Granted Patent B2

US 12,737,111 · App. 18/611,860 · Granted Sep 15, 2026

Inventors: Sanjib Mallick (Bangalore, IN); Vinay G. Rao (Bangalore, IN); Yevgeni Gehtman (Modi'in, IL); Tomer Shachar (Beer-Sheva, IL); Arieh Don (Newton, MA)

Assignee: Dell Products L.P.

G06F3/0604G06F3/0623G06F3/0635G06F3/0641G06F3/067

Abstract

Claims (49)

1 . An apparatus comprising:

at least one processing device comprising a processor coupled to a memory;

the at least one processing device being configured:

to obtain in a host device deduplication information relating to a logical storage device of a storage system, wherein the host device comprises acceleration resources and is configured to communicate with the storage system over at least one network, wherein obtaining the deduplication information in the host device comprises the host device requesting the deduplication information from the storage system and receiving the deduplication information from the storage system in response to the request, the deduplication information being stored by the storage system in a storage-side data structure in association with an identifier of the logical storage device and comprising one or more statistical measures characterizing results of one or more deduplication operations previously performed in the storage system for at least a subset of a plurality of data blocks of the logical storage device; and

to determine based at least in part on the obtained deduplication information whether to compute a content-based signature for one or more of the plurality of data blocks of the logical storage device utilizing the acceleration resources of the host device, wherein utilization of the acceleration resources of the host device is controlled by the host device based at least in part on the obtained deduplication information comprising the one or more statistical measures characterizing the results of the one or more deduplication operations previously performed in the storage system;

wherein responsive to an affirmative result of the determining, the content-based signature is computed utilizing the acceleration resources of the host device and sent by the host device to the storage system in association with a given write operation that targets the one or more data blocks of the logical storage device; and

wherein responsive to a negative result of the determining, the content-based signature is not computed utilizing the acceleration resources of the host device and the given write operation is sent by the host device to the storage system without the content-based signature.

2 . The apparatus of claim 1 wherein the at least one processing device comprises at least the host device.

3 . The apparatus of claim 1 wherein the acceleration resources comprise at least one of one or more graphics processing units (GPUs) and one or more data processing units (DPUs) implemented within the host device.

4 . The apparatus of claim 1 wherein the content-based signature is computed for the one or more data blocks of the logical storage device by applying a secure hashing algorithm to the one or more data blocks.

5 . The apparatus of claim 1 wherein the at least one processing device is further configured:

to send a designated command from the host device to the storage system to obtain in response thereto from the storage system an indication as to whether or not the storage system supports leveraging of the acceleration resources of the host device to compute the content-based signature; and

to initiate the determining based at least in part on the obtained indication.

6 . The apparatus of claim 1 wherein the at least one processing device is further configured:

to send a designated command from the host device to the storage system to obtain in response thereto from the storage system an indication as to a particular deduplication process utilized by the storage system for the logical storage device; and

to initiate the determining based at least in part on the obtained indication.

7 . The apparatus of claim 1 wherein the deduplication information comprises at least a deduplication rate for at least a portion of the logical storage device.

8 . The apparatus of claim 7 wherein determining based at least in part on the obtained deduplication information whether to compute the content-based signature for the one or more data blocks of the logical storage device utilizing the acceleration resources of the host device comprises:

comparing the deduplication rate to a threshold;

responsive to the deduplication rate being at or above the threshold, reaching the affirmative result of the determining; and

responsive to the deduplication rate being below the threshold, reaching the negative result of the determining.

9 . The apparatus of claim 1 wherein obtaining in the host device the deduplication information relating to the logical storage device comprises sending a designated command from the host device to the storage system to obtain the deduplication information from the storage system in response to the designated command.

10 . The apparatus of claim 1 wherein the content-based signature is sent from the host device to the storage system in a header of the given write operation.

11 . The apparatus of claim 10 wherein a payload of the given write operation comprises the one or more data blocks from which the content-based signature in the header was computed utilizing the acceleration resources of the host device.

12 . The apparatus of claim 1 wherein a header of the given write operation includes an indication as to whether or not acceleration resources of the host device have been utilized to compute the content-based signature.

13 . The apparatus of claim 1 wherein a header of the given write operation includes a plurality of content-based signatures computed utilizing the acceleration resources of the host device for respective different sets of one or more data blocks of the logical storage device that are targeted by the given write operation.

