February 2013 - Users - libvirt List Archives

[libvirt-users] some problem with snapshot by libvirt
by xingxing gao 21 Nov '14

21 Nov '14

Hi,all,i am using libvirt to manage my vm,in these days i am testing the libvirt snapshot ,but meet some problem: the snapshot was created from this command: snapshot-create-as win7 --disk-only --diskspec vda,snapshot=external --diskspec hda,snapshot=no but when i tried to revert from the snapshot which created from the above command ,i got error below: virsh # snapshot-revert win7 1338041515 --force error: unsupported configuration: revert to external disk snapshot not supported yet version: virsh # version Compiled against library: libvir 0.9.4 Using library: libvir 0.9.4 Using API: QEMU 0.9.4 Running hypervisor: QEMU 1.0.93

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[libvirt-users] libvirt v1.0.2 fails to boot LXC container, but v1.0.0 works
by Dennis Jenkins 07 Mar '13

07 Mar '13

Hello. tl;dr = v1.0.0 can boot my LXC containers, v.1.0.1 and v.1.0.2 fails. Paraphrased error message: "lxcContainerMountProcFuse:616 : Failed to mount ..../meminfo" I'd like to know if my host is misconfigured, or my domains, or ... why 1.0.2 and 1.0.1 are not working for me. I've been using libvirt for a while to manage QEMU instances. I have experimented with lxc. Back in October of last year, I had some working LXC containers. I don't recall what version of libvirt I was using at the time. I recently attempted to boot my containers, and they failed (libvirt v1.0.2). I then reverted to v1.0.1 and tried again. Failed with the same result (same error text, just different line numbers). I then reverted to 1.0.0 and my containers boot up just fine. My host runs Gentoo Linux on an Inter core-i5 with 16G ram. I regularly (weekly) apply all available Gentoo updates. I strongly perfer to install all third-party software (including libvirt) from Gentoo portage, not manually from source or git. v1.0.2 is the most recent version available. First, items common to all test cases: *** GCC version ostara ~ # gcc --version gcc (Gentoo 4.6.3 p1.11, pie-0.5.2) 4.6.3 Copyright (C) 2011 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *** Linux kernel ostara ~ # uname -a Linux ostara 3.6.11-gentoo #4 SMP PREEMPT Sat Jan 26 10:27:55 CST 2013 x86_64 Intel(R) Core(TM) i5 CPU 760 @ 2.80GHz GenuineIntel GNU/Linux ostara ~ # zcat /proc/config.gz | egrep "CONFIG_(CGROUP|.*_NS|NAMESPACES)" CONFIG_CGROUPS=y CONFIG_CGROUP_DEBUG=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_DEVICE=y CONFIG_CGROUP_CPUACCT=y CONFIG_CGROUP_PERF=y CONFIG_CGROUP_SCHED=y CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_IPC_NS=y CONFIG_PID_NS=y CONFIG_NET_NS=y CONFIG_NF_CONNTRACK_NETBIOS_NS=m # CONFIG_PATA_NS87415 is not set # CONFIG_PATA_NS87410 is not set *** Gento "USE flags" when building Libvirt: ostara ~ # equery u libvirt | xargs echo -audit -avahi +caps -firewalld -iscsi +libvirtd +lvm +lxc +macvtap +nfs +nls -numa -openvz -parted +pcap -phyp -policykit -python +qemu -rbd +sasl +udev +uml +vepa +virt-network -virtualbox -xen *** libvirt config over-rides: ostara ~ # egrep "^\w" < /etc/libvirt/libvirtd.conf host_uuid = "ab8c50b8-2337-4a02-9274-00923fe8f476" ostara ~ # egrep "^\w" < /etc/libvirt/libvirt.conf ostara ~ # egrep "^\w" < /etc/conf.d/libvirtd rc_need="net" LIBVIRTD_OPTS="--listen" LIBVIRTD_KVM_SHUTDOWN="managedsave" *** Network when no domains (qemu or libvirt) are running: ostara ~ # ifconfig -a | grep -e "^[a-z]" br0: flags=4355<UP,BROADCAST,PROMISC,MULTICAST> mtu 1500 br1: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436 *** Network with libvirt running (libvirt manages "virbr0" for my qemu instances. It attaches