CentOS 7
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OpenStack Train : How to use Manila#1
2019/10/28
 
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  |   |      Open vSwitch     |   |        Libvirt        |
|  Memcached  httpd     |   |        L2 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |        L3 Agent       |   |      Open vSwitch     |
|  Nova API             |   |     Metadata Agent    |   |        L2 Agent       |
|  Neutron Server       |   |      Manila Share     |   |                       |
|  Metadata Agent       |   |                       |   |                       |
|  Manila API           |   |                       |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Configure Storage Node.
[root@storage ~]#
yum -y install nfs-utils nfs4-acl-tools
# create a volume for Manila on free block device

[root@storage ~]#
pvcreate /dev/sdc1

  Physical volume "/dev/sdc1" successfully created
[root@storage ~]#
vgcreate manila-volumes /dev/sdc1

  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_ips = 10.0.0.50
[root@storage ~]#
systemctl start openstack-manila-share nfs-server

[root@storage ~]#
systemctl enable openstack-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           | YES                                  |
| ID                   | ec5e99d3-936a-468b-b880-460ee640ee67 |
| optional_extra_specs |                                      |
| Description          | None                                 |
+----------------------+--------------------------------------+

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

+--------------------------------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
| ID                                   | Name               | visibility | is_default | required_extra_specs                 | optional_extra_specs | Description |
+--------------------------------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
| ec5e99d3-936a-468b-b880-460ee640ee67 | default_share_type | public     | YES        | driver_handles_share_servers : False |                      | None        |
+--------------------------------------+--------------------+------------+------------+--------------------------------------+----------------------+-------------+
[3] Login as a common user to create Manila NFS Share.
[cent@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                                    | 3b1bfaeb-9b99-4165-8efa-2a17f093252a |
| size                                  | 10                                   |
| source_share_group_snapshot_member_id | None                                 |
| user_id                               | 14ad73cc98744e01a51886e13d541013     |
| name                                  | share01                              |
| share_type                            | ec5e99d3-936a-468b-b880-460ee640ee67 |
| has_replicas                          | False                                |
| replication_type                      | None                                 |
| created_at                            | 2019-10-28T07:25:17.000000           |
| share_proto                           | NFS                                  |
| mount_snapshot_support                | False                                |
| project_id                            | 67b2b71cee384d69939e6b3963e0b2db     |
| metadata                              | {}                                   |
+---------------------------------------+--------------------------------------+

# few minutes later, the Status turns to available

[cent@dlp ~(keystone)]$
manila list

+--------------------------------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
| ID                                   | Name    | Size | Share Proto | Status    | Is Public | Share Type Name    | Host | Availability Zone |
+--------------------------------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
| 3b1bfaeb-9b99-4165-8efa-2a17f093252a | share01 | 10   | NFS         | available | False     | default_share_type |      | nova              |
+--------------------------------------+---------+------+-------------+-----------+-----------+--------------------+------+-------------------+
[4] It's OK all, you can use Manila Shared filesystem on your own instances like follows.
[cent@dlp ~(keystone)]$
openstack server list

+--------------------------------------+----------+---------+-------------------------------------+---------+----------+
| ID                                   | Name     | Status  | Networks                            | Image   | Flavor   |
+--------------------------------------+----------+---------+-------------------------------------+---------+----------+
| b3c21241-2800-4109-831b-6fd69d20ecf8 | CentOS_7 | SHUTOFF | int_net=192.168.100.179, 10.0.0.233 | CentOS7 | m1.small |
+--------------------------------------+----------+---------+-------------------------------------+---------+----------+

# allow access permission first

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

+--------------+--------------------------------------+
| Property     | Value                                |
+--------------+--------------------------------------+
| access_key   | None                                 |
| share_id     | 3b1bfaeb-9b99-4165-8efa-2a17f093252a |
| created_at   | 2019-10-28T07:26:15.000000           |
| updated_at   | None                                 |
| access_type  | ip                                   |
| access_to    | 10.0.0.0/24                          |
| access_level | rw                                   |
| state        | queued_to_apply                      |
| id           | 48b41aaa-90cf-453b-8024-9b7507cbe3aa |
| metadata     | {}                                   |
+--------------+--------------------------------------+

# OK if State turns to active

[cent@dlp ~(keystone)]$
manila access-list share01

+--------------------------------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+
| id                                   | access_type | access_to   | access_level | state  | access_key | created_at                 | updated_at |
+--------------------------------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+
| 48b41aaa-90cf-453b-8024-9b7507cbe3aa | ip          | 10.0.0.0/24 | rw           | active | None       | 2019-10-28T07:26:15.000000 | None       |
+--------------------------------------+-------------+-------------+--------------+--------+------------+----------------------------+------------+

[cent@dlp ~(keystone)]$
openstack server start CentOS_7

# confirm access Path

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

path = 10.0.0.50:/var/lib/manila/mnt/share-0b1dc4fd-b44e-48ea-a6ef-b9f03223c0a0
[cent@dlp ~(keystone)]$
ssh centos@10.0.0.233

Last login: Fri Oct 26 16:11:45 2019 from dlp.srv.world
[centos@centos-7 ~]$
# mount Manila shared storage

[centos@centos-7 ~]$
sudo mount -t nfs \
10.0.0.50:/var/lib/manila/mnt/share-0b1dc4fd-b44e-48ea-a6ef-b9f03223c0a0 /mnt

[centos@centos-7 ~]$
df -hT

Filesystem                                                               Type      Size  Used Avail Use% Mounted on
devtmpfs                                                                 devtmpfs  908M     0  908M   0% /dev
tmpfs                                                                    tmpfs     919M     0  919M   0% /dev/shm
tmpfs                                                                    tmpfs     919M  8.5M  911M   1% /run
tmpfs                                                                    tmpfs     919M     0  919M   0% /sys/fs/cgroup
/dev/mapper/centos-root                                                  xfs       8.0G  1.3G  6.8G  16% /
/dev/vda1                                                                xfs      1014M  149M  866M  15% /boot
tmpfs                                                                    tmpfs     184M     0  184M   0% /run/user/1001
10.0.0.50:/var/lib/manila/mnt/share-0b1dc4fd-b44e-48ea-a6ef-b9f03223c0a0 nfs4      9.8G   36M  9.2G   1% /mnt
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