Volume Retype
Overview
This guide will help you getting started with changing volume type in OpenStack.
For v2 volumes as well as the deprecated ’enc’ volume types you will need to detach the volume from your server before retyping. Either shut down your server or unmount the volume in your operating system before detaching the volume in Openstack.
Volume retype from Horizon
In this example, we will use a detached volume with the type 16k-IOPS-enc.
Navigate to “Project” → “Volumes” choose the volume you want to retype and press the ⬇ arrow next to Edit Volume and select Change Volume Type.
Choose Type
In the pop-up window, choose a new type and set Migration Policy to On Demand.
Check status
The volume status will change to retyping, this can take a while depending on the volume size.
After everything is done, the volume will have the status available.
Volume retype using OpenStack CLI
List all available volumes: openstack volume list --long.
openstack volume list --long
+--------------------------------------+------------------+-----------+------+--------------+----------+--------------------------------------+--------------------------------------+
| ID | Name | Status | Size | Type | Bootable | Attached to | Properties |
+--------------------------------------+------------------+-----------+------+--------------+----------+--------------------------------------+--------------------------------------+
| ad2ca224-78e0-4930-941e-596bbea05b95 | encrypted-volume | available | 1 | 16k-IOPS-enc | false | | |
| db329723-1a3e-4fb9-be07-da6e0a5ff0b1 | | in-use | 20 | 4k-IOPS | true | Attached to docker-test on /dev/vda | attached_mode='rw', readonly='False' |
+--------------------------------------+------------------+-----------+------+--------------+----------+--------------------------------------+--------------------------------------+
Retype volume with: openstack volume set --type <volume-type> --retype-policy on-demand <Volume ID or Name>.
openstack volume set --type 16k-IOPS --retype-policy on-demand ad2ca224-78e0-4930-941e-596bbea05b95
openstack volume list --long
+--------------------------------------+------------------+----------+------+--------------+----------+--------------------------------------+--------------------------------------+
| ID | Name | Status | Size | Type | Bootable | Attached to | Properties |
+--------------------------------------+------------------+----------+------+--------------+----------+--------------------------------------+--------------------------------------+
| ad2ca224-78e0-4930-941e-596bbea05b95 | encrypted-volume | retyping | 1 | 16k-IOPS-enc | false | | |
| db329723-1a3e-4fb9-be07-da6e0a5ff0b1 | | in-use | 20 | 4k-IOPS | true | Attached to docker-test on /dev/vda | attached_mode='rw', readonly='False' |
+--------------------------------------+------------------+----------+------+--------------+----------+--------------------------------------+--------------------------------------+
When retyping is done, status will be shown as: available.
openstack volume list --long
+--------------------------------------+------------------+-----------+------+----------+----------+--------------------------------------+--------------------------------------+
| ID | Name | Status | Size | Type | Bootable | Attached to | Properties |
+--------------------------------------+------------------+-----------+------+----------+----------+--------------------------------------+--------------------------------------+
| ad2ca224-78e0-4930-941e-596bbea05b95 | encrypted-volume | available | 1 | 16k-IOPS | false | | |
| db329723-1a3e-4fb9-be07-da6e0a5ff0b1 | | in-use | 20 | 4k-IOPS | true | Attached to docker-test on /dev/vda | attached_mode='rw', readonly='False' |
+--------------------------------------+------------------+-----------+------+----------+----------+--------------------------------------+--------------------------------------+