to "br0"). ostara ~ # /etc/init.d/libvirtd start * Starting libvirtd ... [ ok ] ostara ~ # ifconfig -a | grep -e "^[a-z]" br0: flags=4355<UP,BROADCAST,PROMISC,MULTICAST> mtu 1500 br1: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436 virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 *** Mounts (cgroup is mounted) ostara ~ # mount rootfs on / type rootfs (rw) proc on /proc type proc (rw,relatime) udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2050547,mode=755) devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000) sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) /dev/md3 on / type ext3 (rw,noatime,errors=continue,barrier=1,data=writeback) tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755) shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime) debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime) cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755) openrc on /sys/fs/cgroup/openrc type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc) cpuset on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) debug on /sys/fs/cgroup/debug type cgroup (rw,nosuid,nodev,noexec,relatime,debug) cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu) cpuacct on /sys/fs/cgroup/cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct) memory on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) devices on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) freezer on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) blkio on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) perf_event on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) /chroot/ssh-jails/jamiel/home/jamiel on /home/jamiel type none (rw,bind) libvirt on /run/libvirt/lxc/dwj-lnx-dev type fuse (rw,nosuid,nodev) *** My LXC containers: ostara ~ # virsh -c lxc:// list --all Id Name State ---------------------------------------------------- - dwj-lnx-dev shut off - vm1 shut off *** Config from one container (itself is Gentoo Linux, sharing some file-systems) ostara ~ # virsh -c lxc:// dumpxml dwj-lnx-dev <domain type='lxc'> <name>dwj-lnx-dev</name> <uuid>fbcd8c3a-9939-12b4-727d-5d3526bc448f</uuid> <memory unit='KiB'>500000</memory> <currentMemory unit='KiB'>500000</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</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> <filesystem type='mount' accessmode='passthrough'> <source dir='/vm/lxc/dwj-lnx-dev'/> <target dir='/'/> </filesystem> <filesystem type='mount' accessmode='passthrough'> <source dir='/usr/portage'/> <target dir='/usr/portage'/> </filesystem> <filesystem type='mount' accessmode='passthrough'> <source dir='/usr/src'/> <target dir='/usr/src'/> </filesystem> <filesystem type='mount' accessmode='passthrough'> <source dir='/home'/> <target dir='/home'/> </filesystem> <interface type='bridge'> <mac address='82:00:00:00:01:00'/> <source bridge='br0'/> </interface> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> </domain> ostara ~ # ls -l /vm/lxc/dwj-lnx-dev total 108 drwxr-xr-x 2 root root 4096 Oct 18 09:38 bin drwxr-xr-x 2 root root 4096 Apr 27 2011 boot drwxr-xr-x 10 root root 45056 Jan 26 10:52 dev drwxr-xr-x 53 root root 4096 Feb 8 11:23 etc drwxr-xr-x 2 root root 4096 Apr 27 2011 home lrwxrwxrwx 1 root root 5 Oct 18 00:46 lib -> lib64 drwxr-xr-x 2 root root 4096 Oct 18 00:51 lib32 drwxr-xr-x 10 root root 4096 Oct 18 09:11 lib64 drwxr-xr-x 4 root root 4096 Apr 27 2011 mnt drwxr-xr-x 4 root root 4096 May 22 2012 opt drwxr-xr-x 2 root root 4096 Apr 27 2011 proc drwx------ 3 root root 4096 Oct 18 08:13 root drwxr-xr-x 2 root root 4096 Oct 18 00:57 run drwxr-xr-x 2 root root 4096 Oct 18 09:11 sbin drwxr-xr-x 2 root root 4096 Apr 27 2011 sys