Ubuntu 18.04
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OpenStack Queens : How to use Manila#1
2018/06/19
 
This is How to use OpenStack Shared File System (Manila).
This example is based on the emvironment like follows.
For example, Configure local block device as shared storage on Storage Node and use it from Instances. Therefore, it needs there is a free block device on Storage Node.
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Storage Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |                       |   |        Libvirt        |
|  Memcached  httpd     |   |        L2 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |        L3 Agent       |   |        L2 Agent       |
|  Nova API             |   |     Metadata Agent    |   |                       |
|  Neutron Server       |   |      Manila Share     |   |                       |
|  Metadata Agent       |   |                       |   |                       |
|  Manila API           |   |                       |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Configure Storage Node.
root@storage:~#
apt -y install lvm2 nfs-kernel-server
# create a volume for Manila on free block device

root@storage:~#
pvcreate /dev/sdb1

  Physical volume "/dev/sdb1" successfully created
root@storage:~#
vgcreate manila-volumes /dev/sdb1

  Volume group "manila-volumes" successfully created
root@storage:~#
vi /etc/manila/manila.conf
# add follows into [DEFAULT] section

enabled_share_backends = lvm
# add to the end

[lvm]
share_backend_name = LVM
share_driver = manila.share.drivers.lvm.LVMShareDriver
driver_handles_share_servers = False
lvm_share_volume_group = manila-volumes
lvm_share_export_ip = 10.0.0.50
root@storage:~#
systemctl restart manila-share nfs-server

root@storage:~#
systemctl enable manila-share nfs-server
[2] Create default share type. It's OK to work on any node. (This example is on Control Node)
root@dlp ~(keystone)#
manila type-create default_share_type False

+----------------------+--------------------------------------+
| Property             | Value                                |
+----------------------+--------------------------------------+
| required_extra_specs | driver_handles_share_servers : False |
| Name                 | default_share_type                   |
| Visibility           | public                               |
| is_default           | -                                    |
| ID                   | 4d68e5c3-5840-4623-846a-e872740c589b |
| optional_extra_specs |                                      |
| Description          | None                                 |
+----------------------+--------------------------------------+

root@dlp ~(keystone)#
manila type-list

+--------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
| ID           | Name               | visibility | is_default | required_extra_specs                 | optional_extra_specs | Description |
+--------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
| 4d68e5c3-... | default_share_type | public     | YES        | driver_handles_share_servers : False |                      | None        |
+--------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
[3] Login as a common user to create Manila NFS Share.
ubuntu@dlp ~(keystone)$
manila create NFS 10 --name share01

+---------------------------------------+--------------------------------------+
| Property                              | Value                                |
+---------------------------------------+--------------------------------------+
| status                                | creating                             |
| share_type_name                       | default_share_type                   |
| description                           | None                                 |
| availability_zone                     | None                                 |
| share_network_id                      | None                                 |
| share_group_id                        | None                                 |
| revert_to_snapshot_support            | False                                |
| access_rules_status                   | active                               |
| snapshot_id                           | None                                 |
| create_share_from_snapshot_support    | False                                |
| is_public                             | False                                |
| task_state                            | None                                 |
| snapshot_support                      | False                                |
| id                                    | 442294ca-efd1-4801-b62a-a5d4686ad6fd |
| size                                  | 10                                   |
| source_share_group_snapshot_member_id | None                                 |
| user_id                               | 601473fae2c444a484860046ef2484e2     |
| name                                  | share01                              |
| share_type                            | 4d68e5c3-5840-4623-846a-e872740c589b |
| has_replicas                          | False                                |
| replication_type                      | None                                 |
| created_at                            | 2018-06-19T02:56:03.000000           |
| share_proto                           | NFS                                  |
| mount_snapshot_support                | False                                |
| project_id                            | 04a16d601dc940dd845f3092ce2712e8     |
| metadata                              | {}                                   |
+---------------------------------------+--------------------------------------+

# few minutes later, the Status turns to available

ubuntu@dlp ~(keystone)$
manila list

+--------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
| ID           | Name    | Size | Share Proto | Status    | Is Public | Share Type Name    | Host | Availability Zone |
+--------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
| 442294ca-... | share01 | 10   | NFS         | available | False     | default_share_type |      | nova              |
+--------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
[4] It's OK all, you can use Manila Shared filesystem from Instances like follows.
ubuntu@dlp ~(keystone)$
openstack server list

+--------------+-------------+---------+-----------------------------------+------------+----------+
| ID           | Name        | Status  | Networks                          | Image      | Flavor   |
+--------------+-------------+---------+-----------------------------------+------------+----------+
| 3aae02ab-... | Ubuntu_1804 | SHUTOFF | int_net=192.168.100.5, 10.0.0.205 | Ubuntu1804 | m1.small |
+--------------+-------------+---------+-----------------------------------+------------+----------+

# allow access permission first

ubuntu@dlp ~(keystone)$
manila access-allow share01 ip 10.0.0.0/24 --access-level rw

+--------------+--------------------------------------+
| Property     | Value                                |
+--------------+--------------------------------------+
| access_key   | None                                 |
| share_id     | 442294ca-efd1-4801-b62a-a5d4686ad6fd |
| created_at   | 2018-06-19T02:58:08.000000           |
| updated_at   | None                                 |
| access_type  | ip                                   |
| access_to    | 10.0.0.0/24                          |
| access_level | rw                                   |
| state        | queued_to_apply                      |
| id           | bdf6a237-d57a-48a8-86f1-2a19b89b63c9 |
+--------------+--------------------------------------+

# it's no ploblem if State turns to active

ubuntu@dlp ~(keystone)$
manila access-list share01

+--------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+
| id           | access_type | access_to   | access_level | state  | access_key | created_at                 | updated_at |
+--------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+
| bdf6a237-... | ip          | 10.0.0.0/24 | rw           | active | None       | 2018-06-19T02:58:08.000000 | None       |
+--------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+

ubuntu@dlp ~(keystone)$
openstack server start Ubuntu_1804

# confirm access Path

ubuntu@dlp ~(keystone)$
manila show share01 | grep path | cut -d'|' -f3

path = 10.0.0.50:/var/lib/manila/mnt/share-c2f167f1-4c7b-43d1-bc63-723ad71e03f1
ubuntu@dlp ~(keystone)$
ssh ubuntu@10.0.0.205

Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.15.0-23-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

 System information disabled due to load higher than 1.0


27 packages can be updated.
18 updates are security updates.


Last login: Fri Jun 15 19:10:31 2018 from 10.0.0.30
# mount Manila shared storage

ubuntu@ubuntu-1804:~$
sudo mount -t nfs 10.0.0.50:/var/lib/manila/mnt/share-c2f167f1-4c7b-43d1-bc63-723ad71e03f1 /mnt

ubuntu@ubuntu-1804:~$
df -hT

Filesystem                                       Type      Size  Used Avail Use% Mounted on
udev                                             devtmpfs  968M     0  968M   0% /dev
tmpfs                                            tmpfs     200M  636K  199M   1% /run
/dev/mapper/ubuntu--vg-root                      ext4      8.9G  1.8G  6.7G  21% /
tmpfs                                            tmpfs     997M     0  997M   0% /dev/shm
tmpfs                                            tmpfs     5.0M     0  5.0M   0% /run/lock
tmpfs                                            tmpfs     997M     0  997M   0% /sys/fs/cgroup
tmpfs                                            tmpfs     200M     0  200M   0% /run/user/1000
10.0.0.50:/var/lib/manila/mnt/share-c2f167f1-... nfs4      9.8G   36M  9.3G   1% /mnt
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