM57810 10 Gigabit Ethernet Virtual Function</product> <vendor id='0x14e4'>Broadcom Corporation</vendor> <capability type='phys_function'> <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/> </capability> <iommuGroup number='36'> <address domain='0x0000' bus='0x01' slot='0x09' function='0x1'/> </iommuGroup> </capability> </device> Guest A XML: ... <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x01' slot='0x09' function='0x0'/> </source> </hostdev> ... Guest B XML: ... <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x01' slot='0x09' function='0x1'/> </source> </hostdev> ... -- Université de Nantes - Direction des Systèmes d'Information

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[libvirt-users] libvirt 1.2.1 / lxc : default virtual network not defined after installing/starting Libvirt
by Mohamed Amine Larabi 11 Feb '14

11 Feb '14

Hi There, I am using Libvirt 1.2.1 on Fedora 20. So, Libvirt is well installed and started but the weird thing is that the 'default' virtual network is not automatically defined and started, knowing that I can define/start it manually and everything goes fine. previously I was using libvirt 1.0.4 and the 'default' virtual network was defined/started at Libvirt startup. so, I am wondering if this new behavior was introduced intentionally in the latest versions of Libvirt or it's a known issue. Thank you in advance for your help. Regards Mohamed.

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[libvirt-users] event-test.py cannot detects domain shutdown
by Kim Larry 11 Feb '14

11 Feb '14

Hi, I used event-test.py from here: http://libvirt.org/git/?p=libvirt-python.git;a=blob;f=examples/event-test.p… which is very lasted version. However, it detects all of events but not domain shutdown. I've searched through Google and got nothing. libvirtd version is 1.1.4 and using Xen for hypervisor. Any ideas? Larry

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[libvirt-users] libvirt/qemu and cgroups
by arnaud gaboury 11 Feb '14

11 Feb '14

Dear list, I am building a Arch server on my Arch box. My tools are QEMU/KVM and libvirt to manage the guest, systemd as system manager. I am looking at implementing the Linux Control Groups facilities for resource management. Even after long hours of reading, I am not quite sure about how to deal with the cgroups facilities. First, do I really need to care about all that, or libvirt and systemd will manage the resource in an efficient way right out of the box? If not, It's all about /etc/cgconfig.conf and cgrules.conf. I am honestly not sure : -what are the correct mount points for cpu, memory etc in the /sys/fs/cgroup directory . - which directories am I supposed to mk, if any ? Then, Archwiki[1] says: # cgcreate -a $USER -g memory,cpu:groupname - what is the groupename I shall create (qemu*, MyMachine) ? - which $USER shall I use (qemu*, my username) ? * qemu:qemu as user:group in /etc/libvirt/qemu.conf Thank you for some help as I admit if I understand the cgroups principle and advantages, I am far from understanding how to create such a group in case of a VM. [1]https://wiki.archlinux.org/index.php/Cgroups

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[libvirt-users] How to use /dev/mapper in virt-manager/libvirt
by Marc Haber 10 Feb '14

10 Feb '14

Hi, my test host is running Debian/GNU Linux unstable and has virt-manger 0.9.5 and libvirt 1.2.1. I am using encryption and thus have devices in /dev/mapper that are not LVs, for example called /dev/mapper/myvirtualdisk. I'd like to configure libvirt in a way that allows me to directly assign such devices to a VM. This does not work when I create a filesystem directory storage pool in virt-manager since virt-manager obviously choked in /dev/mapper/control, which is a character special device that is only readable by root. I currently help myself by linking the devices in question manually to /dev/luksdev and having a filesystem directory storage pool point to that directory. this works, but is ugly. Is there a nicer way to get the contents of /dev/mapper available as volumes in virt-manager? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 31958061 Nordisch by Nature | How to make an American Quilt | Fax: *49 621 31958062

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[libvirt-users] Failed to terminate process X with SIGKILL: Device or resource busy
by sylecn 10 Feb '14

10 Feb '14

Hi, I'm using libvirt/kvm with openstack. When vm has CPU stall, the instance can't be destroyed. I have asked the question on openstack user mailing list and received no answers in weeks. Here is one example: # virsh destroy instance-00000085 error: Failed to destroy domain instance-00000085 error: Failed to terminate process 61222 with SIGKILL: Device or resource busy # lsof -p 61222 # ps -f -p 61222 UID PID PPID C STIME TTY TIME CMD 107 61222 1 68 Jan24 ? 9-23:06:19 [qemu-system-x86] <defunct> The log in /var/log/libvirt/libvirtd.log: 2014-02-08 03:21:31.597+0000: 2177: error : virProcessKillPainfully:315 : Failed to terminate process 61222 with SIGKILL: Device or resource busy Restart libvirt-bin service did not solve the problem. virsh shutdown/reboot just hang. Maybe that is because the CPU in vm is stalled. I wonder if there is some way to destroy (or rebuild) dead instance without rebooting the hypervisor. Any suggestions is welcome. The software I am running: hypervisor os: ubuntu 12.04.3 hypervisor kernel: 3.8.0-35-generic vm os: ubuntu 12.04 vm kernel: 3.2.0-56-virtual openstack: havana libvirt: 1.1.1-0ubuntu8~cloud2 Thanks, Yuanle

