August 2012 - Users - libvirt List Archives

[libvirt-users] libvirtd may need to be started: Permission denied
by 何鑫 10 Aug '12

10 Aug '12

Hi, I try to configure libvirtd to use qemu+tcp, but after doing so, I can't use virsh or programs with libvirt API. I type "virsh -c qemu:///system", then error: unable to connect to '/var/run/libvirt/libvirt-sock', libvirtd may need to be started: Permission deniederror: failed to connect to the hypervisor I could add "sudo" to "virsh -c qemu:///system", running virsh with "qemu:///system" normally, but it's not suitable for my requests. Also I try to restart or reinstall libvirt-bin in Ubuntu, also failed. Could you give me some idea? Thanks a lot! RegardsCorey

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[libvirt-users] Remote Shutdown of Server 2008
by Gutierrez-Robles, Frank 10 Aug '12

10 Aug '12

Good afternoon, I have a VM of Microsoft Server 2008 SP1. I am using virsh commands to power it on/off. I can power on/off when the admin is logged in to the Server VM, and when there are no users logged in, but when the admin locks the screen, I cannot seem to power it off. The virsh command states that the domain is being shutdown, but it in fact does not. I looked at some registry settings for the VM (server 2008) and see if I can pinpoint an entry I need to set, but had no luck. Any ideas? Thank you for your support. - Frank G.

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[libvirt-users] [libvirt] virDomainMemoryStats call
by Parakkal, Navin S 09 Aug '12

09 Aug '12

Hi, Is the array mstats returned by virDomainMemoryStats call cummulative or snapshot of the counter at that particular time ? I was of the opinion that is cummulative like the /proc counters but this counter seems to go backwards ie next snapshot value is less than the current one which makes me think these are snapshot values . I'm using RHEL 6.3 libvirt version 0.9.10. Regards, Navin

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[libvirt-users] migration with non-root user
by Yih Chuang 09 Aug '12

09 Aug '12

Hi, I had a VM running on c3rh2 under 'vmc' user: [vmc@c3rh2 .ssh]$ virsh list --all Id Name State ---------------------------------------------------- 1 vs2relocate_nonRoot running After the virsh migration command, "virsh migrate --live --unsafe vs2relocate_nonRoot qemu+ssh://vmc@c3rh1.kirkland.ibm.com/session", this VM successfully got migrated to the target host c3rh1. However, it was not visible to 'vmc' user but 'root'. [vmc@c3rh1 .ssh]$ virsh list --all Id Name State ---------------------------------------------------- [vmc@c3rh1 .ssh]$ sudo virsh list --all Id Name State ---------------------------------------------------- 1 vs2relocate_nonRoot running * The libvirt version is libvirt-0.9.10-21.el6_3.1.x86_64 on both hosts. Anything I may have missied? Thanks, --Yih

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[libvirt-users] How the libvirtd connect to qemud in source codes?
by 何鑫 08 Aug '12

08 Aug '12

Hi, I meet a question when reading the libvirt source codes. Could you help me? Coz I plan to link libvirt to a Android Emulator based on QEMU, knowing how the libvirtd connect to qemud is important. I trace the code as following: libvirtd.c contains all the initilization of libvirt daemon, then calling function named qemuRegister to qemu_driver.c which contains three methods:int qemuRegister(void) { virRegisterDriver(&qemuDriver); virRegisterStateDriver(&qemuStateDriver); virNWFilterRegisterCallbackDriver(&qemuCallbackDriver); return 0; } In qemuDriver, I find a function --qemudOpen which, I guess, contains the method what I want. But I failed to find right messages. Could you please give me some tips? I guess there has got to contain related interfaces to connect between libvirt and qemu. Thanks a lot!

