You have been subscribed to a public bug by Dariusz Gadomski (dgadomski): [Environment]
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial [Impact] There is a bug/race condition on libvirt-guests.service, that prevents the shutdown of guests to happen in parallel. The critical chain for this service is: libvirt-guests.service +20ms └─libvirt-bin.service @2.784s +140ms └─remote-fs.target @2.777s └─remote-fs-pre.target @2.775s └─open-iscsi.service @2.554s +116ms └─iscsid.service @2.525s +18ms └─network-online.target @2.502s └─network.target @1.955s └─networking.service @1.625s +299ms └─network-pre.target @1.601s └─cloud-init-local.service @405ms +1.072s └─systemd-remount-fs.service @232ms +64ms └─systemd-journald.socket @178ms └─-.slice @117ms As an example, I have the following kvm host with 42 virtual machines. ubuntu@xenial-base:~$ virsh list --all Id Name State ---------------------------------------------------- 12 locked-trusty-2 running 13 locked-trusty-3 running [...] 41 locked-trusty-42 running After rebooting the machine: [ 250.999516] libvirt-guests.sh[4215]: Running guests on default URI: locked-trusty-2, locked-trusty-4, locked-trusty-12, locked-trusty-3, locked-trusty-5, locked-trusty-11, locked-trusty-10, locked-trusty-8, locked-trusty-9, locked-trusty-7, locked-trusty-6, locked-trusty-13, locked-trusty-14, locked-trusty-15, locked-trusty-16, locked-trusty-17, locked-trusty-18, locked-trusty-19, locked-trusty-20, locked-trusty-21, locked-trusty-22, locked-trusty-23, locked-trusty-24, locked-trusty-25, locked-trusty-26, locked-trusty-27, locked-trusty-28, locked-trusty-29, locked-trusty-30, locked-trusty-31, locked-trusty-32, locked-trusty-33, locked-trusty-34, locked-trusty-35, locked-trusty-36, locked-trusty-37, locked-trusty-38, locked-trusty-39, locked-trusty-40, locked-trusty-41, locked-trusty-42 [ 251.011367] libvirt-guests.sh[4215]: Shutting down guests on default URI... [ 251.027072] libvirt-guests.sh[4215]: Starting shutdown on guest: locked-trusty-2 [...] [ 391.949941] libvirt-guests.sh[4215]: Waiting for 28 guests to shut down, 10 seconds left [ 398.074405] libvirt-guests.sh[4215]: Waiting for 28 guests to shut down, 5 seconds left [ 403.020479] libvirt-guests.sh[4215]: Timeout expired while shutting down domains [ OK ] Stopped Suspend Active Libvirt Guests. [ OK ] Stopped target System Time Synchronized. [Test Case] * Make sure the following variables are set in /etc/default/libvirt- guests (which are all default options): ON_SHUTDOWN=shutdown PARALLEL_SHUTDOWN=10 SHUTDOWN_TIMEOUT=120 * Create over 20 virtual machines (in my case, using uvt-kvm). $ for f in $(seq 0 40); do uvt-kvm create --memory 2000 --cpu 1 locked- trusty-$f release=xenial arch=amd64 ; done * Reboot the machine and monitor the systemd service stop sequence or console output. (With systemd: systemctl start debug-shell and jumpt to ctrl+alt+f9) * Error message "Timeout expired while shutting down domains" should be displayed. [Regression Potential] * None identified. [Other Info] * There is a proposed patch in upstream already that has been already linked to this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1450141 ** Affects: libvirt Importance: Undecided Status: Fix Released ** Affects: libvirt (Ubuntu) Importance: Medium Assignee: ChristianEhrhardt (paelzer) Status: Fix Released ** Affects: libvirt (Ubuntu Xenial) Importance: Medium Assignee: Jorge Niedbalski (niedbalski) Status: In Progress ** Affects: libvirt (Ubuntu Zesty) Importance: Medium Assignee: Jorge Niedbalski (niedbalski) Status: Won't Fix ** Affects: libvirt (Ubuntu Artful) Importance: Medium Assignee: Jorge Niedbalski (niedbalski) Status: In Progress ** Tags: need-upstream-report patch -- libvirt-guests.sh fails to shutdown guests in parallel https://bugs.launchpad.net/bugs/1688508 You received this bug notification because you are a member of STS Sponsors, which is subscribed to the bug report. -- Mailing list: https://launchpad.net/~sts-sponsors Post to : [email protected] Unsubscribe : https://launchpad.net/~sts-sponsors More help : https://help.launchpad.net/ListHelp
