Logical block addresses used for executing host commands

Patent metadata

Field	Value
Publication number	US-9542122-B2
Application number	US-201414522160-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	Oct 23, 2014
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A logical block address space of a storage compute device is reserved for use in executing commands from a host. The logical block address space is not mapped to a physical address space. First data is received at a first portion of the logical block address space, the first data causing a computation to be performed by the storage compute device. Second data is sent to the host via a second portion of the logical block address space, the second data describing a result of the computation.

First claim

What is claimed is:

1. A storage compute device, comprising:
a host interface that receives storage commands from a host that utilize logical block addresses; and
a processing unit coupled to the host interface, the processing unit configured to:
reserve a logical block address space used by the host interface, the logical block address space not being mapped to a physical address space of a non-volatile memory unit of the storage compute device;
receive first data at a first portion of the logical block address space, the first data causing a computation to be performed by a computation engine of the storage compute device; and
send second data to the host via a second portion of the logical block address space, the second data describing a result of the computation.

2. The storage compute device of claim 1 , wherein the first data comprises a command that causes the computation, the command written to a first starting address of the logical block address space.

3. The storage compute device of claim 2 , wherein the command references a compute object stored on the storage compute device, the compute object performing the computation.

4. The storage compute device of claim 2 , wherein the first data comprises metadata of one or more data objects used in the computation, the metadata written to a second starting address of the logical block address space.

5. The storage compute device of claim 4 , wherein data of one or more data objects are written to the second starting address.

6. The storage compute device of claim 4 , wherein data of the one or more data objects are written to a second logical block address space of the storage compute device used for legacy storage operations.

7. The storage compute device of claim 1 , wherein the first data is received using a legacy command set used for reading and writing data to the storage compute device.

8. A system comprising:
a host processor; and
at least one storage compute device comprising: a host interface coupled to the host processor via a data bus; a computation engine; a data storage section; and a controller coupled to the host interface, the data storage section, and the computation engine, the controller configured to:
reserve a logical block address space used by the host interface, the logical block address space not being mapped to a physical address space of the data storage section;
receive first data at a first portion of the logical block address space from the host processor, the first data causing a computation to be performed by the computation engine; and
send second data to the host processor via a second portion of the logical block address space, the second data describing a result of the computation.

9. The system of claim 8 , wherein the first data comprises a command causing the computation and metadata of one or more data objects used in the computation, the command written to a first starting address of the logical block address space and the metadata written to a second starting address of the logical block address space.

10. The system of claim 9 , wherein the command references a compute object stored on the storage compute device, the compute object performing the computation.

11. The system of claim 7 , wherein the at least one storage compute device comprises a plurality of storage compute devices, and wherein the computation is distributed among the plurality of storage compute devices.

12. The system of claim 7 , further comprising a network interface capable of being coupled to a network node comprising a remote storage compute device, and wherein the host processor is configured to send, via the network, third data to a reserved logical block address space of the remote storage compute device, the third data causing a second computation to be performed by the remote storage compute device.

13. A processor-implemented method comprising:
reserving a logical block address space of a storage compute device for use in executing commands from a host, the logical block address space not being mapped to a physical address space;
receiving first data at a first portion of the logical block address space, the first data causing a computation to be performed by the storage compute device; and
sending second data to the host via a second portion of the logical block address space, the second data describing a result of the computation.

14. The method of claim 13 , wherein the first data comprises a command that causes the computation, the command written to a first starting address of the logical block address space.

15. The method of claim 14 , wherein the command references a compute object stored on the storage compute device, the compute object performing the computation.

16. The method of claim 14 , wherein the first data comprises metadata of one or more data objects used in the computation, the metadata written to a second starting address of the logical block address space.

17. The method of claim 16 , wherein data of one or more data objects are written to the second starting address.

18. The method of claim 16 , wherein data of the one or more data objects are written to a second logical block address space of the storage compute device used for legacy storage operations.

19. The method of claim 1 , wherein the first data is received using a legacy command set used for reading and writing data to the storage compute device.

20. The method of claim 19 , wherein a second logical address space of the storage compute device is used for legacy storage operations via the legacy command set.

Assignees

• Seagate Technology Llc

Inventors

• Bohn Richard Esten
• Li Peng
• Tetzlaff David

Classifications

• G06F13/4282

  on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247) · CPC title

• G06F3/0604

  Improving or facilitating administration, e.g. storage management · CPC title

• G06F3/064

  Management of blocks · CPC title

• G06F3/0659 Primary

  Command handling arrangements, e.g. command buffers, queues, command scheduling · CPC title

• G06F3/0685

  Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays · CPC title