Public bug reported:
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
** Affects: nova
Importance: Undecided
Status: New
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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):
New
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
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1718455/+subscriptions
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