CentOS 7
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OpenStack Ocata : How to use Manila#1
2017/03/05
 
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,L3,Metadata Agent |        |      Nova Compute     |
     |  Keystone   Glance    |        |      Manila Share     |        |      Open vSwitch     |
     |  Nova API             |        |                       |        |        L2 Agent       |
     |  Neutron Server       |        |                       |        |                       |
     |  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/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 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           | -                                    |
| ID                   | f6c47ee3-68cf-4375-a8c0-d66ce2d69b5d |
| optional_extra_specs |                                      |
+----------------------+--------------------------------------+

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

+-----------+--------------------+------------+------------+--------------------------------------+----------------------+
| ID        | Name               | visibility | is_default | required_extra_specs                 | optional_extra_specs |
+-----------+--------------------+------------+------------+--------------------------------------+----------------------+
| f6c47ee3- | default_share_type | public     | YES        | driver_handles_share_servers : False |                      |
+-----------+--------------------+------------+------------+--------------------------------------+----------------------+
[3] Create NFS share.
[root@dlp ~(keystone)]#
manila create NFS 1 --name share01

+---------------------------------------+--------------------------------------+
| Property                              | Value                                |
+---------------------------------------+--------------------------------------+
| status                                | creating                             |
| share_type_name                       | default_share_type                   |
| description                           | None                                 |
| availability_zone                     | None                                 |
| share_network_id                      | None                                 |
| share_server_id                       | None                                 |
| share_group_id                        | None                                 |
| host                                  |                                      |
| 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                                    | f6a8ef7c-a102-4191-9047-de60030ebbd8 |
| size                                  | 1                                    |
| source_share_group_snapshot_member_id | None                                 |
| user_id                               | cf3c5cbcdd214707b91d322a69af038e     |
| name                                  | share01                              |
| share_type                            | f6c47ee3-68cf-4375-a8c0-d66ce2d69b5d |
| has_replicas                          | False                                |
| replication_type                      | None                                 |
| created_at                            | 2017-03-05T11:02:22.000000           |
| share_proto                           | NFS                                  |
| mount_snapshot_support                | False                                |
| project_id                            | c654e2e098b14356b97b6e613775cc54     |
| metadata                              | {}                                   |
+---------------------------------------+--------------------------------------+

# few minutes later, the Status turns to available

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

+-----------+---------+------+-------------+-----------+-----------+--------------------+--------------------+-------------------+
| ID        | Name    | Size | Share Proto | Status    | Is Public | Share Type Name    | Host               | Availability Zone |
+-----------+---------+------+-------------+-----------+-----------+--------------------+--------------------+-------------------+
| f6a8ef7c- | share01 | 1    | NFS         | available | False     | default_share_type | network.srv.wor... | nova              |
+-----------+---------+------+-------------+-----------+-----------+--------------------+--------------------+-------------------+
[4] It's OK all, you can use Manila Shared filesystem from Instances like follows.
[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+---------+-----------------------------------+------------+
| ID        | Name     | Status  | Networks                          | Image Name |
+-----------+----------+---------+-----------------------------------+------------+
| b17e0565- | CentOS_7 | SHUTOFF | int_net=192.168.100.5, 10.0.0.201 | CentOS7    |
+-----------+----------+---------+-----------------------------------+------------+

# allow access rights first

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

+--------------+--------------------------------------+
| Property     | Value                                |
+--------------+--------------------------------------+
| access_key   | None                                 |
| share_id     | f6a8ef7c-a102-4191-9047-de60030ebbd8 |
| access_type  | ip                                   |
| access_to    | 10.0.0.0/24                          |
| access_level | rw                                   |
| state        | queued_to_apply                      |
| id           | 9549e2b7-df4b-4038-9678-7315a5962582 |
+--------------+--------------------------------------+

# it's no ploblem if State turns to active

[root@dlp ~(keystone)]#
manila access-list share01

+--------------------------------------+-------------+-------------+--------------+--------+------------+
| id                                   | access_type | access_to   | access_level | state  | access_key |
+--------------------------------------+-------------+-------------+--------------+--------+------------+
| 9549e2b7-df4b-4038-9678-7315a5962582 | ip          | 10.0.0.0/24 | rw           | active | None       |
+--------------------------------------+-------------+-------------+--------------+--------+------------+

[root@dlp ~(keystone)]#
openstack server start CentOS_7

# confirm access Path

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

path = 10.0.0.50:/var/lib/manila/mnt/share-eaa1ee1d-decc-43ea-a8f2-6b14c6fdee69
[root@dlp ~(keystone)]#
ssh 10.0.0.201

root@10.0.0.201's password:
Last login: Sun Mar 5 11:45:13 2017 from dlp.srv.world
# mount Manila shared storage

[root@host-192-168-100-5 ~]#
mount -t nfs 10.0.0.50:/var/lib/manila/mnt/share-eaa1ee1d-decc-43ea-a8f2-6b14c6fdee69 /mnt

[root@host-192-168-100-5 ~]#
df -hT

Filesystem                                                               Type      Size  Used Avail Use% Mounted on
/dev/mapper/cl-root                                                      xfs       8.0G 1021M  7.0G  13% /
devtmpfs                                                                 devtmpfs  990M     0  990M   0% /dev
tmpfs                                                                    tmpfs    1001M     0 1001M   0% /dev/shm
tmpfs                                                                    tmpfs    1001M  8.3M  993M   1% /run
tmpfs                                                                    tmpfs    1001M     0 1001M   0% /sys/fs/cgroup
/dev/vda1                                                                xfs      1014M  121M  894M  12% /boot
tmpfs                                                                    tmpfs     201M     0  201M   0% /run/user/0
10.0.0.50:/var/lib/manila/mnt/share-eaa1ee1d-decc-43ea-a8f2-6b14c6fdee69 nfs4      976M  2.5M  907M   1% /mnt
 
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