drwxrwxrwt 4 root root 4096 Feb 8 11:23 tmp drwxr-xr-x 13 root root 4096 May 4 2011 usr drwxr-xr-x 14 root root 4096 May 22 2012 var ************ v 1.0.0 works great! ostara ~ # virsh --version 1.0.0 ostara ~ # virsh -c lxc:// list --all Id Name State ---------------------------------------------------- - dwj-lnx-dev shut off - vm1 shut off ostara ~ # virsh -c lxc:// start dwj-lnx-dev Domain dwj-lnx-dev started ostara ~ # virsh -c lxc:// list --all Id Name State ---------------------------------------------------- 21364 dwj-lnx-dev running - vm1 shut off ************* v 1.0.2 fails: ostara ~ # /etc/init.d/libvirtd start * Caching service dependencies ... [ ok ] * Starting libvirtd ... [ ok ] ostara ~ # virsh --version 1.0.2 ostara ~ # ls -l /var/lib/libvirt/lxc/ total 0 ostara ~ # virsh -c lxc:// start dwj-lnx-dev error: Failed to start domain dwj-lnx-dev error: internal error guest failed to start: PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=fbcd8c3a-9939-12b4-727d-5d3526bc448f LIBVIRT_LXC_UUID=fbcd8c3a-9939-12b4-727d-5d3526bc448f LIBVIRT_LXC_NAME=dwj-lnx-dev /sbin/init 2013-02-08 18:09:28.402+0000: 1: info : libvirt version: 1.0.2 2013-02-08 18:09:28.402+0000: 1: error : lxcContainerMountProcFuse:616 : Failed to mount /.oldroot//var/run/libvirt/lxc/dwj-lnx-dev/meminfo on /proc/meminfo: No such file or directory 2013-02-08 18:09:28.402+0000: 23867: info : libvirt version: 1.0.2 2013-02-08 18:09:28.402+0000: 23867: error : virLXCControllerRun:1468 : error receiving signal from container: Input/output error 2013-02-08 18:09:28.814+0000: 23867: error : virCommandWait:2287 : internal error Child process (ip link del veth1) unexpected exit status 1: Cannot find device "veth1" ostara ~ # ls -l /var/lib/libvirt/lxc/ total 0 ostara ~ # mount | grep libvirt libvirt on /run/libvirt/lxc/dwj-lnx-dev type fuse (rw,nosuid,nodev) ostara ~ # ls -l /run/libvirt/lxc total 0 drwxr-xr-x 2 root root 40 Feb 8 12:09 dwj-lnx-dev srwx------ 1 root root 0 Feb 8 12:09 dwj-lnx-dev.sock srwx------ 1 root root 0 Feb 8 11:22 vm1.sock ostara ~ # ls -l /run/libvirt/lxc/dwj-lnx-dev total 0 *** "veth1" (regarding the rror "Cannot find device") *** "veth1" is still no created. But I do know that when *** using libvirt v1.0.0, and the container is running, the device DOES exist (not shown above) ostara ~ # ifconfig -a | egrep "^\w" br0: flags=4355<UP,BROADCAST,PROMISC,MULTICAST> mtu 1500 br1: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436 virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 *** The last entry in "/var/log/libvirt/lxc/dwj-lnx-dev.log" 2013-02-08 18:09:27.771+0000: starting up PATH=/bin:/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.3:/usr/x86_64-pc-linux-gnu/i686-pc-mingw32/gcc-bin/4.7.2 LIBVIRT_DEBUG=3 LIBVIRT_LOG_OUTPUTS=3:stderr /usr/libexec/libvirt_lxc --name dwj-lnx-dev --console 20 --security=none --handshake 23 --background --veth veth1 PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=fbcd8c3a-9939-12b4-727d-5d3526bc448f LIBVIRT_LXC_UUID=fbcd8c3a-9939-12b4-727d-5d3526bc448f LIBVIRT_LXC_NAME=dwj-lnx-dev /sbin/init 2013-02-08 18:09:28.402+0000: 1: info : libvirt version: 1.0.2 2013-02-08 18:09:28.402+0000: 1: error : lxcContainerMountProcFuse:616 : Failed to mount /.oldroot//var/run/libvirt/lxc/dwj-lnx-dev/meminfo on /proc/meminfo: No such file or directory 2013-02-08 18:09:28.402+0000: 23867: info : libvirt version: 1.0.2 2013-02-08 18:09:28.402+0000: 23867: error : virLXCControllerRun:1468 : error receiving signal from container: Input/output error 2013-02-08 18:09:28.814+0000: 23867: error : virCommandWait:2287 : internal error Child process (ip link del veth1) unexpected exit status 1: Cannot find device "veth1"

