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10.4. Managing Bricks

This section describes the brick operations of the Red Hat Storage Console API such as adding and removing them from a volume.
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10.4.1. Listing of Bricks
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A listing of bricks in a volume is obtained by issuing a GET request on the volume URI. 
GET /api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks HTTP/1.1
Accept: application/xml
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The API returns the following representation: 
HTTP/1.1 200 OK
Accept: application/xml

<bricks>
    <brick href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/29311ecf-d8db-4912-902b-b31dba8803d2" id="29311ecf-d8db-4912-902b-b31dba8803d2">
        <actions>
            <link href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/29311ecf-d8db-4912-902b-b31dba8803d2/replace" rel="replace"/>
        </actions>
        <gluster_volume href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554" id="83101900-2f12-4855-838e-36b8a9e04554"/>
        <server_id>fcb46b88-f32e-11e1-918a-0050568c4349</server_id>
        <brick_dir>/tmp/data-brick1</brick_dir>
        <state>UP</state>
    </brick>
    <brick href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/33f04f44-c78c-4c76-a23c-fe9d750c2fd3" id="33f04f44-c78c-4c76-a23c-fe9d750c2fd3">
        <actions>
            <link href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/33f04f44-c78c-4c76-a23c-fe9d750c2fd3/replace" rel="replace"/>
        </actions>
        <gluster_volume href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554" id="83101900-2f12-4855-838e-36b8a9e04554"/>
        <server_id>de173e6a-fb05-11e1-a2fc-0050568c4349</server_id>
        <brick_dir>/tmp/data-brick2</brick_dir>
        <state>UP</state>
    </brick>
</bricks>
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10.4.2. Adding a Brick
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The API adds a new brick to a volume in your cluster with a POST request to its URI. 
POST /api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks HTTP/1.1
Accept: application/xml
Content-type: application/xml

<bricks>
  <brick>
<server_id>fcb46b88-f32e-11e1-918a-0050568c4349</server_id>
    <brick_dir>/export/data/brick3</brick_dir>
  </brick>
</bricks>
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cURL command:
curl -X POST -H "Accept: application/xml" -H "Content-Type: application/xml" -u [USER:PASS] https://[RHSC HOST]/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks -d "<bricks><brick><server_id>fcb46b88-f32e-11e1-918a-0050568c4349</server_id><brick_dir>/export/data/brick3</brick_dir></brick></bricks>"
The API returns the following representation: 
HTTP/1.1 201 Created
Content-Type: application/xml

<bricks>
    <brick href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/a2a496fc-9df0-446f-b632-da808d65d501" id="a2a496fc-9df0-446f-b632-da808d65d501">
        <actions>
            <link href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks/a2a496fc-9df0-446f-b632-da808d65d501/replace" rel="replace"/>
        </actions>
        <gluster_volume href="/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554" id="83101900-2f12-4855-838e-36b8a9e04554"/>
        <server_id>fcb46b88-f32e-11e1-918a-0050568c4349</server_id>
        <brick_dir>/export/data/brick3</brick_dir>
        <state>UP</state>
    </brick>
</bricks>
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10.4.3. Removing a Brick
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The API removes a brick(s) from a volume with a DELETE request sent to its URI. Before removing a brick, data must be migrated to ensure there is no data loss with a POST request sent to its URI. 
POST /api/clusters/44571c63-a110-4fba-9a8c-7b30446ba8bf/glustervolumes/380474af-360b-48fa-a210-9c08b913ffa3/bricks/migrate -d "<action><bricks><brick><name>host:brick_dir</name></brick></bricks></action>"
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cURL command:
curl -X POST -H "Accept: application/xml" -H "Content-Type: application/xml" [USER:PASS] https://[RHSC HOST]/api/clusters/44571c63-a110-4fba-9a8c-7b30446ba8bf/glustervolumes/380474af-360b-48fa-a210-9c08b913ffa3/bricks/migrate -d "<action><bricks><brick><name>host:brick_dir</name></brick></bricks></action>"
The API returns the following representation: 
<action>
    <bricks>
        <brick>
            <name>host:brick_dir</name>
        </brick>
    </bricks>
    <job href="/api/jobs/5d070f64-2f9b-44d7-8c44-64829355422d" id="5d070f64-2f9b-44d7-8c44-64829355422d"/>
    <status>
        <state>complete</state>
    </status>
</action>
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The status of remove brick (with data migration) is monitored using the job ID and its corresponding step ID by looking at the remove brick step. 
/api/jobs/<job_id>/steps
/api/jobs/<job_id>/steps/<step_id> --for step type remove brick
/api/jobs/<job_id>/steps/<step_id>/statistics -- for detail information of remove brick
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Now, you can delete the migrated bricks by issuing a DELETE request for a brick(s). 
DELETE /api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks
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cURL command:
curl -X DELETE -u [USER:PASS] https://[RHSC HOST]/api/clusters/99408929-82cf-4dc7-a532-9d998063fa95/glustervolumes/83101900-2f12-4855-838e-36b8a9e04554/bricks -d "<bricks><brick><name>host:brick_dir</brick></bricks>"
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