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[libvirt-users] Automate Windows 7 installation via Answer file
by RAJESH David John 08 Feb '14

08 Feb '14

Hello, Is there a means to automate windows 7 installation after Running "Virsh create windows7.xml" OS = Centos 6.2 Hypervisor = KVM Any ideas or pointer is greatly appreciated. Thanks Rajesh J

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[libvirt-users] Connecting disks to controller virtio-scsi of qemu/kvm
by chickenmarkus＠freenet.de 08 Feb '14

08 Feb '14

Hello, I try to use the virtio-scsi driver to use my disks. But my setup at first: * in general Debian Wheezy * Kernel: 3.11-0.bpo.2-amd64 (http://packages.debian.org/wheezy-backports/linux-image-3.11-0.bpo.2-amd64) * Qemu-KVM: 1.7.0 (http://packages.debian.org/jessie/qemu-kvm) * Virsh 1.2.1 (http://packages.debian.org/jessie/libvirt-bin) The new kernel and dirty things from Jessie are for discard support (also not working with current configuration despite thin volumes with working discard). Once I have the this "new" qemu version, why not to use virtio... Every disk with target bus "scsi" gets an own scsi-hd device. Libvirt ignores the scsi controller of type virtio-scsi. Here is a XML snippet: <devices> <controller type='scsi' model='virtio-scsi' index="0"/> <disk type="block" device="disk"> <source dev="/dev/ssd0/sarabi"/> <driver discard="unmap"/> <target dev="sda" bus="scsi"/> <address type="drive" controller="0" bus=0/> </disk> </devices> This creates the virtio-scsi controller (verified by lspci in guest) but do not "connect" the disks to it. The resulting command line looks following: kvm [...] -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 -drive file=/dev/ssd0/sarabi,if=none,id=drive-scsi0-0-0-0,format=raw,discard=unmap -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2 [...] How get my disk to run over virtio-scsi? Or did I found something like a bug? Bye Markus

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[libvirt-users] Can I move the disk image of the guest while it is running?
by Gergely Horváth 08 Feb '14

08 Feb '14

Hello guys! We want to move some guests' disk images to different locations (within the same machine, locally), but we do not want to turn off the guests. Can we do that while the guest is running, like live migration? I did not find any related documentation or posts about it. Let's say the guest has a disk at /ssd/image.raw We want to move that to /hdd/image.raw Is there any way to do that without interrupting the guest? -- Üdvözlettel / Best regards Horváth Gergely | gergely.horvath(a)inepex.com IneTrack - Nyomkövetés egyszerűen | Inepex Kft. Ügyfélszolgálat: support(a)inetrack.hu | +36 30 825 7646 | support.inetrack.hu Web: www.inetrack.hu | nyomkovetes-blog.hu | facebook.com/inetrack Inepex - The White Label GPS fleet-tracking platform | www.inepex.com

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[libvirt-users] Question about managing migration transfers
by Joaquim Barrera 07 Feb '14

07 Feb '14

Hi folks, As part of a project I am working on, I need to control every step of a migration, from when I establish the connection to the destination, to when I decide to move data blocks, its size, etc. As I can see in the documentation, tunnelled migration allows some kind of control, as the data goes through libvirt before leaving the host. May someone put more light on the subject? Is there any possibility to achieve such control I am looking for, or libvirt hacking will be needed? Thank you very much.

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[libvirt-users] Extending an existing LVM pool - vgextend and pool XML
by Daniel H Barboza 05 Feb '14

05 Feb '14

Hi, I am trying to figure it out the best way to add a disk/partition to an existing LVM pool. A google search led me to this link (a thread from this same mailing list, September 2013): https://www.redhat.com/archives/libvirt-users/2013-September/msg00136.html The interesting part is this: " On 21/09/13 02:15, McEvoy, James wrote: I looked around but could not find any info on how to expand a libvirt managed LVM storage pool. I do not see any virsh command to do it but I was successful using the vgexpand command to add some more storage once I destroyed the pools and then restarted it. I'd like to verify that this is the proper way to grow the storage in a libvirt LVM storage pool. It's not the proper way in principle, but since libvirt doesn't supportto extendthe volume groups for a logical pool yet, it's the only way now. Onehint though,you can try to refresh the pool by command "virsh pool-refresh" afterthe volume group of the pool is extended. I.e, don't have to restart the pool." I've tried this method and it works, but checking the pool XML using "virsh pool-edit <vg_name>" shows that the XML didn't change. Is it intended? The versions I'm using: # libvirtd --version libvirtd (libvirt) 1.1.3 # virsh --version 1.1.3 Any thoughts/comments are welcome. Thanks!

