September 2012 - Users - libvirt List Archives

[libvirt-users] some problem with snapshot by libvirt
by xingxing gao 21 Nov '14

21 Nov '14

Hi,all,i am using libvirt to manage my vm,in these days i am testing the libvirt snapshot ,but meet some problem: the snapshot was created from this command: snapshot-create-as win7 --disk-only --diskspec vda,snapshot=external --diskspec hda,snapshot=no but when i tried to revert from the snapshot which created from the above command ,i got error below: virsh # snapshot-revert win7 1338041515 --force error: unsupported configuration: revert to external disk snapshot not supported yet version: virsh # version Compiled against library: libvir 0.9.4 Using library: libvir 0.9.4 Using API: QEMU 0.9.4 Running hypervisor: QEMU 1.0.93

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[libvirt-users] About IBM PowerVM hypervisor support
by Dennis Chen 22 Nov '12

22 Nov '12

Hi, I noticed that libvirt support the following hypervisors currently: * The KVM/QEMU <http://libvirt.org/drvqemu.html> Linux hypervisor * The Xen <http://libvirt.org/drvxen.html> hypervisor on Linux and Solaris hosts. * The LXC <http://libvirt.org/drvlxc.html> Linux container system * The OpenVZ <http://libvirt.org/drvopenvz.html> Linux container system * The User Mode Linux <http://libvirt.org/drvuml.html> paravirtualized kernel * The VirtualBox <http://libvirt.org/drvvbox.html> hypervisor * The VMware ESX and GSX <http://libvirt.org/drvesx.html> hypervisors * The VMware Workstation and Player <http://libvirt.org/drvvmware.html> hypervisors * The Microsoft Hyper-V <http://libvirt.org/drvhyperv.html> hypervisor /"the goal of libvirt: *to provide a common and stable layer sufficient to securely manage domains on a node, possibly remote*."/ My question is, does redhat's libvirt team have the plan to support IBM PowerVM hypervisor? If the answer is NO, what's the reason to make the support for IBM PowerVM hypervisor doesn't make sense... BRs, Dennis

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[libvirt-users] Create and revert to snapshot fails silently after device update on running domain
by Jasper Spit 18 Oct '12

18 Oct '12

Hi list, I'm having an issue with snapshot creation. Scenario: qemu 1.1 libvirt 0.9.12 I create a domain, and start it. The domain has 1 IDE cdrom device defined (see below). When started, I want to mount an ISO file to it. So I do updateDeviceFlags in libvirt-python or update-device in virsh (both have the same problem). This works fine, the ISO image becomes available to the domain. Now I create a snapshot on the still running domain using snapshotCreateXML in libvirt-python or snapshot-create in virsh. The command returns immediately without error (a normal snapshot takes several seconds to complete). If I revert to this snapshot this command also returns immediately without error, but the snapshot is not actually reverted to, the domain remains running in the same state as if nothing had happened (I test this by verifying console output and checking if a testfile is present on the domain). If I do not use the update device commands prior to creating a snapshot, all is well. If I remove the source from the cdrom device using update device, the snapshots work properly again. Any idea what causes this? Steps to reproduce using virsh: virsh # start 4d5d722b-864c-657e-0f39-55d1bafc760e Domain 4d5d722b-864c-657e-0f39-55d1bafc760e started virsh # snapshot-create 4d5d722b-864c-657e-0f39-55d1bafc760e Domain snapshot 1348653920 created virsh # snapshot-revert 4d5d722b-864c-657e-0f39-55d1bafc760e 1348653920 All is good, the snapshot is reverted to properly. Now I update the cdrom device: virsh # update-device 4d5d722b-864c-657e-0f39-55d1bafc760e deb.xml Device updated successfully virsh # snapshot-create 4d5d722b-864c-657e-0f39-55d1bafc760e Domain snapshot 1348654116 created Command returns instantly. virsh # snapshot-revert 4d5d722b-864c-657e-0f39-55d1bafc760e 1348654116 No errors, but the snapshot is not reverted to. Now I remove the <source .../> again and do an update-device. virsh # update-device 4d5d722b-864c-657e-0f39-55d1bafc760e deb-off.xml Device updated successfully virsh # snapshot-create 4d5d722b-864c-657e-0f39-55d1bafc760e Domain snapshot 1348654540 created virsh # snapshot-revert 4d5d722b-864c-657e-0f39-55d1bafc760e 1348654540 Snapshot is created and reverted to properly. virsh # dumpxml 4d5d722b-864c-657e-0f39-55d1bafc760e <domain type='kvm' id='135'> <name>4d5d722b-864c-657e-0f39-55d1bafc760e</name> <uuid>4d5d722b-864c-657e-0f39-55d1bafc760e</uuid> <memory unit='KiB'>786432</memory> <currentMemory unit='KiB'>786432</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64' machine='pc-1.1'>hvm</type> <boot dev='hd'/> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </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='cdrom'> <driver name='qemu' type='raw'/> <source file='/data/images/debian-live-6.0.4-amd64-standard.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' target='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/data/domains/2f8baacd-563c-b747-b621-c0ddb4aa84bd'/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <controller type='usb' index='0'> <alias name='usb0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:39:86:29'/> <source bridge='br0'/> <target dev='vnet2'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <input type='tablet' bus='usb'> <alias name='input0'/> </input> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5902' autoport='yes'/> <video> <model type='vga' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </memballoon> </devices> <seclabel type='none'/> </domain> deb.xml: <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/data/images/debian-live-6.0.4-amd64-standard.iso'/> <target dev='hdc' bus='ide'/> </disk> deb-off.xml: <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> </disk> Thanks much, - Jasper

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[libvirt-users] can not connect hypervisor using libvirt-0.9.8 on windows
by xuanmao_001 09 Oct '12

09 Oct '12

Hi, Eric: I compiled libvirt-0.9.8 source code with the msys environment on windows xp. the compiltion was successed. but when I connect the remote host using virsh.exe, it occured error like: error: Failed to connect to the hypervisor error: Unable to set close-on-exec flag: No such file or directory Is there something wrong? give me some help, thanks! xuanmao_001

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[libvirt-users] alias as volume names for multipath storrage pools
by Michael Menge 05 Oct '12

05 Oct '12

Hi, I use virt-manager 0.9.4 and libvirt 0.9.13-0 and have configured a multipath storage pool. In the storage management window of virtmanager, only the short device name "dm-1" is shown as volumename. Is there a way to display the alias name or the path in thes storage window, as example_vm_root oder /dev/mapper/example_vm_root is more informative as dm-1 Regards Michael Menge -------------------------------------------------------------------------------- M.Menge Tel.: (49) 7071/29-70316 Universität Tübingen Fax.: (49) 7071/29-5912 Zentrum für Datenverarbeitung mail: michael.menge(a)zdv.uni-tuebingen.de Wächterstraße 76 72074 Tübingen

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[libvirt-users] High availability for guests
by Renich Bon Ciric 29 Sep '12

29 Sep '12

Hello, What is the recommended way to offer high availability to Guests? For example, let host1, host2 and host3 be libvirt and KVM/Qemu enabled. If I start a guest in host1, how can I guarantee that it will stay online if host1 goes down? GlusterFS, for example, would take care of storage; but what about CPU and RAM? How can this be accomplished? Thank you for any feedback or comment in adavance. -- It's hard to be free... but I love to struggle. Love isn't asked for; it's just given. Respect isn't asked for; it's earned! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/

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[libvirt-users] Inconsistent iptables forwarding rules for virtual networks?
by Marwan Tanager 27 Sep '12

27 Sep '12

Hi everyone. Those are the iptables forwarding rules associated with the two virtual networks on my machine: ----------------------------------------------------------------------------------------- -A FORWARD -d 192.168.100.0/24 -o virbr1 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.100.0/24 -i virbr1 -j ACCEPT -A FORWARD -i virbr1 -o virbr1 -j ACCEPT -A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT -A FORWARD -i virbr0 -o virbr0 -j ACCEPT -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable ----------------------------------------------------------------------------------------- Using this setup I can ping from a guest on 192.168.100.0/24 to a guest on 192.168.122.0/24, however the reverse is not possible (I get 'port unreachable' icmp messages). This is caused by the fourth rule, which rejects packets forwarded to virbr1. Moving the fourth rule to the end, obviously eliminates this problem. So, is this default setup intentional for some reason, or should the rules just be rearranged by libvirt, so that any rule on the FORWARD chain which has a REJECT target (which reject forwarding "to" some virtual interface) would go to the end of the chain, and thus, allowing the virtual networks to reach each other by default? Thanks. Marwan

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[libvirt-users] minor swap issue ....
by William A. Mahaffey III 25 Sep '12

25 Sep '12

.... I have a CentOS 5.n VM running on a Fedora 14 server/host, installed using virt-manager, pretty plain vanilla. I use it to compile binaries to run under RHEL/CentOS 5.n OS. I occasionally notice that when the VM gets paged out by the server, it takes several minutes to get it back in :-/ (see below). On the host, logged in to a shell through a terminal window, this A.M.: [wam@Q6600, test, 10:09:08am] 3384 % /sbin/swapon -s ; free -m ; uname -a ; /sbin/hwclock -r ; date Filename Type Size Used Priority /dev/md2 partition 16773116 1967524 -1 total used free shared buffers cached Mem: 7993 7932 61 0 11 7176 -/+ buffers/cache: 744 7249 Swap: 16379 1921 14458 Linux Q6600 2.6.35.14-106.fc14.x86_64 #1 SMP Wed Nov 23 13:07:52 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Tue Sep 25 10:09:11 2012 -0.890900 seconds Tue Sep 25 10:09:11 CDT 2012 [wam@Q6600, test, 10:09:11am] 3385 % /sbin/swapon -s ; free -m ; uname -a ; /sbin/hwclock -r ; date Filename Type Size Used Priority /dev/md2 partition 16773116 1415136 -1 total used free shared buffers cached Mem: 7993 7939 54 0 12 6358 -/+ buffers/cache: 1568 6425 Swap: 16379 1381 14998 Linux Q6600 2.6.35.14-106.fc14.x86_64 #1 SMP Wed Nov 23 13:07:52 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Tue Sep 25 10:14:09 2012 -0.281487 seconds Tue Sep 25 10:14:09 CDT 2012 [wam@Q6600, test, 10:14:09am] 3385 % on the VM, logged in through a different terminal window: [wam@centos-5, CFD, 10:09:14am] 6507 % [wam@centos-5, CFD, 10:09:14am] 6507 % ( cd ../Utils/ ; make extra ) ; cd . make[1]: Entering directory `/home/wam/dev/CFD/Utils' make[2]: Entering directory `/home/wam/dev/CFD/Utils' /home/wam/dev/CFD/Utils/../lib/R4/SSE2/libutils.a up to date. make[2]: Leaving directory `/home/wam/dev/CFD/Utils' make[2]: Entering directory `/home/wam/dev/CFD/Utils' /home/wam/dev/CFD/Utils/../lib/R8/SSE2/libutils.a up to date. make[2]: Leaving directory `/home/wam/dev/CFD/Utils' make[1]: Leaving directory `/home/wam/dev/CFD/Utils' cd /net/cube/home/wam/V8/Cnx/test/junk/cart/unstaggered/bfc/utils; icc -c -DNDEBUG -DUNDER_SCORE_SYS -DLOSE_GAMMAL -gcc-version=340 -gcc-name=gcc34 -fabi-version=2 -I /net/cube/home/wam/V8/Cnx/test/junk/cart/unstaggered/bfc/include -wd138,167,186,266,279,880,1418,1419,2330,2331 -O3 -ip -opt-prefetch -parallel -opt-multi-version-aggressive -xSSE2 -DP64_BIT test.cpp cd /net/cube/home/wam/V8/Cnx/test/junk/cart/unstaggered/bfc/utils; icc -o /home/wam/bin/checkout -parallel -mkl=parallel -Wl,-s test.o -L /home/wam/dev/CFD/Utils/../lib/R4/SSE2 -Wl,--start-group -lutils -lMemIO -Wl,--end-group && \rm -f test.o Done with extra. [wam@centos-5, CFD, 10:12:36am] 6508 % i.e. it took 3+ min. to get back to the prompt for this command (usually about 5 sec.) .... This isn't a show-stopped by any means, but it is irritating. From the timestamps & data from the host & guest, apparently all of that was used up swapping the guest back in. Is there any way to either prioritize the VM to not get swapped out, or preferentially swapped back in :-) ? TIA for any pointers .... -- William A. Mahaffey III ---------------------------------------------------------------------- "The M1 Garand is without doubt the finest implement of war ever devised by man." -- Gen. George S. Patton Jr.

