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[libvirt-users] drivers
by mattias 14 Mar '10

14 Mar '10

I no i can use libvirt with qemu and xen But openvz? I run debian lenny with libvirt but no no oepnvz

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[libvirt-users] Problem with libvirt migration
by Daniel Bidwell 14 Mar '10

14 Mar '10

I have two hosts, vm1 and vm2, which are both running libvirt 0.7.0. They share a common ocfs2 file system that resides on a san, and have identical network configurations. I am running qemu-kvm 0.11.0 on ubuntu 9.10 servers. I start base32 on vm1 and it comes up (it also runs fine if started on vm2). Then from vm2 I do: vm2#: virsh -c qemu://vm1/system migrate --live base32 qemu://vm2/system The migration starts and the vm2 virsh returns to the prompt. vm2 shows base32 as running and vm1 shows base32 as stopped. The console for base32 on vm2 is frozen and unresponsive. I have the debug level set to 1 on both machines. This is an excerpt from the virsh.log file from vm1: 8:19:40.772: debug : qemudDomainMigratePerform:6513 : base32: migrate reply: migrate "tcp:vm2.cc.andrews.edu:49152" 08:19:40.772: debug : qemudShutdownVMDaemon:2076 : Shutting down VM 'base32' 08:19:40.773: debug : virEventRemoveHandleImpl:173 : Remove handle 11 08:19:40.773: debug : virEventRemoveHandleImpl:186 : mark delete 9 19 08:19:40.773: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.773: debug : virRun:796 : /usr/bin/virt-aa-helper -R -u libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5 08:19:40.773: debug : virEventRunOnce:567 : Poll got 1 event 08:19:40.773: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:40.773: debug : virEventDispatchHandles:440 : Skip deleted n=9 w=11 f=19 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:40.773: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:40.774: debug : virEventMakePollFDs:365 : Prepare n=9 w=12, f=16 e=1 08:19:40.774: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:40.774: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:40.774: debug : virEventRunOnce:565 : Poll on 10 handles 0x2628850 timeout -1 08:19:40.960: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:40.960: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.960: debug : virDomainFree:1922 : domain=0x2605c60 08:19:40.960: debug : virUnrefDomain:373 : unref domain 0x2605c60 base32 1 08:19:40.960: debug : virReleaseDomain:327 : release domain 0x2605c60 base32 08:19:40.960: debug : virReleaseDomain:343 : unref connection 0x2679bd0 2 08:19:40.960: debug : virEventUpdateHandleImpl:146 : Update handle w=12 e=3 The logs on vm2 (destination host) are: 08:19:29.566: debug : virDomainMigratePrepare2:3233 : dconn=0x2096d50, cookie=0x7ff72bf59dc0, cookielen=0x7ff72bf59dcc, uri_in=(null), uri_out=0x20839f0,flags=1, dname=(null), bandwidth=0, dom_xml=<domain type='kvm' id='1'> <name>base32</name> <uuid>2469118c-9b90-44e3-a6ce-01a08bfe28f5</uuid> <memory>262144</memory> <currentMemory>262144</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' machine='pc-0.11'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> </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='disk'> <source file='/home/vms/base32/base32.vmdk'/> <target dev='hda' bus='ide'/> </disk> <interface type='bridge'> <mac address='00:0c:29:db:97:14'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='e1000'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'/> <video> <model type='cirrus' vram='9216' heads='1'/> </video> </devices> <seclabel type='dynamic' model='apparmor'> <label>libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5</label> <imagelabel>libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5</imagelabel> </seclabel> </domain> 08:19:29.569: debug : virGetDomain:296 : New hash entry 0x20941a0 08:19:29.569: debug : virDomainGetUUIDString:2441 : domain=0x20941a0, buf=0x7ff72bf584f8 08:19:29.569: debug : virDomainGetUUID:2407 : domain=0x20941a0, uuid=0x7ff72bf58450 08:19:29.569: debug : virExecWithHook:607 : /usr/bin/virt-aa-helper -c -u libvirt-2469118c-9b90-44e3-a6ce-01a08bfe28f5 08:19:29.857: debug : virExecWithHook:607 : /usr/bin/kvm -help 08:19:29.865: debug : virEventRunOnce:567 : Poll got 1 event 08:19:29.871: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.871: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.871: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.871: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.871: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.871: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:29.872: debug : virEventRunOnce:567 : Poll got 2 event 08:19:29.872: debug : virEventDispatchHandles:450 : Dispatch n=2 f=8 w=3 e=1 0x2074e90 08:19:29.872: debug : device_added:513 : net_4a_cf_74_02_5d_6c 08:19:29.872: debug : virExecWithHook:607 : /usr/bin/kvm -S -M pc-0.11 -cpu qemu32 -m 256 -smp 1 -name base32 -uuid 2469118c-9b90-44e3-a6ce-01a08bfe28f5 -monitor unix:/var/run/libvirt/qemu/base32.monitor,server,nowait -boot c -drive file=/home/vms/base32/base32.vmdk,if=ide,index=0,boot=on -net nic,macaddr=00:0c:29:db:97:14,vlan=0,model=e1000,name=e1000.0 -net tap,fd=19,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus -incoming tcp:0.0.0.0:49152 08:19:29.885: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.885: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.885: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.885: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.885: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:29.885: debug : virEventRunOnce:567 : Poll got 1 event 08:19:29.885: debug : virEventDispatchHandles:450 : Dispatch n=4 f=3 w=5 e=1 0x2058040 08:19:29.885: info : qemudDispatchSignalEvent:370 : Received unexpected signal 17 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:29.885: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:29.885: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:29.885: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:29.885: debug : virEventRunOnce:565 : Poll on 10 handles 0x2091480 timeout -1 08:19:30.075: debug : virEventAddHandleImpl:112 : Add handle 19 0 0x425d40 0x2073710 08:19:30.075: debug : virEventAddHandleImpl:116 : Used 10 handle slots, adding 10 more 08:19:30.075: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.075: debug : virEventRunOnce:567 : Poll got 1 event 08:19:30.075: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 8:19:30.075: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.075: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.075: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.075: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:30.076: debug : qemudDomainSetMemoryBalloon:3175 : base32: balloon reply: balloon 256 08:19:30.077: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:30.077: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.077: debug : virEventRunOnce:567 : Poll got 1 event 08:19:30.077: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=3 08:19:30.077: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with -1 ms freq 08:19:30.077: debug : virEventInterruptLocked:640 : Interrupting 08:19:30.077: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=5 08:19:30.077: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.077: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.077: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.077: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:30.077: debug : virEventRunOnce:567 : Poll got 2 event 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=0 f=5 w=1 e=1 (nil) 08:19:30.077: debug : virEventDispatchHandles:450 : Dispatch n=9 f=16 w=11 e=4 0x2058040 08:19:30.078: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:30.078: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:30.078: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:30.078: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:30.078: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:30.078: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:40.936: debug : virEventRunOnce:567 : Poll got 1 event 08:19:40.936: debug : virEventDispatchHandles:450 : Dispatch n=9 f=16 w=11 e=1 0x2058040 08:19:40.937: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:40.937: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:40.937: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=1 08:19:40.937: debug : virEventInterruptLocked:636 : Skip interrupt, 1 846931856 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=0 w=1, f=5 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=1 w=2, f=8 e=0 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=2 w=3, f=8 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=3 w=4, f=9 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=4 w=5, f=3 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=5 w=6, f=11 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=6 w=7, f=12 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=7 w=8, f=14 e=25 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=8 w=9, f=15 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=9 w=11, f=16 e=1 08:19:40.937: debug : virEventMakePollFDs:365 : Prepare n=10 w=12, f=19 e=0 08:19:40.937: debug : virEventCalculateTimeout:313 : Calculate expiry of 3 timers 08:19:40.937: debug : virEventCalculateTimeout:343 : Timeout at 0 due in -1 ms 08:19:40.937: debug : virEventRunOnce:565 : Poll on 11 handles 0x2091480 timeout -1 08:19:40.937: debug : virDomainMigrateFinish2:3281 : dconn=0x2096d50, dname=base32, cookie=(nil), cookielen=0, uri=tcp:vm2.cc.andrews.edu:49152, flags=1, retcode=0 08:19:40.938: debug : virGetDomain:298 : Existing hash entry 0x20941a0: refs now 2 08:19:40.938: debug : virEventUpdateTimeoutImpl:247 : Updating timer 1 timeout with 0 ms freq 08:19:40.938: debug : virEventInterruptLocked:640 : Interrupting 08:19:40.938: debug : virEventUpdateHandleImpl:146 : Update handle w=11 e=3 08:19:40.938: debug : virEventInterruptLocked:640 : Interrupting The migration appears to have completed successfully, but the console doesn't respond to anything and neither does the ethernet. Any ideas on how to get past this last step? -- 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] ESX support
by Jonathan Kelley 13 Mar '10