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[libvirt-users] libvirt-1.2.0
by cool dharma06 04 Feb '14

04 Feb '14

hi, i am using libvirt-1.2.0 which is installed from source. Which i am using to launch instance on xen. its working fine when i am launching vm from the root user. But i am entered as another user means its throwing the error. And libvirt is working fine in that user except the creating vm: Please refer the following things: eucalyptus@cooldharma06:/opt/i-47FD0798$ virsh -c xen:/// WARNING: gnome-keyring:: couldn't connect to: /home/dharmalingams/.cache/keyring-r004e7/pkcs11: Permission denied Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # version Compiled against library: libvirt 1.2.0 Using library: libvirt 1.2.0 Using API: Xen 1.2.0 Running hypervisor: Xen 4.3.0 virsh # list Id Name State ---------------------------------------------------- *virsh # create libvirt_sec.xml * *error: Failed to create domain from libvirt_sec.xml* *error: access denied* >From the libvirtd.log: 2014-01-31 09:46:16.329+0000: 27937: error : virAccessDriverPolkitCheck:176 : access denied: Policy kit denied action org.libvirt.api.domain.write from 28281,1877379: exit status 1 2014-01-31 09:46:16.329+0000: 27937: error : virAccessManagerSanitizeError:203 : access denied 2014-01-31 09:46:16.329+0000: 27937: error : virAccessManagerSanitizeError:203 : access denied Suggest me some solution to solve this one. Thanks & Regards, cooldharma06.

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[libvirt-users] Management of host device for network passthrough
by Richard Gomes 03 Feb '14

03 Feb '14

Hello, I've configured a network passtrough like this: <interface type='direct'> <mac address='52:54:00:ec:e8:d9'/> <source dev='eth1' mode='passthrough'/> <target dev='macvtap0'/> <model type='rtl8139'/> <alias name='net1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </interface> OK. it works :) There's only one small difficulty: I have to make sure the host network interface is down before I start the VM. Then, after the VM starts, I have to bring the host network interface up by hand. If the host interface is up before the VM starts, the VM fails to start. If I do not bring the host network interface up after the VM starts, the VM cannot effectively communicate using that network interface. Does anybody has a "clean" solution for it, I mean: without employing some external "dirty" script or so? Thanks -- Richard Gomes http://rgomes.info http://www.linkedin.com/in/rgomes mobile: +44(77)9955-6813 inum <http://www.inum.net/>: +883(5100)0800-9804 sip:rgomes@ippi.fr

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[libvirt-users] Trouble configuring with macvtap passthrough on Debian Wheezy / Jessie
by Richard Gomes 03 Feb '14

