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[libvirt-users] libvirt with lxc: internal error The 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted
by unicell 08 Nov '12

08 Nov '12

Hi, I'm running OpenStack to manage LXC instance through libvirt. The same setting runs perfectly well on Ubuntu 12.04, while on CentOS 6u3, libvirt dumped following message when starting lxc instance. virsh -c lxc:/// start instance-00000032 error: internal error The 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted Really appreciated if someone could shed some lights. Seems to some libvirt / cgroup settings related. $ cat /proc/mounts .. none /cgroup cgroup rw,relatime,net_prio,perf_event,blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,cpuset 0 0 .. $ chkconfig --list | grep cg cgconfig 0:off 1:off 2:off 3:off 4:off 5:off 6:off cgred 0:off 1:off 2:off 3:off 4:off 5:off 6:off xml definition -- <domain type="lxc"> <uuid>252a2dc5-452c-4e9c-a593-8c386c9f47e6</uuid> <name>instance-00000032</name> <memory>524288</memory> <vcpu>2</vcpu> <os> <type>exe</type> <cmdline>console=ttyS0</cmdline> <init>/sbin/init</init> </os> <clock offset="utc"/> <devices> <filesystem type="mount"> <source dir="/home/stack/nova_state/instances/instance-00000032/rootfs"/> <target dir="/"/> </filesystem> <interface type="bridge"> <mac address="fa:16:3e:73:67:54"/> <source bridge="br100"/> <filterref filter="nova-instance-instance-00000032-fa163e736754"> <parameter name="IP" value="10.0.0.8"/> <parameter name="DHCPSERVER" value="10.0.0.1"/> <parameter name="PROJNET" value="10.0.0.0"/> <parameter name="PROJMASK" value="255.255.255.0"/> </filterref> </interface> <console type="pty"/> </devices> </domain> Log message with LIBVIRT_DEBUG=1 if that is helpful. http://pastebin.com/LjZ6Euma -- Qiu Yu

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[libvirt-users] help filtering spam
by Joe Linoff 07 Nov '12

07 Nov '12

Hi Folks: I am now receiving spam email every few minutes as result of signing up for this mailing list and it is starting to become a challenge. Has anyone had any success filtering it? Regards, Joe

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[libvirt-users] No driver found during virt-install / kickstart
by Joe Linoff 07 Nov '12

07 Nov '12

Hi Folks: I am getting a "No driver found" dialogue when I try to build a guest using virt-install using a kickstart file. I am stuck. I am not sure how to fix or even debug this problem. Can anyone suggest a way forward? Here are the commands that I am using: $ # ================================================================ $ # Create the volume $ # ================================================================ virsh vol-create default /tools/vm/guests/guest1-vol.xml $ # ================================================================ $ # Create a mount for the virt-install --location option. $ # ================================================================ mkdir /opt/mnt mount -o loop,ro /tools/iso/CentOS-6.3-x86_64-bin-DVD1.iso /opt/mnt $ # ================================================================ $ # Create the kickstart file (used system-config-kickstart). $ # ================================================================ $ cat /export/tools/vm/guests/guest1-ks.cfg #platform=x86, AMD64, or Intel EM64T #version=DEVEL # Firewall configuration firewall --enabled --http --ssh # Install OS instead of upgrade install # Use CDROM installation media cdrom # Root password rootpw --iscrypted $1$DAzH1SN3$6yzxoq6oRrXNw.qMkJU0H1 # System authorization information auth --useshadow --passalgo=sha512 # Use graphical install graphical firstboot --disable # System keyboard keyboard us # System language lang en_US # SELinux configuration selinux --enforcing # Installation logging level logging --level=debug # System timezone timezone America/Los_Angeles # Network information network --bootproto=static --device=eth0 --gateway=192.168.2.1 --ip=192.168.2.68 --nameserver=192.168.2.71 --netmask=255.255.255.0 --onboot=on # System bootloader configuration bootloader --location=mbr # Clear the Master Boot Record zerombr # Partition clearing information clearpart --all %packages @base @client-mgmt-tools @compat-libraries @console-internet @emacs @hardware-monitoring @network-file-system-client @network-tools @performance @postgresql @security-tools @system-admin-tools @virtualization-client %end EOF $ # ================================================================ $ # Run virt-install $ # ================================================================ virt-install \ --accelerate \ --location "/opt/mnt" \ --disk device=disk,path="/var/lib/libvirt/images/guest1.img" \ --graphics vnc \ --name "guest1" \ --os-type linux \ --os-variant rhel6 \ --ram 2048 \ --vcpus 2,maxvcpus=2 \ -v \ -w bridge:br0 \ -x 'ks=nfs:192.168.2.140:/export/tools/vm/guests/guest1-ks.cfg ksdevice=eth0 ip=192.168.2.82 netmask=255.255.255.0 dns=192.168.2.71,8.8.8.8 gateway=192.168.2.1' Regards, Joe

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[libvirt-users] Failed to bind socket to '/var/run/libvirt/libvirt-sock': Permission denied
by 何鑫 06 Nov '12

