[libvirt-users] Libvirt newer than 2.1.0 doesnt start up
Hi all, I have some problems with libvirt >2.1.0 (so 2.2.0 and 2.3.0): I have a working environment using libvirt 2.1.0 with 1 domain (called "mail") and one network (called "default6"), both are autostarted. I have no problems with this environment using libvirt 2.1.0, everything works great. But after (testwise) updating to libvirt 2.2.0 or 2.3.0, libvirt doesn't start up anymore. Some investigations showed that apparently my "default6" network is the problem. Libvirt is starting correctly after disabling all autostarts. When I then virsh' into the system daemon and type "net-start default6", then nothing happens and that command just hangs infinitely. Further information, relevant log entries and e.g. the used default6.xml configuration file can be found here, as I first thought it would be a configuration error from my side: https://bbs.archlinux.org/viewtopic.php?pid=1653221 Do you maybe have an idea what could be going on? Or do you maybe need more information, and if yes, which exactly? Thanks in advance Regards Rene
On 10/17/2016 10:32 AM, Rene Pasing wrote:
Hi all,
I have some problems with libvirt >2.1.0 (so 2.2.0 and 2.3.0): I have a working environment using libvirt 2.1.0 with 1 domain (called "mail") and one network (called "default6"), both are autostarted. I have no problems with this environment using libvirt 2.1.0, everything works great.
But after (testwise) updating to libvirt 2.2.0 or 2.3.0, libvirt doesn't start up anymore.
Some investigations showed that apparently my "default6" network is the problem. Libvirt is starting correctly after disabling all autostarts. When I then virsh' into the system daemon and type "net-start default6", then nothing happens and that command just hangs infinitely.
Further information, relevant log entries and e.g. the used default6.xml configuration file can be found here, as I first thought it would be a configuration error from my side: https://bbs.archlinux.org/viewtopic.php?pid=1653221
Do you maybe have an idea what could be going on? Or do you maybe need more information, and if yes, which exactly?
Nothing seems unusual about your config, and your troubleshooting so far eliminates some common problems. I've just tried starting an IPv6 network with a libvirtd built from the latest sources (but on Fedora 24) and don't experience your problem. I guess at this point what's most likely to get closer to the root of the problem would be to attach gdb to the hung libvirtd process and run "thread apply all bt". Presumably one of the threads will be waiting on a system call to return and that may give a further clue.
On 17.10.2016 22:32, Rene Pasing wrote:
Hi all,
I have some problems with libvirt >2.1.0 (so 2.2.0 and 2.3.0): I have a working environment using libvirt 2.1.0 with 1 domain (called "mail") and one network (called "default6"), both are autostarted. I have no problems with this environment using libvirt 2.1.0, everything works great.
But after (testwise) updating to libvirt 2.2.0 or 2.3.0, libvirt doesn't start up anymore.
Some investigations showed that apparently my "default6" network is the problem. Libvirt is starting correctly after disabling all autostarts. When I then virsh' into the system daemon and type "net-start default6", then nothing happens and that command just hangs infinitely.
Further information, relevant log entries and e.g. the used default6.xml configuration file can be found here, as I first thought it would be a configuration error from my side: https://bbs.archlinux.org/viewtopic.php?pid=1653221
Do you maybe have an idea what could be going on? Or do you maybe need more information, and if yes, which exactly?
Those "Network is already in use by interface virbr1" error messages worry me. Is the bridge active before you start libvirtd? If so we might be losing netowrk state XML (or fail to parse it) and thus think network is not started and because of autostart we try to start it again (which fails). Also, can you please share debug logs (apart from what Laine already requested) http://wiki.libvirt.org/page/DebugLogs Before you start libvirt, are there any files under /var/run/libvirt/network/ ? If so, what's their content? Michal
On 10/19/2016 01:58 AM, Michal Privoznik wrote:
On 17.10.2016 22:32, Rene Pasing wrote:
Hi all,
I have some problems with libvirt >2.1.0 (so 2.2.0 and 2.3.0): I have a working environment using libvirt 2.1.0 with 1 domain (called "mail") and one network (called "default6"), both are autostarted. I have no problems with this environment using libvirt 2.1.0, everything works great.
But after (testwise) updating to libvirt 2.2.0 or 2.3.0, libvirt doesn't start up anymore.
Some investigations showed that apparently my "default6" network is the problem. Libvirt is starting correctly after disabling all autostarts. When I then virsh' into the system daemon and type "net-start default6", then nothing happens and that command just hangs infinitely.
Further information, relevant log entries and e.g. the used default6.xml configuration file can be found here, as I first thought it would be a configuration error from my side: https://bbs.archlinux.org/viewtopic.php?pid=1653221
Do you maybe have an idea what could be going on? Or do you maybe need more information, and if yes, which exactly? Those "Network is already in use by interface virbr1" error messages worry me. Is the bridge active before you start libvirtd? If so we might be losing netowrk state XML (or fail to parse it) and thus think network is not started and because of autostart we try to start it again (which fails).
My suspicion was that error happens during a 2nd attempt to start the network when libvirtd has already hung once while trying to start the network, and was killed, thus preventing proper cleanup of a half-started network.
participants (3)
-
Laine Stump -
Michal Privoznik -
Rene Pasing