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[libvirt-users] LXC: unable to configure networking for LXC
by Avi Weit 12 Mar '10

12 Mar '10

Hello, I would like to set up sshd under an LXC application container and to be able to connect into it from the host. I was able to achieve that with LXC tools CLI after setting up a bridge via brctl and creating a proper lxc.conf file for lxc-execute to use. However, I am unable to do so via libvirt. I am using libvirt version 0.7.1 installed on fedora 12. I first verified that the default network is up [root@enc12 avi]# virsh net-list --all Name State Autostart ----------------------------------------- default active yes and that the bridge exists [root@enc12 avi]# brctl show bridge name bridge id STP enabled interfaces virbr0 8000.000000000000 yes I then went over the explanations under http://www.libvirt.org/formatdomain.html#elementsNICS and http://wiki.libvirt.org/page/Networking and made sure net.ipv4.ip_forward = 1 under file /etc/sysctl.conf on the host after that, I created a container with the following xml specification: <domain type='lxc'> <name>ssh9</name> <memory>500000</memory> <os> <type>exe</type> <init>/usr/sbin/sshd</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='network'> <source network='default'/> </interface> <console type='pty' /> </devices> </domain> Below is the command that verifies LXC is running followed by dumpxml: [root@enc12 avi]# virsh -c lxc:/// list --all Id Name State ---------------------------------- 1551 ssh9 running <domain type='lxc' id='1551'> <name>ssh9</name> <uuid>ead3dc4f-9b3f-eec0-e83a-1d87e0ffb1eb</uuid> <memory>500000</memory> <currentMemory>500000</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686'>exe</type> <init>/usr/sbin/sshd</init> </os> <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='network'> <mac address='52:54:00:e8:e3:dd'/> <source network='default'/> <target dev='veth0'/> </interface> <console type='pty' tty='/dev/pts/1'> <source path='/dev/pts/1'/> <target port='0'/> </console> </devices> </domain> However, I can not see the IP address of the container so was not able to connect it. I can also see that the routing table configured on the host - routes any address destined to network 192.168.122 - into the bridge and I understood that the container should have constructed with one of the IPs in the range of 192.168.122.2 to 192.168.122.254 (as defined in dhcp tag under default network) but it did not happen. Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 9.148.28.32 * 255.255.255.240 U 1 0 0 eth0 192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0 default 9.148.28.33 0.0.0.0 UG 0 0 0 eth0 I wonder what am I missing here. Thanks, - Avi

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[libvirt-users] info about "migration check"
by Paolo Smiraglia 11 Mar '10

11 Mar '10

Hi guys! I'm Paolo, and I'm working on my graduation thesis. One of my thesis' subject is to define a migration check which will be used to perform "secure migration" using IMA measurement. Someone can suggest me a documentation (code examples, technical paper, etc) about migration cheks? Now I'm analyzing libvirt source code to uderstand migration-cheks mechanism, but the analysis has a ways to go...... Thanks!

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[libvirt-users] No qemu-dm process for running domain
by Zhang Qian 09 Mar '10

09 Mar '10

Hi, My C application is using libvirt to operate domains, but I found when I started a domain with my application, there was no qemu-dm for this running VM, and I can not access this domain with the graphic console provided by virt-manager. But if I started the same domain with virsh which linked with the libvirt shipped in OS, everything was OK, there will be a qemu-dm process for the running domain, and the graphic console provided by virt-manager worked well. The libvirt used by my application is libvirt-0.6.4, I just downloaded libvirt-0.6.4.tar.gz from http://libvirt.org/sources/old/libvirt-0.6.4.tar.gz, and I built it by running "./configure --prefix=/usr && make". Here are the details of my machine: # cat /etc/redhat-release Scientific Linux SL release 5.4 (Boron) # uname -an Linux ib06b07 2.6.18-164.11.1.el5xen #1 SMP Wed Jan 20 08:53:10 EST 2010 i686 i686 i386 GNU/Linux Was there anything wrong when I built libvirt-0.6.4? Should I enable some compilation options for launching qemu-dm process for running domains? Any suggestions will be really appreciated, thanks in advance! Regards, Qian

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[libvirt-users] ESX access using libvirt
by Jonathan Kelley 05 Mar '10

05 Mar '10

Hello, I am trying to access an ESXi host using libvirt but it seems that it requires netcat to be running on the ESX server. My ESX 4 does not have this installed and I am wondering if this is required or is there some other way to get this working? Thanks, Jon

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[libvirt-users] Libvirt Auth
by Marco Mornati 04 Mar '10

04 Mar '10

Hello guys, I've created a plugin for Hudson (CI) to manage virtmachines using libvirt java (start vm for a build and stop just after). I've just a problem in authentication, in fact I cannot send uname and password using code, libvirt ask me for the credentials on CLI. someone could explain me How I can use authentican or where I can find an usage guide or example? Thanks a lot Bye Marco