13 Mar '10

Just curious but how long has ESX support been in libvirt? Also I noticed this error when accessing one of my windows vms: error: internal error Expecting VMX entry 'scsi0.virtualDev' to be 'buslogic' or 'lsilogic' but found 'lsisas1068' Not sure whether this is an enhancement, defect, or not supported at this time. Thanks. -Jon

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[libvirt-users] unable to get domain list of KVM guests from libvirt as non-root user
by Tom Georgoulias 13 Mar '10

13 Mar '10

I have a python script that monitors the guest VMs on a servers running Xen, but the script doesn't work properly on a server I just built with KVM. The script runs as a non-root user (same on all servers) and simply gathers some details on the status and names of the domains running on the host. The Xen and KVM servers are running CentOS 5.4 x86_64 and are using the same version of libvirt: libvirt-0.6.3-20.1.el5_4 libvirt-python-0.6.3-20.1.el5_4 Both Xen and KVM servers have the default libvirt.conf config file and the following /var/run/libvirt permissions: KVM: [root@kvm ~]# ls -l /var/run/libvirt total 16 srwx------ 1 root root 0 Mar 12 08:37 libvirt-sock srwxrwxrwx 1 root root 0 Mar 12 08:37 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Mar 8 13:05 network drwxr-xr-x 2 root root 4096 Mar 11 16:17 qemu Xen: [root@xen ~]# ls -l /var/run/libvirt total 16 srwx------ 1 root root 0 Feb 5 08:53 libvirt-sock srwxrwxrwx 1 root root 0 Feb 5 08:53 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Jan 21 14:38 network drwxr-xr-x 2 root root 4096 Oct 20 18:50 qemu Kernel/hypervisor versions of Xen and KVM servers: kernel-xen-2.6.18-164.9.1.el5 xen-3.0.3-94.el5_4.2 kvm-83-105.el5_4.27 kvm-qemu-img-83-105.el5_4.27 kernel-2.6.18-164.11.1.el5 To troubleshoot, I've been running python interactively as the non-root user. Here's how my Xen servers behave: [testu@xen ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [0, 3, 15, 16, 21, 24, 26, 30, 32, 36, 38, 41, 43, 45, 47, 49, 51, 55, 63, 67] >>> When I try the same thing on the KVM server: [testu@kvm ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) 14:33:07.303: error : No vport operation path found for host0 14:33:07.320: error : No vport operation path found for host4 14:33:07.325: error : No vport operation path found for host3 14:33:07.367: error : No vport operation path found for host1 14:33:07.368: error : No vport operation path found for host2 >>> domains = conn.listDomainsID() >>> print domains [] >>> However, when logged in as root on the KVM server, it works just like my Xen servers: [root@kvm ~]# python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [1] As an experiment suggested by a someone on the centos-virt list, I modified the ownership and permissions of the socket files in /etc/libvirt/libvirtd.conf to use the same user running the python script. That didn't make a difference. [testu@kvm ~]$ ls -l /var/run/libvirt total 16 srwxrwx--- 1 root testu 0 Mar 12 07:45 libvirt-sock srwxrwxrwx 1 root testu 0 Mar 12 07:45 libvirt-sock-ro drwxr-xr-x 2 root root 4096 Mar 8 13:05 network drwxr-xr-x 2 root root 4096 Mar 11 16:17 qemu [testu@kvm ~]$ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) 07:45:56.893: error : No vport operation path found for host0 07:45:56.912: error : No vport operation path found for host4 07:45:56.919: error : No vport operation path found for host3 07:45:56.967: error : No vport operation path found for host1 07:45:56.968: error : No vport operation path found for host2 >>> domains = conn.listDomainsID() >>> print domains [] >>> Can someone give me some pointers on what to check next? I'm running out of ideas. Thanks, Tom

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[libvirt-users] Problems with a logical pool creation
by Rubén Vejabalbán 12 Mar '10

12 Mar '10

Hi all, I am new in virtualization so forgive me any evidence. After pool definition, when I try to create a logical pool I obtain the following error: # virsh pool-define vms.pool.xml > Pool vms.pool defined from vms.pool.xml > > # virsh pool-start vms.pool > error: Failed to start pool vms.pool > error: internal error '/sbin/vgchange -ay vms.pool' exited with non-zero > status 5 and signal 0: Volume group "vms.pool" not found > Is anything wrong with my xml file? <pool type="logical"> > <name>vms.pool</name> > <source> > <device path="/dev/sda2"/> > </source> > <target> > <path>/var/lib/virt/images</path> > </target> > </pool> > Are pools created in this way permanent? Thank you! Jenaro Percal

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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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