Creation of logical units via borrowing of alternative storage and subsequent movement of the logical units to desired storage

摘要

A computational device receives a request to create a logical unit. In response to determining that adequate space is not available to create the logical unit in a first type of storage pool, a determination is made as to whether a first indicator is configured to allow borrowing of storage space from a second type of storage pool. In response to determining that the first indicator is configured to allow borrowing of storage space from the second type of storage pool, the logical unit is created in the second type of storage pool The logical unit is moved from the second type of storage pool to the first type of storage pool, in response to determining that free space that is adequate to store the logical unit has become available in the first type of storage pool.

主权项

1. A method, comprising:
maintaining, in a computational device, a first indicator that is configurable to indicate whether storage space can be borrowed from an alternate type of storage pool, and a second indicator that is configurable to indicate whether the alternate type of storage pool can be used for logical unit creation; in response to determining that adequate space is not available to create a logical unit in a first type of storage pool and the first indicator is configured to allow borrowing of storage space from a second type of storage pool, creating the logical unit in the second type of storage pool; and subsequent to creating the logical unit in the second type of storage pool, moving the logical unit from the second type of storage pool to the first type of storage pool, in response to determining that free space that is adequate to store the logical unit has become available in the first type of storage pool.