System and method for event based storage management

Patent metadata

Field	Value
Publication number	US-11061602-B2
Application number	US-201916402199-A
Country	US
Kind code	B2
Filing date	May 2, 2019
Priority date	May 2, 2019
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A storage array for providing data storage services includes persistent storage and a storage array manager. The persistent storage stores data. The storage array manager obtains a request for solicited data using a request queue corresponding to a requesting host; responds, based on the solicited data, to the request using a response queue corresponding to the requesting host; makes a determination that the request implicates multiple hosts; and in response to the determination: distributes unsolicited data, based on the request, to the multiple hosts using the data stored in the persistent storage.

First claim

What is claimed is:

1. A storage array for providing data storage services, comprising:
persistent storage for storing data; and
a storage array manager programmed to:
obtain a request for solicited data using a request queue corresponding to a requesting host;
respond, based on the solicited data, to the request using a response queue corresponding to the requesting host;
make a determination that the request implicates multiple hosts; and
in response to the determination:
identify a portion of the data, for which the storage array provides the data storage services and is unsolicited data, that is relevant to the request to identify relevant data;
make a second determination that the relevant data can be sent to the multiple hosts via event data queues associated with the multiple hosts; and
provide the relevant data to the multiple hosts using the event data queues associated with the multiple hosts in response to the second determination.

2. The storage array of claim 1 , wherein the storage array manager is further programmed to:
obtain a second request for solicited data using the request queue corresponding to the requesting host;
respond, based on the solicited data, to the second request using the response queue corresponding to the requesting host;
make a third determination that the second request implicates multiple hosts; and
in response to the third determination:
identify second a portion of the data, for which the storage array provides the data storage services, that is relevant to the request to identify second relevant data;
make a fourth determination that the second relevant data cannot be sent to the multiple hosts via the event data queues associated with the multiple hosts; and
in response to the fourth determination:
generate an event that indicates that the second relevant data is available; and
provide the event to the multiple hosts via corresponding event queues.

3. The storage array of claim 2 , wherein the storage array manager is further programmed to:
obtain, using request queues corresponding to the multiple hosts, requests for the second relevant data; and
provide the second relevant data to the multiple hosts without using the event data queues.

4. The storage array of claim 1 , wherein the request implicates the multiple hosts when the request is associated with a portion of the data that is relevant to the multiple hosts.

5. The storage array of claim 1 , wherein the solicited data is not provided to the requesting host when the storage array manager responds, based on the solicited data, to the request using the response queue corresponding to the requesting host.

6. The storage array of claim 5 , wherein the unsolicited data comprises the solicited data.

7. The storage array of claim 1 , wherein the multiple hosts comprises the requesting host.

8. The storage array of claim 1 , wherein the solicited data is provided to the requesting host when the storage array manager responds, based on the solicited data, to the request using the response queue corresponding to the requesting host.

9. The storage array of claim 1 , wherein the multiple hosts do not include the requesting host.

10. A method for providing data storage services, comprising:
obtaining a request for solicited data using a request queue corresponding to a requesting host;
responding, based on the solicited data, to the request using a response queue corresponding to the requesting host;
making a determination that the request implicates multiple hosts; and
in response to the determination:
identifying a portion of the data, for which a storage array provides the data storage services and is unsolicited data, that is relevant to the request to identify relevant data;
making a second determination that the relevant data can be sent to the multiple hosts via event data queues associated with the multiple hosts; and
providing the relevant data to the multiple hosts using the event data queues associated with the multiple hosts in response to the second determination.

11. The method of claim 10 , further comprising:
obtaining a second request for solicited data using the request queue corresponding to the requesting host;
responding based on the solicited data, to the second request using the response queue corresponding to the requesting host;
making a third determination that the second request implicates multiple hosts; and
in response to the third determination:
identifying a second portion of the data, for which the storage array provides the data storage services, that is relevant to the request to identify second relevant data;
making a fourth determination that the second relevant data cannot be sent to the multiple hosts via the event data queues associated with the multiple hosts; and
in response to the fourth determination:
generating an event that indicates that the second relevant data is available; and
providing the event to the multiple hosts via corresponding event queues.

12. The method of claim 11 , further comprising:
obtaining, using request queues corresponding to the multiple hosts, requests for the relevant data; and
providing the second relevant data to the multiple hosts without using the event data queues.

13. The method of claim 10 , wherein the request implicates the multiple hosts when the request is associated with a portion of the data that is relevant to the multiple hosts.

14. A non-transitory computer readable medium comprising computer readable program code, which when executed by a computer processor enables the computer processor to perform a method for providing data storage services, the method comprising:
obtaining a request for solicited data using a request queue corresponding to a requesting host;
responding, based on the solicited data, to the request using a response queue corresponding to the requesting host;
making a determination that the request implicates multiple hosts; and
in response to the determination:
identifying a portion of the data, for which a storage array provides the data storage services and is unsolicited data, that is relevant to the request to identify relevant data;
making a second determination that the relevant data can be sent to the multiple hosts via event data queues associated with the multiple hosts; and
providing the relevant data to the multiple hosts using the event data queues associated with the multiple hosts in response to the second determination.

15. The non-transitory computer readable medium of claim 14 , wherein the method further comprises:
obtaining a second request for solicited data using the request queue corresponding to the requesting host;
responding, based on the solicited data, to the second request using the response queue corresponding to the requesting host;
making a third determination that the second request implicates multiple hosts; and
in response to the third determination:
identifying a second portion of the data, for which the storage array provides the data storage services, that is relevant to the request to identify second relevant data;
making a fourth determination that the second relevant data cannot be sent to the multiple hosts via the event data queues associated with the multiple hosts; and
in response to the fourth determination:
generating an event that indicates that the second relevant data is available; and
providing the event to the multiple hosts via corresponding event queues.

16. The non-transitory computer readable medium of claim 15 , wherein the method further comprises:
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Assignees

• Emc Ip Holding Co Llc

Inventors

• Krasner Jonathan I
• Kinney Daryl Francis
• Hatstat William Alan

Classifications

• G06F3/0611

  in relation to response time · CPC title

• G06F3/0659 Primary

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

• G06F3/067

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G06F3/065 Primary

  Replication mechanisms · CPC title

• G06F3/0689

  Disk arrays, e.g. RAID, JBOD · CPC title