hadoop/hadoop-ozone/docs/content/VolumeCommands.md

---
title: Volume Commands
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Volume commands generally need administrator privileges. The ozone shell supports the following volume commands.

  * [create](#create)
  * [delete](#delete)
  * [info](#info)
  * [list](#list)
  * [update](#update)

### Create

The volume create command allows an administrator to create a volume and
assign it to a user.

***Params:***

| Arguments                      |  Comment                                |
|--------------------------------|-----------------------------------------|
| -q, --quota                    | Optional, This argument that specifies the maximum size this volume can use in the Ozone cluster.                    |
| -u, --user                     |  Required, The name of the user who owns this volume. This user can create, buckets and keys on this volume.                                       |
|  Uri                           | The name of the volume.                                        |

{{< highlight bash >}}
ozone sh volume create --quota=1TB --user=bilbo /hive
{{< /highlight >}}

The above command will create a volume called _hive_ on the ozone cluster. This
volume has a quota of 1TB, and the owner is _bilbo_.

### Delete

The volume delete commands allows an administrator to delete a volume. If the
volume is not empty then this command will fail.

***Params:***

| Arguments                      |  Comment                                |
|--------------------------------|-----------------------------------------|
|  Uri                           | The name of the volume.

{{< highlight bash >}}
ozone sh volume delete /hive
{{< /highlight >}}

The above command will delete the volume hive, if the volume has no buckets
inside it.

### Info

The volume info commands returns the information about the volume including
quota and owner information.
***Params:***

| Arguments                      |  Comment                                |
|--------------------------------|-----------------------------------------|
|  Uri                           | The name of the volume.

{{< highlight bash >}}
ozone sh volume info /hive
{{< /highlight >}}

The above command will print out the information about hive volume.

### List

The volume list command will list the volumes owned by a user.

{{< highlight bash >}}
ozone sh volume list --user hadoop
{{< /highlight >}}

The above command will print out all the volumes owned by the user hadoop.

### Update

The volume update command allows changing of owner and quota on a given volume.

***Params:***

| Arguments                      |  Comment                                |
|--------------------------------|-----------------------------------------|
| -q, --quota                    | Optional, This argument that specifies the maximum size this volume can use in the Ozone cluster.                    |
| -u, --user                     |  Optional, The name of the user who owns this volume. This user can create, buckets and keys on this volume.                                       |
|  Uri                           | The name of the volume.                                        |

{{< highlight bash >}}
ozone sh volume update --quota=10TB /hive
{{< /highlight >}}

The above command updates the volume quota to 10TB.

You can try out these commands from the docker instance of the [Alpha
Cluster](runningviadocker.html).