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[libvirt-users] Xen Paravirtualized Guest and drive order
by Cyril Peponnet 25 Sep '12

25 Sep '12

Hello, When defining a paravirtulized xen guest and use pygrub as a loader, it will seek into the first drive defined in order to fetch the kernel and boot the machine. As the boot tag is not used, and boot order seems to have no effect, I try to define the disk I want the kernel been seeked as first in my xml definition. Unfortunately, after defining the vm, the order is not kept. As I have seen, the order is made by alphabetical order. I mean if I define a disk as xvda and a cdrom as xvdc, the first drive will be the disk xvda. To be able to make the cdrom first I need to define xvda as a target for cdrom and xvdb or xvdc ... for the disk. It is not really usefull... Is there any way to keep the order of drive as defined in the xml config file ? Thanks

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[libvirt-users] Quadratic function-like call delay
by Andrey Korolyov 24 Sep '12

24 Sep '12

Hi, There is a quite annoying thing, don`t sure if I can call it a bug. How to reproduce: - start a bunch of VMs, - stop libvirt, - start libvirt and immediately issue any call, say, 'virsh version', - delay until call completion may be fitted nearly as quadratic function from number of running VMs, qemu-kvm in my case (see link below). After this delay passed, any calls executed without slowdown, so problem is only a 'dead gap' after restarting service. http://xdel.ru/downloads/libvirt.png

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[libvirt-users] VLANs with Open vSwitch in libvirt 0.10.1
by Scott Lowe 23 Sep '12

23 Sep '12

Hello all, I'm trying to take advantage of libvirt's VLAN and OVS support in the 0.10.1 release and consistently getting an "error: internal error corrupted profileid string" when starting a guest. I've defined a network using virsh; the configuration looks like this: <network> <name>ovs-network</name> <uuid>40c32a20-9eed-238c-895c-b9af7eaf72f1</uuid> <forward mode='bridge'/> <bridge name='ovsbr0' /> <virtualport type='openvswitch'/> <portgroup name='green' default='yes'> <virtualport> <parameters profileid='green-profile'/> </virtualport> </portgroup> <portgroup name='blue'> <vlan> <tag id='2'/> </vlan> <virtualport> <parameters profileid='blue-profile'/> </virtualport> </portgroup> </network> This network is listed when I run "virsh net-list --all" and is listed as active. In a guest, the network is defined like this: <interface type='network'> <mac address='52:54:00:a8:bf:8f'/> <source network='ovs-network'/> <virtualport type='openvswitch'> <parameters interfaceid='2913d936-6771-4983-1cdf-753c45ac24d2' profileid='green-profile'/> </virtualport> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </interface> This is running on Ubuntu 12.04.1 (and QEMU-KVM) with manually compiled libvirt 0.10.1 and OVS version 1.4.0+build0. For troubleshooting, I've undefined/re-define both the network and the guest, and restarted libvirtd in between. I've also tried different network names, different portgroup names, and different profileid's. I'm sure I'm missing something obvious but I can't seem to find it--any suggestions? Any and all help is appreciated. -- Scott

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[libvirt-users] prefer_msi=on in xml file
by klak2 23 Sep '12

23 Sep '12

Hello, here is a problem with KVM passthrough of TechnoTrend S2-6400. Bug report is done. The last answer of the debian maintainer: --> Please check with lspci -vv whenever your device is MSI-capable, --> and if yes, try to add prefer_msi=on to the pci-assign device --> argument -- like, from your original report, --> --> -device pci- assign,host=08:00.0,id=hostdev0,configfd=23,bus=pci.0,addr=0xa,prefer_msi=on --> --> I don't know how to add this to libvirt however, maybe they have --> some knobs for that nowadays. and now my question: How do I add the parameter "prefer_msi=on" to the xml file? Thank and greets klak2

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[libvirt-users] sharing read-only LOCAL disks among KVM guests
by Amos Shapira 23 Sep '12

23 Sep '12

Hello, Is it possible to share a single host's Logical Volume among multiple local KVM guests which mount it read-only? I'm asking this because I have an idea to run multiple idential KVM guests (they all have exactly the same software installed on them), booting them from a shared local Logical Volume read-only root file system, or alternatively let them share the bulk of the software (/usr, /opt, /lib) from a common KVM host Logical volume. Is this possible? All my searches so far failed to turn up anything like this. Would it be possible using qcow2 instead of raw LV? If so - would it be worth the performance hit of switching from LV to qcow2? The motivation for this is two-fold: 1. Speed-up - I suspect that sharing the same disk block among all KVM agents (we currently have 14 KVM guests on each server) should lead to better cache utilisation and reduce disk access. Also the cost of maintaining the mutiple identical servers and keeping them up to date could be eating into our server's resource usage. 2. Maintenance - if I get to share the common disk image among all of them then I only need to install/update it once instead of once for each KVM guest (we already use Puppet but it doesn't mean it comes for free). Thanks, --Amos

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[libvirt-users] picking a NUMA cell for pinning using virsh freecell
by Edoardo Comar 21 Sep '12

21 Sep '12

Hi I'd want to pin the vcpu of a guest to a pcpu. the docs clearly say https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/h… "Locking a guest to a particular NUMA node offers no benefit if that node does not have sufficient free memory for that guest. libvirt stores information on the free memory available on each node. Use the virsh freecell --all command to display the free memory on all NUMA nodes " I have tried to look at what freecell returns and heuristically its total across cells looks roughly the same value returned by the 'free' command but without discounting buffers and cache. While free is able to show the value when buffers/cache are taken into account, free is not able to apportion that to NUMA cells. So is it really a valid strategy to choose the NUMA cell for pinning vcpus looking at virsh freecell or ideally we'd need those values adjusted with buffers+cache ? And if so how could one do that ? -------------------------------------------------- regards, Edoardo Comar IBM SWG UK - Hursley JTC ecomar(a)uk.ibm.com Tel +44 (0)1962 81 5576 (external) 245576 (internal) IBM UK Ltd, Hursley, SO21 2JN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU

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[libvirt-users] virsh list not working with xen 4
by Rogério Vinhal Nunes 21 Sep '12

21 Sep '12

Hi, I'm having some trouble to get libvirt to show the correct power state of my virtual machines. I'm using Ubuntu 10.04 + Xen 4.1.1 + libvirt 0.8.8. virsh list --all only shows turned off machines registered in xend. If I turn them on, they just "disappear", and when I start machines directly from xml, they just doesn't appear at all. Libvirt is correctly connecting to xen as I can use the other commands fine, just the list option doesn't seem to work at all. What can I do to change that? # virsh version Compiled against library: libvir 0.8.8 Using library: libvir 0.8.8 Using API: Xen 3.0.1 Running hypervisor: Xen 4.1.0

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[libvirt-users] Xen domains appear randomly
by Mathias Gaunard 21 Sep '12

21 Sep '12

Hi, I have a problem with libvirt or at least with virt-manager and virsh. I have created Xen domains with them, and they do exist and are running without problems, which I can attest by using Xen native tools. However, depending on how I can connect to the machine (direct xen, xen+ssh), and depending on the user I log in as, I may or may not see the domains, or I may or may not be able to configure storage. I am running Debian Wheezy and using the libvirt version from the repositories. Any idea of how I could try to troubleshoot this problem?

