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[libvirt-users] problem with dependencies
by monitz 15 Feb '10

15 Feb '10

hello i have been having trouble installing libvirt i installed kvm-kmod on rhel 5.4 kernel 2.6.18 without issues using an rpm from the redhat website after installation i tested it by creating an img file with qemu image and went ahead to install libvirt and libvirt-python for virtmanager however during installation of libvirt i get the following error: failed dependencies /usr/bin/qemu-img since qemu-img is in /usr/local/kvm/bin on my system i tried adding it to $PATH, symlinking the file and even copying the binery to /usr/bin but to no use compilation from source seemed to go fine but after that libvirt-python could still not find libvirt is there any solution to this issue? , i would imagine it is a known one thanks in advance matan

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[libvirt-users] virt-manager and openvz
by Angel Bosch Mora 15 Feb '10

15 Feb '10

hi, on main page of libvirt i can see that there's support for OpenVZ. how can i connect with virt-manager to an OpenVZ machine? im using virt-manager 0.8.2 Thanks, angbosch

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[libvirt-users] pre/post vm start commands
by Soeren Grunewald 13 Feb '10

13 Feb '10

Hi there, for development i use a windows vm. which is installed into a disk image. because the compiler generates a lot of temporary files into the user tempdir (C:\\Documents And Users\\User\\Local Settings\\Temp) the vm becomes quite slow after a couple of weeks and i register a lot activity on the disk. so i moved the temp directory to a ram disk and no more problems. but because the ram disk is not formated on startup i need to do this by hand. so i disabled autostart for the vm and do the following: $ sudo mkfs.ntfs -q -L TEMP -I /dev/ram0 $ sudo virsh start windows so the question is, does libvirt provide some kind of pre startup script which is will be executed before the libvirtd does the autostart for the vm. -- Best Regards Soeren

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[libvirt-users] error: unable to connect to libvirtd at 'a.b.c.d': Connection refused
by antonela_other＠yahoo.com 12 Feb '10

12 Feb '10

Greetings: I have an issue with connecting to the esx hypervisor from my guest Vm. The purpose of the connection is to obtain host related information (like network, devices etc). I am not sure what is it that rejects the connect at the server side, and what i am missing. I am running lib0.7.5, i have libvirtd running on guest-vm. The host ESX has the ip address a.b.c.d. Any thoughts? Below the error with some debug output from libvirt. root > virsh -c esx://a.b.c.d/system ...................... 17:06:16.065: debug : virConnectOpenAuth:1337 : name=esx://10.59.56.109/system, auth=0xb80ac638, flags=0 17:06:16.065: debug : do_open:1106 : name "esx://10.59.56.109/system" to URI components: scheme esx opaque (null) authority (null) server 10.59.56.109 user (null) port 0 path /system 17:06:16.065: debug : do_open:1116 : trying driver 0 (Test) ... 17:06:16.066: debug : do_open:1122 : driver 0 Test returned DECLINED 17:06:16.066: debug : do_open:1116 : trying driver 1 (Xen) ... 17:06:16.066: debug : do_open:1122 : driver 1 Xen returned DECLINED 17:06:16.066: debug : do_open:1116 : trying driver 2 (OPENVZ) ... 17:06:16.066: debug : do_open:1122 : driver 2 OPENVZ returned DECLINED 17:06:16.066: debug : do_open:1116 : trying driver 3 (VBOX) ... 17:06:16.066: debug : do_open:1122 : driver 3 VBOX returned DECLINED 17:06:16.066: debug : do_open:1116 : trying driver 4 (remote) ... 17:06:16.067: debug : doRemoteOpen:564 : proceeding with name = esx:///system 17:06:16.069: debug : initialise_gnutls:1145 : loading CA file /etc/pki/CA/cacert.pem 17:06:16.070: debug : initialise_gnutls:1158 : loading client cert and key from files /etc/pki/libvirt/clientcert.pem and /etc/pki/libvirt/private/clientkey.pem 17:06:16.074: debug : do_open:1122 : driver 4 remote returned ERROR 17:06:16.074: debug : virUnrefConnect:259 : unref connection 0x903e078 1 17:06:16.074: debug : virReleaseConnect:216 : release connection 0x903e078 error: unable to connect to libvirtd at a.b.c.d': Connection refused error: failed to connect to the hypervisor I tried to use uri like: esx://a.b.c.d/, esx://a.b.c.d, esxi://a.b.c.d/system etc. They all give same issue. Thanks. Antonela

