November 2012 - Users - libvirt List Archives

[libvirt-users] virt-install kickstart local file
by Joe Linoff 14 Nov '12

14 Nov '12

Hi Everybody: I am trying to get virt-install to work with a kickstart file that is on the local file system. I tried using the --initrd-inject="/tmp" --extra-args="ks=file:/myks.cfg" but I got this error message: ERROR --extra-args only work if specified with --location. Here is the basic command: virt-install \ --accelerate \ --cdrom /tools/iso/CentOS-6.3-x86_64-bin-DVD1.iso \ --disk device=disk,path="/var/lib/libvirt/images/myguest.img" \ --graphics vnc \ --name myguest \ --os-type linux \ --os-variant rhel6 \ --ram 2048 \ --vpcus 1,maxvcpus=4 \ --initrd-inject "/tmp" \ --extra-args "ks=file:/myks.cfg" Why do I need the location? I thought that was only used when installatiing from a distribution tree. I am using a DVD ISO image. If I have to use it, how would I specify it? If this approach won't work, I could move the ks.cfg file to an NFS mounted file system but I am not sure what the syntax is for that. I am running this on a CentOS 6.3 system. libvirt: 0.9.10 qemu: 0.12.1 Thank you, Joe

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[libvirt-users] virt-viewer X forwarding through ssh broken since FC17 upgrade?
by Ken Coar 14 Nov '12

14 Nov '12

Ever since I upgraded my laptop from FC15 to FC17, I've been getting this message when I ssh to some RHEL6 hosts inside Red Hat. In particular, I'm trying to do this: virt-viewer --connect \ qemu+ssh://kvm11.devlab.phx1.redhat.com/system \ bork-s01.candlepin.dev.devlab.phx1.redhat.com This is the message I get: X11 forwarding request failed on channel 0 A viewer window pops up for a fraction of a second and then goes away. Using -vvvv on the local ssh command gives a few possibly related messages: debug2: x11_get_proto: /usr/bin/xauth list :0.0 2>/dev/null debug1: Requesting X11 forwarding with authentication spoofing. debug2: channel 0: request x11-req confirm 1 debug1: Requesting authentication agent forwarding. debug2: channel 0: request auth-agent-req(a)openssh.com confirm 0 : debug1: Remote: No xauth program; cannot forward with spoofing. This is new, and, not being an X maven, largely opaque to me. xauth is provided by package xorg-x11-xauth, which is typically *not* installed. Installing it on the system to which I'm trying to ssh gets rid of the message, but doesn't change the up-down behaviour of the viewer window. Temporarily moving my local /usr/bin/xauth leads to this message in addition: Warning: No xauth data; using fake authentication data for X11 forwarding. X11 forwarding request failed on channel 0 Since there's a window popping up at all, I doubt this is directly related to the problem getting the viewer to run. However, on systems *with* xauth installed 'echo $DISPLAY' shows a value, but on those *without* xauth, $DISPLAY is null. (So why am I getting any sort of X popup at all in that case?) Has anyone else seen this, and hopefully have a solution? The problem is actually two-fold: 1. Why 'X11 forwarding failed' and how to get rid of it/revert to behaviour in previous versions; and 2. Why is virt-viewer dying and how to keep it alive. (Again, how to revert to 'it *used* to work' conditions. ;-) ) Thanks! -- #ken B-)} Ken Coar, RHCE, RHCSA, Sanagendamgagwedweinini IT Engineering Tower, Red Hat/RDU "Millennium hand and shrimp!"

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[libvirt-users] difference between ` virsh save ` and `virsh snapshot
by zhijun liu 13 Nov '12

13 Nov '12

what the difference between ` virsh save ` and `virsh snapshot`? are they all used for backup for vm?have any details articles to introduce vm bakcup or image bakcup with libvirt? thanks in advance. liuzhijun

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[libvirt-users] Threads per vCPU and vCPU clock
by Vinicius Gonçalves Braga 13 Nov '12

13 Nov '12

Hi, is there a way to get the number of threads per vCPU and the vCPU clock? Thanks!

