Deleting Thin Image Advanced pairs

Thin Image Advanced User Guide
Version
9.8.6
Audience
anonymous
Part Number
MK-98RD9033-00
Delete Thin Image Advanced pairs when you do not need them or when you want to delete snapshot data using the CCI raidcom delete snapshot command.

When you delete a pair, the status of the P-VOL and the S-VOL changes to SMPP/SMPL(PD) and they are unpaired. When volumes are unpaired, they do not appear in the list of pairs displayed by the raidcom get snapshot command. After the deletion, you can use the volume previously used as the S-VOL in other pairs. You cannot create pairs in the SMPP/SMPL(PD) status, and you cannot assign an S-VOL to snapshot data, or cancel or change the assignment.

After deleting a Thin Image Advanced pair, the number of pairs shown in the summary section in the Local Replication window and in the list on the TI Root Volumes tab can be different. Wait until the configuration has completed processing. If the numbers do not match, reload the configuration information.

If the amount of snapshot data in selected P-VOLs or the total number of pairs in selected snapshot groups exceeds 32,768, an error message appears when attempting to perform pair tasks.

You cannot delete snapshot data of all layers in the snapshot tree specified with the root volume by specifying -range tree.

The pages allocated to the S-VOL of the pair are not released even if you perform this task. Therefore, when you view the capacity of the pages allocated to the S-VOL after performing this task, you might find that the value is not zero. To release the pages allocated to the S-VOL, format the S-VOL after performing this task. Also, if you plan to use the volume as a volume other than the Thin Image Advanced S-VOL, format the S-VOL after performing this task.

  • You must have the Storage Administrator (Local Copy) role.
  • The Thin Image Advanced pair must be suspended ("PSUE" status), paired ("PAIR" status), or split ("PSUS" status).

Deleting pairs using CCI commands

The following is an example of deleting snapshot data and a pair in the snapshot group (db1):

raidcom delete snapshot -snapshotgroup db1

The following is an example of deleting snapshot data of a P-VOL (LDEV number 10:10) of MU number 10 and the pair containing the P-VOL:

raidcom delete snapshot -ldev_id 0x1010 -mirror_id 10

The following is an example of deleting snapshot data of a volume (LDEV number 10:10) in the snapshot group (db1) and the pair containing the volume:

raidcom delete snapshot -ldev_id 0x1010 -snapshotgroup db1

The following is an example of deleting snapshot data of an S-VOL (LDEV number 20:10) and the pair containing the S-VOL:

raidcom delete snapshot -ldev_id 0x2010

Deleting pairs using HDvM - SN

  1. In the Explorer pane, click Storage Systems, expand the storage system tree, expand Replication, and then click Local Replication.
  2. In the Local Replication window, select a P-VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab.
  3. Click Operate TI Pairs.
  4. In the TI Pairs window, select the pair you want to delete, and then click More Actions > Delete Pairs.
    You can specify P-VOLs in Device Manager - Storage Navigator until the total number of snapshots reaches 32,768. In addition, you can specify snapshot groups until the total number of pairs reaches 32,768. For cascaded pairs with layers, specify pairs at the lowest layer, and then higher layers.
  5. In the Delete Pairs window, confirm the settings.
  6. Accept the default task name or enter a unique name.
    You can enter up to 32 letters, numbers, and symbols, except the following:

    \ / : , ; * ? " < > |

  7. If you want to monitor the task after submitting it, select Go to tasks window for status.
  8. Click Apply to submit the task.
The pair deletion process begins ("SMPP/SMPL(PD)" status), and then the pair is deleted.