14 . The apparatus of claim 1 wherein the storage system is configured:

to determine whether or not the content-based signature received from the host device in association with the given write operation is recognized by the storage system as corresponding to an existing content-based signature already present in the storage system; and

responsive to the content-based signature not being recognized by the storage system, to obtain the one or more data blocks from the given write operation and to store the one or more data blocks in association with the content-based signature.

15 . A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code, when executed by at least one processing device comprising a processor coupled to a memory, causes the at least one processing device:

to obtain in a host device deduplication information relating to a logical storage device of a storage system, wherein the host device comprises acceleration resources and is configured to communicate with the storage system over at least one network, wherein obtaining the deduplication information in the host device comprises the host device requesting the deduplication information from the storage system and receiving the deduplication information from the storage system in response to the request, the deduplication information being stored by the storage system in a storage-side data structure in association with an identifier of the logical storage device and comprising one or more statistical measures characterizing results of one or more deduplication operations previously performed in the storage system for at least a subset of a plurality of data blocks of the logical storage device; and

to determine based at least in part on the obtained deduplication information whether to compute a content-based signature for one or more of the plurality of data blocks of the logical storage device utilizing the acceleration resources of the host device, wherein utilization of the acceleration resources of the host device is controlled by the host device based at least in part on the obtained deduplication information comprising the one or more statistical measures characterizing the results of the one or more deduplication operations previously performed in the storage system;

wherein responsive to an affirmative result of the determining, the content-based signature is computed utilizing the acceleration resources of the host device and sent by the host device to the storage system in association with a given write operation that targets the one or more data blocks of the logical storage device; and

wherein responsive to a negative result of the determining, the content-based signature is not computed utilizing the acceleration resources of the host device and the given write operation is sent by the host device to the storage system without the content-based signature.

16 . The computer program product of claim 15 wherein the deduplication information comprises at least a deduplication rate for at least a portion of the logical storage device, and further wherein determining based at least in part on the obtained deduplication information whether to compute the content-based signature for the one or more data blocks of the logical storage device utilizing the acceleration resources of the host device comprises:

comparing the deduplication rate to a threshold;

responsive to the deduplication rate being at or above the threshold, reaching the affirmative result of the determining; and

responsive to the deduplication rate being below the threshold, reaching the negative result of the determining.

17 . The computer program product of claim 15 wherein the content-based signature is sent from the host device to the storage system in a header of the given write operation.

18 . A method comprising:

obtaining in a host device deduplication information relating to a logical storage device of a storage system, wherein the host device comprises acceleration resources and is configured to communicate with the storage system over at least one network, wherein obtaining the deduplication information in the host device comprises the host device requesting the deduplication information from the storage system and receiving the deduplication information from the storage system in response to the request, the deduplication information being stored by the storage system in a storage-side data structure in association with an identifier of the logical storage device and comprising one or more statistical measures characterizing results of one or more deduplication operations previously performed in the storage system for at least a subset of a plurality of data blocks of the logical storage device; and

determining based at least in part on the obtained deduplication information whether to compute a content-based signature for one or more of the plurality of data blocks of the logical storage device utilizing the acceleration resources of the host device, wherein utilization of the acceleration resources of the host device is controlled by the host device based at least in part on the obtained deduplication information comprising the one or more statistical measures characterizing the results of the one or more deduplication operations previously performed in the storage system;

wherein responsive to an affirmative result of the determining, the content-based signature is computed utilizing the acceleration resources of the host device and sent by the host device to the storage system in association with a given write operation that targets the one or more data blocks of the logical storage device; and

wherein responsive to a negative result of the determining, the content-based signature is not computed utilizing the acceleration resources of the host device and the given write operation is sent by the host device to the storage system without the content-based signature.

19 . The method of claim 18 wherein the deduplication information comprises at least a deduplication rate for at least a portion of the logical storage device, and further wherein determining based at least in part on the obtained deduplication information whether to compute the content-based signature for the one or more data blocks of the logical storage device utilizing the acceleration resources of the host device comprises:

comparing the deduplication rate to a threshold;

responsive to the deduplication rate being at or above the threshold, reaching the affirmative result of the determining; and

responsive to the deduplication rate being below the threshold, reaching the negative result of the determining.

20 . The method of claim 18 wherein the content-based signature is sent from the host device to the storage system in a header of the given write operation.

Assignments (1)

Continuity (1)

References Cited (141)