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[libvirt-users] Network inoperable with QEMU arm example image
by Larry Brown 21 Sep '12

21 Sep '12

Is this thing on? I posted the message below twice now with no response by anyone. Can someone tell me what I'm doing wrong or at least let me know this is not something they've ever seen so I know my posts are being viewed by those in the know? I'll try replicating the install process on another machine with hopes it will work there, but this is my desktop and I'd really like to have it run here rather than running a separate machine just to run the VM in. (That is provided it will run anywhere using these installation mechanisms) "I am running Fedora 16 64bit and installed libvirt. I have the VM running with arm emulation with this one issue I can't figure out. I used Virtual Machine Manager to manage the VM and can access its console there. The Ethernet appears to be eth1 and the guest can set an IP on it etc. However, I cannot see any traffic from the Host when dumping any of the interfaces. I've tried several combinations of network setups using the GUI and none appear to work. Optimally I'd like to bridge to my primary interface (em1) and be able to pull an address and talk directly to my network so I can download packages etc while in the VM. I tried setting up networking in that fashion with: Source Device : em1 with macvtap Device Model: Hypervisor Default Source Mode: Bridge but alas I cannot pull dhcp nor can I set a static address and ping other interfaces on the network. It also appears that every time I start the VM it creates another vnetX interface. One of the troubleshooting pages I came across listed all the tools but nothing about what to look for: 1) virsh net-list --all Name State Autostart ----------------------------------------- default active yes 2) brctl show bridge name bridge id STP enabled interfaces virbr0 8000.52540029e6c7 yes virbr0-nic vnet0 vnet1 vnet2 vnet3 vnet4 3) sysctl net.bridge.bridge-nf-call-iptables sysctl net.bridge.bridge-nf-call-iptables = 1 4) iptables -L -v -n Chain INPUT (policy ACCEPT 767K packets, 189M bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:53 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:67 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:67 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- * virbr0 0.0.0.0/0 192.168.122.0/24 state RELATED,ESTABLISHED 0 0 ACCEPT all -- virbr0 * 192.168.122.0/24 0.0.0.0/0 0 0 ACCEPT all -- virbr0 virbr0 0.0.0.0/0 0.0.0.0/0 0 0 REJECT all -- * virbr0 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable 0 0 REJECT all -- virbr0 * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT 532K packets, 79M bytes) pkts bytes target prot opt in out source destination 5) ps -ef | grep dnsmasq nobody 12382 1 0 Sep11 ? 00:00:00 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override 6) ifconfig -a em1 Link encap:Ethernet HWaddr 00:19:B9:48:2B:BA inet addr:10.45.212.46 Bcast:10.45.212.255 Mask:255.255.255.0 inet6 addr: fe80::219:b9ff:fe48:2bba/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19048593 errors:95686 dropped:154 overruns:0 frame:98437 TX packets:10619346 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:12559170813 (11.6 GiB) TX bytes:1700214519 (1.5 GiB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2978074 errors:0 dropped:0 overruns:0 frame:0 TX packets:2978074 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:847201395 (807.9 MiB) TX bytes:847201395 (807.9 MiB) macvtap0 Link encap:Ethernet HWaddr 52:54:00:AC:7F:0C inet6 addr: fe80::5054:ff:feac:7f0c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:294814 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:42804350 (40.8 MiB) TX bytes:468 (468.0 b) virbr0 Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:621 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:43217 (42.2 KiB) virbr0-nic Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vnet0 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:38159 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1995337 (1.9 MiB) vnet1 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:37299 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1949439 (1.8 MiB) vnet2 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:36154 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1888745 (1.8 MiB) vnet3 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:35068 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1832375 (1.7 MiB) vnet4 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:207 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:10896 (10.6 KiB) 7) cat /proc/sys/net/ipv4/ip_forward 1 Any help I can get to resolve this would be greatly appreciated. Very frustrating... Larry

1 0

[libvirt-users] Article about libvirt and audit subsystem
by Marcelo Cerri 21 Sep '12

21 Sep '12

Hi, Sometime ago I wrote an article about libvirt describing how the Linux audit subsystem can be used to track qemu guest's life-cycle. I think this is a topic that can be useful for many people here and so I'm forwarding the URL: http://www.ibm.com/developerworks/linux/library/l-kvm-libvirt-audit/index.h… Regards, Marcelo Cerri

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Re: [libvirt-users] How to pass info to a guest?
by Renich Bon Ciric 20 Sep '12

20 Sep '12

On Thu, Sep 20, 2012 at 12:09 PM, Andrew Cathrow <acathrow(a)redhat.com> wrote: > So you really want to run apt commands on fedora ;-) > > ssh stuff should work fine for you. LOL, ok, you're right. Anyway, thinking it over, I need to apply these injections every time I boot. If the user updates his/her VNC password or rsa-id.pub file on the outside, I need it synced on the inside.

1 0

[libvirt-users] How to pass info to a guest?
by Renich Bon Ciric 20 Sep '12

20 Sep '12

Hello, I would love to be able to pass information to a Guest. For example: - I'd love to sync the root password with the VNC/Spice one - I'd like to be able to inject stuff to /root/.ssh/authorized_keys All of these at boot time. How would I do it? I'd make these files/strings available in the BIOS or something; maybe some kind of storage local to the host and guest as well. Then, I'd create a systemd script that checks these and syncs stuff @ reboot time. I don't know how to make this local storage available or if it is doable to insert this info into some BIOS string; obtainable with dmidecode or something. It would be awesome if this could be dynamic as well. Any feedback is appreciated! -- It's hard to be free... but I love to struggle. Love isn't asked for; it's just given. Respect isn't asked for; it's earned! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/

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[libvirt-users] How to migrate over TCP without certs
by Renich Bon Ciric 20 Sep '12

20 Sep '12

Hey guys, I have a private network and I trust it! /me hides behind trees... So, in order to exercise my trust, I wanna migrate guests over TCP; with and without shared storage. This is: - I want to migrate from host1 to host2; which have shared storage; over TCP without certs - I want to migrate from host1 to host99, which don't have shared storage, over TCP without certs I am asking because, every time I try anythng, it complains: error: Cannot read CA certificate '/etc/pki/CA/cacert.pem': No such file or directory If I need to setup this cacert, no problem; point me to it! Anyway, thank you for taking the time to read this email. Fedora 17 x86_64 libvirt-0.9.11.5-3.fc17.x86_64 qemu-kvm-1.0.1-1.fc17.x86_64 private network on vlan2, Dual 10 Gbps bonded (20, perhaps?) -- It's hard to be free... but I love to struggle. Love isn't asked for; it's just given. Respect isn't asked for; it's earned! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/

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[libvirt-users] libvirt network without dns ?
by Scott Moser 20 Sep '12

20 Sep '12

Hey, I've opened a bug against ubuntu at [1]. I realize this is probably not a high priority, but I was just curious if it is possible to have libvirt configure a network and *not* run a DNS server on it (dnsmasq). Perhaps I could convince libvirt to run dnsmasq with '--port 0'? For my explicit use case i was hoping/expecting to run my own dns and dhcp servers, possibly a specific server bound only to that interface (as dnsmasq does). I just wanted libvirt to create the bridge and setup NAT (and automatically bring the network and any configured guests on it up on boot). Heres what I did. $ BRIDGE="mybr0"; IP="192.168.123.1"; $ cat > $BRIDGE.xml <<EOF <network> <name>$BRIDGE</name> <forward mode='nat'/> <bridge name='$BRIDGE' stp='off' delay='0' /> <ip address='$IP' netmask='255.255.255.0'> </ip> </network> EOF $ sudo virsh -c qemu:///system net-define $BRIDGE.xml $ sudo virsh -c qemu:///system net-start $BRIDGE ## See, after 'start' dnsmasq is running and usable on that interface. $ ps axw | grep dnsm | grep $BRIDGE.pid 9888 ? S 0:00 /usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/mybr0.pid --conf-file= --except-interface lo --listen-address 192.168.123.1 $ dig +short @$IP www.ubuntu.com 91.189.90.41 -- [1] https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1053408

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[libvirt-users] libvirt and lxc and puppet
by erkan yanar 20 Sep '12

20 Sep '12

Hoi, Im running some hosts with a lot of lxc-containers (lxc-execute). Now Im going to have a look into libvirt. So I wonder: Are there some docs about what lxc@libvirt is supporting? Imho you have a subset of the lxc-capabilities with libvirt. Anyone doing by any chance the same and using puppet to deploy (application)containers? So I could get a recommendation which module to use, instead of writing ma own. Regards Erkan -- über den grenzen muß die freiheit wohl wolkenlos sein

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[libvirt-users] libvirt 0.10 and cephx
by Andrey Korolyov 19 Sep '12

19 Sep '12

Hello, Current version adding 'auth_supported=none' at the end of disk path and failing to do an authentication with specified cephx key: <source protocol='rbd' name='rbd/vmxxxxxxxxx:id=qemukvm:key=[cut]==:auth_supported=cephx'> <host name='10.0.0.13' port='6789'/> <host name='10.0.0.10' port='6789'/> <host name='10.0.0.17' port='6789'/> </source> results to: 0.10.1 -drive file=rbd:rbd/vmxxxxxxxxx-YSG:id=qemukvm:key=[cut]:auth_supported=cephx:auth_supported=none:mon_host=10.0.0.13\:6789\;10.0.0.10\:6789\;10.0.0.17\:6789,if=none,id=drive-virtio-disk0,format=raw,bps_rd=80000000,bps_wr=40000000,iops_rd=400,iops_wr=200 0.9.13 -drive file=rbd:rbd/vmxxxxxxxxx-YSG:id=qemukvm:key=[cut]:auth_supported=cephx:mon_host=10.0.0.13\:6789\;10.0.0.10\:6789\;10.0.0.17\:6789,if=none,id=drive-virtio-disk0,format=raw,bps_rd=80000000,bps_wr=40000000,iops_rd=400,iops_wr=200 In ceph-devel I have mentioned incorrectly that both strings are the same due to incorrect grep statement, so all that needs to be fixed is an wrong parameter at the end. Thanks!

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[libvirt-users] start failure with lxc
by Eric J Nelson 19 Sep '12

19 Sep '12

Hello, I think I've done something to my machine, but I can't seem to figure out what. I have now set up a very simple lxc setup to try and test this. Here is the XML: ~> cat vm1GPU.xml <domain type='lxc'> <name>vm1GPU</name> <memory>1020400</memory> <os> <type>exe</type> <init>/bin/sh</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <interface type='bridge'> <source bridge='br0' /> </interface> <filesystem type='mount'> <source dir='/export/vm1gpu/root' /> <target dir='/' /> </filesystem> <console type='pty'/> </devices> </domain> Here is what I get when I try to start it. >sudo virsh --connect lxc:// start vm1GPU error: Failed to start domain vm1GPU error: internal error guest failed to start: 2012-09-19 21:26:48.673+0000: 12702: info : libvirt version: 0.9.10, package: 21.el6_3.4 (CentOS BuildSystem <http://bugs.centos.org>, 2012-08-23-18:28:26, c6b9.bsys.dev.centos.org) 2012-09-19 21:26:48.673+0000: 12702: error : lxcControllerRun:1484 : Failed to query file context on /export/vm1gpu/root: No data available Now if change the target directory to something other than the root it starts right up. Any help would be much appreciated. Thanks! Eric

1 0

[libvirt-users] top output from kvm guest VM
by Harish Patil 19 Sep '12

19 Sep '12

Hello, How can I get 'top' output if the guest VM is stuck spinning and taking 100% cpu. Any other means to debug would be of help. Thanks in adv.

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[libvirt-users] virNodeGetCPUStats and virDomainGetCPUStats have same name in pyton binding as getCPUStats
by Buggi, Harsha 18 Sep '12

18 Sep '12

Hi, virNodeGetCPUStats and virDomainGetCPUStats have same name in pyton binding as getCPUStats virDomainGetCPUStats gets called internally when we use the method getCPUStats. How do we access virNodeGetCPUStats? Regards, Harsha

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[libvirt-users] nwfilter example for security
by Java 18 Sep '12

18 Sep '12

hi, libvirt folks, I'm trying to use libvirt's nwfilter to achieve two goals: 1, by default all ports are closed, means that the virtual machine is isolated. 2, only some selected ports are opened, for example, tcp 22 for ssh, tcp 80 for http web, udp 67 and 68 for dhcp. Can somebody drop me a simple example how to do this in libvirt? I'm using libvirt 0.10.1, the latest version. thanks.

