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[libvirt-users] guest fails to start: Error initializing virtio-net-pci
by Ekkard Gerlach 03 Jun '12

03 Jun '12

Hi, squeeze host, winxp guest. guest fails to start: PCI: devfn 24 not available fpr virtio-net-pci, in use by virtio-blk-pci Error initializing virtio-net-pci xml-File: ======== <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/winxp'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> this added: <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/winxp-d'/> <target dev='hdb' bus='virtio'/> <address type='drive' controller='0' bus='0' unit='1'/> </disk> root@squeeze64:~# lsmod | grep virt virtio_balloon 2961 0 virtio_net 10573 0 virtio_blk 4225 0 virtio_pci 5511 0 virtio_ring 3258 1 virtio_pci virtio 3309 4 virtio_balloon,virtio_net,virtio_blk,virtio_pci root@squeeze64:~# dpkg -l | egrep "kvm|qemu|virt" ii etherboot-qemu 5.4.4-9 Bootstrapping for various network adapters (qemu) ii gvfs 1.6.4-3 userspace virtual filesystem - server ii kvm 1:0.12.5+dfsg-5+squeeze8 dummy transitional package from kvm to qemu-kvm ii libvirt-bin 0.8.3-5+squeeze2 the programs for the libvirt library ii libvirt0 0.8.3-5+squeeze2 library for interfacing with different virtualization systems ii python-libvirt 0.8.3-5+squeeze2 libvirt Python bindings ii qemu 0.12.5+dfsg-3squeeze1 fast processor emulator ii qemu-keymaps 0.12.5+dfsg-3squeeze1 QEMU keyboard maps ii qemu-kvm 0.12.5+dfsg-5+squeeze8 Full virtualization on x86 hardware ii qemu-system 0.12.5+dfsg-3squeeze1 QEMU full system emulation binaries ii qemu-user 0.12.5+dfsg-3squeeze1 QEMU user mode emulation binaries ii qemu-utils 0.12.5+dfsg-3squeeze1 QEMU utilities ii virt-manager 0.8.4-8 desktop application for managing virtual machines ii virt-viewer 0.2.1-1 Displaying the graphical console of a virtual machine ii virtinst 0.500.3-2 Programs to create and clone virtual machines I sucessfully added a virtio NIC: <interface type='bridge'> <mac address='52:54:00:a6:fb:ab'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> an I installed the driver from red hat "virtio-win-0.1-22.iso". But adding a virtio disk fails. any ideas? Ekkard

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[libvirt-users] PCI Passthrough, AMD, fails to initialize
by Chris Sanders 03 Jun '12

