块设备存储¶

创建卷¶

1. 加载 ``demo``凭证，作为非管理员项目执行下面的步骤：

   $ source demo-openrc.sh
   

2. 创建一个 1 GB 的卷：

   $ cinder create --display-name volume1 1
   +---------------------------------------+--------------------------------------+
   |                Property               |                Value                 |
   +---------------------------------------+--------------------------------------+
   |              attachments              |                  []                  |
   |           availability_zone           |                 nova                 |
   |                bootable               |                false                 |
   |          consistencygroup_id          |                 None                 |
   |               created_at              |      2015-10-12T16:02:29.000000      |
   |              description              |                 None                 |
   |               encrypted               |                False                 |
   |                   id                  | 09e3743e-192a-4ada-b8ee-d35352fa65c4 |
   |                metadata               |                  {}                  |
   |              multiattach              |                False                 |
   |                  name                 |               volume1                |
   |      os-vol-tenant-attr:tenant_id     |   ed0b60bf607743088218b0a533d5943f   |
   |   os-volume-replication:driver_data   |                 None                 |
   | os-volume-replication:extended_status |                 None                 |
   |           replication_status          |               disabled               |
   |                  size                 |                  1                   |
   |              snapshot_id              |                 None                 |
   |              source_volid             |                 None                 |
   |                 status                |               creating               |
   |                user_id                |   58126687cbcc4888bfa9ab73a2256f27   |
   |              volume_type              |                 None                 |
   +---------------------------------------+--------------------------------------+
   

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

   $ cinder list
   +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+
   |                  ID                  |   Status  |   Name  | Size | Volume Type | Bootable | Multiattach | Attached to |
   +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+
   | 09e3743e-192a-4ada-b8ee-d35352fa65c4 | available | volume1 |  1   |      -      |  false   |    False    |             |
   +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+
   

附加卷到一个实例上¶

1. 附加卷到一个实例上：

   $ nova volume-attach INSTANCE_NAME VOLUME_ID
   

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

   例子

   附加 09e3743e-192a-4ada-b8ee-d35352fa65c4``卷到 ``public-instance 实例：

   $ nova volume-attach public-instance 09e3743e-192a-4ada-b8ee-d35352fa65c4
   +----------+--------------------------------------+
   | Property | Value                                |
   +----------+--------------------------------------+
   | device   | /dev/vdb                             |
   | id       | 158bea89-07db-4ac2-8115-66c0d6a4bb48 |
   | serverId | 181c52ba-aebc-4c32-a97d-2e8e82e4eaaf |
   | volumeId | 09e3743e-192a-4ada-b8ee-d35352fa65c4 |
   +----------+--------------------------------------+
   

2. 列出卷：

   $ nova volume-list
   +--------------------------------------+-----------+--------------+------+-------------+--------------------------------------+
   | ID                                   | Status    | Display Name | Size | Volume Type | Attached to                          |
   +--------------------------------------+-----------+--------------+------+-------------+--------------------------------------+
   | 09e3743e-192a-4ada-b8ee-d35352fa65c4 | in-use    |              | 1    | -           | 181c52ba-aebc-4c32-a97d-2e8e82e4eaaf |
   +--------------------------------------+-----------+--------------+------+-------------+--------------------------------------+
   

3. 使用SSH访问你的实例，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。

更多如何管理卷， 查看 OpenStack User Guide.

返回到 启动一个实例 。