03 Feb '14

( Posting again. Correct subject line now! ) Hello, I'm trying to use macvtap on Debian Wheezy. Actually, I've installed a recent version of libvirt and qemu from Jessie, using wheezy-backports. $ virsh version Compiled against library: libvirt 1.2.1 Using library: libvirt 1.2.1 Using API: QEMU 1.2.1 Running hypervisor: QEMU 1.7.0 I'm trying to configure a macvtap interface like this: <interface type='direct'> <mac address='52:54:00:7b:05:cd'/> <source dev='eth1' mode='passthrough'/> <model type='rtl8139'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </interface> The interface eth1 is used exclusively by this VM, so as far as I understand, mode 'passthrough' is enough since I'd like to "plug" the VM straight onto a public static IP. On my /etc/networks/interfaces, I have this: # start :: define eth1 iface eth1 inet manual # end :: define eth1 It does not matter whether eth1 is up or down, when I try to start the VM, I get the following error: Error starting domain: Cannot create macvlan devices on this platform: Function not implemented Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/asyncjob.py", line 66, in tmpcb callback(*args, **kwargs) File "/usr/share/virt-manager/virtManager/domain.py", line 1114, in startup self._backend.create() File "/usr/lib/python2.7/dist-packages/libvirt.py", line 866, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: Cannot create macvlan devices on this platform: Function not implemented Trying to solve the issue, I found this: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737097 I've tried to rebuild the package from Debian sources, but apparently, macvtap is already defined, as I've reported to another mailing list. For your information: > I'm new to building packages from Debian sources, so I followed > instructions from > > https://wiki.debian.org/HowToPackageForDebian#Building_Debian_packages > > $ apt-get -t wheezy-backports source libvirt > $ cd libvirt-0.9.12.3/ > $ sudo apt-get build-dep libvirt > $ debuild -i -us -uc -b > > So... yes, it works and builds without any errors. > > Next step now is applying the changes mentioned. > But I'm confused because /apparently/ debian/rules is already the way > it should be. > > ifneq (,$(findstring $(DEB_HOST_ARCH_OS), linux)) > WITH_STORAGE_LVM = --with-storage-lvm > WITH_STORAGE_ISCSI = --with-storage-iscsi > WITH_STORAGE_DISK = --with-storage-disk > WITH_UDEV = --with-udev --without-hal > WITH_CAPNG = --with-capng > WITH_POLKIT = --with-polkit > * WITH_MACVTAP = --with-macvtap** > ** WITH_NETWORK = --with-network** > * WITH_QEMU = --with-qemu > WITH_OPENVZ = --with-openvz > WITH_NETCF = --with-netcf > ifneq (,$(findstring $(DEB_HOST_ARCH), amd64 i386 ia64 mips mipsel powerpc)) > WITH_NUMA = --with-numactl > else > WITH_NUMA = --without-numactl > endif > ifneq (,$(findstring $(DEB_HOST_ARCH), ia64)) > WITH_LXC = --without-lxc > else > WITH_LXC = --with-lxc > endif > else > WITH_STORAGE_LVM = --without-storage-lvm > WITH_STORAGE_ISCSI = --without-storage-iscsi > WITH_STORAGE_DISK = --without-storage-disk > WITH_UDEV = --without-udev --with-hal > WITH_CAPNG = --without-capng > WITH_POLKIT = --without-polkit > * WITH_MACVTAP = --without-macvtap** > ** WITH_NETWORK = --without-network** > * WITH_QEMU = --without-qemu > WITH_LXC = --without-lxc > WITH_NUMA = --without-numactl > WITH_NETCF = --without-netcf > endif > > > I suppose that nothing has to be changed, correct? ... since the > _/then/_ branch already has the change mentioned and the _/else/_ > branch probably means that nothing related to networking would be > enabled anyway. > > Am I missing something ? Thoughts? Thanks a lot :) -- Richard Gomes http://rgomes.info http://www.linkedin.com/in/rgomes mobile: +44(77)9955-6813 inum <http://www.inum.net/>: +883(5100)0800-9804 sip:rgomes@ippi.fr

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[libvirt-users] intel quad gigabit nic and pci passthrough
by Ivan Kabaivanov 02 Feb '14

