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[libvirt-users] Unable to start LXC on Gentoo w/ libvirt 1.0.4 or 1.0.5. 1.0.3 works
by Dennis Jenkins 14 May '13

14 May '13

Hello. I use libvirtd on my Gentoo development system to manage both QEMU and LXC. When 1.0.3 came out, I updated to it from 1.0.3-r2, but 1.0.4 failed to start my LXC containers. I did not research the issue at the time, so I revert to 1.0.3-r2. Today I updated to 1.0.5 and my LXC containers still fail to start. I have not changed my domain XML at all. I am looking for suggestions on what to try to resolve the problem. Maybe I'm missing a package or have something mus-configured for libvirt-1.0.5. btw, A month ago I updates to the most recent "udev" (udev-200). This required me to rename all of my network interfaces. My QEMU and LXC containers continued to work. All of my VMs use bridged networking on "br0" or "br1". Those virtual interfaces are not bridged to any physical NIC. They exist only inside my host's kernel. I have extensive iptables rules to filter traffic between my network segments (physical + virtual). TL;DR: this was burried in a log file: " error : lxcContainerMountFSDevPTS:808 : Failed to mount /.oldroot//var/run/libvirt/lxc/dwj-lnx-dev.devpts on /dev/pts: No such file or directory". But that directory DOES exist in the container: ostara ~ # ls -ld /vm/lxc/dwj-lnx-dev/dev/pts/ drwxr-xr-x 2 root root 4096 Apr 27 2011 /vm/lxc/dwj-lnx-dev/dev/pts/ If I revert to libvirt-1.0.3-r2, I can boot my LXC containers again. But if possible, I'd like to keep my system current. I've ran the usual Gentoo tools to verify that all package dependencies are installed, revdep-rebuild reports that all ELFs link against the proper shared objects. ostara ~ # virsh --version 1.0.5 ostara ~ # equery l libvirt * Searching for libvirt ... [IP-] [ ] app-emulation/libvirt-1.0.5:0 ostara ~ # equery -q u libvirt | xargs echo -audit -avahi +caps -firewalld -fuse -iscsi +libvirtd +lvm +lxc +macvtap +nfs +nls -numa -openvz -parted +pcap -phyp -policykit -python +qemu -rbd +sasl +udev +uml +vepa +virt-network -virtualbox -xen 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 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 error receiving signal from container: Input/output error ostara ~ # tail -n 10 /var/log/libvirt/libvirtd.log 2013-05-14 13:03:47.549+0000: 22352: info : libvirt version: 1.0.5 2013-05-14 13:03:47.549+0000: 22352: error : virDBusGetSystemBus:86 : internal error Unable to get DBus system bus connection: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory 2013-05-14 13:03:47.549+0000: 22352: warning : ebiptablesDriverInitCLITools:4233 : Could not find 'ip6tables' executable 2013-05-14 13:04:21.629+0000: 22341: error : virNetSocketReadWire:1362 : Cannot recv data: Connection reset by peer 2013-05-14 13:04:21.729+0000: 22345: error : virLXCProcessStart:1285 : 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 error receiving signal from container: Input/output error 2013-05-14 13:04:21.731+0000: 22345: error : virNetDevSetOnline:544 : Cannot get interface flags on 'veth0': No such device 2013-05-14 13:04:21.778+0000: 22345: error : virCommandWait:2353 : internal error Child process (ip link del veth0) unexpected exit status 1: Cannot find device "veth0" 2013-05-14 13:04:21.917+0000: 22345: error : virCommandWait:2353 : internal error Child process (ip link del veth1) unexpected exit status 1: Cannot find device "veth1" ostara ~ # tail -n 10 /var/log/libvirt/lxc/dwj-lnx-dev.log 2013-05-14 13:04:20.894+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 22 --security=none --handshake 25 --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 2013-05-14 13:04:21.562+0000: 1: info : libvirt version: 1.0.5 2013-05-14 13:04:21.562+0000: 1: error : lxcContainerMountFSDevPTS:808 : Failed to mount /.oldroot//var/run/libvirt/lxc/dwj-lnx-dev.devpts on /dev/pts: No such file or directory 2013-05-14 13:04:21.562+0000: 22562: info : libvirt version: 1.0.5 2013-05-14 13:04:21.562+0000: 22562: error : virLXCControllerRun:1481 : error receiving signal from container: Input/output error error receiving signal from container: Input/output error 2013-05-14 13:04:21.628+0000: 22562: error : virCommandWait:2353 : internal error Child process (ip link del veth1) unexpected exit status 1: Cannot find device "veth1" 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> <resource> <partition>/machine</partition> </resource> <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 ~ # ifconfig -a | egrep -v "(RX|TX) (packets|errors)" br0: flags=4355<UP,BROADCAST,PROMISC,MULTICAST> mtu 1500 inet 192.168.2.1 netmask 255.255.255.0 broadcast 192.168.2.255 ether 00:00:00:00:00:00 txqueuelen 0 (Ethernet) br1: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 inet 192.168.3.1 netmask 255.255.255.0 broadcast 192.168.3.255 ether 06:9b:23:fb:14:5f txqueuelen 0 (Ethernet) enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255 ether bc:ae:c5:16:6f:3b txqueuelen 1000 (Ethernet) device interrupt 18 memory 0xfade0000-fae00000 enp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xx.xx.xx.xx netmask 255.255.252.0 broadcast xx.xx.xx.xx ether bc:ae:c5:16:70:3f txqueuelen 1000 (Ethernet) device interrupt 19 memory 0xfaee0000-faf00000 enp6s2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.4.1 netmask 255.255.255.0 broadcast 192.168.4.255 ether 00:03:6d:14:78:30 txqueuelen 1000 (Ethernet) lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 loop txqueuelen 0 (Local Loopback) virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 ether c2:ff:56:b7:a7:cd txqueuelen 0 (Ethernet)

