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[libvirt-users] bridge / ubuntu / no arp reply
by François Chenais 27 Feb '14

27 Feb '14

Hello I'm trying to setup a bridged guest on an ubuntu 13.10 but it doesn't work. (Everything is ok with NAT) Network sniffing shows that arp replies don't come back to the guest. Test 1 ------ Guest : ping host_bridge_ip (ok) Test 2 ------ Guest: ping other_lan_host (KO) other_lan_host - receives arp who-is request - sends arp reply - arp -a shows the guest macaddr => Guest doesn't receive reply Test 3 ------ other_lan_host ping the Guest (KO) - arp -a shows "incomplete" addr - Guest receives nothing On Host ------- network tcpdump on bridge or vnet interfaces shows request but no reply ... Thanks in advance for help or ideas François

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[libvirt-users] POOL of SRIOV networks with multiple PFs
by john fisher 27 Feb '14

27 Feb '14

We are using an Intel 82599 chip that allows 4 PFs ( eth0..3) per VM. I am able to manually start VMs using the hostdev definition for the four network connections, but I'd like to start using the pool approach. Ubuntu 12.04 libvirt 1.0.0 Following: http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs… I can get a pool working with one network- <network> <name>passthrough_eth0</name> <forward mode='hostdev' managed='yes'> <pf dev='eth0'/> </forward> </network> and I can get the four networks started using similar xml. Using one stanza of network type passthrough, I can get a pool on one PF. But when I try to create the VM using four stanzas of network definition, <interface type='network'> <source network='passthrough_eth0'/> </interface> <interface type='network'> <source network='passthrough_eth1'/> </interface> <interface type='network'> <source network='passthrough_eth2'/> </interface> <interface type='network'> <source network='passthrough_eth3'/> </interface> I get this error: "error: Failed to create domain from ./vm0.xml error: internal error Process exited while reading console log output: kvm: -device pci-assign,host=01:10.1,id=hostdev0,configfd=47,bus=pci.0,addr=0x8: Duplicate ID 'hostdev0' for device " Ideas? -- John Fisher

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[libvirt-users] Problem starting VM
by junkmail 27 Feb '14

27 Feb '14

I am having a problem starting a VM and seem to be unable to determine what the problem is. I get the following lines in my log files. Feb 26 06:32:31 yours dbus[14359]: [system] Activating service name='org.freedesktop.machine1' (using servicehelper) 2014-02-26 06:32:31.914+0000: 14451: error : virDBusCallMethod:1205 : Launch helper exited with unknown return code 1 Feb 26 06:32:31 yours dbus[14359]: [system] Activated service 'org.freedesktop.machine1' failed: Launch helper exited with unknown return code 1 This is running on Gentoo using dbus 1.6.18 Libvirt 1.2.1 qemu 1.5.3 Kernel 3.10.7 Let me know what else I can provide. Thanks

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[libvirt-users] VirtFS accessmode
by Lanati, Matteo 27 Feb '14

27 Feb '14

Hi all, I'm trying to share a folder between a host and a guest using VirtFS. The source is NAS mounted on the host and QEMU runs as unprivileged user. The only way for me to use the folder inside the guest is to set the access mode to 'squash' but all file operations are performed by the user running QEMU. If I ran QEMU as root, the passthrough mode works as expected. Is there the possibility to configure the passthrough access also for non-root users? Thanks, Matteo Matteo Lanati Distributed Resources Group Leibniz-Rechenzentrum (LRZ) Boltzmannstrasse 1 85748 Garching b. München (Germany) Phone: +49 89 35831 8724

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[libvirt-users] VM Creation Timestamp
by Tony Atkinson 27 Feb '14

27 Feb '14

Hello, Is there any way to query libvirt, ideally through virsh CLI utility or similar, to get a timestamp of when a VM was created. Or to put it another way, a timestamp of when a domain's UUID was allocated. Many thanks, -- Tony Atkinson

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[libvirt-users] libvirt lxc /dev/null
by Nerijus Baliunas 26 Feb '14