02 Feb '14

Hi all I have a very weird case of pci passthrough. I have a machine with 7 network interfaces, all of them intel. Four of them are on one quad giga ethernet device. If I manually unbind the devices and allow qemu to use them, with intel IOMMU working, everything works like a charm. Here's how I do it manually: root@kybrat (x86_64) ~]$ lspci -nn | grep net 00:19.0 Ethernet controller [0200]: Intel Corporation 82579V Gigabit Network Connection [8086:1503] (rev 06) 02:00.0 Ethernet controller [0200]: Intel Corporation 82572EI Gigabit Ethernet Controller (Copper) [8086:107d] (rev 06) 05:00.0 Ethernet controller [0200]: Intel Corporation 82571EB Gigabit Ethernet Controller [8086:10a4] (rev 06) 05:00.1 Ethernet controller [0200]: Intel Corporation 82571EB Gigabit Ethernet Controller [8086:10a4] (rev 06) 06:00.0 Ethernet controller [0200]: Intel Corporation 82571EB Gigabit Ethernet Controller [8086:10a4] (rev 06) 06:00.1 Ethernet controller [0200]: Intel Corporation 82571EB Gigabit Ethernet Controller [8086:10a4] (rev 06) 0c:00.0 Ethernet controller [0200]: Intel Corporation 82572EI Gigabit Ethernet Controller (Copper) [8086:107d] (rev 06) echo "8086 10a4" > /sys/bus/pci/drivers/pci-stub/new_id echo "8086 107d" > /sys/bus/pci/drivers/pci-stub/new_id echo "0000:05:00.0" > /sys/bus/pci/devices/0000\:05\:00.0/driver/unbind echo "0000:05:00.0" > /sys/bus/pci/drivers/pci-stub/bind echo "0000:05:00.1" > /sys/bus/pci/devices/0000\:05\:00.1/driver/unbind echo "0000:05:00.1" > /sys/bus/pci/drivers/pci-stub/bind echo "0000:06:00.0" > /sys/bus/pci/devices/0000\:06\:00.0/driver/unbind echo "0000:06:00.0" > /sys/bus/pci/drivers/pci-stub/bind echo "0000:06:00.1" > /sys/bus/pci/devices/0000\:06\:00.1/driver/unbind echo "0000:06:00.1" > /sys/bus/pci/drivers/pci-stub/bind echo "0000:0c:00.0" > /sys/bus/pci/devices/0000\:0c\:00.0/driver/unbind echo "0000:0c:00.0" > /sys/bus/pci/drivers/pci-stub/bind qemu-system-i386 -enable-kvm \ -m 2048 \ -cpu host \ -machine pc-q35-1.6 \ -drive file=/media/virtual/krym.qcow2,if=virtio \ -net none \ -device pci-assign,host=06:00.1,rombar=0 \ -device pci-assign,host=05:00.0,rombar=0 \ -device pci-assign,host=06:00.0,rombar=0 \ -device pci-assign,host=05:00.1,rombar=0 \ -device pci-assign,host=0c:00.0,rombar=0 \ -cdrom /media/virtual/asg-9.107-33.1.iso \ -boot c \ -vnc :0 \ -runas virtual \ -monitor unix:/media/virtual/control/krym/monitor,server,nowait \ -rtc base=localtime,clock=host,driftfix=none This starts qemu and pci passthrough works nicely. Now, if I try to do the same thing through libvirt, virt-install doesn't like the quad ethernet device pci passthrough and I get the error below: virt-install --name=krym --ram=2048 --vcpus=1 --cpu=host --import --os-type=linux --disk path=/media/virtual/krym.qcow2,format=qcow2,bus=virtio --nonetworks --graphics vnc,port=5900 --virt-type=kvm --machine=q35 --accelerate --host-device=pci_0000_06_00_1 --host-device=pci_0000_05_00_0 --host-device=pci_0000_06_00_0 --host-device=pci_0000_05_00_1 --host-device=pci_0000_0c_00_0 Starting install... ERROR Requested operation is not valid: PCI device 0000:06:00.1 is not assignable Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start krym otherwise, please restart your installation. If I try to use just one NIC (any NIC, as long as it's not the quad NIC), things do work: virt-install --name=krym --ram=2048 --vcpus=1 --cpu=host --import --os-type=linux --disk path=/media/virtual/krym.qcow2,format=qcow2,bus=virtio --nonetworks --graphics vnc,port=5900 --virt-type=kvm --machine=q35 --accelerate --host-device=pci_0000_0c_00_0 Starting install... Creating domain... | 0 B 00:00:01 Cannot open display: Run 'virt-viewer --help' to see a full list of available command line options Domain creation completed. You can restart your domain by running: virsh --connect qemu:///system start krym So I guess libvirt has some problem with the intel quad NIC. I will appreciate any help. Thanks, IvanK.

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[libvirt-users] Creating a static Virtio-Serial 'Port'
by Matthew Harrold 02 Feb '14

02 Feb '14

Hi all, I'm having some problems getting Virtio-Serial running as I'd like. I have 10x USB <-> Serial adapters plugged into my VM Host / Hypervisor, acting as a console server. These are currently operated by the VM Host itself, but I would like to move them to a guest. I have used ISA-Serial but it's limited to 4 'ports' per guest. I've setup Virtio-Serial for the guest and it works, I can pass info via serial from the Host to Guest. I'd like to use socat to link the physical USB serial TTY's and the guest serial 'ports' in /dev/pts. This is works fine and the guest can communicate with the Serial <-> USB adapter, however the Guest serial 'ports' are in /dev/pts and they are assigned a number dynamically when the VM is started, so I can't automate socat to run at boot. Is it possible to assign static PTY's in the host, to the Guest? Or, if this needs to be scripted, is there a command I can run to find out which PTY it's on without parsing the XML from a dump? Thanks.

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[libvirt-users] Libvirt Error Creating VMs for Nimbus Cloud
by Joshua McKee 01 Feb '14

