Reviewed: https://review.openstack.org/506093
Committed:
https://git.openstack.org/cgit/openstack/nova/commit/?id=87ca0d8af0d6440a7effd4da9e47321b3a335442
Submitter: Jenkins
Branch: master
commit 87ca0d8af0d6440a7effd4da9e47321b3a335442
Author: Sylvain Bauza <sba...@redhat.com>
Date: Thu Sep 21 10:52:46 2017 +0200
Ensure instance can migrate when launched concurrently
When we fixed the problem in If7da79356174be57481ef246618221e3b2ff8200
we forgot to modify a specific check in select_destinations().
Since _schedule() is returning the correct number of needed hosts but
we were still using the wrong number of instances to verify, the
conditional in select_destinations() was always incorrect.
Note that we needed to modify test.py and fake driver because:
- _do_check_can_live_migrate_destination was using CONF.host
- check_can_live_migrate_destination in the fake driver was
incorrectly trying to set a None value to the object while
libvirt fixed that earlier (block_migration=None when the
user specifies block_migration='auto' in the API)
- pre_live_migration in the fake driver was not returning
migrate_data, which is passed through live_migration and
_post_live_migration to set the migration object status
Change-Id: Iff839f3478ebe77bf3e2c4becbe9b9b62fff5035
Closes-Bug: #1718455
** Changed in: nova
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1718455
Title:
[pike] Nova host disable and Live Migrate all instances fail.
Status in OpenStack Compute (nova):
Fix Released
Status in OpenStack Compute (nova) pike series:
In Progress
Bug description:
Disabling a host in horizon and live-migrating instances off fail with
the following error if the instances are created with a single boot
command. eg. create 10 cirros instances through the horizon dashboard.
The instances are all KVM and backed by Cinder Volumes.
2017-09-19 19:02:30.588 19741 DEBUG nova.scheduler.filter_scheduler
[req-4268ea83-0657-40cc-961b-f0ae9fb3019e
385c60230b3f49da930dda4d089eda6b 723aa12337a44f818b6d1e1a59f16e49 -
default default] There are 1 hosts available but 10 instances
requested to build. select_destinations /usr/lib/python2.7/dist-
packages/nova/scheduler/filter_scheduler.py:101
Steps to reproduce:
1. Create 10 instances via the horizon dashboard at the same time.
2. Set a compute host disabled.
3. Choose the migrate host option and select live-migrate as the method.
4. The live migration will fail all after passing the scheduler with the
error above.
NOTE: Creating 10 separate instances with individual "openstack server
create" commands or running the launch instance 10 times in horizon
does not produce the same result and the scheduler will evacuate the
host as expected.
Nova version on controller:
ii nova-api 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - API frontend
ii nova-common 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - common files
ii nova-conductor 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - conductor service
ii nova-consoleauth 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - Console Authenticator
ii nova-novncproxy 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - NoVNC proxy
ii nova-placement-api 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - placement API frontend
ii nova-scheduler 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute - virtual machine scheduler
ii python-nova 2:16.0.0-0ubuntu1~cloud0
all OpenStack Compute Python libraries
ii python-novaclient
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https://bugs.launchpad.net/nova/+bug/1718455/+subscriptions
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