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[libvirt-users] Bug in VNC QEMU?
by Nikita A Menkovich 08 Aug '12

08 Aug '12

Hi all! Recently I found some problems after upgrading one of our virtual machines from ubuntu 10.10. to later releases. Root problem is inactive VNC terminal after booting grub. It happens because of using framebuffer at boot process. To fix this problem you should change at /etc/default/grub: GRUB_TERMINAL=console And run # update-grub # reboot This fixes problem. But I think there should be some fix to use fb in vnc without problems. I use: libvirt 0.9.11.3 QEMU emulator version 1.0 (qemu-kvm-1.0 Debian 1.0+dfsg-8~bpo60+1), Copyright (c) 2003-2008 Fabrice Bellard <graphics type='vnc' port='PORT' autoport='no' listen='IP'> <listen type='address' address='IP'/> </graphics> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> -- Nikita A Menkovich http://libc6.org/ JID: menkovich(a)gmail.com

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[libvirt-users] Channel with virtio problem
by norazah aziz 08 Aug '12

08 Aug '12

I have configured the kvm and edit the xml as below, however there are an error when I want to run the guest. The error as follows: virsh create libvirt.xml error: Failed to create domain from libvirt-test.xml error: XML description for unknown target type for character device: virtio is not well formed or invalid Please help me to solve this problem. ############################################################ <domain type='kvm'> <name>i-5E36098H</name> <os> <type>hvm</type> <kernel>/opt/eucalyptus-data/suria/i-5E36098H/kernel</kernel> <initrd>/opt/eucalyptus-data/suria/i-5E36098H/ramdisk</initrd> <cmdline>root=LABEL=root console=ttyS0</cmdline> </os> <features> <acpi/> </features> <memory>13107200</memory> <vcpu>1</vcpu> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file'> <source file='/opt/eucalyptus-data/suria/i-5E36098H/disk'/> <target dev='vda' bus='virtio'/> </disk> <interface type='network'> <source network='default'/> <mac address='d0:0d:45:D2:08:01'/> <model type='virtio'/> </interface> <controller type='ide' index='0'/> <controller type='virtio-serial' index='0' ports='16' vectors='4'/> <controller type='virtio-serial' index='1'> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </controller> <parallel type='pty'> <source path='/dev/pts/2'/> <target port='0'/> </parallel> <serial type='pty'> <source path='/dev/pts/3'/>  <target type='virtio' port='0'/> </serial> <console type='pty'> <source path='/dev/pts/4'/> <target type='virtio' port='0'/> </console> <channel type='pty'> <source mode='bind' path='/var/lib/libvirt/qemu/va-i5E36098H-virtio.sock'/> <target type='virtio' name='org.qemu.guest_agent.0'/> <address type='virtio-serial' controller='0' bus='0' port='0'/> </channel> <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> </devices> ########################################################################

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[libvirt-users] Authentication via SASL and LDAP?
by Andrew Martin 07 Aug '12

07 Aug '12

Hello, I've recently configured a new virtual machine host running Ubuntu 12.04 server with libvirt and KVM. I am configuring WebVirtMgr ( https://github.com/retspen/webvirtmgr/ ) for users to manage machines via a web interface. This requires access to the host using qemu+tcp, which I have configured as follows: /etc/default/libvirt-bin: start_libvirtd="yes" libvirtd_opts="-d -l" /etc/libvirt/libvirtd.conf: listen_tls = 0 listen_tcp = 1 unix_sock_group = "libvirtd" unix_sock_rw_perms = "0770" auth_unix_ro = "none" auth_unix_rw = "none" auth_tcp = "sasl" The libvirt documentation ( http://libvirt.org/auth.html ) does not specify if it is possible to use SASL with a different authentication method other than DIGEST-MD5. I would like to authenticate users via LDAP - is this possible? I configured LDAP authentication via SASL as follows: /etc/sasl2/libvirt.conf pwcheck_method: saslauthd mech_list: PLAIN LOGIN log_level: 5 saslauthd_path: /var/run/saslauthd/mux auxprop_plugin: ldap /etc/saslauthd.conf ldap_servers: ldap://ldap_ip_addr:389/ ldap_search_base: ou=People,dc=x-es,dc=com ldap_auth_method: none ldap_filter: uid=%u ldap_version: 3 /etc/default/saslauthd START=yes DESC="SASL Authentication Daemon" NAME="saslauthd" MECHANISMS="ldap" MECH_OPTIONS="" THREADS=5 OPTIONS="-O /etc/saslauthd.conf -c -m /var/run/saslauthd -r" Testing the configuration works: # testsaslauthd -u myuser -p mypass 0: OK "Success." However, if I attempt to connect over the libvirt TCP connection I am denied: virsh -c qemu+tcp://my_vm_host/system nodeinfo error: authentication failed: Failed to start SASL negotiation: -4 (SASL(-4): no mechanism available: ) error: failed to connect to the hypervisor Do you know what is incorrect in my libvirt config, or is it not possible to authenticate libvirt via SASL+LDAP? If not, is there somewhere that documents all of the supported mechanisms? Thanks, Andrew Martin