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[libvirt-users] Network inoperable with QEMU arm example image
by Larry Brown 18 Sep '12

18 Sep '12

I posted the following message a few days ago. Does anyone have a minute to look at the output of the troubleshooting tools and advise if they appear correct or if anything stands out as a problem? Or is there another valid direction to go in to find out why the network fails? I'm really stumped here and if there is no other direction to go in I'm dead in the water. So should I just start playing taps? "I am running Fedora 16 64bit and installed libvirt. I have the VM running with arm emulation with this one issue I can't figure out. I used Virtual Machine Manager to manage the VM and can access its console there. The Ethernet appears to be eth1 and the guest can set an IP on it etc. However, I cannot see any traffic from the Host when dumping any of the interfaces. I've tried several combinations of network setups using the GUI and none appear to work. Optimally I'd like to bridge to my primary interface (em1) and be able to pull an address and talk directly to my network so I can download packages etc while in the VM. I tried setting up networking in that fashion with: Source Device : em1 with macvtap Device Model: Hypervisor Default Source Mode: Bridge but alas I cannot pull dhcp nor can I set a static address and ping other interfaces on the network. It also appears that every time I start the VM it creates another vnetX interface. One of the troubleshooting pages I came across listed all the tools but nothing about what to look for: 1) virsh net-list --all Name State Autostart ----------------------------------------- default active yes 2) brctl show bridge name bridge id STP enabled interfaces virbr0 8000.52540029e6c7 yes virbr0-nic vnet0 vnet1 vnet2 vnet3 vnet4 3) sysctl net.bridge.bridge-nf-call-iptables sysctl net.bridge.bridge-nf-call-iptables = 1 4) iptables -L -v -n Chain INPUT (policy ACCEPT 767K packets, 189M bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:53 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:67 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:67 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- * virbr0 0.0.0.0/0 192.168.122.0/24 state RELATED,ESTABLISHED 0 0 ACCEPT all -- virbr0 * 192.168.122.0/24 0.0.0.0/0 0 0 ACCEPT all -- virbr0 virbr0 0.0.0.0/0 0.0.0.0/0 0 0 REJECT all -- * virbr0 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable 0 0 REJECT all -- virbr0 * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT 532K packets, 79M bytes) pkts bytes target prot opt in out source destination 5) ps -ef | grep dnsmasq nobody 12382 1 0 Sep11 ? 00:00:00 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override 6) ifconfig -a em1 Link encap:Ethernet HWaddr 00:19:B9:48:2B:BA inet addr:10.45.212.46 Bcast:10.45.212.255 Mask:255.255.255.0 inet6 addr: fe80::219:b9ff:fe48:2bba/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19048593 errors:95686 dropped:154 overruns:0 frame:98437 TX packets:10619346 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:12559170813 (11.6 GiB) TX bytes:1700214519 (1.5 GiB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2978074 errors:0 dropped:0 overruns:0 frame:0 TX packets:2978074 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:847201395 (807.9 MiB) TX bytes:847201395 (807.9 MiB) macvtap0 Link encap:Ethernet HWaddr 52:54:00:AC:7F:0C inet6 addr: fe80::5054:ff:feac:7f0c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:294814 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:42804350 (40.8 MiB) TX bytes:468 (468.0 b) virbr0 Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:621 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:43217 (42.2 KiB) virbr0-nic Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vnet0 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:38159 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1995337 (1.9 MiB) vnet1 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:37299 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1949439 (1.8 MiB) vnet2 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:36154 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1888745 (1.8 MiB) vnet3 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:35068 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1832375 (1.7 MiB) vnet4 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:207 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:10896 (10.6 KiB) 7) cat /proc/sys/net/ipv4/ip_forward 1 Any help I can get to resolve this would be greatly appreciated. Very frustrating... Larry

1 0

[libvirt-users] network comanline to xml
by basti 18 Sep '12

18 Sep '12

hello, i start a kvm guest with the following comand line: kvm -hda myimage.img -m 1024 -smp 2 \ -net nic -net tap,ifname=tap0,script=no now a plan to start this via libvirt. I have try to set nat via the libvirt-manager but this doesn't connect to network. So i try to use bridge network via the GUI and get a "non supported" error when i use tap0 as "bridge device". How can i "convert" the "-net nic -net tap,ifname=tap0,script=no" to a valid libvirt-xml file? The following example is also buggy: <interface type='network'> <mac address='52:54:00:46:3e:70'/> <source network='default'/> <target dev='tap0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'$ </interface> thanks

2 1

[libvirt-users] Failed to reboot VM via virsh
by xuanmao_001 18 Sep '12

18 Sep '12

Hi, Eric: I want to reboot vm using libvirt reboot api virDomainReboot(). but it occured error like following: "error: Failed to reboot domain abc" "error: Requested operation is not valid: Reboot is not supported without the JSON monitor". I updated qemu version,such as "qemu-kvm-1.2.0", it still like that. can you give me any ideas? my libvirt version: 0.9.8. thanks. xuanmao_001

2 2

[libvirt-users] network comanline to xml
by basti 14 Sep '12

14 Sep '12

hello, i start a kvm guest with the following comand line: kvm -hda myimage.img -m 1024 -smp 2 \ -net nic -net tap,ifname=tap0,script=no now a plan to start this via libvirt. I have try to set nat via the libvirt-manager but this doesn't connect. So i try to use bridge network via the GUI and get a "non supported" error when i use tap0 as "bridge device". How can i "convert" the "-net nic -net tap,ifname=tap0,script=no" to a valid libvirt-xml file? The following example is also buggy: <interface type='network'> <mac address='52:54:00:46:3e:70'/> <source network='default'/> <target dev='tap0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'$ </interface> thanks

1 0

[libvirt-users] How to disable dnsmasq from starting automatically with libvirtd
by Marwan Tanager 13 Sep '12

13 Sep '12

Hi. I have a machine with a local DHCP server and a couple of virtual networks and I've configured the server for each virtual interface, so that I would be able to install VMs on the corresponding subnets using PXE. The problem is that the two DHCP servers (my local server and dnsmasq) are conflicting with each other causing the boot process to either fails or takes ages untill a VM can catch the PXE parameters. Note this output upon starting two VMs on two different subnets: ----------------------------------------------------------------------------- tail -n1 -f </var/log/syslog | egrep -i "dhcpd|dnsmasq-dhcp" Sep 13 05:11:25 host dhcpd: DHCPDISCOVER from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:25 host dhcpd: DHCPDISCOVER from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:26 host dhcpd: DHCPOFFER on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:26 host dhcpd: DHCPOFFER on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:27 host dhcpd: DHCPREQUEST for 192.168.122.194 (192.168.122.1) from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:27 host dhcpd: DHCPACK on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:28 host dnsmasq-dhcp[1882]: DHCPDISCOVER(virbr1) 52:54:00:2a:e0:a6 Sep 13 05:11:28 host dnsmasq-dhcp[1882]: DHCPOFFER(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:11:28 host dhcpd: DHCPREQUEST for 192.168.100.251 (192.168.100.1) from 52:54:00:2a:e0:a6 via virbr1: unknown lease 192.168.100.251. Sep 13 05:11:28 host dnsmasq-dhcp[1882]: DHCPREQUEST(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:11:28 host dnsmasq-dhcp[1882]: DHCPACK(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:11:36 host dnsmasq-dhcp[1882]: DHCPDISCOVER(virbr1) 52:54:00:2a:e0:a6 Sep 13 05:11:36 host dnsmasq-dhcp[1882]: DHCPOFFER(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:11:36 host dhcpd: DHCPDISCOVER from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:36 host dhcpd: DHCPOFFER on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:38 host dnsmasq-dhcp[1882]: DHCPREQUEST(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 Sep 13 05:11:38 host dnsmasq-dhcp[1882]: DHCPNAK(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 address not available Sep 13 05:11:38 host dhcpd: DHCPREQUEST for 192.168.100.107 (192.168.100.1) from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:38 host dhcpd: DHCPACK on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:53 host dhcpd: DHCPDISCOVER from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:53 host dhcpd: DHCPOFFER on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:53 host dhcpd: DHCPREQUEST for 192.168.122.194 (192.168.122.1) from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:53 host dhcpd: DHCPACK on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:12:00 host dhcpd: DHCPDISCOVER from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:12:00 host dhcpd: DHCPOFFER on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:12:00 host dhcpd: DHCPREQUEST for 192.168.122.194 (192.168.122.1) from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:12:00 host dhcpd: DHCPACK on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:12:03 host dhcpd: DHCPDISCOVER from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:03 host dhcpd: DHCPOFFER on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:03 host dhcpd: DHCPREQUEST for 192.168.100.107 (192.168.100.1) from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:03 host dhcpd: DHCPACK on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:06 host dnsmasq-dhcp[1882]: DHCPDISCOVER(virbr1) 52:54:00:2a:e0:a6 Sep 13 05:12:06 host dnsmasq-dhcp[1882]: DHCPOFFER(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:12:06 host dnsmasq-dhcp[1882]: DHCPREQUEST(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 Sep 13 05:12:06 host dnsmasq-dhcp[1882]: DHCPNAK(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 address not available Sep 13 05:12:08 host dhcpd: DHCPDISCOVER from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:08 host dnsmasq-dhcp[1882]: DHCPDISCOVER(virbr1) 52:54:00:2a:e0:a6 Sep 13 05:12:08 host dnsmasq-dhcp[1882]: DHCPOFFER(virbr1) 192.168.100.251 52:54:00:2a:e0:a6 Sep 13 05:12:08 host dhcpd: DHCPOFFER on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:08 host dnsmasq-dhcp[1882]: DHCPREQUEST(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 Sep 13 05:12:08 host dnsmasq-dhcp[1882]: DHCPNAK(virbr1) 192.168.100.107 52:54:00:2a:e0:a6 address not available Sep 13 05:12:08 host dhcpd: DHCPREQUEST for 192.168.100.107 (192.168.100.1) from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:12:08 host dhcpd: DHCPACK on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 ----------------------------------------------------------------------------- So, is there a way to stop dnsmasq from starting automatically when starting libvird? I haven't been able to see any trace of it in the init scripts, and my guessing is that it's started not as a service, but in an ad-hoc manner by libvirt-bin. Checking the dependencies of the libvirt-bin package, I've noticed that dnsmasq is among them. So, my question is whether, starting dnsmasq automatically is something that is hard coded in libvirt-bin or is it just started in some other way that I am not aware of? Any suggestions would be really appreciated. Thanks, Marwan

