Identification of storage to acquire to maintain the intent of logical volumes

A system comprising:

• first determining means for determining a first specification for a first set of needed storage regions, wherein
• the determining is performed in response to receiving a request to perform an operation on a logical volume, wherein the logical volume is created before the request to perform an operation is received,
• the first specification is based on an intent for the logical volume and the operation,
• the first set of needed storage regions is needed to perform the operation on the logical volume, and
• the first set of needed storage regions satisfies the intent of the logical volume, wherein the intent comprises an intended configuration for implementing the logical volume, and a rule is a portion of the intent associated with the logical volume,
• searching means for searching a plurality of existing storage regions for a corresponding existing storage region for each needed storage region in the first set of needed storage regions, and
• second determining means for determining a second specification for a second set of storage regions to be acquired if no existing storage region is found corresponding to a first needed storage region in the first set of needed storage regions, wherein
• the second set of storage regions is needed to perform the operation on the logical volume;
• and
• a processor, coupled to control and configured to perform the functions of the first determining, searching and second determining means.

A system comprising:

• a first determining module configured to determine a first specification for a first set of needed storage regions, wherein
• the determining is performed in response to receiving a request to perform an operation on a logical volume, wherein the logical volume is created before the request to perform an operation is received,
• the first specification is based on an intent for the logical volume and the operation,
• the first set of needed storage regions is needed to perform the operation on the logical volume, and
• the first set of needed storage regions satisfies the intent of the logical volume, wherein the intent comprises an intended configuration for implementing the logical volume, and a rule is a portion of the intent associated with the logical volume,
• a searching module configured to search a plurality of existing storage regions for a corresponding existing storage region for each needed storage region in the first set of storage regions, and
• a second determining module configured to determine a second specification for a second set of storage regions to be acquired if no existing storage region is found corresponding to a first needed storage region in the first set of needed storage regions, wherein
• the second set of storage regions is needed to perform the operation on the logical volume;
• and
• a processor, coupled to control and configured to perform the functions of the stored modules.

A computer-readable storage medium, wherein the storage medium is not a signal, comprising:

• first determining instructions configured to determine a first specification for a first set of needed storage regions, wherein
• the determining is performed in response to receiving a request to perform an operation on a logical volumes wherein the logical volume is created before the request to perform an operation is received,
• the first specification is based on an intent for the logical volume and the operation,
• the first set of needed storage regions is needed to perform the operation on the logical volume, and
• the first set of needed storage regions satisfies the intent of the logical volume, wherein the intent comprises an intended configuration for implementing the logical volume, and a rule is a portion of the intent associated with the logical volume;
• searching instructions configured to search a plurality of existing storage regions for a corresponding existing storage region for each needed storage region in the first set of needed storage regions;
• and
• second determining instructions configured to determine a second specification for a second set of storage regions to be acquired if no existing storage region is found corresponding to a first needed storage region in the first set of needed storage regions, wherein
• the second set of storage regions is needed to perform the operation on the logical volume.