US 11,385,822 B2 · Moving data from a first group of slices to a second group of slices

Abstract

Techniques for processing data involve: receiving a request for moving data from a first slice group in a first logical unit to a second logical unit; determining, based on the request, a second slice group from the second logical unit, the size of the second slice group being larger than or equal to the size of the first slice group; and moving data in the first slice group into the second slice group. Such techniques enable moving data into slices in a specified address range in a specified logical unit, moving data into appropriate slices in a target logical unit when data cannot be moved to slices in a specific address range because an address range is not specified or a specified address range is unavailable can be achieved, and moving disk extents (DEs) by a Redundant Array of Multi-Core Disks (MCR) and redistributing IOs between disk extents.

Claims19

Dependent claims

A method for processing data, the method comprising:

receiving a request for moving data from a first group of slices in a first logical unit to a second logical unit;
determining, based on the request, a second group of slices from the second logical unit, the size of the second group of slices being larger than or equal to the size of the first group of slices;
and
moving data in the first group of slices into the second group of slices;
wherein determining the second group of slices comprises:
determining, based on the request, the size of the first group of slices;
determining that the request does not specify an address range associated with multiple slices in the second logical unit;
and
in response to determining that the request does not specify the address range, determining, based on the size of the first group of slices, the second group of slices from the second logical unit.

6 more elements

A device for processing data, comprising:

at least one processing unit;
at least one memory, coupled to the at least one processing unit and storing instructions executed by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform acts, including:
receiving a request for moving data from a first group of slices in a first logical unit to a second logical unit;
determining, based on the request, a second group of slices from the second logical unit, the size of the second group of slices being larger than or equal to the size of the first group of slices;
and
moving data in the first group of slices into the second group of slices;
wherein determining the second group of slices comprises:
determining, based on the request, the size of the first group of slices;
determining whether the request specifies an address range associated with multiple slices in the second logical unit;
and
in response to determining that the request specifies the address range, determining, based on the size of the first group of slices, the second group of slices from the multiple slices;
and
in response to determining that the request does not specify the address range, determining, based on the size of the first group of slices, the second group of slices from the second logical unit.

10 more elements

A computer program product having a non-transitory computer readable medium which stores a set of instructions to process data;

the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
receiving a request for moving data from a first group of slices in a first logical unit to a second logical unit;
determining, based on the request, a second group of slices from the second logical unit, the size of the second group of slices being larger than or equal to the size of the first group of slices;
and
moving data in the first group of slices into the second group of slices;
wherein determining the second group of slices comprises:
determining, based on the request, the size of the first group of slices;
determining whether the request specifies an address range associated with multiple slices in the second logical unit;
and
in response to determining that the request specifies the address range, determining, based on the size of the first group of slices, the second group of slices from the multiple slices;
and
in response to determining that the request does not specify the address range, determining, based on the size of the first group of slices, the second group of slices from the second logical unit.

9 more elements

Dependencies are inferred from the claim text.

Moving data from a first group of slices to a second group of slices

Life of this patent

Moving data from a first group of slices to a second group of slices

Life of this patent

Abstract

Claims19