Based on the logs I don't think this is a nova bug. I suggest to contact the libvirt developers at https://libvirt.org/bugs.html
I'm setting this as Invalid if further investigation on the libvirt side indicates that somehow nova causes the libvirt segfault then feel free to set this bugreport back to New. ** Changed in: nova Status: New => Invalid -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1889213 Title: libvirt: live-migration crash with segfault while transfering memstate Status in OpenStack Compute (nova): Invalid Bug description: Description =========== Using recent Ubuntu Stein Cloud Packages, we are observing random live-migration crashes on the target host. Libvirt is having a SEGFAULT on the qemu driver. Transferring block devices usually works without issues. However, the following memory transfer is causing the target libvirtd randomly to close down its socket, resulting in a roll-backed migration process. Libvirt log on target host before the crash is attached. Steps to reproduce ================== - Start a live-migration with block mode between 2 identical hosts. - Wait until transfer of blockdisks is done - During memory transfer, target host libvirt crashes. Expected result =============== Live-Migration completes onto the new host as intended. Actual result ============= Target host libvirtd crashes with SEGFAULT, causing a rollback of the migration. Environment =========== Ubuntu 18.04.4 LTS (GNU/Linux 4.15.0-99-generic x86_64) OpenStack Stein (Ubuntu Cloud Archive) Libvirt+QEMU_x86 keystone-common 2:15.0.1-0ubuntu1~cloud0 libvirt-daemon 5.0.0-1ubuntu2.6~cloud0 qemu-system-x86 1:3.1+dfsg-2ubuntu3.7~cloud0 neutron-linuxbridge-agent 2:14.2.0-0ubuntu1~cloud0 neutron-plugin-ml2 2:14.2.0-0ubuntu1~cloud0 nova-compute 2:19.2.0-0ubuntu1~cloud0 nova-compute-libvirt 2:19.2.0-0ubuntu1~cloud0 python-rbd 14.2.10-1bionic python3-cinderclient 1:4.1.0-0ubuntu1~cloud0 python3-designateclient 2.9.0-0ubuntu1 python3-glanceclient 1:2.16.0-0ubuntu1~cloud0 python3-neutronclient 1:6.11.0-0ubuntu1~cloud0 python3-novaclient 2:13.0.0-0ubuntu1~cloud0 To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1889213/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp