Hi, I got the same message and error state following an apt-get upgrade. This is related to the same package 1.2.16-2ubuntu11.15.10.2 When no process libvirtd is running, a /usr/sbin/libvirtd -v start without error. The problem seems to happen because the libvirtd process doesn't stop correctly when the package is upgraded. # ps -ef |grep libvirt root 1535 1 0 10:34 ? 00:00:03 /usr/sbin/libvirtd -l -d # apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] Y Setting up libvirt-bin (1.2.16-2ubuntu11.15.10.3) ... Job for libvirt-bin.service failed because the control process exited with error code. See "systemctl status libvirt-bin.service" and "journalctl -xe" for details. invoke-rc.d: initscript libvirt-bin, action "restart" failed. dpkg: error processing package libvirt-bin (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: libvirt-bin E: Sub-process /usr/bin/dpkg returned an error code (1) # systemctl status libvirt-bin.service ● libvirt-bin.service - Virtualization daemon Loaded: loaded (/lib/systemd/system/libvirt-bin.service; enabled; vendor preset: enabled) Drop-In: /etc/systemd/system/libvirt-bin.service.d └─override.conf Active: failed (Result: start-limit) since Mon 2016-10-10 14:43:54 CEST; 23s ago Docs: man:libvirtd(8) http://libvirt.org Process: 12628 ExecStart=/usr/sbin/libvirtd -l -d (code=exited, status=1/FAILURE) Main PID: 12628 (code=exited, status=1/FAILURE) CGroup: /system.slice/libvirt-bin.service ├─1535 /usr/sbin/libvirtd -l -d ├─3745 qemu-system-x86_64 -enable-kvm -name ipplan -S -machine pc-i440fx-vivid,accel=kvm,usb=off -cpu Westmere -m 2048 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 4878fcdb-44... └─3885 qemu-system-x86_64 -enable-kvm -name gitlab -S -machine pc-i440fx-vivid,accel=kvm,usb=off -cpu Westmere -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid d789bd49-fd... Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:54 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Start request repeated too quickly. Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'start-limit'. # journalctl -xe Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. -- Subject: Unit libvirt-bin.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit libvirt-bin.service has failed. -- -- The result is failed. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:54 uytrtst99 systemd[1]: Stopped Virtualization daemon. -- Subject: Unit libvirt-bin.service has finished shutting down -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit libvirt-bin.service has finished shutting down. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Start request repeated too quickly. Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. -- Subject: Unit libvirt-bin.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit libvirt-bin.service has failed. -- -- The result is failed. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'start-limit'. When tryingto stop libvirtd # service libvirt-bin stop # ps -ef |grep libvirt root 1535 1 0 10:34 ? 00:00:03 /usr/sbin/libvirtd -l -d Still there ! During upgrade, the service is reloaded several times (in syslog) : Oct 10 14:43:53 uytrtst99 systemd[1]: Reloading. Oct 10 14:43:53 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: Starting Virtualization daemon... Oct 10 14:43:53 uytrtst99 libvirtd[12609]: libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12609]: OBJECT_NEW: obj=0x564c6070c1d0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12609]: OBJECT_NEW: obj=0x564c6070c2b0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12609]: OBJECT_REF: obj=0x564c6070c1d0 Oct 10 14:43:53 uytrtst99 libvirtd[12609]: OBJECT_UNREF: obj=0x564c6070c1d0 Oct 10 14:43:53 uytrtst99 libvirtd[12611]: Failed to acquire pid file '/var/run/libvirtd.pid': Resource temporarily unavailable Oct 10 14:43:53 uytrtst99 libvirtd[12611]: stopping all netlink event services Oct 10 14:43:53 uytrtst99 libvirtd[12609]: 2016-10-10 12:43:53.552+0000: 12609: info : libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12609]: 2016-10-10 12:43:53.552+0000: 12609: debug : virLogParseOutputs:1091 : outputs=2:journald Oct 10 14:43:53 uytrtst99 libvirtd[12609]: /usr/sbin/libvirtd: error: Unable to obtain pidfile. Check /var/log/messages or run without --daemon for more info. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:53 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:53 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: Starting Virtualization daemon... Oct 10 14:43:53 uytrtst99 libvirtd[12618]: libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12618]: OBJECT_NEW: obj=0x560cbb28c1d0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12618]: OBJECT_NEW: obj=0x560cbb28c2b0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12618]: OBJECT_REF: obj=0x560cbb28c1d0 Oct 10 14:43:53 uytrtst99 libvirtd[12618]: OBJECT_UNREF: obj=0x560cbb28c1d0 Oct 10 14:43:53 uytrtst99 libvirtd[12618]: 2016-10-10 12:43:53.712+0000: 12618: info : libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12618]: 2016-10-10 12:43:53.712+0000: 12618: debug : virLogParseOutputs:1091 : outputs=2:journald Oct 10 14:43:53 uytrtst99 libvirtd[12620]: Failed to acquire pid file '/var/run/libvirtd.pid': Resource temporarily unavailable Oct 10 14:43:53 uytrtst99 libvirtd[12620]: stopping all netlink event services Oct 10 14:43:53 uytrtst99 libvirtd[12618]: /usr/sbin/libvirtd: error: Unable to obtain pidfile. Check /var/log/messages or run without --daemon for more info. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:53 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:53 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: Starting Virtualization daemon... Oct 10 14:43:53 uytrtst99 libvirtd[12622]: libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12622]: OBJECT_NEW: obj=0x5578760981d0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12622]: OBJECT_NEW: obj=0x5578760982b0 classname=virAccessManagerClass Oct 10 14:43:53 uytrtst99 libvirtd[12622]: OBJECT_REF: obj=0x5578760981d0 Oct 10 14:43:53 uytrtst99 libvirtd[12622]: OBJECT_UNREF: obj=0x5578760981d0 Oct 10 14:43:53 uytrtst99 libvirtd[12624]: Failed to acquire pid file '/var/run/libvirtd.pid': Resource temporarily unavailable Oct 10 14:43:53 uytrtst99 libvirtd[12624]: stopping all netlink event services Oct 10 14:43:53 uytrtst99 libvirtd[12622]: 2016-10-10 12:43:53.963+0000: 12622: info : libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:53 uytrtst99 libvirtd[12622]: 2016-10-10 12:43:53.963+0000: 12622: debug : virLogParseOutputs:1091 : outputs=2:journald Oct 10 14:43:53 uytrtst99 libvirtd[12622]: /usr/sbin/libvirtd: error: Unable to obtain pidfile. Check /var/log/messages or run without --daemon for more info. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:53 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:53 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:54 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: Starting Virtualization daemon... Oct 10 14:43:54 uytrtst99 libvirtd[12625]: libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:54 uytrtst99 libvirtd[12625]: OBJECT_NEW: obj=0x56480b1481d0 classname=virAccessManagerClass Oct 10 14:43:54 uytrtst99 libvirtd[12625]: OBJECT_NEW: obj=0x56480b1482b0 classname=virAccessManagerClass Oct 10 14:43:54 uytrtst99 libvirtd[12625]: OBJECT_REF: obj=0x56480b1481d0 Oct 10 14:43:54 uytrtst99 libvirtd[12625]: OBJECT_UNREF: obj=0x56480b1481d0 Oct 10 14:43:54 uytrtst99 libvirtd[12627]: Failed to acquire pid file '/var/run/libvirtd.pid': Resource temporarily unavailable Oct 10 14:43:54 uytrtst99 libvirtd[12627]: stopping all netlink event services Oct 10 14:43:54 uytrtst99 libvirtd[12625]: 2016-10-10 12:43:54.214+0000: 12625: info : libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:54 uytrtst99 libvirtd[12625]: 2016-10-10 12:43:54.214+0000: 12625: debug : virLogParseOutputs:1091 : outputs=2:journald Oct 10 14:43:54 uytrtst99 libvirtd[12625]: /usr/sbin/libvirtd: error: Unable to obtain pidfile. Check /var/log/messages or run without --daemon for more info. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:54 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: Starting Virtualization daemon... Oct 10 14:43:54 uytrtst99 libvirtd[12628]: libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:54 uytrtst99 libvirtd[12628]: OBJECT_NEW: obj=0x55ead2d5f1d0 classname=virAccessManagerClass Oct 10 14:43:54 uytrtst99 libvirtd[12628]: OBJECT_NEW: obj=0x55ead2d5f2b0 classname=virAccessManagerClass Oct 10 14:43:54 uytrtst99 libvirtd[12628]: OBJECT_REF: obj=0x55ead2d5f1d0 Oct 10 14:43:54 uytrtst99 libvirtd[12628]: OBJECT_UNREF: obj=0x55ead2d5f1d0 Oct 10 14:43:54 uytrtst99 libvirtd[12630]: Failed to acquire pid file '/var/run/libvirtd.pid': Resource temporarily unavailable Oct 10 14:43:54 uytrtst99 libvirtd[12630]: stopping all netlink event services Oct 10 14:43:54 uytrtst99 libvirtd[12628]: 2016-10-10 12:43:54.464+0000: 12628: info : libvirt version: 1.2.16, package: 1.2.16-2ubuntu11.15.10.3 Oct 10 14:43:54 uytrtst99 libvirtd[12628]: 2016-10-10 12:43:54.464+0000: 12628: debug : virLogParseOutputs:1091 : outputs=2:journald Oct 10 14:43:54 uytrtst99 libvirtd[12628]: /usr/sbin/libvirtd: error: Unable to obtain pidfile. Check /var/log/messages or run without --daemon for more info. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=1/FAILURE Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'exit-code'. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart. Oct 10 14:43:54 uytrtst99 systemd[1]: Stopped Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Start request repeated too quickly. Oct 10 14:43:54 uytrtst99 systemd[1]: Failed to start Virtualization daemon. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Unit entered failed state. Oct 10 14:43:54 uytrtst99 systemd[1]: libvirt-bin.service: Failed with result 'start-limit'. So, the restart fails. I don't get the locale thing describes in previous post. My issue is more related to libvirtd stop attempt which not stops the process and failed when apt-get wants to restart it again... Regards, Guillaume. PS: my locales : # locale LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL=