6.2 KiB
Block Storage
Create a volume
Source the
demo
credentials to perform the following steps as a non-administrative project:$ source demo-openrc.sh
Create a 1 GB volume:
$ 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 | +---------------------------------------+--------------------------------------+
After a short time, the volume status should change from
creating
toavailable
:$ cinder list +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+ | ID | Status | Name | Size | Volume Type | Bootable | Multiattach | Attached to | +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+ | 09e3743e-192a-4ada-b8ee-d35352fa65c4 | available | volume1 | 1 | - | false | False | | +--------------------------------------+-----------+---------+------+-------------+----------+-------------+-------------+
Attach the volume to an instance
Attach a volume to an instance:
$ nova volume-attach INSTANCE_NAME VOLUME_ID
Replace
INSTANCE_NAME
with the name of the instance andVOLUME_ID
with the ID of the volume you want to attach to it.Example
Attach the
09e3743e-192a-4ada-b8ee-d35352fa65c4
volume to thepublic-instance
instance:$ 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 | +----------+--------------------------------------+
List volumes:
$ 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 | +--------------------------------------+-----------+--------------+------+-------------+--------------------------------------+
Access your instance using SSH and use the
fdisk
command to verify presence of the volume as the/dev/vdb
block storage device:$ 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
Note
You must create a file system on the device and mount it to use the volume.
For more information about how to manage volumes, see the OpenStack User Guide.
Return to launch-instance
.