Public bug reported: I've deployed multinode devstack environment and tried to live-migrate volume-backed instance, live-migration fails during copying of glance image to destination. When it happens nova leaves destination host in inconsistent state, and attempt to run live-migration again fails. Here is small investigation of a problem: nova creates instance directory on target compute node: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6152 in second run it fail here, because dest node wasn't properly cleanedup: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6148
Also it's really strange, that when pre_live_migration on dest node fails, flow returns to source which decide is that really required to clean_up destination or not. It will be more clearer to wrap pre_live_migration with try/catch and rollback it before response to source node: https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L4962-L4984 ** Affects: nova Importance: Undecided Assignee: Timofey Durakov (tdurakov) Status: New ** Tags: live-migration ** Changed in: nova Assignee: (unassigned) => Timofey Durakov (tdurakov) -- 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/1488435 Title: Resources on destination node doesn't cleanup if live-migration fails Status in OpenStack Compute (nova): New Bug description: I've deployed multinode devstack environment and tried to live-migrate volume-backed instance, live-migration fails during copying of glance image to destination. When it happens nova leaves destination host in inconsistent state, and attempt to run live-migration again fails. Here is small investigation of a problem: nova creates instance directory on target compute node: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6152 in second run it fail here, because dest node wasn't properly cleanedup: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6148 Also it's really strange, that when pre_live_migration on dest node fails, flow returns to source which decide is that really required to clean_up destination or not. It will be more clearer to wrap pre_live_migration with try/catch and rollback it before response to source node: https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L4962-L4984 To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1488435/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