01 Feb '14

Hello, I am having an issue with libvirt in my Nimbus cloud setup. When I use the Nimbus VM creation test scripts on a VMM node (using libvirt), the VM is created without a problem. However, when I attempt to create a new VM using Nimbus (which then tries to create the VM on the VMM node), I encounter the following error: --------------------------------------------------------------------------------------------------------------------------------------------- $ ./nimbus-cloud-client-022/bin/cloud-client.sh --run --name testimage --hours 1 Launching workspace. Workspace Factory Service: https://yellow:8443/wsrf/services/WorkspaceFactoryService Creating workspace "vm-035"... done. IP address: 172.29.99.20 Hostname: pub02 Start time: Fri Jan 31 13:48:57 MST 2014 Shutdown time: Fri Jan 31 14:48:57 MST 2014 Termination time: Fri Jan 31 14:50:57 MST 2014 Waiting for updates. Problem with vm-035: Unexpected issue STDERR: 2014-01-31 13:48:44,412 - WARNING - no qemu_img configuration, copy-on-write support is disabled libvir: QEMU error : Domain not found: no domain with matching name 'wrksp-33' libvir: error : An error occurred, but the cause is unknown 2014-01-31 13:48:45,587 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown 2014-01-31 13:48:45,587 - ERROR - An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/defaults/lvrt/lvrt_common.py", line 123, in create newvm = self._vmm().createXML(xml, 0) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2189, in createXML if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) libvirtError: An error occurred, but the cause is unknown 2014-01-31 13:48:45,589 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 155, in _common_withnetsecurity _common_withtmplease(nic_set, kernel, local_file_set, c, netsecurity, platform, justprint) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 174, in _common_withtmplease platform.create(local_file_set, nic_set, kernel) File "/opt/nimbus/src/python/workspacecontrol/defaults/lvrt/lvrt_common.py", line 128, in create raise UnexpectedError(shorterr) UnexpectedError: Problem creating the VM: An error occurred, but the cause is unknown 2014-01-31 13:48:45,589 - ERROR - Creation problem: going to back out tmp space lease 2014-01-31 13:48:45,589 - ERROR - Backed out tmp space lease 2014-01-31 13:48:45,589 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 137, in _common_withnetbootstrap _common_withnetsecurity(vm_name, nic_set, kernel, local_file_set, p, c, netsecurity, platform, justprint) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 164, in _common_withnetsecurity raise e UnexpectedError: Problem creating the VM: An error occurred, but the cause is unknown 2014-01-31 13:48:45,589 - ERROR - Creation problem: going to back out net security 2014-01-31 13:48:45,606 - ERROR - Backed out net security 2014-01-31 13:48:45,606 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 119, in _common_withnics _common_withnetbootstrap(vm_name, nic_set, kernel, local_file_set, p, c, netsecurity, platform, justprint) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 146, in _common_withnetbootstrap raise e UnexpectedError: Problem creating the VM: An error occurred, but the cause is unknown 2014-01-31 13:48:45,607 - ERROR - Creation problem: going to back out net bootstrap 2014-01-31 13:48:45,607 - ERROR - Backed out net bootstrap 2014-01-31 13:48:45,607 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 96, in _common _common_withnics(vm_name, nic_set, kernel, local_file_set, p, c, localnet, netbootstrap, netsecurity, platform, justprint) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 128, in _common_withnics raise e UnexpectedError: Problem creating the VM: An error occurred, but the cause is unknown 2014-01-31 13:48:45,607 - ERROR - Creation problem: going to back out net leases 2014-01-31 13:48:45,607 - ERROR - Backed out net leases 2014-01-31 13:48:45,608 - ERROR - Problem creating the VM: An error occurred, but the cause is unknown Traceback (most recent call last): File "/opt/nimbus/src/python/workspacecontrol/main/wc_core.py", line 79, in core _core(vm_name, action, p, c) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core.py", line 168, in _core wc_core_creation.create(vm_name, p, c, async, editing, images, kernels, localnet, netbootstrap, netlease, netsecurity, persistence, platform) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 16, in create _create_local(vm_name, p, c, async, editing, images, kernels, localnet, netbootstrap, netlease, netsecurity, persistence, platform) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 31, in _create_local _common(local_file_set, vm_name, p, c, editing, kernels, localnet, netbootstrap, netlease, netsecurity, persistence, platform, justprint=justprint) File "/opt/nimbus/src/python/workspacecontrol/main/wc_core_creation.py", line 107, in _common raise e UnexpectedError: Problem creating the VM: An error occurred, but the cause is unknown Problem executing: Problem creating the VM: An error occurred, but the cause is unknown Exiting with error code: 4 Workspace "vm-035" did NOT reach target state "Running" Problem running 'vm-035'. --------------------------------------------------------------------------------------------------------------------------------------------- I checked /var/log/libvirtd.log, and found the following: --------------------------------------------------------------------------------------------------------------------------------------------- 2014-01-31 20:48:39.311+0000: 2888: info : libvirt version: 0.9.8 2014-01-31 20:48:39.311+0000: 2888: error : virNetSocketReadWire:1006 : End of file while reading data: Input/output error --------------------------------------------------------------------------------------------------------------------------------------------- I don't know if this is relevant, but I also noticed this warning when creating the VM through the test scripts mentioned above: --------------------------------------------------------------------------------------------------------------------------------------------- 2014-01-31 05:41:44.018+0000: 1351: warning : qemuDomainObjTaint:1134 : Domain id=1 name='control-test' uuid=95f2d398-6b98-5359-7597-b0f596aae996 is tainted: high-privileges --------------------------------------------------------------------------------------------------------------------------------------------- I assumed this was a permissions issue, but I double checked and everything seems in order. I did not have this issue on my previous Nimbus cloud setup. Thanks, Josh

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[libvirt-users] Looks like blockpull does not accept a subset of the entire chain of backing files
by Richard Gomes 01 Feb '14