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[libvirt-users] the acl mode of files created by libvirtd
by Hao.Zhang 13 Nov '12

13 Nov '12

Hi, all I use virsh save command to dump a domain, the mode is 0600, and belongs to "root", how can i change the mode? Thanks. William -- That night, I thanked God for seeing me thought the day of days and prayed I would make it through tomorrow. I also promised that if some day I could get home again, I would find a nice peaceful town and spend rest of my life in peace.

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[libvirt-users] where is libvirt-python document??
by 宣铭艺 12 Nov '12

12 Nov '12

Hi libvirt users: Who can tell me where is the fucking doc? I want to use libvirt-python in my project.But I can't found the doc. I only found "TBD" in http://libvirt.org/guide/html/Application_Development_Guide-Language_Bindin… Did I miss something? Thanks. -- 樱宝宝: http://www.xuanmingyi.com

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[libvirt-users] the acl mode of files created by libvirtd
by Hao.Zhang 12 Nov '12

12 Nov '12

Hi, all I use virsh save command to dump a domain, the mode is 0600, and belongs to "root", how can i change the mode? William -- That night, I thanked God for seeing me thought the day of days and prayed I would make it through tomorrow. I also promised that if some day I could get home again, I would find a nice peaceful town and spend rest of my life in peace.

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[libvirt-users] [LXC][Openstack] Clarifications needed on usage of libvirt-lxc for openstack
by Sujay M 11 Nov '12

11 Nov '12

Hi everyone, I've some doubts regarding the usage/working of libvirt-lxc with openstack. I'm doing a project titled "Low density virtualization for Storage cloud" 1. Can i use libvirt for lxc with Openstack swift alone (excluding nova, glance and keystone)? If no what other openstack components should i use for virtualization? (Is it necessary to install openstack nova to do virtualization with libvirt-lxc?) 2. How virtualization for storage services work ? Any good articles. 3. I want to set up a cloud storage environment with low density virtualization ie lxc. I'm using Openstack swift (Object storage) for storage services. I want to virtualize this. Few resources on how i can do this using libvirt-lxc? -- Best Regards, Sujay M Final year B.Tech Computer Engineering NITK Surathkal contact: +918971897571

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[libvirt-users] move VM disk images between storage pools on the same host
by Paul Raines 10 Nov '12

10 Nov '12

I created a new LVM type storage pool on my server and would like to move my VM disk volumes in a directory-based pool into this new pool. But I cannot figure out how that is done. I find plenty of information on how to migrate live VM images from one host to another, but not on how to just move one live from one storage pool to another on the same host. If it cannot be done live, how an I do it non-live? I guess non-live I could clone, but that would change the MAC address. Just seems that if libvirt can migrate live it should be able to move a VM between storage pools on the same host even easier. --------------------------------------------------------------- Paul Raines http://help.nmr.mgh.harvard.edu MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging 149 (2301) 13th Street Charlestown, MA 02129 USA The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.

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[libvirt-users] Updating an "interface" device has no effect on network filters
by Guido Winkelmann 10 Nov '12