26 Feb '14

Hello, I created lxc container on F19 with virt-manager and it starts OK. The only problem is that sshd does not run complaining "/dev/null is not a character device". # ls -l /dev/null -rw-r--r-- 1 root root 0 2014-02-25 22:39 /dev/null /sys/fs/cgroup/devices/machine/VM_NAME.libvirt-lxc/devices.list has "c 1:3 rwm" line, but I cannot create /dev/null: # mknod /dev/nulll c 1 3 mknod: `/dev/nulll': Operation not permitted Thanks, Nerijus

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[libvirt-users] Problems with tls connection when ran with user privileges
by Pasquale Dir 26 Feb '14

26 Feb '14

I set up my certificates, ca client and server, as described in your documentation: http://wiki.libvirt.org/page/TLSCreateServerCerts. I followed it step by step so it must be ok. However, when I run virsh -c qemu://192.168.1.2/system and I try a command like list --all I get: error: impossible connect to the hypervisor errore: no valid connection errore: Unable to set x509 CA certificate: /etc/pki/CA/cacert.pem: Error while reading file. If I run the same command with root privileges: virsh -c qemu://192.168.1.2/system everything works, anyway I get this warning too: 2014-02-26 13:03:25.035+0000: 10825: info : libvirt version: 1.1.1 2014-02-26 13:03:25.035+0000: 10825: warning : virNetTLSContextCheckCertKeyPurpose:364 : Certificate /etc/pki/libvirt/clientcert.pem purpose does not allow use for with a TLS client I don't know if it is a problem, I need to live migrate machines... Anyway, main problem is that I don't want to run virsh with root privileges. Where the problem is?

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[libvirt-users] libvirt iSCSI target discovery
by Sijo Jose 25 Feb '14

25 Feb '14

Hi, Is it possible to discover iSCSI targets using libvirt API..? OR is it possible to get the similar results of below commands using libvirtAPI..? iscsiadm --mode discovery --type sendtargets --portal server1.example.com sudo iscsiadm -m discovery -t st -p 192.168.0.10 Regards Sijo

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[libvirt-users] assigning a single IP to the guest with "typical" hosting provider
by Tomasz Chmielewski 25 Feb '14

25 Feb '14

I have a server with a hosting company, Hetzner. The servers at this hosting company have a public IP, let's say, A.B.C.D/255.255.255.x. Additionally, one can order extra IPs like below: 1) additional subnet (let's say X.Y.Z.0 / 28) 2) single IP (let's say, E.F.G.H) With additional subnet, assigning the IP to libvirt guest is simple: - assign X.Y.Z.1 on the host - assign X.Y.Z.2 to the guest, with X.Y.Z.1 gateway - done, works fine. However, I'm having problems assigning a single IP to the guest (when there is no extra subnet on the host, but just an extra IP): - if I assign E.F.G.H/255.255.255.255 to the host, the IP is reachable from the internet - if I assign E.F.G.H to the guest (with a proper gateway), the guest is not able to communicate with the internet. Which networking mode should I use in this setup? Bridge, macvtap? I've tried both, without success (i.e. in macvtap mode, arp who-has are passed from the guest to the gateway, replies received on the host, but they are not passed to the guest). Has anyone ever set libvirt with a "typical" hosting provider, when only an extra IP, from a non-host subnet, is available for a guest? -- Tomasz Chmielewski http://wpkg.org

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[libvirt-users] Rhel7 snap6 -- SR-IOV
by Murali Krishna 24 Feb '14

24 Feb '14

Hi, This is regarding SRIOV in Rhel7. I have added intel_iommu=on in grub.cfg file. When I attach Virtual Function to VM and I try to poweron the VM, I get the below error: [root@Dell-Rhel7 ~]# virsh start rhel64x64GA error: Failed to start domain rhel64x64GA error: internal error: early end of file from monitor: possible problem: qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio: failed to open /dev/vfio/vfio: Permission denied qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio: failed to setup container for group 47 qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio: failed to get group 47 qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: Device initialization failed. qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: Device 'vfio-pci' could not be initialized We are facing this problem with both Emulex and Intel adapters. Please help me to resolve this issue. Thanks, Murali.

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