块设备存储¶

新建卷¶

1. 加载 ``demo``证书，作为非管理员项目执行下面的步骤：

   $ . demo-openrc
   

2. 创建一个 1 GB 的卷：

   $ openstack volume create --size 1 volume1
   +---------------------+--------------------------------------+
   | Field               | Value                                |
   +---------------------+--------------------------------------+
   | attachments         | []                                   |
   | availability_zone   | nova                                 |
   | bootable            | false                                |
   | consistencygroup_id | None                                 |
   | created_at          | 2016-03-08T14:30:48.391027           |
   | description         | None                                 |
   | encrypted           | False                                |
   | id                  | a1e8be72-a395-4a6f-8e07-856a57c39524 |
   | multiattach         | False                                |
   | name                | volume1                              |
   | properties          |                                      |
   | replication_status  | disabled                             |
   | size                | 1                                    |
   | snapshot_id         | None                                 |
   | source_volid        | None                                 |
   | status              | creating                             |
   | type                | None                                 |
   | updated_at          | None                                 |
   | user_id             | 684286a9079845359882afc3aa5011fb     |
   +---------------------+--------------------------------------+
   

3. 过会，卷状态应该从``creating`` 变成``available``：

   $ openstack volume list
   +--------------------------------------+--------------+-----------+------+-------------+
   | ID                                   | Display Name | Status    | Size | Attached to |
   +--------------------------------------+--------------+-----------+------+-------------+
   | a1e8be72-a395-4a6f-8e07-856a57c39524 | volume1      | available |    1 |             |
   +--------------------------------------+--------------+-----------+------+-------------+
   

附加卷到一个实例上¶

1. 附加卷到一个实例上：

   $ openstack server add volume INSTANCE_NAME VOLUME_NAME
   

   使用实例名称替换 INSTANCE_NAME 并使用你想要附加卷的名称替换``VOLUME_NAME ``。

   例子

   附加 volume1 ``卷到 ``provider-instance 云主机：

   $ openstack server add volume provider-instance volume1
   

   注解

   这个命令执行后没有输出。

2. 列出卷：

   $ openstack volume list
   +--------------------------------------+--------------+--------+------+--------------------------------------------+
   | ID                                   | Display Name | Status | Size | Attached to                                |
   +--------------------------------------+--------------+--------+------+--------------------------------------------+
   | a1e8be72-a395-4a6f-8e07-856a57c39524 | volume1      | in-use |    1 | Attached to provider-instance on /dev/vdb  |
   +--------------------------------------+--------------+--------+------+--------------------------------------------+
   

3. 使用SSH方式访问你的实力，并使用``fdisk`` 命令验证`/dev/vdb`块存储设备作为卷存在。

    $ sudo fdisk -l
   
    Disk /dev/vda: 1073 MB, 1073741824 bytes
    255 heads, 63 sectors/track, 130 cylinders, total 2097152 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000
   
       Device Boot      Start         End      Blocks   Id  System
   /dev/vda1   *       16065     2088449     1036192+  83  Linux
   
    Disk /dev/vdb: 1073 MB, 1073741824 bytes
    16 heads, 63 sectors/track, 2080 cylinders, total 2097152 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000
   
    Disk /dev/vdb doesn't contain a valid partition table
   

   注解

   你必须在设备上创建文件系统并挂载它，才能使用这个卷。

想了解更多关于如何管理卷， 请参考OpenStack终端用户手册里的`Manage volumes <http://docs.openstack.org/user-guide/common/cli-manage-volumes.html>`__

返回到：ref: launch-instance。