03 Jun '12

I'm looking for assistance with pci-passthrough on CentOS 6.2. I've installed libvirt version: 0.9.4, package: 23.el6_2.8 from yum. I have a windows XP client setup via virt-manager which boots and runs fine until I attempt to assign a PCI device to it. The error log reads: -----------------/var/log/libvirt/qemu/SageTv.log---------------- 2012-06-02 22:55:07.801: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qemu-kvm -S -M rhel6.2.0 -cpu Opteron_G3,+wdt,+skinit,+osvw,+3dnowprefetch,+cr8legacy,+extapic,+cmp_legacy,+pdpe1gb,+fxsr_opt,+mmxext,+aes,+sse4.2,+sse4.1,+ssse3,+ht,+vme -enable-kvm -m 3048 -smp 2,sockets=2,cores=1,threads=1 -name SageTv -uuid bf80f6a5-1471-9415-e502-88c4999319c7 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/SageTv.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -no-shutdown -boot order=c,menu=on -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/dev/vg_hdd/lv_sagetv,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=24,id=hostnet0,vhost=on,vhostfd=25 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:b9:bf:b0,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -usb -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing -vga std -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device pci-assign,host=04:07.0,id=hostdev0,configfd=26,bus=pci.0,addr=0x8 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 char device redirected to /dev/pts/1 do_spice_init: starting 0.8.3 spice_server_add_interface: SPICE_INTERFACE_MIGRATION spice_server_add_interface: SPICE_INTERFACE_KEYBOARD spice_server_add_interface: SPICE_INTERFACE_MOUSE spice_server_add_interface: SPICE_INTERFACE_PLAYBACK spice_server_add_interface: SPICE_INTERFACE_RECORD Failed to assign device "hostdev0" : Invalid argument qemu-kvm: -device pci-assign,host=04:07.0,id=hostdev0,configfd=26,bus=pci.0,addr=0x8: Device 'pci-assign' could not be initialized 2012-06-02 22:55:08.744: shutting down -----------------/var/log/libvirt/qemu/SageTv.log---------------- After this I find the dmesg shows: -----------------dmesg------------------ pci-stub 0000:04:07.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21 pci-stub 0000:04:07.0: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100002) assign device 4:7.0 failed -----------------dmesg------------------ In case this was an IRQ problem I checked my /proc/interrupts. -----------------interrupts------------------ CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 0: 130 0 0 0 0 0 0 0 IO-APIC-edge timer 1: 0 0 1 1 0 0 0 0 IO-APIC-edge i8042 8: 0 1 0 0 0 0 0 0 IO-APIC-edge rtc0 9: 0 0 0 0 0 0 0 0 IO-APIC-fasteoi acpi 17: 0 0 0 0 0 0 0 0 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2, ehci_hcd:usb3 18: 0 0 0 0 0 0 0 0 IO-APIC-fasteoi ohci_hcd:usb4, ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7 19: 587 2219 1807 588 602 600 687 607 IO-APIC-fasteoi ahci 21: 422 430 7316 402 410 405 429 412 IO-APIC-fasteoi 24: 0 0 0 0 0 0 0 0 PCI-MSI-edge AMD-Vi 25: 12 10 9 20 11 15 15 15 PCI-MSI-edge radeon 26: 7 8 7 10 9 8 10 9 PCI-MSI-edge hda_intel 27: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd 28: 7098 36221 19 24 19 20 28 20 PCI-MSI-edge eth0 NMI: 0 0 0 0 0 0 0 0 Non-maskable interrupts LOC: 22088 22355 9472 12483 6371 11086 5211 7987 Local timer interrupts SPU: 0 0 0 0 0 0 0 0 Spurious interrupts PMI: 0 0 0 0 0 0 0 0 Performance monitoring interrupts PND: 0 0 0 0 0 0 0 0 Performance pending work RES: 61166 42503 6683 11920 2681 3534 4120 2460 Rescheduling interrupts CAL: 197 302 301 303 290 300 314 318 Function call interrupts TLB: 1406 1551 464 1749 350 897 485 563 TLB shootdowns TRM: 0 0 0 0 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 0 0 0 0 Machine check exceptions MCP: 1 1 1 1 1 1 1 1 Machine check polls ERR: 0 MIS: 0 -----------------interrupts------------------ To get to this point I've confirmed IOMMU is loading on boot. during boot a grep for AMD-Vi returns: -----------------AMD-Vi------------------ AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 AMD-Vi: Initialized for Passthrough Mode AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 -----------------AMD-Vi------------------ I've set: allow_unsafe_assigned_interrupts. I've set selinux to permissive I've set user and group for qemu to 'root' I've set clear_emulator_capabilites = 0 I've set relaxed_acs_check = 1 Finally, if there's a better forum to ask this question in please let me know. I've already tried #kvm and #virt on IRC with no reply yet. I've tried the CentOS 6.2 forums with no reply. Thanks, Chris P.S. I didn't subscribe, just sent this email. If by some odd chance, I can't see replies w/o subscribing someone please let me know. (sanders.chris(a)gmail.com)

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[libvirt-users] Resize qcow2 disks
by Javi Legido 01 Jun '12

01 Jun '12

Good morning. I already tried: 1. http://michael.orlitzky.com/articles/resizing_a_kvm_or_qemu_disk_image.php Result: OS system can't see the disk space sudo qemu-img resize /var/lib/libvirt/images/mysql-1.qcow2 +8G ls -lath /var/lib/libvirt/images/mysql-1.qcow2 -rw------- 1 libvirt-qemu kvm 10G jun 1 15:35 /var/lib/libvirt/images/mysql-1.qcow2 # pvresize /dev/vda5 Physical volume "/dev/vda5" changed 1 physical volume(s) resized / 0 physical volume(s) not resized # lvextend -L8G /dev/template/root Extending logical volume root to 8.00 GiB Insufficient free space: 1630 extents needed, but only 0 available 2. http://blog.wpkg.org/2010/10/04/resizing-qcow2-images/ Result: OS system can't see the disk space My 3rd option is to install libguestfs-tools package, but I would like to avoid it since it's not part of Debian release. Any good step by step guide to enlarge a qcow2 + LVM virtual disk? Thanks

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[libvirt-users] The LXC container propagate the ro remount to the host mount point
by Sebastien Douche 01 Jun '12

01 Jun '12

Hi, every so often (cannot determine when it occurs at this time), the VM remount in read only the host partition (/srv here). Is it a bug? A misconfiguration? My config: <filesystem type='mount' accessmode='passthrough'> <source dir='/srv/lxc/lib/vprobe10/rootfs'/> <target dir='/'/> </filesystem> -- Sebastien Douche <sdouche(a)gmail.com> Twitter: @sdouche / G+: +sdouche

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[libvirt-users] Image booted using libvirt with --arch=i686 gives a message: Kernel detected only i486 CPU
by Georgy Sebastian Pullolickal 01 Jun '12

