在存储节点：
# pvcreate /dev/sdb
# vgcreate vg100gb /dev/sdb
# openstack-config --set /etc/cinder/cinder.conf DEFAULT volume_group vg100gb
# chkconfig --list|grep cinder|awk '{print "service "$1" restart"}'
service openstack-cinder-api restart
service openstack-cinder-backup restart
service openstack-cinder-scheduler restart
service openstack-cinder-volume restart
在控制节点：
# source demo-openrc.sh
# cinder create --display-name demo-volume1 1
+---------------------+--------------------------------------+
| Property | Value |
+---------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| created_at | 2015-12-30T14:54:15.337702 |
| display_description | None |
| display_name | demo-volume1 |
| encrypted | False |
| id | ae0fe7e4-8db6-4b95-b2ae-f98c7ebca920 |
| metadata | {} |
| size | 1 |
| snapshot_id | None |
| source_volid | None |
| status | creating |
| volume_type | None |
+---------------------+--------------------------------------+
# cinder list
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
| ID | Status | Display Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
| ae0fe7e4-8db6-4b95-b2ae-f98c7ebca920 | available | demo-volume1 | 1 | None | false | |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
在存储节点：
# lvs -S vg_name=vg100gb
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
volume-ae0fe7e4-8db6-4b95-b2ae-f98c7ebca920 vg100gb -wi-a----- 1.00g
本文写的是默认vg，还可以添加额外的vg：
http://fatmin.com/2015/04/28/openstack-cinder-add-additional-backend-volumes/comment-page-1/