Recovery of nodes

Patent metadata

Field	Value
Publication number	US-10372556-B1
Application number	US-201615197857-A
Country	US
Kind code	B1
Filing date	Jun 30, 2016
Priority date	Jun 30, 2016
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

Embodiments of the present disclosure relate to a method, an apparatus and a computer program product of recovering from a failure of a first node within a data storage system by receiving notice from the data storage system that the first node has failed; and restoring the first node based on a heat map of data I/O activity to the first node.

First claim

What is claimed is:

1. A method of recovering from a failure of a first node within a data storage system, the method comprising:
receiving notice from the data storage system that the first node has failed; and
restoring the first node by creating a restored first node, from the data storage system, based on a heat map of data I/O activity to the first node, wherein the restored first node replaces the first node, wherein restoring the first node comprises:
analyzing the heat map to determine which portions of data are most active; and
restoring first the most active data to the restored first node.

2. The method according to claim 1 , wherein the restoring is enabled to be completed on a second node, wherein the second node is enabled to replace the first node within the data storage system.

3. The method according to claim 1 , further comprising creating the heat map for data I/O activity to the first node.

4. The method according to claim 3 , wherein the heat map includes monitoring each portion of data storage within the first node, wherein the monitoring is enabled to indicate a level of data I/O activity associated with an associated portion of data storage.

5. The method according to claim 1 , further comprising:
accessing the restored node during a recovery of the restored node.

6. A system recovering from a failure of a first node within a data storage system, comprising at least one hardware processor; and at least one memory comprising computer program codes, wherein the at least one memory and the computer program codes are configured, with the at least one processor, configured for:
receiving notice from the data storage system that the first node has failed; and
restoring the first node by creating a restored first node, from the data storage system, based on a heat map of data I/O activity to the first node, wherein the restored first node replaces the first node, wherein restoring the first node comprises:
analyzing the heat map to determine which portions of data are most active; and

restoring first the most active data to the restored first node.

7. The system according to claim 6 , wherein the restoring is enabled to be completed on a second node, wherein the second node is enabled to replace the first node within the data storage system.

8. The system according to claim 6 , further comprising creating the heat map for data I/O activity to the first node.

9. The system according to claim 8 , wherein the heat map includes monitoring each portion of data storage within the first node, wherein the monitoring is enabled to indicate a level of data I/O activity associated with an associated portion of data storage.

10. The system according to claim 6 , further comprising:
accessing the restored node during a recovery of the restored node.

11. A computer program product, the computer program product being embodied in a computer-readable non-transitory medium and includes a computer readable program instruction, and when being loaded into an apparatus, the computer-readable program instruction performs
receiving notice from the data storage system that the first node has failed; and
restoring the first node by creating a restored first node, from the data storage system, based on a heat map of data I/O activity to the first node, wherein the restored first node replaces the first node, wherein restoring the first node comprises:
analyzing the heat map to determine which portions of data are most active; and
restoring first the most active data to the restored first node.

12. The computer program product according to claim 11 , wherein the restoring is enabled to be completed on a second node, wherein the second node is enabled to replace the first node within the data storage system.

13. The computer program product according to claim 11 , further comprising creating the heat map for data I/O activity to the first node.

14. The computer program product according to claim 13 , wherein the heat map includes monitoring each portion of data storage within the first node, wherein the monitoring is enabled to indicate a level of data I/O activity associated with an associated portion of data storage.

15. The computer program product according to claim 11 , further comprising:
accessing the restored node during a recovery of the restored node.

Assignees

• Emc Corp
• EMC IP Holding Company

Inventors

• Baruch Leehod
• Natanzon Assaf
• Bigman Ron
• Shemer Jehuda
• Lieberman Amit

Classifications

• G06F2201/88

  Monitoring involving counting · CPC title

• G06F11/1662

  the resynchronized component or unit being a persistent storage device (re-synchronization of failed mirror storage G06F11/2082; rebuild or reconstruction of parity RAID storage G06F11/1008) · CPC title

• G06F11/1088

  Reconstruction on already foreseen single or plurality of spare disks · CPC title

• G06F11/3485

  for I/O devices · CPC title

• G06F11/3034

  where the computing system component is a storage system, e.g. DASD based or network based (digital input from or digital output to record carriers G06F3/06; digital recording or reproducing G11B20/18; for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097) · CPC title