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[libvirt-users] libvirt attaching wrong usb device?
by Tom Hughes 12 Feb '10

12 Feb '10

I'm trying to attach a USB device which is attached to my host to a guest instance. The device definition in the XML looks like: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x046d'/> <product id='0xc111'/> </source> </hostdev> and the device appears in lsusb as USB device 002:018: Bus 002 Device 018: ID 046d:c111 Logitech, Inc. but when I try and start the guest libvirt appears to try and use a different device which doesn't exist: error: unable to set security context '107:107' on '/dev/bus/usb/002/022': No such file or directory This is using the current libvirt-0.7.6-1.fc12.x86_64 package from the F12 virt-preview repository. Tom -- Tom Hughes (tom(a)compton.nu) http://www.compton.nu/

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[libvirt-users] virt-manager can't start
by Stephen Liu 05 Feb '10

05 Feb '10

Hi folks, KVM Virt-manager host - Debian 5.0 Starting; Gnome Applications -> System Tools - Virtual Machine Manager popup following error; Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 346, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 248, in main setup_logging() File "/usr/share/virt-manager/virt-manager.py", line 124, in setup_logging os.mkdir(vm_dir) OSError: [Errno 17] File exists: '/home/satimis/.virt-manager' - end - $ ls -al /home/satimis/ | grep virt-manager drwxr-xr-x 2 root root 4096 2009-05-31 06:11 .virt-manager $ mv /home/satimis/.virt-manager /home/satimis/.virt-manager.old01 Restart Applications -> System Tools - Virtual Machine Manager starting GUI virt-manager but without asking for login as root $ ls -al /home/satimis/ | grep virt-manager drwxr-xr-x 2 satimis satimis 4096 2010-01-31 10:00 .virt-manager If changing the owner by running $ sudo chown root:root /home/satimis/.virt-manager GUI virt-manage can't start with abovementioned warning pop. Please advise how to fix this problem. I expect with root-password to start GUI virt-manager TIA B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com

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[libvirt-users] No sound
by Stephen Liu 04 Feb '10

04 Feb '10

Hi folks, Host - Debian 5.0 KVM VM - Ubuntu 9.10 No sound on playing youtube. Volume on host and VM has been turned to max, Virtual Machine Manager Edit -> Preferences Install Audio Device [check] Local VM Please help. TIA B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com

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[libvirt-users] Problem creating VM: "tap: not a valid disk type"
by Arik Raffael Funke 03 Feb '10

03 Feb '10

Hi, I am having problems creating VMs in virt-manager. I have played with different xen hypervisor versions 3.0 & 3.4 (with rpm -i --force) but have in principle gone back to the originals. - Though I cannot absolutely exclude that something has gone wrong. In principle I am using rhel 5.4 with the gitco xen 3.4 hypervisor. Can anybody put me on the right track with the attached error message? Note, the storage file I am attempting to use does exist. Many thanks, Arik === Unable to complete install 'libvirt.libvirtError POST operation failed: xend_post: error from xen daemon: (xend.err 'Error creating domain: Invalid Configuration: tap: not a valid disk type') Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 1485, in do_install dom = guest.start_install(False, meter = meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 628, in start_install return self._do_install(consolecb, meter, removeOld, wait) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 726, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 1077, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: POST operation failed: xend_post: error from xen daemon: (xend.err 'Error creating domain: Invalid Configuration: tap: not a valid disk type') '

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[libvirt-users] poor network performance to one of two guests
by Philip Nelson 31 Jan '10