10 Nov '12

Hi, I am trying to update the network filters on running guest machines (qemu backend) without having to restart the domain. Say I have a running domain "test" with this interface: <interface type='bridge'> <mac address='52:54:00:84:6d:6d'/> <source bridge='virbr1'/> <model type='virtio'/> <filterref filter='clean-traffic-with-v6'> <parameter name='IP' value='172.18.1.9'/> <parameter name='IPV6' value='fe80::5054:ff:fe84:6d6d'/> <parameter name='MAC' value='52:54:00:84:6d:6d'/> </filterref> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Now I want that domain to be able to use an additional IP address for some reason, so I write a file uppdevice.xml with this content: <interface type='bridge'> <mac address='52:54:00:84:6d:6d'/> <source bridge='virbr1'/> <model type='virtio'/> <filterref filter='clean-traffic-with-v6'> <parameter name='IP' value='172.18.1.9'/> <parameter name='IP' value='172.18.1.10'/> <parameter name='IPV6' value='fe80::5054:ff:fe84:6d6d'/> <parameter name='MAC' value='52:54:00:84:6d:6d'/> </filterref> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> and run update-device test-cpu-restrict2 upddevice.xml in virsh. This appears to work without problems and produces no error messages (it prints "Device updated successfully"), except the ebtables script on the host machine does not get updated after that and consequently, the new IP address is not usable. Regards, Guido

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[libvirt-users] Failed to access console after launching LXC through libvirt
by unicell 10 Nov '12

10 Nov '12

Hi, I'm trying to manage LXC instances through OpenStack, which use libvirt as a virtualization driver layer. After launching LXC instance, I simply could not attach to the console. virsh # list Id Name State ---------------------------------- 14366 instance-00000078 running virsh # console 14366 Connected to domain instance-00000078 Escape character is ^] And it keeps stuck here. Initially I thought it could be a cgroup device config issue, and tried to "echo ‘c 5:1 rwm' >/cgroup/devices/libvirt/lxc/instance-00000078/devices.allow“, to add /dev/console access right to the container. But it does not work, console stilll not working. Before the cgroup tweaking, devices.list are as follows [root@localhost libvirt]# cat /cgroup/devices/libvirt/lxc/instance-0000007a/devices.list c 1:3 rwm c 1:5 rwm c 1:7 rwm c 1:8 rwm c 1:9 rwm c 5:0 rwm c 5:2 rwm c 136:* rwm I'm not quite sure what kind of issue could possibly cause this console access issue. Cause I'm now using two different guest OS templates on two different host OSes. Following are some symptoms I observed. * (g) for container guest OS * (h) for host OS * NOTE: Ubuntu guest os are generated by lxc-create -t ubuntu, which is an Ubuntu 12.04 based lxc template. CentOS guest os are handcrafted by myself, taking reference of http://wiki.1tux.org/wiki/Lxc/Installation/Guest/Centos/6 1. Ubuntu (g) launched by lxc-start on Ubuntu 12.04 host, console works 2. Ubuntu (g) launched by OpenStack / libvirt on Ubuntu 12.04 host, console works 3. Ubuntu (g) launched by OpenStack / libvirt on CentOS 6.3 host, console NOT works 4. CentOS (g) launched by lxc-start on Ubuntu 12.04 host, console works 5. CentOS (g) launched by OpenStack / libvirt on Ubuntu12.04 host, console NOT works 6. CentOS (g) launched by OpenStack / libvirt on CentOS 6.3 host, console NOT works So somehow I feel it could be something related to LXC template rootfs, but Host OS do make a difference (2 vs. 3). lxc-start / libvirt also makes a difference (4 vs. 5), but that might be caused by cgroup setting. Could someone shed me some clues to further digging this issue? Thanks! -- Qiu Yu

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[libvirt-users] A warning about "async message processing ."
by xuanmao_001 09 Nov '12

09 Nov '12

Hi, all: when I used virsh connect host like "virsh connect qemu+tcp://root@ip_address/system", I had a warning message about "warning: virNetClientIncomingEvent: 1660 : Something went wrong during async message processing" But I can even operated. Is there a reason can cause the warning? thanks. xuanmao_001

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[libvirt-users] OpenStack+libvirt+lxc: lxcContainerGetSubtree:1199 : Failed to read /proc/mounts
by unicell 09 Nov '12