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[libvirt-users] lxc--sshd
by Brandon Foster 06 Mar '13

06 Mar '13

Hey all, I am new to libvirt lxc and am trying to get a container that i can ssh to. So far i've booted up a container and gave it an Ip address, it can ping out and I can ping it but I cannot get ssh to work. When i try to run an ssh command inside the container I get a command not found error. here is my xml file <domain type='lxc'> <name>helloworld</name> <memory>102400</memory> <os> <type>exe</type> <init>/bin/sh</init> </os> <devices> <console type='pty'/> <filesystem type='mount'> <source dir='/export/helloworld/config'/> <target dir='/etc/httpd'/> </filesystem> <filesystem type='mount'> <source dir='/export/helloworld/data'/> <target dir='/var/www'/> </filesystem> <interface type='bridge'> <mac address='52:54:00:5e:02:45'/> <source bridge='br0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> <model type='virtio' /> </interface> </devices> </domain> I havent restricted it with busybox for simplicity thinking it was because I wasn't allowing it access to necessary ssh files, but Im not sure what I am missing now. surely someone has done this before. thanks -- Brandon Foster Infrastructure Administrator Liferay, Inc. Enterprise. Open Source. For life.

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[libvirt-users] VM can not start
by Qinghua Cheng 01 Mar '13

01 Mar '13

Hi Experts, I have libvirt 1.0.2 downloaded and build on my RH. And I also downloaded qemu 1.4.0 and build on this machine. When I tried to start my VM ubuntu12, get error messages: error: Failed to start domain ubuntu12 error: internal error Process exited while reading console log output: I have no idea what does this message mean. Could you please help point out what I should do next? Thanks, Conny

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[libvirt-users] Libvirt not creating .vmdk file and .nvram files on vmware esx host
by Nithin Mp 28 Feb '13

28 Feb '13

Hi, I am currently using libvirt API(java api) for creating VMs in esxi host. I am passing commands as follows:(trying from terminal) virsh -c esx://192.168.0.144?no_verify=1 define /home/bm/eee.xml Domain eee defined from /home/bm/eee.xml I have attached the eee.xml file and the eee.vmx from the esxi datastore with this mail. the versions i am using is : virsh # version Compiled against library: libvirt 1.0.0 Using library: libvirt 1.0.0 Using API: ESX 1.0.0 Running hypervisor: ESX 5.0.0 The system i am using is Ubuntu 12.04 LTS 64 bit Please reply me.Waiting for your response. -- *Thanks & Regards* NITHIN.M.P

1 0

[libvirt-users] With no luck with virDomainGetInfo and virDomainMemoryStats for memory usage of a running vm
by 张章 28 Feb '13

28 Feb '13

Hi, all I am trying to get used memory of a running vm using libvirt and then to calculate the memory usage, but with no luck. 1.The used memory returned by virDomainGetInfo is equal to max memory with no virtio balloon driver set. When using virtio balloon driver and setting currentMemory less than memory in the xml, the used memory returned by virDomainGetInfo is nearly equal to currentMemroy. Again, I can't get the memory used by vm. 2. When I turned to virDomainMemoryStats, I can only get two values : Current balloon value and Resident Set Size of the process running the domain. (for kvm 0.14.1 and libvirt 1.0.2) That's not what I want. I only need to know how much memory used by the running vm, so I can calculate the memory usage of this vm. (like the used memory return by cmd "free -m") Any hints? Many thanks! Z. ZhangNational Research Center for intelligent Computing Systems,ICT, Chinese Academy of Sciences

1 0

[libvirt-users] Deleting and coalescing live snapshots
by Skardal, Harald 28 Feb '13

28 Feb '13

All, I have a service that takes new live KVM snapshots Si regularly, keeps a fixed number N (Si ,..,Si-N+1), and therefore needs to delete Si-N in this cycle. Until libvirt includes support for this capability that is said to be available in qemu, what is a safe workflow to delete old live KVM snapshots w/o losing data. Do I need to pause/shut down the VM? The development environment is Fedora 18 with qemu, libvirtd and libvirt upgrades to the more recent stable versions. Harald Skardal, Stratus Technologies.

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[libvirt-users] The accurate CPU usage of a domain?
by 张章 28 Feb '13

28 Feb '13

Hi,all I want to get a relatively accurate cpu usage of a domain. I have a few questions about virDomainGetInfo: struct virDomainInfo{ unsigned char state : //the running state, one of virDomainState unsigned long maxMem :// the maximum memory in KBytes allowed unsigned long memory :// the memory in KBytes used by the domain unsigned short nrVirtCpu :// the number of virtual CPUs for the domain unsigned long long cpuTime : //the CPU time used in nanoseconds } If a domain is assigned to 4 vcpus and my machine has 6 physical cores, then the cpuTime in virDomainInfo should be the sum of cpu time of the 4 vcpus. When I want to calculate the cpu usage, which of the following is more accurate? 1/4 * cpu time / total time or 4/6 * cpu time / total time or just cpu time / total time regardszhangzhang