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[libvirt-users] libvirt support for armv8
by prakash b 14 May '13

14 May '13

Is libvirt supports armv8 arch? Thanks, Prakash B

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[libvirt-users] Libvirt 1.0.5 with Openvswitch 1.11.90: unable to add bridge br0 port vnet0 operation not supported
by Christopher Paggen (cpaggen) 13 May '13

13 May '13

Howdy, Running the most recent OVS and libvirt I'm running into the following error message with virt-install: root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> ovs-vsctl -V ovs-vsctl (Open vSwitch) 1.11.90 Compiled May 6 2013 22:37:22 root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> virt-install --connect qemu:///system --name DSL2 --ram 1024 --vcpus 1 --disk path=/tmp/dsl2,size=1,bus=virtio,cache=none --network=bridge:br0 --vnc --os-type=linux --cdrom /dev/sr0 Starting install... ERROR Unable to add bridge br0 port vnet0: Operation not supported Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start DSL2 otherwise, please restart your installation. root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> ovs-vsctl del-port br0 vnet0 root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> libvirtd --version libvirtd (libvirt) 1.0.5 root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> virsh --version 1.0.5 root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> virt-install --connect qemu:///system --name DSL2 --ram 1024 --vcpus 1 --disk path=/tmp/dsl2,size=1,bus=virtio,cache=none --network=bridge:br0 --vnc --os-type=linux --cdrom /dev/sr0 Starting install... ERROR Unable to add bridge br0 port vnet0: Operation not supported Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start DSL2 otherwise, please restart your installation. root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> ovs-vsctl show b81788a2-f45d-4fad-aad2-f423e6e70bad Bridge "br0" Port "eth1" Interface "eth1" Port "br0" Interface "br0" type: internal Port "tap0" Interface "tap0" root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5> Even if I create a new OVS switch I get the same result: root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> ovs-vsctl add-br b1 root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> virt-install --connect qemu:///system --name DSL2 --ram 1024 --vcpus 1 --disk path=/tmp/dsl2,size=1,bus=virtio,cache=none --network=bridge:b1 --vnc --os-type=linux --cdrom /dev/sr0 Starting install... ERROR Unable to add bridge b1 port vnet0: Operation not supported Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start DSL2 otherwise, please restart your installation. root@qemu-kvm:~/libvirt-1.0.5#<mailto:root@qemu-kvm:~/libvirt-1.0.5#> Nothing in the openvswitch log file (OVS itself works fine, I can start VMs with the kvm command line). Any clues? I'm not too sure how to trace libvirt calls to OVS (according to the release notes, versions 1.0+ of libvirtd should work with OVS. Note: I am not using brcompat, I believe it's obsolete in the OVS version I'm running). Thanks, Chris.