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[libvirt-users] Libvirt and openvz?
by Thomas Graves 03 Mar '10

03 Mar '10

I just recently started using openvz and I'm trying to use libvirt/virsh with it. I followed the directions on page: http://libvirt.org/drvopenvz.html But I get an error trying to run define with the example config file: virsh define virt.conf error: Failed to define domain from virt.conf error: unknown OS type exe I'm using libvirt 0.7.2. Does anyone have more example configuration files or other setup instructions? Does Libvirt allow you to specify other resource limits and controls that openvz has - like vzctl set --devnodes device:rw or vzctl set kmemsize? Thanks, Tom

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[libvirt-users] location of network xml files
by carlos campderrós 01 Mar '10

01 Mar '10

Hello, On Ubuntu 9.04 (libvirt 0.6.1-0ubuntu5.1) I have 2 different network files: root@sauron:~# ls -l `locate default.xml` lrwxrwxrwx 1 root root 14 2010-02-13 12:34 /etc/libvirt/qemu/networks/autostart/default.xml -> ../default.xml -rw-r--r-- 1 root root 373 2010-03-01 00:02 /etc/libvirt/qemu/networks/default.xml -rw------- 1 root root 319 2010-03-01 00:04 /var/lib/libvirt/network/default.xml Modifications I do on the /etc file are ignored (I'd like to modify the dhcp range and set fixed ips to VM mac addresses). I don't understand why this file is there, as it seems ignored by everything, and why the autostart symlink points to it instead of the /var/lib/libvirt one. Is it reasonable to symlink (or hardlink if possible) one file to the other? Or to remove the /etc file and point the autostart to the /var file? Also, does the autostart do something? because it's pointing to the ignored file. thanks, carlos. -- Si no puedes deslumbrar con tu sabiduría, desconcierta con tus gilipolleces

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[libvirt-users] Migration error
by zorgman 26 Feb '10

26 Feb '10

Hi, I'm trying to migrate a VM from one libvirt 0.7.6-1 (qemu-kvm 0.11.1+dfsg-1) to another libvirt 0.7.6-2 (qemu-kvm 0.11.1+dfsg-1) connected with SSH , i have followed pre requite (same shared, same path, same network conf ...) . But when i migrate , i have following error : operation failed: /migration to 'tcp:x.x.x.x:49157' failed: migration failed DETAIL : Unable to migrate guest: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/migrate.py", line 457, in _async_migrate vm.migrate(dstconn, migrate_uri, rate, live, secure) File "/usr/share/virt-manager/virtManager/domain.py", line 1272, in migrate self._backend.migrate(destconn.vmm, flags, newname, interface, rate) File "/usr/lib/python2.5/site-packages/libvirt.py", line 429, in migrate if ret is None:raise libvirtError('virDomainMigrate() failed', dom=self) libvirtError: operation failed: migration to 'tcp:portable.artis.int:49157' failed: migration failed /on the destination libvirt i can see in syslog : /Feb 26 11:16:25 portable libvirtd: 11:16:25.281: error : qemudDomainGetInfo:3744 : Domain not found: no domain with matching uuid '71c22b3b-4c93-80bd-8387-2b502887c2aa' Feb 26 11:16:25 portable libvirtd: 11:16:25.283: error : qemudDomainGetInfo:3744 : Domain not found: no domain with matching uuid '71c22b3b-4c93-80bd-8387-2b502887c2aa' Feb 26 11:16:25 portable kernel: [ 3022.213730] virbr0: port 1(vnet0) entering disabled state Feb 26 11:16:25 portable kernel: [ 3022.228917] device vnet0 left promiscuous mode Feb 26 11:16:25 portable kernel: [ 3022.228925] virbr0: port 1(vnet0) entering disabled state Feb 26 11:16:25 portable NetworkManager: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/vnet0, iface: vnet0) Feb 26 11:17:01 portable /USR/SBIN/CRON[2606]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Feb 26 11:24:47 portable NetworkManager: <WARN> nm_signal_handler(): Caught signal 15, shutting down normally. Feb 26 11:24:47 portable NetworkManager: <info> (wlan0): taking down device. Feb 26 11:24:47 portable NetworkManager: <info> exiting (success) /in the destination libvirt vm log i can see the cmd running by migration: /LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/ QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.11 -enable-kvm -m 256 -smp 1 -name testmigration -uuid 71c22b3b-4c93-80bd-8387-2b502887c2aa -monitor unix:/var/lib/libvirt/qemu/testmigration.monitor,server,nowait -boot c -drive file=/mnt/testmigration.img,if=virtio,boot=on,format=qcow2 -drive if=ide,media=cdrom,bus=1,unit=0,format=raw -net nic,macaddr=52:54:00:7a:a4:98,vlan=0,model=virtio,name=net0 -net tap,fd=50,vlan=0,name=hostnet0 -serial pty -parallel none -usb -vnc 127.0.0.1:0 -k fr -vga cirrus -incoming tcp:0.0.0.0:49156 -balloon virtio/ I'm using Debian. The problem occure online as offline mod.