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[libvirt-users] After a 'virsh blockpull', 'virsh snapshot-list --tree' o/p does not reflect reality
by Kashyap Chamarthy 13 Sep '12

13 Sep '12

Hi (Eric?), A couple of questions while using the 'virsh blockpull' Summary: 1] Created snapshots this way: base<-snap1<-snap2<-snap3 (online, external snapshot --disk-only) 2] I did a 'virsh blockpull' from snap2 into snap3 3] Next, did another 'virsh blockpull' from snap1 into snap3 - Here, 'qemu-img info /path/to/snap3' shows its backing file correctly as snap1. But not 'virsh snapshot-list $domain --tree' . Any hints? Detail: #=========================================# [root@moon ~]# virsh domblklist daisy --details Type Device Target Source ------------------------------------------------ file disk vda /export/vmimgs/daisy.qcow2 [root@moon ~]# #=========================================# [root@moon ~]# virsh snapshot-create-as daisy snap1-daisy "snap1 description" --diskspec vda,file=/export/vmimgs/snap1-daisy.qcow2 --disk-only --atomic Domain snapshot snap1-daisy created [root@moon ~]# #=========================================# [root@moon ~]# virsh snapshot-create-as daisy snap2-daisy "snap2 description" --diskspec vda,file=/export/vmimgs/snap2-daisy.qcow2 --disk-only --atomic Domain snapshot snap2-daisy created [root@moon ~]# #=========================================# [root@moon ~]# virsh snapshot-create-as daisy snap3-daisy "snap3 description" --diskspec vda,file=/export/vmimgs/snap3-daisy.qcow2 --disk-only --atomic Domain snapshot snap3-daisy created #=========================================# [root@moon libvirt-0.10.1-3]# virsh snapshot-list daisy Name Creation Time State ------------------------------------------------------------ clean-rawhide-f17 2011-12-08 14:34:55 +0530 shutoff snap1-daisy 2012-09-12 14:58:18 +0530 disk-snapshot snap2-daisy 2012-09-12 14:59:30 +0530 disk-snapshot snap3-daisy 2012-09-12 15:00:36 +0530 disk-snapshot #=========================================# [root@moon libvirt-0.10.1-3]# virsh snapshot-list daisy --tree clean-rawhide-f17 snap1-daisy | +- snap2-daisy | +- snap3-daisy [root@moon libvirt-0.10.1-3]# #=========================================# => For clarity, listing out the backing files of each image. #=========================================# [root@moon libvirt-0.10.1-3]# qemu-img info /export/vmimgs/snap3-daisy.qcow2 image: /export/vmimgs/snap3-daisy.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 129M cluster_size: 65536 backing file: /export/vmimgs/snap2-daisy.qcow2 #=========================================# [root@moon libvirt-0.10.1-3]# qemu-img info /export/vmimgs/snap2-daisy.qcow2 image: /export/vmimgs/snap2-daisy.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 3.6M cluster_size: 65536 backing file: /export/vmimgs/snap1-daisy.qcow2 #=========================================# [root@moon libvirt-0.10.1-3]# qemu-img info /export/vmimgs/snap1-daisy.qcow2 image: /export/vmimgs/snap1-daisy.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 2.5M cluster_size: 65536 backing file: /export/vmimgs/daisy.qcow2 [root@moon libvirt-0.10.1-3]# #=========================================# => NOTE: we're pulling snap2 data into snap3, by doing a 'virsh blockpull' <= #=========================================# [root@moon libvirt-0.10.1-3]# virsh blockpull --domain daisy --path /export/vmimgs/snap3-daisy.qcow2 --base /export/vmimgs/snap2-daisy.qcow2 --wait --verbose Block Pull: [100 %] Pull complete [root@moon libvirt-0.10.1-3]# #=========================================# [root@moon libvirt-0.10.1-3]# qemu-img info /export/vmimgs/snap3-daisy.qcow2 image: /export/vmimgs/snap3-daisy.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 143M cluster_size: 65536 backing file: /export/vmimgs/snap2-daisy.qcow2 [root@moon libvirt-0.10.1-3]# #=========================================# [root@moon libvirt-0.10.1-3]# virsh snapshot-list daisy --tree clean-rawhide-f17 snap1-daisy | +- snap2-daisy | +- snap3-daisy [root@moon libvirt-0.10.1-3]# #=========================================# => Now, let's pull the data from 'snap1' into 'snap3' (so that we can make 'snap2' redundant, and reduce the snapshot chain. #=========================================# [root@moon libvirt-0.10.1-3]# virsh blockpull --domain daisy --path /export/vmimgs/snap3-daisy.qcow2 --base /export/vmimgs/snap1-daisy.qcow2 --wait --verbose Block Pull: [100 %] Pull complete #=========================================# NOTE: now the snapshot-tree should flattened (as we pulled the data from snap1 into snap3). Let's check by running 'qemu-img' . (so the backing-file is now pointing to snap1, as expected) #=========================================# [root@moon libvirt-0.10.1-3]# qemu-img info /export/vmimgs/snap3-daisy.qcow2 image: /export/vmimgs/snap3-daisy.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 145M cluster_size: 65536 backing file: /export/vmimgs/snap1-daisy.qcow2 [root@moon libvirt-0.10.1-3]# #=========================================# Here, shouldn't 'virsh snapshot-list' --tree be updated as well ?(since 'snap2' is no more the backing file for 'snap3' ?) #=========================================# [root@moon libvirt-0.10.1-3]# virsh snapshot-list daisy --tree clean-rawhide-f17 snap1-daisy | +- snap2-daisy | +- snap3-daisy [root@moon libvirt-0.10.1-3]# #=========================================# Version Details: #=========================================# [root@moon ~]# rpm -q qemu-kvm libvirt; uname -r qemu-kvm-1.2-0.2.20120806git3e430569.fc17.x86_64 libvirt-0.10.1-3.fc17.x86_64 3.5.2-3.fc17.x86_64 [root@moon ~]# #=========================================# Any ideas why the 'tree' isn't updated yet? -- /kashyap

2 2

[libvirt-users] libvirtd on MacOS X
by Waldemar Brodkorb 13 Sep '12

13 Sep '12

Hi, I am trying to run libvirtd on MacOS X, but for now without success. My hypervisor is VirtualBox. Libvirt is installed from ports system. Without libvirtd I can see my virtual machines: LIBVIRT_LOG_FILTERS=1:vbox virsh -c vbox:///session setlocale: No such file or directory 2012-09-13 08:56:43.937+0000: -1: info : libvirt version: 0.9.10 2012-09-13 08:56:43.937+0000: -1: debug : tryLoadOne:163 : Found VBoxXPCOMC.dylib in '/Applications/VirtualBox.app/Contents/MacOS' 2012-09-13 08:56:43.937+0000: -1: debug : vboxRegister:97 : VBoxCGlueInit found API version: 4.1.22 (4001022) 2012-09-13 08:56:43.937+0000: -1: debug : vboxRegister:129 : VirtualBox API version: 4.1 2012-09-13 08:56:43.953+0000: -1: debug : vboxOpen:1048 : in vboxOpen 2012-09-13 08:56:43.962+0000: -1: debug : vboxNetworkOpen:7319 : network initialized 2012-09-13 08:56:43.965+0000: -1: debug : vboxStorageOpen:8137 : vbox storage initialized Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # list Id Name State ---------------------------------------------------- 4 xen01 running 5 xen02 running After starting libvirtd as root, I can connect, but no machines are displayed: LIBVIRT_LOG_FILTERS=1:vbox virsh -c vbox+tcp://192.168.100.83/session setlocale: No such file or directory 2012-09-13 09:02:19.399+0000: -1: info : libvirt version: 0.9.10 2012-09-13 09:02:19.399+0000: -1: debug : tryLoadOne:163 : Found VBoxXPCOMC.dylib in '/Applications/VirtualBox.app/Contents/MacOS' 2012-09-13 09:02:19.399+0000: -1: debug : vboxRegister:97 : VBoxCGlueInit found API version: 4.1.22 (4001022) 2012-09-13 09:02:19.399+0000: -1: debug : vboxRegister:129 : VirtualBox API version: 4.1 Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # list Id Name State ---------------------------------------------------- virsh # When trying to start libvirtd as the user, which started the virtual machines, I get: 1|wbx@neon:~ $ libvirtd -v -l libvirtd: initialization failed Any idea what is wrong here? Do I have to start libvirtd in the context of the user, to see the virtual machines? Thanks in advance for any advice, Waldemar

1 0

[libvirt-users] how make the pool to be inactive?
by zhijun liu 13 Sep '12

13 Sep '12

hi,all I want to delete the storage pool,but libvirt tell me say: > error: Failed to delete pool virtimages > > error: Requested operation is not valid: storage pool is still active > > > the question is how to make the pool's status to be inactive? thanks liuzhijun

2 1

[libvirt-users] Network inoperable with QEMU arm example image
by Larry Brown 12 Sep '12

12 Sep '12

I am running Fedora 16 64bit and installed libvirt. I have the VM running with arm emulation with this one issue I can't figure out. I used Virtual Machine Manager to manage the VM and can access its console there. The Ethernet appears to be eth1 and the guest can set an IP on it etc. However, I cannot see any traffic from the Host when dumping any of the interfaces. I've tried several combinations of network setups using the GUI and none appear to work. Optimally I'd like to bridge to my primary interface (em1) and be able to pull an address and talk directly to my network so I can download packages etc while in the VM. I tried setting up networking in that fashion with: Source Device : em1 with macvtap Device Model: Hypervisor Default Source Mode: Bridge but alas I cannot pull dhcp nor can I set a static address and ping other interfaces on the network. It also appears that every time I start the VM it creates another vnetX interface. One of the troubleshooting pages I came across listed all the tools but nothing about what to look for: 1) virsh net-list --all Name State Autostart ----------------------------------------- default active yes 2) brctl show bridge name bridge id STP enabled interfaces virbr0 8000.52540029e6c7 yes virbr0-nic vnet0 vnet1 vnet2 vnet3 vnet4 3) sysctl net.bridge.bridge-nf-call-iptables sysctl net.bridge.bridge-nf-call-iptables = 1 4) iptables -L -v -n Chain INPUT (policy ACCEPT 767K packets, 189M bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:53 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 0 0 ACCEPT udp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:67 0 0 ACCEPT tcp -- virbr0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:67 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- * virbr0 0.0.0.0/0 192.168.122.0/24 state RELATED,ESTABLISHED 0 0 ACCEPT all -- virbr0 * 192.168.122.0/24 0.0.0.0/0 0 0 ACCEPT all -- virbr0 virbr0 0.0.0.0/0 0.0.0.0/0 0 0 REJECT all -- * virbr0 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable 0 0 REJECT all -- virbr0 * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT 532K packets, 79M bytes) pkts bytes target prot opt in out source destination 5) ps -ef | grep dnsmasq nobody 12382 1 0 Sep11 ? 00:00:00 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override 6) ifconfig -a em1 Link encap:Ethernet HWaddr 00:19:B9:48:2B:BA inet addr:10.45.212.46 Bcast:10.45.212.255 Mask:255.255.255.0 inet6 addr: fe80::219:b9ff:fe48:2bba/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19048593 errors:95686 dropped:154 overruns:0 frame:98437 TX packets:10619346 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:12559170813 (11.6 GiB) TX bytes:1700214519 (1.5 GiB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2978074 errors:0 dropped:0 overruns:0 frame:0 TX packets:2978074 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:847201395 (807.9 MiB) TX bytes:847201395 (807.9 MiB) macvtap0 Link encap:Ethernet HWaddr 52:54:00:AC:7F:0C inet6 addr: fe80::5054:ff:feac:7f0c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:294814 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:42804350 (40.8 MiB) TX bytes:468 (468.0 b) virbr0 Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:621 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:43217 (42.2 KiB) virbr0-nic Link encap:Ethernet HWaddr 52:54:00:29:E6:C7 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vnet0 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:38159 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1995337 (1.9 MiB) vnet1 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:37299 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1949439 (1.8 MiB) vnet2 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:36154 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1888745 (1.8 MiB) vnet3 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:35068 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:1832375 (1.7 MiB) vnet4 Link encap:Ethernet HWaddr FE:54:00:AC:7F:0C BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:207 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:10896 (10.6 KiB) 7) cat /proc/sys/net/ipv4/ip_forward 1 Any help I can get to resolve this would be greatly appreciated. Very frustrating... Larry