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[libvirt-users] using RBD with libvirt 0.9.13
by Jeff Strunk 06 Aug '12

06 Aug '12

I'm having some trouble creating KVM domains with RBD block devices using virsh. I've managed to get virsh to define the domain, but it gives an error when trying to start the domain: error: Failed to start domain test0 error: internal error process exited while connecting to monitor: char device redirected to /dev/pts/3 kvm: -drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw: error connecting kvm: -drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw: could not open disk image rbd:rbd/test0: No such file or directory >From libvirt's QEMU log: 2012-08-06 18:36:57.788+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -name test0 -S -M pc-1.0 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -uuid 3e727624-f336-d674-4e0c-234641fc9987 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/test0.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=19,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:8c:e4:92,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 Domain id=5 is tainted: high-privileges char device redirected to /dev/pts/2 kvm: -drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw: error connecting kvm: -drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw: could not open disk image rbd:rbd/test0: No such file or directory 2012-08-06 18:36:58.353+0000: shutting down I can, however, successfully run a KVM virtual machine with an RBD block device with the following command: kvm -drive file=rbd:rbd/test1,id=drive-virtio-disk0,format=raw -cdrom /var/lib/libvirt/images/ubuntu-12.04-server-amd64.iso kvm will boot with the "-drive file=rbd:rbd/test0,if=none,id=drive-virtio-disk0,format=raw" options, but the disk is not detected unless "if=none" is removed. Has anyone else figured this out? Thank you, Jeff Here is my rbd pool definition: ######### BEGIN <pool type="rbd"> <name>rbd</name> <source> <name>rbd</name> <host name='thinkmate3' port='6789'/> <host name='thinkmate4' port='6789'/> <auth username='admin' type='ceph'> <secret uuid='f0836fcb-9c05-5ccf-653a-eb1d0308e247'/> </auth> </source> </pool> ######### END My rbd volumes: # virsh vol-list rbd Name Path ----------------------------------------- test0 rbd/test0 test1 rbd/test1 test2 rbd/test2 Here is my domain definition: ######### BEGIN <domain type='kvm'> <name>test0</name> <uuid>3e727624-f336-d674-4e0c-234641fc9987</uuid> <memory unit='KiB'>1048576</memory> <currentMemory unit='KiB'>1048576</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64' machine='pc-1.0'>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='network' device='disk'> <driver name='qemu' type='raw'/> <source protocol='rbd' name='rbd/test0'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' target='0' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <interface type='network'> <mac address='52:54:00:8c:e4:92'/> <source network='default'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes'/> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> </domain> ######## END

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[libvirt-users] Opteron_G4 CPU under libvirt 0.9.12
by Michael Beham 06 Aug '12

06 Aug '12

Hi, I´m using libvirt version 0.9.12 under Debian Squeeze with and AMD Opteron 4280. Executing the virsh capabilities command only show me the following flags: <cpu> <arch>x86_64</arch> <model>Opteron_G4</model> <vendor>AMD</vendor> <topology sockets='1' cores='8' threads='2'/> <feature name='nodeid_msr'/> <feature name='wdt'/> <feature name='skinit'/> <feature name='ibs'/> <feature name='osvw'/> <feature name='cr8legacy'/> <feature name='extapic'/> <feature name='cmp_legacy'/> <feature name='fxsr_opt'/> <feature name='mmxext'/> <feature name='osxsave'/> <feature name='monitor'/> <feature name='ht'/> <feature name='vme'/> </cpu> Should not there be more flags supported by the CPU, for example the SVM-Flag for virtualization because executing cat /proc/cpuinfo gives me quite a lot of more flags and also the SVM Flag. Cheers, Mike

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