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[libvirt-users] Check Swap Usage on Guest VM from Host
by Nehal J. Wani 13 May '13

13 May '13

I was wondering if swap usage of Guest VM can be checked from Host machine via command line.Is it possible? -- Nehal J. Wani UG2, BTech CS+MS(CL) IIIT-Hyderabad http://commanlinewani.blogspot.com

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[libvirt-users] Way for a VM to reboot from a snapshot?
by Ken Coar 10 May '13

10 May '13

Using the koan command, a VM can essentially request that it be reprovisioned. Is there any way for a VM to request that it reboot from a snapshot taken with virsh? Thanks.. -- #ken B-)} Ken Coar, RHCE, RHCSA, Sanagendamgagwedweinini IT Engineering Tower, Red Hat/RDU "Millennium hand and shrimp!"

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[libvirt-users] latency between LIFECYCLE event and notification generation
by nishant burte 10 May '13

10 May '13

Hi, I have registered for LIFECYCLE events of libvirt. But I don't know, 1. about the the latency of these events happening and notification generation. e.g. suppose a VM goes down. How much time it takes to realize that the particular VM has gone down(going to say, DEFINED state) and then notification is generated? 2. Second question is, can someone please explain what are the sequence of steps happen between a VM going down and the notification is generated? Coul you please answer both the queries? Thanks Nishant

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[libvirt-users] libvirt daemon and numad daemon
by Gao Yongwei 09 May '13

09 May '13

Hello all, I installed libvirt-0.10.2-18.el6.x86_64 ,is there any relationship between libvirtd and numad ? I found that when I started numad daemon , the vm can start in a shorter time, but when numad daemon stoped , vm could still start ,just with a longer start time. how does this work with the two daemons? thanks.

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[libvirt-users] unable to do kerberos authentication
by Parker Schmitt 08 May '13

08 May '13

Hello, I am trying to do kerberos (sasl+gssapi) authentication for a hypervisor running libvirt. When I have valid kerberos credentials these errors end up in my logs. I have no idea what this all means. More info is in my bug report https://bugzilla.redhat.com/show_bug.cgi?id=958589 Thank you for your help. 2013-05-08 16:25:30.564+0000: 28934: error : virNetSASLSessionServerStart:533 : authentication failed: Failed to start SASL negotiation: -13 (SASL(-13): authentication failure: GSSAPI Failure: gss_accept_sec_context) 2013-05-08 16:25:30.564+0000: 28934: debug : remoteDispatchAuthSaslStart:2636 : RPC_SERVER_CLIENT_AUTH_FAIL: client=0x716391d0b0 auth=1 2013-05-08 16:25:30.564+0000: 28934: debug : virObjectUnref:258 : OBJECT_UNREF: obj=0x337e4000ba0 2013-05-08 16:25:30.564+0000: 28934: debug : virObjectUnref:260 : OBJECT_DISPOSE: obj=0x337e4000ba0 2013-05-08 16:25:30.564+0000: 28934: error : remoteDispatchAuthSaslStart:2651 : authentication failed: authentication failed 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerProgramSendError:151 : prog=536903814 ver=1 proc=68 type=1 serial=2 msg=0x716391e480 rerr=0x337f90d9c20 2013-05-08 16:25:30.564+0000: 28934: debug : virNetMessageEncodePayload:364 : Encode length as 180 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientSendMessageLocked:1287 : msg=0x716391e480 proc=68 len=180 offset=0 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientSendMessageLocked:1295 : RPC_SERVER_CLIENT_MSG_TX_QUEUE: client=0x716391d0b0 len=180 prog=536903814 vers=1 proc=68 type=1 status=1 serial=2 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientCalculateHandleMode:148 : tls=(nil) hs=-1, rx=0x71639257d0 tx=0x716391e480 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientCalculateHandleMode:183 : mode=3 2013-05-08 16:25:30.564+0000: 28934: debug : virEventPollUpdateHandle:147 : EVENT_POLL_UPDATE_HANDLE: watch=9 events=3 2013-05-08 16:25:30.564+0000: 28934: debug : virEventPollInterruptLocked:716 : Interrupting

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[libvirt-users] migration job: unexpectedly failed
by Daniele 08 May '13