01 Feb '14

Hello If I'm not terribly mistaken, looks like libvirt 1.2.1 does not provide ability of merging only a subset of the entire chain of backing files. So, if I have a chain like this: root <- a <-b <- c <- d <- active ... and I'd like to obtain a chain like this: root <- c <- d <- active ... looks like it's not supported, since I'm trying the command / //virsh blockpull domain --path /path/to/c --bandwidth 30 --base /path/to/root// (1) / ... but it complains because /--path /path/to/c/ is not recognized, since only /--path /path/to/active/ is acceptable: / //virsh blockpull domain --path /path/to/active --bandwidth 30 --base /path/to/root// (2) / So, command (1) fails but command (2) succeeds. The point is: How could I obtain the results I'm trying to achieve via command (1) ? I'm new to libvirt, but the article below made me think that what I'm trying to do would be possible: http://kashyapc.fedorapeople.org/virt/lc-2012/snapshots-handout.html ( see section on /blockpull/ ) Thoughts? For your information, my environment is: Compiled against library: libvirt 1.2.1 Using library: libvirt 1.2.1 Using API: QEMU 1.2.1 Running hypervisor: QEMU 1.7.0 Running against daemon: 1.2.1 Thanks -- Richard Gomes http://rgomes.info http://www.linkedin.com/in/rgomes mobile: +44(77)9955-6813 inum <http://www.inum.net/>: +883(5100)0800-9804 sip:rgomes@ippi.fr

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[libvirt-users] Dynamically setting permanent memory libvirt-lxc
by mallu mallu 01 Feb '14

01 Feb '14

I'm trying to permanently change memory allocation for a libvirt-lxc domain. So far I tried changing memory in memory.limit_in_bytes under /cgroup/memory/libvirt/lxc/<container>/. This didn't help. It appears that libvirt is not reading changes in cgroup. My requirements are 1) Be able to dynamically change memory of a LXC domain without reboot 2) The memory change must survive LXC domain reboot. Any help would be greatly appreciated

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[libvirt-users] libvirt-sandbox question.
by Christopher Stone 30 Jan '14