09 Nov '12

Hi, I'm running OpenStack on CentOS 6.3 to manage lxc instances. And running into series of problem relating libvirt and lxc interaction. For example, libvirt_lxc segfault ( https://bugzilla.redhat.com/show_bug.cgi?id=874549) which has an upstream fix. And another bugs such as fail to start when SELinux disabled. Finally, I decides to adopt libvirt 0.10.2, self compiled from libvirt-0.10.2-1.fc17.src.rpm. And now coming across following message when starting lxc container. lxcContainerGetSubtree:1199 : Failed to read /proc/mounts: No such file or directory Could it be something related to my container template setting? Or host setting? Or simply just another bug? I'm not a libvirt guy, so please, do shed me some lights on how to fix it. Thanks very much. libvirtd log with LIBVIRT_DEBUG=1 -- 2012-11-08 12:41:10.106+0000: 28362: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:41:10.106+0000: 28362: error : virLXCControllerRun:1418 : error receiving signal from container: Input/output error 2012-11-08 12:41:10.222+0000: 24641: error : virNetDevSetOnline:536 : Cannot get interface flags on 'veth0': No such device 2012-11-08 12:41:10.227+0000: 24641: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "veth0" not in key map 2012-11-08 12:41:10.229+0000: 24641: error : virNetDevGetIndex:653 : Unable to get index for interface veth0: No such device 2012-11-08 12:41:10.370+0000: 24640: error : virLXCProcessStop:701 : internal error Invalid PID -1 for container 2012-11-08 12:41:10.370+0000: 24640: error : virLXCProcessStop:701 : internal error Invalid PID -1 for container 2012-11-08 12:48:26.136+0000: 30706: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:48:26.136+0000: 30706: error : virDomainObjParseNode:10094 : XML error: unexpected root element <domain>, expecting <domstatus> 2012-11-08 12:48:50.878+0000: 30695: error : virNetSocketReadWire:1176 : Cannot recv data: Connection reset by peer 2012-11-08 12:48:50.977+0000: 30698: error : virLXCProcessStart:1145 : internal error guest failed to start: PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=ecc871cb-58be-4ae4-b216-a8a62b894a7f LIBVIRT_LXC_UUID=ecc871cb-58be-4ae4-b216-a8a62b894a7f LIBVIRT_LXC_NAME=instance-00000077 LIBVIRT_LXC_CMDLINE=console=ttyS0 /sbin/init 2012-11-08 12:48:50.863+0000: 1: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:48:50.863+0000: 1: error : lxcContainerGetSubtree:1199 : Failed to read /proc/mounts: No such file or directory 2012-11-08 12:48:50.863+0000: 31202: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:48:50.863+0000: 31202: error : virLXCControllerRun:1418 : error receiving signal from container: Input/output error 2012-11-08 12:48:50.979+0000: 30698: error : virNetDevSetOnline:536 : Cannot get interface flags on 'veth0': No such device 2012-11-08 12:48:50.984+0000: 30698: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "veth0" not in key map 2012-11-08 12:48:50.986+0000: 30698: error : virNetDevGetIndex:653 : Unable to get index for interface veth0: No such device 2012-11-08 12:48:51.127+0000: 30695: error : virLXCProcessStop:701 : internal error Invalid PID -1 for container 2012-11-08 12:48:51.128+0000: 30695: error : virLXCProcessStop:701 : internal error Invalid PID -1 for container 2012-11-08 12:48:54.709+0000: 30695: error : virNetSocketReadWire:1184 : End of file while reading data: Input/output error 2012-11-08 12:48:54.710+0000: 30695: error : virNetSocketReadWire:1184 : End of file while reading data: Input/output error lxc log -- tail -f lxc/instance-00000077.log 2012-11-08 12:48:50.723+0000: starting up PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin LIBVIRT_DEBUG=3 LIBVIRT_LOG_OUTPUTS=3:stderr /usr/libexec/libvirt_lxc --name instance-00000077 --console 21 --security=none --handshake 24 --background --veth veth1 PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=ecc871cb-58be-4ae4-b216-a8a62b894a7f LIBVIRT_LXC_UUID=ecc871cb-58be-4ae4-b216-a8a62b894a7f LIBVIRT_LXC_NAME=instance-00000077 LIBVIRT_LXC_CMDLINE=console=ttyS0 /sbin/init 2012-11-08 12:48:50.863+0000: 1: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:48:50.863+0000: 1: error : lxcContainerGetSubtree:1199 : Failed to read /proc/mounts: No such file or directory 2012-11-08 12:48:50.863+0000: 31202: info : libvirt version: 0.10.2, package: 1.el6 (Unknown, 2012-11-08-20:20:52, localhost) 2012-11-08 12:48:50.863+0000: 31202: error : virLXCControllerRun:1418 : error receiving signal from container: Input/output error libvirt xml -- <domain type='lxc'> <name>instance-00000077</name> <uuid>ecc871cb-58be-4ae4-b216-a8a62b894a7f</uuid> <memory unit='KiB'>524288</memory> <currentMemory unit='KiB'>524288</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> <cmdline>console=ttyS0</cmdline> </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='/home/stack/nova_state/instances/instance-00000077/rootfs'/> <target dir='/'/> </filesystem> <interface type='bridge'> <mac address='fa:16:3e:40:ec:11'/> <source bridge='br100'/> <filterref filter='nova-instance-instance-00000077-fa163e40ec11'> <parameter name='DHCPSERVER' value='10.48.253.1'/> <parameter name='IP' value='10.48.253.2'/> <parameter name='PROJMASK' value='255.255.255.0'/> <parameter name='PROJNET' value='10.48.253.0'/> </filterref> </interface> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> </domain> cat /proc/mounts -- [root@localhost libvirt]# cat /proc/mounts rootfs / rootfs rw 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 devtmpfs /dev devtmpfs rw,nosuid,relatime,size=32967000k,nr_inodes=8241750,mode=755 0 0 devpts /dev/pts devpts rw,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 /dev/sda2 / ext4 rw,relatime,barrier=1,data=ordered 0 0 /proc/bus/usb /proc/bus/usb usbfs rw,relatime 0 0 /dev/mapper/xenvg-home /home ext4 rw,relatime,barrier=1,data=ordered 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 none /noah/tmp tmpfs rw,relatime,mode=755 0 0 cgroup /cgroup/cpuset cgroup rw,relatime,cpuset 0 0 cgroup /cgroup/cpu cgroup rw,relatime,cpu 0 0 cgroup /cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0 cgroup /cgroup/memory cgroup rw,relatime,memory 0 0 cgroup /cgroup/devices cgroup rw,relatime,devices 0 0 cgroup /cgroup/freezer cgroup rw,relatime,freezer 0 0 cgroup /cgroup/net_cls cgroup rw,relatime,net_cls 0 0 cgroup /cgroup/blk_io cgroup rw,relatime,blkio 0 0 cgroup /cgroup/ns cgroup rw,relatime,ns 0 0 /dev/nbd15 /home/stack/nova_state/instances/instance-00000070/rootfs ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0 /dev/nbd14 /home/stack/nova_state/instances/instance-00000071/rootfs ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0 /dev/nbd13 /home/stack/nova_state/instances/instance-00000073/rootfs ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0 /dev/nbd12 /home/stack/nova_state/instances/instance-00000075/rootfs ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0 /dev/nbd11 /home/stack/nova_state/instances/instance-00000076/rootfs ext3 rw,relatime,errors=continue,barrier=1,data=ordered 0 0 /dev/nbd10 /home/stack/nova_state/instances/instance-00000077/rootfs ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0 -- Qiu Yu

