Migration methods for image mode volumes
Several methods can be used to migrate image mode volumes into managed mode volumes.
About this task
To complete any type of migration on an image mode volume, the image mode volume must first be converted into a managed mode volume. The volume is automatically converted into a managed mode volume whenever any kind of migration activity is attempted. After the image-mode-to-managed-mode migration occurs, the volume becomes a managed mode volume and is treated the same way as any other managed mode volume.
If the image mode disk has a partial last extent, this last extent in the image mode volume must be the first to be migrated. This migration is processed as a special case. After this special migration operation occurs, the volume becomes a managed mode volume and is treated in the same way as any other managed mode volume. If the image mode disk does not have a partial last extent, no special processing is completed. The image mode volume is changed into a managed mode volume and is treated the same way as any other managed mode volume.
An image mode disk can also be migrated to another image mode disk. The image mode disk becomes managed while the migration is ongoing, but returns to image mode when the migration is complete.
- Migrate extents
- Migrate a volume
- Migrate to image mode
Complete the following steps to migrate volumes:
Procedure
- Dedicate one storage pool to image mode volumes. Ensure that the pool that you select is not a child pool.
- Dedicate one storage pool to managed mode volumes.
- Use the migrate volume function to move the volumes.