30 Jan '14

I hope this question isn't considered too off topic for this list, I am trying to reach the libvirt-sandbox developers, but I could not find a libvirt-sandbox specific mailing list, and it seemed to me that libvirt-sandbox was a part of libvirt itself. I am trying to port libvirt-sandbox to run on a CentOS 6.5 system. This wasn't too hard but, I had to do the following: I have used the CentOS repo addon ElRepo to upgrade the kernel to 3.10.28. CentOS normally runs a 2.6.32 kernel. I upgraded glib2 from 2.36 to 2.38.2. I did this by building 2.38.2 from source and installing it into /usr/local. Thus, the 2.36 version still exists in /lib64 and the normal CentOS applications use this version. I built libvirt 1.2.1 from source and installed it into /usr/local. I used: ./configure --with-lxc --with-selinux --with-secdriver-selinux --prefix=/usr/local I built libvirt-glib 0.1.7 from source and installed it into /usr/local. I used: PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure --prefix=/usr/local I build libvirt-sandbox 0.5.1 from source and installed it into /usr/local. I used: PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure As a test, I am able to run the libvirt lxc helloworld example: [root@scwnet1 lxc_helloworld]# virsh -c lxc:/// define helloworld.xml Domain helloworld defined from helloworld.xml [root@scwnet1 lxc_helloworld]# virsh -c lxc:/// start helloworld Domain helloworld started [root@scwnet1 lxc_helloworld]# virsh -c lxc:/// list Id Name State ---------------------------------------------------- 9819 helloworld running [root@scwnet1 lxc_helloworld]# virsh -c lxc:/// console helloworld Connected to domain helloworld Escape character is ^] sh-4.1# exit exit Next, I try to use libvirt-sandbox, and I get the following error: [root@scwnet1 tests]# /usr/local/bin/virt-sandbox -c lxc:/// /bin/sh Unable to start sandbox: Failed to create domain: unsupported configuration: Unable to find security driver for label selinux My libvirt config.log shows the SELinux security driver as yes: configure:71172: Configuration summary configure:71174: ===================== configure:71176: configure:71178: Drivers configure:71180: configure:71182: Xen: no configure:71184: QEMU: yes configure:71186: UML: yes configure:71188: OpenVZ: yes configure:71190: VMware: yes configure:71192: VBox: yes configure:71194: XenAPI: no configure:71196: xenlight: no configure:71198: LXC: yes configure:71200: PHYP: no configure:71202: ESX: yes configure:71204: Hyper-V: no configure:71206: Parallels: yes configure:71208: Test: yes configure:71210: Remote: yes configure:71212: Network: yes configure:71214: Libvirtd: yes configure:71216: Interface: yes configure:71218: macvtap: yes configure:71220: virtport: yes configure:71222: configure:71224: Storage Drivers configure:71226: configure:71228: Dir: yes configure:71230: FS: yes configure:71232: NetFS: yes configure:71234: LVM: yes configure:71236: iSCSI: yes configure:71238: SCSI: yes configure:71240: mpath: yes configure:71242: Disk: yes configure:71244: RBD: no configure:71246: Sheepdog: no configure:71248: Gluster: no configure:71250: configure:71252: Security Drivers configure:71254: configure:71256: SELinux: yes (/sys/fs/selinux) configure:71258: AppArmor: no (install profiles: no) configure:71260: configure:71262: Driver Loadable Modules configure:71264: configure:71267: dlopen: -ldl configure:71273: configure:71275: Libraries configure:71277: configure:71296: apparmor: no configure:71326: attr: yes (CFLAGS='' LIBS='-lattr') configure:71356: audit: yes (CFLAGS='' LIBS='-laudit') configure:71386: avahi: yes (CFLAGS='-D_REENTRANT ' LIBS='-lavahi-common -lavahi-client ') configure:71416: blkid: yes (CFLAGS='-I/usr/include/blkid -I/usr/include/uuid ' LIBS='-lblkid ') configure:71446: capng: yes (CFLAGS='' LIBS='-lcap-ng') configure:71476: curl: yes (CFLAGS='-DCURL_DISABLE_TYPECHECK ' LIBS='-lcurl ') configure:71506: dbus: no configure:71536: fuse: no configure:71566: glusterfs: no configure:71596: hal: no configure:71626: netcf: yes (CFLAGS=' ' LIBS='-lnetcf ') configure:71656: numactl: yes (CFLAGS='' LIBS='-lnuma') configure:71686: openwsman: no configure:71716: pciaccess: yes (CFLAGS=' ' LIBS='-lpciaccess ') configure:71746: readline: yes (CFLAGS='' LIBS='-lreadline') configure:71776: sanlock: yes (CFLAGS='' LIBS='-lsanlock_client') configure:71806: sasl: yes (CFLAGS='' LIBS='-lsasl2') configure:71836: selinux: yes (CFLAGS='' LIBS='-lselinux') configure:71866: ssh2: no configure:71897: udev: yes (CFLAGS=' ' LIBS='-ludev ') configure:71927: yajl: yes (CFLAGS='' LIBS='-lyajl') configure:71940: libxml: -I/usr/include/libxml2 -lxml2 configure:71942: dlopen: -ldl configure:71948: openwsman: no configure:71952: gnutls: -DGCRYPT_NO_DEPRECATED -lgnutls -lgcrypt configure:71958: firewalld: no configure:71965: polkit: /usr/bin/pkcheck (version 1) configure:71976: xen: no configure:71983: xenapi: no configure:71990: xenlight: no configure:71994: pcap: -lpcap configure:72001: nl: -lnl configure:72011: mscom: no configure:72015: xdr: configure:72025: rbd: no configure:72029: configure:72031: Test suite configure:72033: configure:72035: Coverage: no configure:72037: Alloc OOM: no configure:72039: configure:72041: Miscellaneous configure:72043: configure:72045: Debug: yes configure:72047: Use -Werror: no My libvirt capabilites shows this: [root@scwnet1 tests]# virsh -c lxc:/// capabilities <capabilities> <host> <uuid>20b4e77c-3fb8-dc11-968d-c8600070189e</uuid> <cpu> <arch>x86_64</arch> </cpu> <power_management> <suspend_mem/> <suspend_disk/> </power_management> <topology> <cells num='1'> <cell id='0'> <memory unit='KiB'>8334880</memory> <cpus num='4'> <cpu id='0' socket_id='0' core_id='0' siblings='0-1'/> <cpu id='1' socket_id='0' core_id='1' siblings='0-1'/> <cpu id='2' socket_id='0' core_id='2' siblings='2-3'/> <cpu id='3' socket_id='0' core_id='3' siblings='2-3'/> </cpus> </cell> </cells> </topology> <secmodel> <model>none</model> <doi>0</doi> </secmodel> </host> <guest> <os_type>exe</os_type> <arch name='x86_64'> <wordsize>64</wordsize> <emulator>/usr/local/libexec/libvirt_lxc</emulator> <domain type='lxc'> </domain> </arch> </guest> <guest> <os_type>exe</os_type> <arch name='i686'> <wordsize>32</wordsize> <emulator>/usr/local/libexec/libvirt_lxc</emulator> <domain type='lxc'> </domain> </arch> </guest> </capabilities> I am not sure if secmodel none is the problem. Can someone give me some direction on how to fix this? Cheers, Chris.

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