08 May '13

Hi, I am trying to run some test and analysis while performing a wide live migration of a VM between two different network location. I use libvirt and qemu-kvm as hypervisor on Linux. The live wide migration from A to B completes successfully, instead I can't achieve the reverse path, from B to A (and that is right what I am interested to). To perform the migration I run this command in virsh: *"migrate --live --verbose uno qemu+ssh://root@ip.address/system"* * * Even if dramatically slow (i guess due to some network bottleneck) the migration starts correctly, but it gets stuck at 96% and after some minute it returns this error: *"Migration: [ 96 %]error: operation failed: migration job: unexpectedly failed" *without further details. The libvirtd.log file in the source host says: *2013-05-07 11:01:18.739+0000: 9538: error : qemuMigrationUpdateJobStatus:945 : operation failed: migration job: unexpectedly failed* * * Apparently i can't find any clue of what is causing the error, do you have any idea/solution? * * (I'm not sure if this is the appropriate mailing-list, maybe it was better the devs list?) Thanks for your help Daniele

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[libvirt-users] Java client error on Windows 7 64 bit for Libvirt on KVM
by george john 07 May '13

07 May '13

Hi, I need some help in building a Java client on Windows 7 64 bit plaftorm to manage a KVM using the libvirt APIs. Using the instructions at http://libvirt.org/java.html, i was able to build libvirt.jar. My understanding is that libvirt.jar uses JNA to call libvirt's native windows library. I tried using the libvirt dlls in the experimental Windows installation package mentioned in http://libvirt.org/windows.html at http://libvirt.org/sources/win32_experimental/Libvirt-0.8.8-0.exe but whenever I try to connect to my remote API, I get the below Java exception : Exception in thread "main" java.lang.UnsatisfiedLinkError: %1 is not a valid Win32 application. at com.sun.jna.Native.open(Native Method) at com.sun.jna.Native.open(Native.java:1718) at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:210) at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:322) at com.sun.jna.Library$Handler.<init>(Library.java:142) at com.sun.jna.Native.loadLibrary(Native.java:387) at com.sun.jna.Native.loadLibrary(Native.java:366) at org.libvirt.jna.Libvirt.<clinit>(Unknown Source) at org.libvirt.Library.<clinit>(Unknown Source) at org.libvirt.Connect.<init>(Unknown Source) at Main.main(Main.java:8) But when I try the same client code on a Windows XP 32 bit machine (with 32 bit JVM), I don't see this problem and the connection succeeds. So it looks like the problem is that I am not using 64 bit windows libvirt dlls. Is my assumption correct? Is there a Windows installer with 64 bit Libvirt dlls ? Or are the 64 bit version of DLLs published somewhere? I tried using Matthias Bolte's msys_setup script (I tried in 2 machines) and in both machines, I get the below error when I try to run compile_libxml2.sh as per instructions https://github.com/photron/msys_setup/blob/master/readme_libvirt.txt Last few lines before the error is : >>>>>>>>>>>>>>>>> make[5]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python' make[4]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python' Making install in tests make[4]: Entering directory `/src/libxml2/libxml2-2.9.0-0/python/tests' make[5]: Entering directory `/src/libxml2/libxml2-2.9.0-0/python/tests' make[5]: Nothing to be done for `install-exec-am'. test -z "/share/doc/libxml2-python-2.9.0/examples" || /bin/mkdir -p "/share/doc/ libxml2-python-2.9.0/examples" /bin/install -c -m 644 build.py attribs.py tst.py tstxpath.py xpathext.py push. py pushSAX.py pushSAXhtml.py error.py serialize.py validate.py tstURI.py cutnpas te.py xpathret.py xpath.py outbuf.py inbuf.py resolver.py regexp.py reader.py re ader2.py reader3.py reader4.py reader5.py reader6.py reader7.py reader8.py reade rnext.py walker.py nsdel.py ctxterror.py readererr.py relaxng.py schema.py threa d2.py sync.py tstLastError.py indexes.py dtdvalid.py tstmem.py '/share/doc/libxm l2-python-2.9.0/examples' /bin/install -c -m 644 validDTD.py validSchemas.py validRNG.py compareNodes.py xpathns.py xpathleak.py tst.xml valid.xml invalid.xml test.dtd '/share/doc/libxm l2-python-2.9.0/examples' make[5]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python/tests' make[4]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python/tests' make[3]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python' make[2]: Leaving directory `/src/libxml2/libxml2-2.9.0-0/python' make[1]: Leaving directory `/src/libxml2/libxml2-2.9.0-0' + cp /python/Lib/site-packages/libxml2mod.dll /python/DLLs/libxml2mod.pyd cp: cannot stat `/python/Lib/site-packages/libxml2mod.dll': No such file or dire ctory >>>>>>>>>>>>>>>>>> Do you know how this error could be resolved? All help will be greatly appreciated. Thank you.

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