deprecated key storage.zfs_pool_name using lxd 2.2.0

[Emmanuel]

Can't launch instance in hypervisor LXD 2.2.0 on ubuntu 16LTS.

error file :
---
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager rt.update_available_resource(context, nodename)
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager File "/openstack/venvs/nova-16.0.1/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 641, in update_available_resource
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager resources = self.driver.get_available_resource(nodename)
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager File "/openstack/venvs/nova-16.0.1/lib/python2.7/site-packages/nova/virt/lxd/driver.py", line 1017, in get_available_resource
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager lxd_config['config']['storage.zfs_pool_name']
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager KeyError: 'storage.zfs_pool_name'
2017-12-08 09:24:37.781 3872 ERROR nova.compute.manager
...

2017-12-07 16:31:19.802 3873 ERROR nova.compute.manager [instance: 7c36f8da-de6f-42cf-95e5-004d92640f4a] raise exceptions.LXDAPIException(response)
2017-12-07 16:31:19.802 3873 ERROR nova.compute.manager [instance: 7c36f8da-de6f-42cf-95e5-004d92640f4a] LXDAPIException: The container's root device is missing the pool property.
2017-12-07 16:31:19.802 3873 ERROR nova.compute.manager [instance: 7c36f8da-de6f-42cf-95e5-004d92640f4a]

-----

# lxc storage list
+------+-------------+--------+--------+---------+
| NAME | DESCRIPTION | DRIVER | SOURCE | USED BY |
+------+-------------+--------+--------+---------+
| nova | | zfs | nova | 1 |
+------+-------------+--------+--------+---------+

# lxc storage show nova
config:
  source: nova
  volatile.initial_source: /dev/sdb
  zfs.pool_name: nova
description: ""
name: nova
driver: zfs
used_by:
- /1.0/profiles/default

# lxc config get default storage.zfs_pool_name
error: not found

# lxc config set storage.zfs_pool_name nova
error: Setting the key "storage.zfs_pool_name" is deprecated in favor of storage pool configuration.

# lxc --version
2.20

[Alex CS Huang (cshuangtw)]

You should set lxd pool in your nova-compute node
configure file: /etc/nova/nova.conf

add configure section for lxd provisor
[lxd]
pool = nova
root_dir = /

for addition notice you may set virt_type property in [libvirt] section:
virt_type = lxc