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[libvirt-users] Problems when filtering on icmpv6
by Guido Winkelmann 08 Nov '12

08 Nov '12

Hi, I am trying to prevent my qemu guest machines from sending IPv6 router advertisements over their network device. To that end, I have written this filter definition: <filter name='no-ipv6-router-advertisement' chain='root' priority='-690'> <rule action='drop' direction='out' priority='600'> <icmpv6 type='134'/> </rule> <rule action='drop' direction='out' priority='600'> <icmpv6 type='153'/> </rule> </filter> As soon as I try to use this filter, though, I get the following error (in virsh): error: Error while building firewall: Some rules could not be created for interface vnet0: Failure to execute command '$IPT -A libvirt-out -m physdev -- physdev-out vnet0 -g FP-vnet0' : 'ip6tables: No chain/target/match by that name.'. I am (trying to) use this filter by including it in here: <filter name='clean-traffic-with-v6' chain='root'> <filterref filter='no-mac-spoofing'/> <filterref filter='no-ip-spoofing'/> <filterref filter='no-dhcp-server'/> <rule action='accept' direction='out' priority='-650'> <mac protocolid='ipv4'/> </rule> <filterref filter='allow-incoming-ipv4'/> <filterref filter='no-ipv6-spoofing'/> <filterref filter='no-ipv6-router-advertisement'/> <filterref filter='no-dhcpv6-server'/> <rule action='accept' direction='out' priority='-600'> <mac protocolid='ipv6'/> </rule> <filterref filter='allow-incoming-ipv6'/> <filterref filter='no-arp-spoofing'/> <rule action='accept' direction='inout' priority='-500'> <mac protocolid='arp'/> </rule> <filterref filter='no-other-l2-traffic'/> <filterref filter='qemu-announce-self'/> </filter> Without the line <filterref filter='no-ipv6-router-advertisement'/> this filter works fine. When running a domain with this filter without the no-ipv6-router- advertisement filterref, my ip6tables look like this: # ip6tables-save # Generated by ip6tables-save v1.4.13 on Wed Nov 7 17:46:32 2012 *mangle :PREROUTING ACCEPT [146:12680] :INPUT ACCEPT [103:9704] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [172:14184] :POSTROUTING ACCEPT [172:14184] COMMIT # Completed on Wed Nov 7 17:46:32 2012 # Generated by ip6tables-save v1.4.13 on Wed Nov 7 17:46:32 2012 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :libvirt-host-in - [0:0] :libvirt-in - [0:0] :libvirt-in-post - [0:0] :libvirt-out - [0:0] -A INPUT -j libvirt-host-in -A FORWARD -j libvirt-in -A FORWARD -j libvirt-out -A FORWARD -j libvirt-in-post COMMIT # Completed on Wed Nov 7 17:46:32 2012 This is with libvirt 0.10.2. Does anybody have an idea what is happening here or how I could debug this further? Regards, Guido

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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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[libvirt-users] hotplug
by Douglas Russell 03 Nov '12

03 Nov '12

Another separate thread for a slightly separate issue. For some reason, hotplugging disks does not work for me. I built my guest with ubuntu's vmbuilder. It's Precise, virtual. I have acpiphp in my /etc/modules file: $ lsmod Module Size Used by psmouse 97443 0 serio_raw 13211 0 virtio_balloon 13108 0 acpiphp 24231 0 floppy 70365 0 hotplug_pci seems to be compiled into the kernel: $ grep HOTPLUG_PCI /boot/config-3.2.0-32-virtual CONFIG_HOTPLUG_PCI_PCIE=y CONFIG_HOTPLUG_PCI=y CONFIG_HOTPLUG_PCI_FAKE=m CONFIG_HOTPLUG_PCI_ACPI=m CONFIG_HOTPLUG_PCI_ACPI_IBM=m CONFIG_HOTPLUG_PCI_CPCI=y CONFIG_HOTPLUG_PCI_CPCI_ZT5550=m CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m CONFIG_HOTPLUG_PCI_SHPC=m But when I attach a disk, absolutely nothing happens in the guest. No messages in the logs, no change to /proc/partitions, no new device nodes. When I reboot, the disk appears. Any ideas? Thanks, Douglas

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