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

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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 command 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).