Ubuntu 12.04
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OpenStack Havana - Use Virtual Storage(LVM)
2013/12/04
 
It's possible to use Virtual Storage provided by Cinder for Virtual Machine Instance.
This example shows to set to use LVM for Virtual Storage.
[1] Create a new Volume group for Cinder.
root@dlp ~(keystone)#
pvcreate /dev/sdb1

Physical volume "/dev/sdb1" successfully created
root@dlp ~(keystone)#
vgcreate -s 32M vg_volume01 /dev/sdb1

Volume group "vg_volume01" successfully created
[2] Configure Cinder
root@dlp ~(keystone)#
vi /etc/cinder/cinder.conf
# line 6: specify volume-group name

volume_group=
vg_volume01
root@dlp ~(keystone)#
service cinder-volume restart

cinder-volume stop/waiting
cinder-volume start/running, process 2454
[3] For example, create a volume named "disk01", 10GB.
root@dlp ~(keystone)#
cinder create --display_name disk01 10 

+---------------------+--------------------------------------+
|       Property      |                Value                 |
+---------------------+--------------------------------------+
|     attachments     |                  []                  |
|  availability_zone  |                 nova                 |
|       bootable      |                false                 |
|      created_at     |      2013-12-05T01:59:49.989946      |
| display_description |                 None                 |
|     display_name    |                disk01                |
|          id         | ac32fb93-d719-4dba-88d8-1d78fdb90394 |
|       metadata      |                  {}                  |
|         size        |                  1                   |
|     snapshot_id     |                 None                 |
|     source_volid    |                 None                 |
|        status       |               creating               |
|     volume_type     |                 None                 |
+---------------------+--------------------------------------+
root@dlp ~(keystone)#
cinder list 

+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
|                  ID                  |   Status  | Display Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
| ac32fb93-d719-4dba-88d8-1d78fdb90394 | available |    disk01    |  1   |     None    |  false   |             |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
[4] Attach the volume just created to Instance.
The following example just attached to the Instance as "/dev/vdb".
root@dlp ~(keystone)#
nova list 

+--------------------------------------+--------------+---------+------------+-------------+--------------------+
| ID                                   | Name         | Status  | Task State | Power State | Networks           |
+--------------------------------------+--------------+---------+------------+-------------+--------------------+
| e4eddb40-a07e-42b0-8c35-0a37b90a027b | Ubuntu_Saucy | SHUTOFF | None       | Shutdown    | network01=10.1.0.2 |
+--------------------------------------+--------------+---------+------------+-------------+--------------------+
root@dlp ~(keystone)#
nova volume-attach Ubuntu_Saucy ac32fb93-d719-4dba-88d8-1d78fdb90394 auto 

+----------+--------------------------------------+
| Property | Value                                |
+----------+--------------------------------------+
| device   | /dev/vdb                             |
| serverId | 081bba5e-0a88-4ae5-9757-645f682d172b |
| id       | 20a8ef96-4530-4f2d-b89f-0086993c38bb |
| volumeId | 20a8ef96-4530-4f2d-b89f-0086993c38bb |
+----------+--------------------------------------+
[5] By the way, it's possible to operate create or attach, dettach volumes on the DashBoard.
 
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