Chapter 14. Managing block devices using the Ceph dashboard

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, click Create.
3. In the Create RBD form, fill in the form.
4. Optional: Click Advanced to set advanced parameters, such as Striping and Quality of Service.

5. Click Create RBD.

   A notification displays that the image was created successfully.

   Figure 14.1. Create Block device image

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Namespaces tab, click Create.
3. In the Create Namespace dialog, select the pool and enter a name for the namespace.

4. Click Create.

   A notification displays that the namespace was created successfully.

   Figure 14.2. Create namespace

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, select the image to edit, and click Edit.

3. In the Edit RBD form, edit the required parameters and click Edit RBD.

   A notification displays that the image was updated successfully.

   Figure 14.3. Edit Block device image

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, select the image to copy, and click Copy from the action drop-down.

3. In the Copy RBD form, set the required parameters and click Copy RBD.

   A notification displays that the image was copied successfully.

   Figure 14.4. Copy Block device image

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, select the image to move to trash, and click Move to Trash from the action drop-down.

3. In the Move an image to trash dialog, change the Protection expires at field and click Move.

   A notification displays that the image was moved to trash successfully.

   Figure 14.5. Moving images to trash

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Trash tab, click Purge Trash.

3. In the Purge Trash dialog, select the pool, and click Purge Trash.

   A notification displays that the pools in the trash were purged successfully.

   Figure 14.6. Purge trash

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Trash tab, select the row of the image to restore.
3. Click Restore in the action drop-down.

4. In the Restore Image dialog, enter the new name of the image and click Restore.

   A notification displays that the image was restored successfully.

   Figure 14.7. Restore images from trash

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. Select the row to be deleted and click Delete from the action drop-down.

3. In the Delete RBD notification, select Yes, I am sure and click Delete RBD.

   A notification displays that the image was deleted successfully.

   Figure 14.8. Deleting images

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Namespaces tab, select the namespace and click Delete from the action drop-down.

3. In the Delete Namespace notification, select Yes, I am sure and click Delete Namespace.

   A notification displays that the namespace was deleted successfully.

   Figure 14.9. Deleting namespaces

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row.
3. In the Snapshots tab, click Create.

4. In the Create RBD Snapshot dialog, enter the snapshot name and click Create RBD Snapshot.

   A notification displays that the snapshot was created successfully.

   Figure 14.10. Creating snapshot of images

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row.
3. In the Snapshots tab, click Rename.
4. In the Rename RBD Snapshot dialog, enter the new name and click Rename RBD Snapshot.

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row and click on the Snapshots tab.

3. Select the snapshot to protect, and click Protect from the action drop-down.

   The snapshot updates and the State changes from Unprotected to Protected.

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row.
3. In the Snapshots tab, select the snapshot to clone and click Clone from the action drop-down.

4. In the Clone RBD form, fill in the required details and click Clone RBD.

   A notification displays that the snapshots was cloned successfully and the new image displays in the Images table.

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row.
3. In the Snapshots tab, select the snapshot to clone and click Copy from the action drop-down.

4. In the Copy RBD form, fill in the required details and click Copy RBD.

   A notification displays that the snapshots was cloned successfully and the new image displays in the Images table.

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row and click on the Snapshots tab.

3. Select the protected snapshot, and click Unprotect from the action drop-down.

   The snapshot updates and the State changes from Protected to Unprotected*.

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row and click on the Snapshots tab.
3. Select the snapshot to rollback, and click Rollback from the action drop-down.

4. In the RBD snapshot rollback dialog, click Rollback.

   Figure 14.11. Rolling back snapshot of images

   

Procedure

1. From the dashboard navigation, go to Block→Images.
2. From the Images tab, expand an image row.
3. In the Snapshots tab, select the snapshot to delete and click Delete from the action drop-down.

4. In the Delete RBD Snapshot dialog, select Yes, I am sure and click Delete RBD Snapshot.

   A notification displays that the snapshot was created successfully.

1. From the dashboard navigation, go to Block Mirroring and click Create Bootstrap Token.
2. From the Navigation menu, click the Block drop-down menu, and click Mirroring.

3. Click Create Bootstrap Token and configure the following in the window:

   Figure 14.13. Create bootstrap token

   
   1. For the provided site name, select the pools to be mirrored.
   2. For the selected pools, generate a new bootstrap token by clicking Generate.
   3. Click Copy to Clipboard.
   4. Click Close.

4. Enable the pool mirror mode.

   1. Select the pool.
   2. Click Edit Mode.
   3. In the Edit pool mirror mode dialog, select Image from the Mode list.

   4. Click Update.

      A notification displays that the pool was updated successfully.

1. From the dashboard navigation, go to Block Mirroring and click Import Bootstrap Token from the action drop-down.

   Note

   Ensure that mirroring mode is enabled for the specific pool for which you are importing the bootstrap token.

2. In the Import Bootstrap Token dialog, select the direction, and paste the token copied earlier, from site A.

   Figure 14.14. Import bootstrap token

   

3. Click Submit.

   The peer is added and the images are mirrored in the cluster at site B.

4. On the Block Mirroring page, in the Pool table, verify the health of the pool is in the OK state.

1. Create an image with Mirroring enabled.

   1. From the dashboard navigation, go to Block Images.
   2. On the Images tab, click Create.
   3. In the Create RBD form, fill in the Name and Size.

   4. Select Mirroring.

      Note

      Select mirroring with either Journal or Snapshot.

   5. Click Create RBD.

      Figure 14.15. Create mirroring image

      

2. Verify the image is available at both the sites.

   1. From the Images table, verify that the image in site A is set to primary and that the image in site B is set to secondary.

Procedure

1. From the dashboard navigation, go to Block→Mirroring.
2. From the Pools table, select the pool to edit and click Delete Peer from the action drop-down.

3. In the Delete mirror peer dialog, select Yes, I am sure and click Delete mirror peer.

   A notification displays that the peer deleted successfully.

   Figure 14.17. Delete peer in mirroring