1 0

[libvirt-users] virtual networking - virbr0-nic interface
by Shantanu Pavgi 12 Sep '12

12 Sep '12

I need some help in understanding libvirt's virtual networking. I have configured bridged networking (shared physical device) on libvirt+KVM system which is working fine. Also, I am using default NAT network on with virbr0 bridge device and virbr0-nic. I would like to get better understanding on virbr0-nic works in this virtual network configuration. I understand that traffic from virbr0 bridge is forwarded through host system's physical interface eth0 using iptables rules, but I am not following virbr0-nic's working here. I see it attached to virbr0 bridge device though. {{{ $ brctl show bridge name bridge id STP enabled interfaces br0 8000.14feb5dc4f06 no eth0 vnet1 virbr0 8000.525400f5a4ed yes virbr0-nic vnet2 }}} Any pointers on how virbr0 and virbr0-nic work would be really helpful. -- Thanks, Shantanu

2 2

[libvirt-users] problem starting virt-manager
by Lentes, Bernd 12 Sep '12

12 Sep '12

Hi, i try to run virt-manager on a SLES 11 SP1 box. I'm using kernel 2.6.32.12 and virt-manager 0.9.4-106.1.x86_64 . The system is a 64bit box. Here is the output: ========================= pc56846:/media/idg2/SysAdmin_AG_Wurst/software_und_treiber/virt_manager/sles_11_sp1 # virt-manager & [1] 9659 pc56846:/media/idg2/SysAdmin_AG_Wurst/software_und_treiber/virt_manager/sles_11_sp1 # Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 386, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 247, in main from virtManager import cli File "/usr/share/virt-manager/virtManager/cli.py", line 29, in <module> import libvirt File "/usr/lib64/python2.6/site-packages/libvirt.py", line 25, in <module> raise lib_e ImportError: /usr/lib64/libvirt.so.0: undefined symbol: selinux_virtual_domain_context_path [1]+ Exit 1 virt-manager ========================= As you see, virt-manager does not start. Thanks for any hint. Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum 208 HelmholtzZentrum münchen bernd.lentes(a)helmholtz-muenchen.de phone: +49 89 3187 1241 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/idg Wir sollten nicht den Tod fürchten, sondern das schlechte Leben Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH) Ingolstädter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir´in Bärbel Brumme-Bothe Geschäftsführer: Prof. Dr. Günther Wess und Dr. Nikolaus Blum Registergericht: Amtsgericht München HRB 6466 USt-IdNr: DE 129521671

2 4

[libvirt-users] Addition of Eucalyptus to IaaS section
by Eric Choi 12 Sep '12

12 Sep '12

Hello there, I’m not sure if this is the right mailing list, but I’d like to see if we can add Eucalyptus to the IaaS page here: http://libvirt.org/apps.html#iaas Please let me know what is required in order to add us? Thanks very much, *_________________________* *Eric Choi - *Product Marketing *Eucalyptus Systems* www.eucalyptus.com +1 508 348-9778 Follow us on Twitter <http://twitter.com/#!/eucalyptuscloud> Like our Facebook Page<http://www.facebook.com/pages/Eucalyptus-Systems-Inc/164828240204708> Keep up-to-date with us<http://go.eucalyptus.com/Sign-Up-for-Cloud-Computing-News.html?Offer=Other&…> *_________________________*

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[libvirt-users] issue with kvm host crashing
by David M. Barlieb 11 Sep '12

11 Sep '12

I have a dell r910 with rhel6.2 on it and libvirt 0.8. This machine is hosting 12 virtual guests. Every 3 - 5 months the server crashes for no apparent reason. The logs show no kernel panics or other issues causing the crash. The sar logs show a very high context switch count ( approx. 170000). and also high runq-sz (approx. 10 - 18). The cpu's were mostly idle, memory usage low, no swapping, disk io very low as well. This also occurs on a number of other rhel6.2 servers I have using KVM/libvirt/qemu for virtualization. I am curious if anyone else has reported incidents like this. After the crash the servers all come backup, but as you can imagine, it is troubling to see this kind of behavior, especially with these machines hosting production guests. Any help or suggestions on what to look for would be helpful. Regards

1 0

[libvirt-users] dumpxml and edit the vm xml are not match.
by Timon Wang 11 Sep '12

11 Sep '12

I use vnc with password for the vm graphics, it works well. When I want to dump the xml of the vm, I found that the dumped xml does not contains the password properties in the graphics node. But when I use virsh edit to check the xml of the vm, I found the password is displayed. It's it a bug or it's just what libvirt designed to perform. -- Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW Blog: http://www.nohouse.net

2 2

[libvirt-users] Reg: Libvirt API does not return, after qemu-kvm is hungup.
by Alphonse Hansel Anthony 10 Sep '12

10 Sep '12

Hi All, I am facing the following issue, while using Libvirt version 0.8.4. (1) Libvirt API does not return, since the qemu-kvm process is hung up. Based on the information available on mail thread *https://bugzilla.redhat.com/show_bug.cgi?id=676205* (comment 26 - scenario 1), this has been fixed in later version of Libvirt, specifically in RHEL 6.2(libvirt 0.9.4). I have checked the changelogs between version 0.8.7(RHEL 6.1) & 0.9.4 and was not able to identify the related patch information. Please let me know, If I am looking at the wrong version for this fix? Any help in this regard, would be useful. Thanks, Alphonse Comment reference: --SNIP-- 1. The QEMU process has hung. QEMU won't respond to monitor commands. The API call making the first monitor command will wait forever, any subsequent API calls issuing monitor commands will timeout after ~30 seconds with this libvirt error message. This is expected behaviour when QEMU has hung. --SNIP-- In RHEL-6.2 we have done a number of things to address / mitigate these problems - It is now always possible to destroy a guest, even if the monitor is stuck. This lets you destroy a guest in scenario 1, which is not always possible with RHEL-5 libvirt, without restarting libvirtd. --SNIP-- --EOF--

2 1

[libvirt-users] How to properly test watchdog?
by Russell Jones 10 Sep '12

10 Sep '12

CentOS 6 Hi all, I am working on setting up sanlock + watchdog on a 2 node KVM pair. Sanlock is working beautifully and is preventing access to the VM disks by more than one process as it should across both boxes. I am attempting to test failure scenarios involving watchdog, but I am having a hard time getting it to actually reset the server. I am running wdmd with -D so I can see the register requests. When I start sanlock with "service sanlock start" I can see it talk to the wdmd process, as debug logs "register ............ sanlock_daemon". I then send a "kill -9" signal to the daemon to try to simulate a crash, and wdmd logs "client_pid_dead". I would expect Watchdog to see that the PID is dead and as a result start the timer and reboot the server. It does not do that however. Am I misunderstanding how it reacts to TERM requests? How can I properly test wdmd? Thanks for the help!

1 1

[libvirt-users] Kernel unresponsive after booting 700+ vm's on a single host
by Alfred Bratterud 10 Sep '12

10 Sep '12

For a research project we are trying to boot a very large amount of tiny, custom built VM's on KVM/ubuntu. The maximum VM-count achieved was 1000, but with substantial slowness, and eventually kernel failure, while the cpu/memory loads were nowhere near limits. Where is the likely bottleneck? Any solutions, workarounds, hacks or dirty tricks? A few more details here (tumbleweed question), and the possibility of an upvote: http://stackoverflow.com/questions/12243129/kvm-qemu-maximum-vm-count-limit Any tips would be much appreciated! Best regards, Alfred Bratterud Assistant Professor Dept. of Computer Science, Oslo and Akershus University College of Applied Sciences P: (+47) 2245 3263 M: (+47) 4102 0222

2 1

[libvirt-users] libvirt failed to respond after quite a few vnet bridges were created
by Yih Chuang 09 Sep '12

09 Sep '12

During concurrent 80 VM creation, each VM takes two network connections, libvirtd failed to respond. Neither restart libvirtd nor restart CIMOM helped. There were 152 vnet bridges found on this RHEL KVM host. After all the vnet bridges were manually removed, libvirtd responded normally again. Is there a known issue about the number limit of vnet bridges regarding libvirtd? Thank you. --Yih

2 1

[libvirt-users] boot device
by vivek hari 07 Sep '12

07 Sep '12

Hi, I am trying to create a guest machine on xen virtualized environment and install rhel on it by booting from cdrom. I face a issue in booting device. I gave boot order as hd,cdrom. When doing maiden installation, it will find nothing in hard disk and boots from cd. Once installation is completed and when it boots next time it boots from hard disk. It is the expected behaviour. But it fails to boot from hard disk and again boots from cdrom. I also tried specifying per boot device option. I specified disk image as boot order 1 and cd image as boot order 2. But when i power on for the first time, it tries to boot from harddisk and finds nothing there and says " No bootable device. Going to power off in 30 seconds". But expected is, it should boot from cd after trying hard disk. Below is my domain configuration xml file i used to create guest domain. <domain type='xen'> <name>vm-2</name> <memory>1048576</memory> <vcpu>1</vcpu> <os> <type arch='x86_64'>hvm</type> <loader>/usr/lib/xen/boot/hvmloader</loader>  </os> <features> <acpi/> <apic/> <pae/> </features> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/lib/xen/bin/qemu-dm</emulator> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/vm-2.img'/> <target dev='xvda' bus='ide' /> <boot order='1'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <source file='/var/lib/libvirt/images/Rhel53.iso'/> <target dev='hdc' bus='ide' /> <boot order='2'/> <readonly/> <address type='drive' controller='0' bus='1' target='0' unit='0' /> </disk> <interface type='bridge'> <source bridge='br0'/> </interface> <graphics type='vnc' port='-1' autoport='yes'/> </devices> </domain> I don't know where i am going wrong. So need help in resolving this issue. Thanks,