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[libvirt-users] error when call migrate function "error: invalid argument: qemuDomainMigratePrepare3: unsupported flags (0x200)"
by loic.cloatre＠orange.com 27 Feb '13

27 Feb '13

Hello, I try to migrate a VM and I get this error : loic@loic-VirtualBox:~/workspace/src/build/bin$ ./virsh --connect qemu:///system migrate --live vmUbuntuPartage2CacheWriteBack qemu+ssh://192.168.10x.2x/system --unsafe loic(a)192.168.10x.2x's password: error: invalid argument: qemuDomainMigratePrepare3: unsupported flags (0x200) Does somebody know this error? I am working on windows 7, I have: 1) Virtual box with two vms ubuntu desktop 12.04: "VM1" and "VM40" 2) One shared hard drive build with virtual box: "newDiskSharedFev.vdi" In my VM1: 1) I have build one "vmUbuntuPartage" ubuntu server 12.10 on shared disk with this command: sudo virt-install -n vmUbuntuPartage -r 1500 --disk path=/media/partage/newDiskSharedFev.vdi,bus=virtio,size=4,cache=writeback -c /home/loic/Downloads/ubuntu-12.04.1-server-i386.iso --network network=default,model=virtio --connect=qemu:///system --vnc -v 2) I have download and built libvirt-0.10.0 (I can give configure command if necessary) In my VM40: 1) I install libvirt with apt-get 2) I have mounted shared folder with "newDiskSharedFev.vdi" So, in my VM1 I try to migrate my "vmUbuntuPartage" from VM1 to VM40 and I get error above. Here my configuration file /etc/libvirt/qemu/ vmUbuntuPartage.xml --> I try to change <driver name='qemu' type='raw' cache='none or writeback or writetrough'/> ================  <domain type='qemu'> <name>vmUbuntuPartage</name> <uuid>5d38cf86-d9c5-b0f2-cc03-982a1f18bede</uuid> <memory>1536000</memory> <currentMemory>1536000</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686' 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/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/media/partage/SharedDiskUbuntu.vdi'/> <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' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:8b:b1:80'/> <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> ================== Loïc Cloâtre _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, France Telecom - Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, France Telecom - Orange is not liable for messages that have been modified, changed or falsified. Thank you.

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[libvirt-users] questions of libvirt's lxc
by Han Yuejuan-B42073 27 Feb '13

27 Feb '13

Hi all, I am trying to init lxc by libvirt instead of using lxc tools. I have several questions as following: software platform: integrating libvirt-0.10.1 to yocto based on sdk1.3 hardwatre platform: p4080ds steps: root@p4080ds:~# cat > container.xml <<EOF <domain type='lxc'> <name>container</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</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> <EOF root@p4080ds:~# libvirtd -d root@p4080ds:~# virsh --connect lxc:/// define container.xml Domain container defined from container.xml root@p4080ds:~# virsh --connect lxc:/// start container error: Failed to start domain container error: internal error Network 'default' is not active. To resolve this issue I change the container.xml to as below: <domain type='lxc'> <name>container</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</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='bridge'> <source network='br0'/> <mac address='00:11:22:34:34:34'/> (I am not sure it will make difference) </interface> <console type='pty' /> </devices> </domain> then error infos as below: root@p4080ds:~# virsh --connect lxc:/// define container.xml error: Failed to define domain from container.xml error: internal error No <source> 'bridge' attribute specified with <interface type='bridge'/> Q1: What an appropriate virtual network is supported by virsh for error mentioned above? Linux container support several types of network such as veth, vlan, macvlan, phys and how to edit different xml file for different network type? Q2: There are two kinds of containers , application container and system container. If using lxc tools, lxc-execute will establish an application container and lxc-create with lxc-start will establish a system container. So with libvirt how to set up these two kinds of containers? by different xml file or by different virsh cmds? Q3: If I want to define a rootfs (such as busybox) for container how I edit the relative xml file? anyone has related infos that can be shared? Q4:Cgroups manage and control resources using for lxc containers. If use libvirt how to realise the similar resource tuning for containers based on PowerPC? There are limited infos at: https://www.berrange.com/posts/2009/12/03/using-cgroups-with-libvirt-and-lx… Regards, Yuejuan

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