01 Jun '12

I tried booting a gentoo image I had created using the command virt-install --name=test --ram=512 --vcpus=1 --import --os-type=Linux --arch=i686 --disk path=/vms/test.qcow2,format=qcow2 --graphics vnc,port=5910,listen=0.0.0.0,password=test123 --network bridge=virbr0 --noautoconsole --description --autostart However even though the architecture is specified as i686, the image does not boot. It gives a message This kernel requires an i586 CPU, but only detected an i486 CPU. Unable to boot- please use a kernel appropriate for your CPU. The created libvirt profile xml can be found at Pastebin test.xml<http://pastebin.ca/2156937> I am able to boot it directly using qemu --enable-kvm I am at a loss about what could be causing such an issue?? Additionally is there by which I can pass additional parameters to qemu using libvirt? I understand that it is possible to pass the arguments by modifying the domain xml, but is there any way to do the same though command line? For my current work, I need to use a custom version of qemu with custom arguments. -- Regards Georgy

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[libvirt-users] Reg: Info on memory usage from within LXC.
by Alphonse Hansel Anthony 01 Jun '12

01 Jun '12

Hi All, Is it possible to report memory usage of a LXC, from within a LXC? Tools like #top, #free use /proc information and report back the host details. Is /proc namespace aware? Are there any other tools available to report memory usage from cgroups directly, but from within the container? Any info or pointers on this would be useful. Thanks, Alphonse

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[libvirt-users] NPIV setup?
by Jason Price 01 Jun '12

01 Jun '12

I'm missing something. The purpose of NPIV (as I understand it) is to give a guest OS an HBA that it can scan, play with new luns, etc all without making changes to the physical server(s) the guest is living in currently. However, I can't find a way to either have the guest's XML config create the HBA or for the physical server to successfully GIVE the HBA to the guest. I can give disks all day long, but I can't give the HBA to the guest. It seems like libvirt and virsh can only create the vHBA on the physical box, which defeats the purpose of working with NPIV then... I can just present the same luns to the REAL WWPNs of the physical boxes that need access, setup multipathd to give /dev/mapper names in a consistent manner, and give the raw disks to the guests. I really want to get the physical KVM servers out of the 'storage management' game aside from the basic OSes of the guests. How can I do that? (or am I missing something?) --Jason

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[libvirt-users] win-xp guest after reboot: could not open disk image /dev/sr0: mo medium found and extreme sluggisch
by Ekkard Gerlach 30 May '12

30 May '12

Hi, win-xp won't boot after installation. The CD is needed to boot from. How can I convince win-xp to boot? That's what I did: ================== I installed win-xp guest on debian squeeze: # virt-install --connect qemu:///system --name winxp-prof --ram 1024 \ --disk path=/dev/vg-levo/winxp-kvm,size=10 \ --network bridge:br0 --vnc --os-variant winxp --cdrom /dev/sr0 /dev/vg-levo/winxp-kvm is a lvm (logical volume, 10GB) Installation worked, but was extrem slow. Machine: Lenovo B560, core i3, 6 GB RAM. WinXP made a normal reboot after installation, I ejected install cd, then: virt-manager output: Error starting domain: internal error Process exited while reading console log output: chard device redirected to /dev/pts/2 qemu: could not open disk image /dev/sr0: mo medium found So I inserted the CD and a black blanc screen appeared. Windows didn't boot. I deleted installation configuration: # virsh undefine winxp-prof I invoked virt-install (see above) once again ... and win-xp is booting ... what a surprise, without installing again after undefine .. ! The reason: the lvm partition was not deleted. WinXP now always needs a CD to boot and is extreme sluggisch. Right mouse click lasts about one minute! tia Ekkard

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[libvirt-users] Virtual Machines Stay Off If Rebooted
by Andrew Martin 30 May '12

30 May '12

Hello, I am using libvirt on Ubuntu 10.04 Server and the following versions of these packages: libvirt-bin, libvirt0, python-libvirt - 0.7.5-5ubuntu27.22 qemu-kvm 0.12.3+noroms-0ubuntu9.18 Recently, when restarting a VM (either by issuing "sudo reboot" on a Linux guest or choosing "Restart" from the Start Menu on a Windows guest) the VM shuts down and remains off rather than simply restarting. I cannot test "virsh restart <domain>" on this server as the version of libvirt does not appear to support restarting - see https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/368962 I do not receive any errors in /var/log when the shutdown occurs. Powering the VM back on works, however I would prefer to have hot restart working so VMs that are automatically rebooted to install updates will come back up automatically. Do you have any suggestions on how to debug this behavior? Thanks, Andrew

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[libvirt-users] How to configure cpu frequency of guest
by hongming 30 May '12

30 May '12

Hi Experts I want to know how to configure cpu frequency of guest. Why it always display "cpu MHz : 3092.974" , If it needs to offer user a KVM guest with 1 GHz cpu using libvirt , How to do it ? Thanks a lot in advance. Hongming

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