2 4

[libvirt-users] Live Block Migration with additional attached storage
by Chun-Hung Chen 07 Sep '12

07 Sep '12

Dear all, I am planning to use live block migration with one VM running on local disk and also attached additional disk from iSCSI or other shared storage. When block migration, not only local VM disk is copied to the destination but also the attached additional disk from shared storage. It is not desired in this situation. I just want the local VM disk is copied. Is there anyway to do this scenario? Does the concept of storage pool help this? I browse the source code but don't find hints right now. Thanks. Regards, Arnose

2 5

[libvirt-users] QEMU cmdline for default -smp reasonable (qemuBuildSmpArgs) ?
by sanjay 07 Sep '12

07 Sep '12

Hi! When only the vCPU tag is specified, libvirt by default generates a multi-socket topology(sockets=vCPUs,cores=1,threads=1) for the qemu command line. Is there a specific reason behind choice of this default behavior? Could a default of (socket=1,cores=vCPUs,threads=1) would have been a better choice ? -- Regards, Sanjay

2 1

[libvirt-users] defining directly to the wan/lan
by gary artim 07 Sep '12

07 Sep '12

I have a fedora system configured and running with virsh using kvm/qemu. All I want is to have a fixed ipaddress for that virtual machine. I know that there is the Host and Guest sides to the network. The host has virbr0 interface, which i guess is a bridge. Seem when ever I define a interface to the guest with a type=routed it hoses my other interfaces on the host and requires a console reboot -- completely hanging the network. I'm no networking expert, but there must be a simple N step procedure for defining a static IPaddress to route to a guest machine? Has anyone got this working and have a procedure. My network has 2 nic, eth0 and eth1 (10.0.0.253 and 10.0.1.253), one nic has a route to an nfs machine, the other passes through a linux based router to the wan. I can alias the 10.0.1.253 (eth0) to another address in the subnet, like 10.0.1.251 (eth0:0) and would like to use it in some way to connect to the guest -- I have the nat/routing working fine from the router to eth0:0. The network for libvirt is confusing. It not obvious which side (guest or host) your defining and seem to keep multiple definitions around, even after a restart of libvirtd.service. An help would be great!

1 0

[libvirt-users] problem defining ipaddress
by gary artim 07 Sep '12

07 Sep '12

I have a fedora system configured and running with virsh using kvm/qemu. All I want is to have a fixed ipaddress for that virtual machine. I know that there is the Host and Guest sides to the network. The host has virbr0 interface, which i guess is a bridge. Seem when ever I define a interface to the guest with a type=routed it hoses my other interfaces on the host and requires a console reboot -- completely hanging the network. I'm no networking expert, but there must be a simple N step procedure for defining a static IPaddress to route to a guest machine? Has anyone got this working and have a procedure. My network has 2 nic, eth0 and eth1 (10.0.0.253 and 10.0.1.253), one nic has a route to an nfs machine, the other passes through a linux based router to the wan. I can alias the 10.0.1.253 (eth0) to another address in the subnet, like 10.0.1.251 (eth0:0) and would like to use it in some way to connect to the guest -- I have the nat/routing working fine from the router to eth0:0. The network for libvirt is confusing. It not obvious which side (guest or host) your defining and seem to keep multiple definitions around, even after a restart of libvirtd.service. An help would be great! I have read all the libvirt web info and find it difficult to put the steps together...

1 0

[libvirt-users] Fwd: non-blocking virtConnectOpen
by lulin Fan 06 Sep '12

06 Sep '12

Hi I am writing a web-based management tool for KVM, it will manager a lot of remote KVM host, when user add a new connection from the UI, it will take a long time to open the libvirt connection sometimes due to the network problem, during this progress, the management tool will block the request of other user, it is not a good idea for users. BR Fan On 5 September 2012 14:55, Timon Wang <timonwst(a)gmail.com> wrote: > > > On Wed, Sep 5, 2012 at 11:53 AM, lulin Fan <fan.luliin(a)gmail.com> wrote: > > Hi all, > > > > does anybody know how to do non-blocking virtConnectOpen? does libvirt > > support it or not cause I can't find any document about it? or should I > need > > create a thread to do it? > > It's worth to use non-blocking? What will you do without connect? If it's > not related with libvirt connection, you can do in it in another thread if > you like. > > > > > > Thanks > > > > Fan > > > > _______________________________________________ > > libvirt-users mailing list > > libvirt-users(a)redhat.com > > https://www.redhat.com/mailman/listinfo/libvirt-users > > > > -- > Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW > Blog: http://www.nohouse.net >

2 1

[libvirt-users] non-blocking virtConnectOpen
by lulin Fan 05 Sep '12

05 Sep '12

Hi all, does anybody know how to do non-blocking virtConnectOpen? does libvirt support it or not cause I can't find any document about it? or should I need create a thread to do it? Thanks Fan

3 2

[libvirt-users] virDomainMemoryPeek: bad behavior under workload
by NoxDaFox 04 Sep '12

04 Sep '12

Greetings, I am working on a platform for analysis automation. I need to run several Virtual Environments concurrently and record information about their behavior. I wrote some months ago about the capability of reading the Memory during the Environment's execution (in paused state). What do I need is the complete linear memory image, byte per byte, nothing special; I will give this output to tools and parsers like Volatility to get the value from it. I looked around and the only way to get the memory in such a way is using the QEMU monitor command `pmemsave`. I am using libvirt through its Python bindings and the virDomainQemuMonitorCommand seems not to be exposed by the API so, as suggested in some mails I read into the mailig list, I switched to virDomainMemoryPeek. Using this function keeps up to 14-16 seconds to read 512Mb of memory with the 64Kb limitation and 2-3 seconds with the 1Mb one; but the most annoying thing is that I can't run several environment concurrently as the function keeps failing. Here's the typical output: File "/home/nox/workspace/NOX/src/NOX/hooks.py", line 134, in trigger hook.trigger(event) File "/home/nox/workspace/NOX/src/NOX/hooks.py", line 33, in trigger self.handlers[event]() File "/home/nox/workspace/NOX/hooks/volatility.py", line 81, in memory_dump for block in Memory(self.ctx): File "/home/see/workspace/NOX/src/NOX/lib/libtools.py", line 179, in next libvirt.VIR_MEMORY_PHYSICAL) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1759, in memoryPeek ret = libvirtmod.virDomainMemoryPeek(self._o, start, size, flags) SystemError: error return without exception set I can't run more than 3 environments concurrently on a Xeon Quad with 8Gb of memory. I guess the RPC reply goes in timeout because the system is under heavy load but I'm not sure as the error output is quite obscure. Is there any solution to this issue? Is it possible to raise the RPC reply timeout value so that, even if slowly, I eventually get the memory dump? If through virsh I use the QEMU `pmemsave` command, I get the memory dump in less than one second; is there any way to obtain the same performance? Thanks anyway for making libvirt the great tool it is! NoxDaFox

2 4

[libvirt-users] Libvirt daemon segfaults when run as root
by Shawn Furrow 04 Sep '12