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[libvirt-users] How to find IP address that is in use?
by Neil Aggarwal 26 Feb '10

26 Feb '10

Hello: When I try to start a VPS, it tells me the IP address is already in use by another system. How do I find out what guest is using an IP address? Is there a virsh command to list the IP addresses that are in use? Thanks, Neil -- Neil Aggarwal, (281)846-8957 FREE trial: cPanel VPS with unmetered bandwidth http://UnmeteredVPS.net/cpanel

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[libvirt-users] /dev/pts linking option?
by Jon Masters 24 Feb '10

24 Feb '10

Folks, Does anyone know whether libvirt provides a means for me to guarantee a persistent link for my guest's virtual serial console? I need to have a consistent mapping (for example, a symlink that always points to the correct /dev/pts entry) so I can automate kgdb hookup on boot. Jon.

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[libvirt-users] live migration not working correctly
by Daniel Bidwell 24 Feb '10

24 Feb '10

I have two servers running Ubuntu 9.10, with shared disk from ISCSI SAN and OCFS2, identical network configurations, shared ssh keys, and pki keys. My vm will boot from either machine and run correctly. When I attempt to do a live migration with "migrate --live base32 qemu +[ssh/tcp]://vm1/system" it initiates the vm on the other server, but leaves the vm on the current server in the "running" state and the vm on the other server in the "paused" state. It never finishes the migration. I get the same results for doing a migration via ssh as I do with tcp/pki. I have turned up the logging to debug, but don't see anything in the log to indicate an error or any reason for it to not complete. At least not anything obvious. The Ubuntu server software is using kvm/qemu version 84. I have been through the ubuntu and qemu forums/wiki/documentation. Anyone have any suggestions of other things to look for? -- Daniel R. Bidwell | bidwell(a)andrews.edu Andrews University | Information Technology Services If two always agree, one of them is unnecessary "Friends don't let friends do DOS" "In theory, theory and practice are the same. In practice, however, they are not."

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[libvirt-users] Digium TDM410 passthrought to KVM VM trixbox
by raincatsdogs＠me.com 19 Feb '10

19 Feb '10

Hello, my name is Paul. I need to map a PCI device for a virtual machine. The Linux distribution is Ubuntu server 9.10, infrastructure virtualization is "KVM". The virtual machine will install trixbox. To map the PCI card is a "Digium TDM410p. There currently, KVM hosts a virtual machine that runs smoothly without any problems. In fact, this virtual machine is running Openfiler and has direct access to 2 physical disks installed on the server. Creating a new virtual machine can not connect the Digium card, directly to the virtual machine.I tried in 2 ways. 1. Directly editing the XML file for the virtual machine with the parameters indicated in the documentation: ... <devices> <hostdev mode='subsystem' type='pci'> <source> <address bus='0x01' slot='0x00' function='0x0'/> <----- this is my personal configuration </ source> </ hostdev> </ devices> ... 2. Adding the PCI card via virt-manager In both cases, the virtual machine will not start. Virt-manager returns this error: "Error starting domain/ monitor socket did not show up./ Connection refused" "Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 493, in run_domain vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 558, in startup self.vm.create() File "/usr/lib/python2.6/dist-packages/libvirt.py", line 293, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: monitor socket did not show up.: Connection refused" Can someone kindly help me? Thanks

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[libvirt-users] OpenVZ and Libvirt XML configuration
by Danel Ahman 19 Feb '10

19 Feb '10

Hello Could someone give any hints or explain - how to set OpenVZ container hostname and diskspace limits in Libvirt XML configuration file to create the new container through Libvirt. Danel

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[libvirt-users] Check out my photos on Facebook
by Anuj Rampal 18 Feb '10

18 Feb '10

Hi Libvirt-users, I set up a Facebook profile where I can post my pictures, videos and events and I want to add you as a friend so you can see it. First, you need to join Facebook! Once you join, you can also create your own profile. Thanks, Anuj To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=100000789786934&k=Z6E3Y5PS3YVAVA1JPB63QTVZS… Already have an account? Add this email address to your account http://www.facebook.com/n/?merge_accounts.php&e=libvirt-users@redhat.com&c=… was invited to join Facebook by Anuj Rampal. If you do not wish to receive this type of email from Facebook in the future, please click on the link below to unsubscribe. http://www.facebook.com/o.php?k=cf19ea&u=100000790117024&mid=1e70efbG5af33f… Facebook's offices are located at 1601 S. California Ave., Palo Alto, CA 94304.

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[libvirt-users] build libvirt on Mac OSX 10.6
by Camilo Aguilar 17 Feb '10

17 Feb '10

Hi, Anybody know how to build libvirt on Mac OSX 10.6 ?

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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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