06 Nov '12

Hi all, When I start self-built libvirtd by "libvirtd -d -l -f libvirtd.conf", it shows that error : virNetSocketNewListenUNIX:346 : Failed to bind socket to '/var/run/libvirt/libvirt-sock': Permission denied I have removed some requested comments in libvirtd.conf. The key settings are shown as below: listen_tcp = 1 tcp_port = "16509" listen_addr = "0.0.0.0" unix_sock_group = "root" unix_sock_rw_perms = "0770" unix_sock_ro_perms = "0777" unix_sock_dir = "/var/run/libvirt" Is there any thing wrong? Need I start libvirtd by root? Thanks a lot! Best Regards!Corey

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[libvirt-users] can not create "qcow2" format volume by Java library.
by zhijun liu 06 Nov '12

06 Nov '12

hi，all, when I use Java library to create volume ,specified format "qcow2"，but when I check it use qemu-img info ,it show format is "raw".。 I think it a bug,can you fix it .. thanks very much. the java library version：0.4.8 libvirt version：0.9.8

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[libvirt-users] re-create disk image file
by Joe Linoff 06 Nov '12

06 Nov '12

Hi Everybody: I am curious about how to re-create a disk image file from a running guest when the original disk image file is accidentally deleted. This came up recently during a test scenario but I couldn't figure out how to do it. Thanks, Joe

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[libvirt-users] is this mailing list active? i am seeing low activity and am receiving spam
by Joe Linoff 06 Nov '12

06 Nov '12

Hi Folks: Is this mailing list active? It seems to have pretty low activity and I have received several spam messages since signing up. Regards, Joe

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[libvirt-users] CPU Mode= Host passthrough
by Michael Beham 06 Nov '12

06 Nov '12

Hi, I´m doing some research on Nested Virtualization with KVM and Xen. My cpu on bare-metal system is a Opteron_G4 --> (AMD Opteron 4280). qemu-version 1.0; libvirt 0.9.12 For nesting KVM in KVM I´m adding the <cpu mode='host-passthrough'/> command to the XML-File of the VM on Layer 0. So I´m able to install KVM in KVM and create nested guests at Layer 2. L2 --> Nested VM L1 --> KVM / XEN L0 --> KVM If i try the same with installing Xen in the VM on Layer 1 Xen don´t boot and I get following error: Panic on CPU 0: GENERAL PROTECTION FAULT [error_code=0000] If I remove <cpu mode='host-passthrough'/> command from the VM´s XML Xen boot is successful and Nesting Xen in KVM works! May this problem depends on the following problem --> https://bugzilla.redhat.com/show_bug.cgi?id=804224

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[libvirt-users] virsh vol-create-as failing on NFS automount for chmod (dynamic_ownership = 0)
by Joe Linoff 05 Nov '12

05 Nov '12

Hi Everyone: I am trying to create a volume using the vol-create-as command but it fails with an "Operation not permitted" error. It appears to be caused by an attempt to run chown on an NFS mounted file system but I have set dynamic_ownership to 0 in /etc/qemu.conf. Is it possible to disable the chown operation? If not, is there a guide that describes how to create storage pools on NFS filers? I have read http://libvirt.org/storage.html but there was no discussion of to work around this problem. Any help would be greatly appreciated. Here is the command and error message: $ virsh vol-create-as default webtst 10G error: Failed to create vol webtst error: cannot create path '/var/lib/libvirt/images/webtst': Operation not permitted The /var/lib/libvirt/images is linked to a common filer: /shared/vm/images. The permissions on the directory are 0777. When I looked at tail /var/log/libvirt/libvirtd.log it showed that the problem was occurring because a chown command: 2012-11-05 02:55:44.841+0000: 26384: info : libvirt version: 0.9.10, package: 21.el6_3.5 (CentOS BuildSystem <http://bugs.centos.org>, 2012-10-11-13:57:12, c6b9.bsys.dev.centos.org) 2012-11-05 02:55:44.841+0000: 26384: error : virFileOpenForceOwnerMode:796 : cannot chown '/var/lib/libvirt/images/webtst' to (0, 0): Operation not permitted 2012-11-05 02:55:44.841+0000: 26384: error : virStorageBackendCreateRaw:401 : cannot create path '/var/lib/libvirt/images/webtst': Operation not permitted Regards, Joe

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[libvirt-users] error: Unable to add port vnet1 to OVS bridge ovsbr: Operation not permitted
by Radhika Niranjan 03 Nov '12

03 Nov '12

Hi, > > I am using libvirt version 0.9.13 with Ubuntu 12.10 > > When I try to start a VM with an openvswitch bridge interface I get the > error: > > error: Failed to start domain kvm113-2 > error: Unable to add port vnet1 to OVS bridge ovsbr: Operation not > permitted > > > Here is my bridge configuration: > <interface type='bridge'> > <mac address='52:54:00:c7:db:d2'/> > <source bridge='ovsbr'/> > <virtualport type='openvswitch'> > <parameters interfaceid='40e21558-217c-d8ef-c9a9-5275fa4b4a46'/> > </virtualport> > <model type='virtio'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x05' > function='0x0'/> > </interface> > > > This configuration previously worked fine. > > Request your help and insights. > > WIth best regards > Radhika >

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