04 Sep '12

Hi all, For some reason when I run "libvirtd -d" as root it seems to not start. I investigate by running "libvirtd -v" as root and I get a segfault. Here is the output: 2012-08-23 19:01:23.237+0000: 27464: info : libvirt version: 0.10.0 > 2012-08-23 19:01:23.237+0000: 27464: error : virDriverLoadModule:78 : > failed to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so: undefined > symbol: virSecurityManagerGetProcessLabel > 2012-08-23 19:01:23.238+0000: 27464: error : virDriverLoadModule:78 : > failed to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so: undefined > symbol: virSecurityManagerGetProcessLabel > Caught Segmentation violation dumping internal log buffer: > > ====== start of log ===== > 2012-08-23 19:01:23.235+000027464: debug : main:1120 : Decided on pid file > path '/usr/local/var/run/libvirtd.pid' > 2012-08-23 19:01:23.235+000027464: debug : main:1130 : Decided on socket > paths '/usr/local/var/run/libvirt/libvirt-sock' and > '/usr/local/var/run/libvirt/libvirt-sock-ro' > 2012-08-23 19:01:23.235+000027464: debug : main:1168 : Ensuring run dir > '/usr/local/var/run/libvirt' exists > 2012-08-23 19:01:23.235+000027464: debug : virEventRegisterDefaultImpl:204 > : registering default event implementation > 2012-08-23 19:01:23.235+000027464: debug : virEventPollAddHandle:111 : > Used 0 handle slots, adding at least 10 more > 2012-08-23 19:01:23.235+000027464: debug : virEventPollInterruptLocked:697 > : Skip interrupt, 0 0 > 2012-08-23 19:01:23.236+000027464: debug : virEventPollAddHandle:136 : > EVENT_POLL_ADD_HANDLE: watch=1 fd=5 events=1 cb=0x7f323cd415a0 opaque=(nil) > ff=(nil) > 2012-08-23 19:01:23.236+000027464: debug : virEventRegisterImpl:177 : > addHandle=0x7f323cd423d0 updateHandle=0x7f323cd414a0 > removeHandle=0x7f323cd41360 addTimeout=0x7f323cd42220 > updateTimeout=0x7f323cd415e0 removeTimeout=0x7f323cd41260 > 2012-08-23 19:01:23.236+000027464: debug : virNetServerNew:407 : > srv=0xdd8890 refs=1 > 2012-08-23 19:01:23.236+000027464: debug : main:1206 : Dropping privileges > (if required) > 2012-08-23 19:01:23.236+000027464: debug : virDriverModuleInitialize:53 : > Module dir /usr/local/lib/libvirt/connection-driver > 2012-08-23 19:01:23.236+000027464: debug : virDriverLoadModule:66 : Module > load network > 2012-08-23 19:01:23.236+000027464: debug : virRegisterNetworkDriver:564 : > registering Network as network driver 4 > 2012-08-23 19:01:23.236+000027464: debug : virDriverLoadModule:66 : Module > load storage > 2012-08-23 19:01:23.236+000027464: debug : virRegisterStorageDriver:624 : > registering storage as storage driver 4 > 2012-08-23 19:01:23.236+000027464: debug : virDriverLoadModule:66 : Module > load secret > 2012-08-23 19:01:23.237+000027464: debug : virRegisterSecretDriver:684 : > registering secret as secret driver 3 > 2012-08-23 19:01:23.237+000027464: debug : virDriverLoadModule:66 : Module > load nwfilter > 2012-08-23 19:01:23.237+000027464: debug : virRegisterNWFilterDriver:714 : > registering nwfilter as network filter driver 3 > 2012-08-23 19:01:23.237+000027464: debug : virDriverLoadModule:66 : Module > load qemu > 2012-08-23 19:01:23.237+000027464: error : virDriverLoadModule:78 : failed > to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so: undefined > symbol: virSecurityManagerGetProcessLabel > 2012-08-23 19:01:23.238+000027464: debug : virDriverLoadModule:66 : Module > load lxc > 2012-08-23 19:01:23.238+000027464: error : virDriverLoadModule:78 : failed > to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so: undefined > symbol: virSecurityManagerGetProcessLabel > 2012-08-23 19:01:23.238+000027464: debug : virDriverLoadModule:66 : Module > load uml > 2012-08-23 19:01:23.238+000027464: debug : virRegisterDriver:732 : > driver=0x7f3232ec7760 name=UML > 2012-08-23 19:01:23.238+000027464: debug : virRegisterDriver:747 : > registering UML as driver 6 > 2012-08-23 19:01:23.238+000027464: debug : virDriverLoadModule:66 : Module > load xen > 2012-08-23 19:01:23.239+000027464: debug : virRegisterDriver:732 : > driver=0x7f3232caad00 name=Xen > 2012-08-23 19:01:23.239+000027464: debug : virRegisterDriver:747 : > registering Xen as driver 7 > 2012-08-23 19:01:23.239+000027464: debug : virNetServerProgramNew:63 : > prog=0xddca40 refs=1 > 2012-08-23 19:01:23.239+000027464: debug : virNetServerProgramRef:84 : > prog=0xddca40 refs=2 > 2012-08-23 19:01:23.239+000027464: debug : virNetServerProgramNew:63 : > prog=0xddcbc0 refs=1 > 2012-08-23 19:01:23.239+000027464: debug : virNetServerProgramRef:84 : > prog=0xddcbc0 refs=2 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollInterruptLocked:697 > : Skip interrupt, 0 0 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollAddHandle:136 : > EVENT_POLL_ADD_HANDLE: watch=2 fd=7 events=1 cb=0x7f323ce241e0 > opaque=0xdd8890 ff=(nil) > 2012-08-23 19:01:23.239+000027464: debug : main:1257 : Attempting to > configure auditing subsystem > 2012-08-23 19:01:23.239+000027464: debug : main:1263 : Proceeding without > auditing > 2012-08-23 19:01:23.239+000027464: debug : virHookCheck:119 : No hook > script /usr/local/etc/libvirt/hooks/daemon > 2012-08-23 19:01:23.239+000027464: debug : virHookCheck:119 : No hook > script /usr/local/etc/libvirt/hooks/qemu > 2012-08-23 19:01:23.239+000027464: debug : virHookCheck:119 : No hook > script /usr/local/etc/libvirt/hooks/lxc > 2012-08-23 19:01:23.239+000027464: debug : daemonSetupNetworking:464 : > Registering unix socket /usr/local/var/run/libvirt/libvirt-sock > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketNew:119 : > localAddr=0x7fff419bf530 remoteAddr=(nil) fd=9 errfd=-1 pid=0 > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketNew:179 : > RPC_SOCKET_NEW: sock=0xddcbf0 refs=1 fd=9 errfd=-1 pid=0 > localAddr=127.0.0.1;0, remoteAddr=(null) > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketRef:713 : > RPC_SOCKET_REF: sock=0xddcbf0 refs=2 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollInterruptLocked:697 > : Skip interrupt, 0 0 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollAddHandle:136 : > EVENT_POLL_ADD_HANDLE: watch=3 fd=9 events=0 cb=0x7f323ce2ab10 > opaque=0xddcbf0 ff=0x7f323ce2ba60 > 2012-08-23 19:01:23.239+000027464: debug : daemonSetupNetworking:474 : > Registering unix socket /usr/local/var/run/libvirt/libvirt-sock-ro > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketNew:119 : > localAddr=0x7fff419bf530 remoteAddr=(nil) fd=10 errfd=-1 pid=0 > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketNew:179 : > RPC_SOCKET_NEW: sock=0xddd430 refs=1 fd=10 errfd=-1 pid=0 > localAddr=127.0.0.1;0, remoteAddr=(null) > 2012-08-23 19:01:23.239+000027464: debug : virNetSocketRef:713 : > RPC_SOCKET_REF: sock=0xddd430 refs=2 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollInterruptLocked:697 > : Skip interrupt, 0 0 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollAddHandle:136 : > EVENT_POLL_ADD_HANDLE: watch=4 fd=10 events=0 cb=0x7f323ce2ab10 > opaque=0xddd430 ff=0x7f323ce2ba60 > 2012-08-23 19:01:23.239+000027464: debug : virNetServerRef:420 : > srv=0xdd8890 refs=2 > 2012-08-23 19:01:23.239+000027464: debug : virNetlinkEventServiceStart:656 > : libnl was not available at build time > 2012-08-23 19:01:23.239+000027464: debug : virNetServerRun:714 : > srv=0xdd8890 quit=0 > 2012-08-23 19:01:23.239+000027464: debug : virEventRunDefaultImpl:244 : > running default event implementation > 2012-08-23 19:01:23.239+000027464: debug : virEventPollCleanupTimeouts:501 > : Cleanup 0 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollCleanupTimeouts:537 > : Found 0 out of 0 timeout slots used, releasing 0 > 2012-08-23 19:01:23.239+000027464: debug : virEventPollCleanupHandles:549 > : Cleanup 4 > 2012-08-23 19:01:23.240+000027464: debug : virEventPollMakePollFDs:378 : > Prepare n=0 w=1, f=5 e=1 d=0 > 2012-08-23 19:01:23.240+000027475: debug : virStateInitialize:798 : > Running global init for Remote state driver > 2012-08-23 19:01:23.240+000027475: debug : virStateInitialize:798 : > Running global init for Network state driver > 2012-08-23 19:01:23.240+000027464: debug : virEventPollMakePollFDs:378 : > Prepare n=1 w=2, f=7 e=1 d=0 > 2012-08-23 19:01:23.240+000027464: debug : virEventPollMakePollFDs:378 : > Prepare n=2 w=3, f=9 e=0 d=0 > 2012-08-23 19:01:23.240+000027464: debug : virEventPollMakePollFDs:378 : > Prepare n=3 w=4, f=10 e=0 d=0 > 2012-08-23 19:01:23.240+000027464: debug : > virEventPollCalculateTimeout:320 : Calculate expiry of 0 timers > 2012-08-23 19:01:23.240+000027464: debug : > virEventPollCalculateTimeout:346 : Timeout at 0 due in -1 ms > 2012-08-23 19:01:23.240+000027464: debug : virEventPollRunOnce:614 : > EVENT_POLL_RUN: nhandles=2 timeout=-1 > > ====== end of log ===== > Segmentation fault/ However, when I run "libvirtd -d" as me, it does not segfault and continues running. However I cannot connect to the libvirt-sock because it gets created at "$HOME/.cache/libvirt/libvirt-sock" but virsh looks for it at "/usr/local/var/run/libvirt-sock". Here is what I get when I run "libvirtd -v" as me: 2012-08-23 19:02:15.145+0000: 27483: info : libvirt version: 0.10.0 > 2012-08-23 19:02:15.145+0000: 27483: error : virDriverLoadModule:78 : > failed to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_qemu.so: undefined > symbol: virSecurityManagerGetProcessLabel > 2012-08-23 19:02:15.145+0000: 27483: error : virDriverLoadModule:78 : > failed to load module > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so > /usr/local/lib/libvirt/connection-driver/libvirt_driver_lxc.so: undefined > symbol: virSecurityManagerGetProcessLabel Any ideas why this is happening? I am on Ubuntu 10.04 running libvirt 0.10.0 with qemu-kvm 1.1 Thanks, Shawn -- Virginia Tech Bradley Department of Electrical and Computer Engineering B.S. Electrical Engineering B.S. Computer Engineering

2 1

Re: [libvirt-users] about open vswitch supporting？
by yue wang 04 Sep '12

04 Sep '12

On Tue, Sep 4, 2012 at 2:20 PM, yue wang <heuye.wang(a)gmail.com> wrote: > it seems the 'generic ethernet connection' network doesn't have the > 'virtualport ' element, so there is no way to associate it with an > interface's uuid. > are there any workaround？ > > > On Mon, Sep 3, 2012 at 6:41 PM, yue wang <heuye.wang(a)gmail.com> wrote: > >> Hi: >> >> i used to use linux bridge and specify interfaces by 'Generic ethernet connection' >> mode,after reading this page： >> http://libvirt.org/formatdomain.html#elementsNICS >> i am not sure if i need to change to another mode(eg:'virtual network') to >> specify interfaces when switching linux bridge to open vswitch? >> any suggestions? >> >> >> thanks! >> heuye >> > >

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[libvirt-users] virtual network bug?
by Gene Czarcinski 04 Sep '12

04 Sep '12

I have had a number of occasions lately where a virtual "NAT" network (such as default) has stopped working. I have attempted to stop and then restart the network from the "network details" but the only thing that seems to work is to restart all of the virtual guests which use that network. I don't believe that I should have to do that. Is there some command which will "fix" things? I have had this happen to me a number of times but I am currently uncertain of the cause. Anyone know what is going on? I am not going to bugzilla this until. I do know one way to cause the problem. Disable the network in a virtual machine. Then using virt-manager's connection details menu, stop that (default) network ... then start it up again. Everything sort-of looks ok but it is not. Go back to the virtual machine and re-enable the previously disable network. Nope ... cannot connect. Start another virtual machine which uses that network and it works fine. In the "real world", I can disable a network, then remove a cable, connect the cable back up, re-enable the network and everything works. BTW, NetworkManager is used in all cases. Any ideas? Gene

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[libvirt-users] error: Failed to start pool (already mounted)
by Ragnar Skúlason 03 Sep '12

03 Sep '12

Hi everyone, I have storage-pool that for some reason became inactive (possibly due to an error with pool-refresh in an old version of a Java API binding). I want to restart the pool but am unable to, due to the volume being mounted: # virsh pool-start [uuid] error: Failed to start pool [uuid] error: Requested operation is not valid: Target '/mnt/[uuid]' is already mounted We have tested this with versions 0.9.12 and 0.9.13. Is it possible to bypass this mount check and start the storage pool (forcefully)? Many thanks, Ragnar Skúlason

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