31 Jan '10

G'day, I have a host running two kvm guests. One of them gets very poor network performance, testing with iperf I get ~10MBit/sec to guest A, >400MBit/sec to guest B (running iperf between the host/guest). Both guests are using the same bridge: Guest A: <interface type='bridge'> <mac address='54:52:00:75:24:91'/> <source bridge='br0'/> </interface> Guest B: <interface type='bridge'> <mac address='54:52:00:3b:13:2a'/> <source bridge='br0'/> </interface> The host and guests are debian lenny, the host I have updated with some packages from backports.org. The host is running 2.6.30 with qemu-kvm 0.12.2 and libvirt 0.7.5. The host has 8gig ram and a quad core xeon cpu. Each guest is given one vcpu, guest A has 3gig memory, guest B 1gig. I have tried starting them in a different order so that one gets vnet0 and one gets vnet1, it doesn't make a difference, it's always guest A that is slow. I'm a bit stuck here, I don't know what else to try. Below is some information for the host/guests, not sure what might be helpful: ifconfig eth1/br0/vnet0/1 output from the host: eth1 Link encap:Ethernet HWaddr 00:25:64:3b:65:de inet6 addr: fe80::225:64ff:fe3b:65de/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7828 errors:0 dropped:0 overruns:0 frame:0 TX packets:6664 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4034843 (3.8 MiB) TX bytes:466838 (455.8 KiB) Interrupt:17 br0 Link encap:Ethernet HWaddr 00:25:64:3b:65:de inet addr:192.168.108.1 Bcast:192.168.108.255 Mask:255.255.255.0 inet6 addr: fe80::225:64ff:fe3b:65de/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:110047 errors:0 dropped:0 overruns:0 frame:0 TX packets:111420 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:5744145 (5.4 MiB) TX bytes:870431296 (830.1 MiB) vnet0 Link encap:Ethernet HWaddr 72:48:bc:10:45:d4 inet6 addr: fe80::7048:bcff:fe10:45d4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:107881 errors:0 dropped:0 overruns:0 frame:0 TX packets:581468 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:7129781 (6.7 MiB) TX bytes:873414210 (832.9 MiB) vnet1 Link encap:Ethernet HWaddr 36:20:fc:df:52:66 inet6 addr: fe80::3420:fcff:fedf:5266/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7918 errors:0 dropped:0 overruns:0 frame:0 TX packets:21692 errors:0 dropped:0 overruns:16236 carrier:0 collisions:0 txqueuelen:500 RX bytes:534843 (522.3 KiB) TX bytes:32575099 (31.0 MiB) # brctl show: bridge name bridge id STP enabled interfaces br0 8000.0025643b65de no eth1 vnet0 vnet1 # lsmod | grep kvm kvm_intel 47336 6 kvm 159032 1 kvm_intel ifconfig output from guest A: eth0 Link encap:Ethernet HWaddr 54:52:00:75:24:91 inet addr:192.168.108.100 Bcast:192.168.108.0 Mask:255.255.255.0 inet6 addr: fe80::5652:ff:fe75:2491/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:21708 errors:0 dropped:0 overruns:0 frame:0 TX packets:8155 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:32576795 (31.0 MiB) TX bytes:553329 (540.3 KiB) Interrupt:10 ifconfig output from guest B: eth0 Link encap:Ethernet HWaddr 54:52:00:3b:13:2a inet addr:192.168.108.101 Bcast:192.168.108.0 Mask:255.255.255.0 inet6 addr: fe80::5652:ff:fe3b:132a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:582733 errors:0 dropped:18 overruns:0 frame:0 TX packets:109328 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:865856730 (825.7 MiB) TX bytes:7230359 (6.8 MiB) Interrupt:10 Base address:0xe000 Here is the guest A definition: <domain type='kvm'> <name>guestA</name> <uuid>a32a9d3b-e5ae-5943-c6db-52bc118f99c6</uuid> <memory>3145728</memory> <currentMemory>3145728</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/guestA'/> <target dev='vda' bus='virtio'/> </disk> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/guestA-data.img'/> <target dev='vdb' bus='virtio'/> </disk> <interface type='bridge'> <mac address='54:52:00:75:24:91'/> <source bridge='br0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> </devices> </domain> And guest B: <domain type='kvm'> <name>guestB</name> <uuid>1816a68e-929c-0b36-41ac-a380a4062298</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/guestB'/> <target dev='vda' bus='virtio'/> </disk> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/guestB-data.img'/> <target dev='vdb' bus='virtio'/> </disk> <interface type='bridge'> <mac address='54:52:00:3b:13:2a'/> <source bridge='br0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> </devices> </domain> Any help would be greatly appreciated. -- Philip

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[libvirt-users] Storage requirement for KVM
by anuj rampal 30 Jan '10

30 Jan '10

Hi all, I have to buy a server machine and Run KVM on it. I just wanted to know what type of storage devices are supported by KVM. Thanks & Regards Anuj

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