Mapping of data storage system for a redundant array of independent nodes

Patent metadata

Field	Value
Publication number	US-11435916-B2
Application number	US-201916453774-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Jun 26, 2019
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

Described herein, system that facilitates mapping of redundant array of independent nodes of a storage device. According to an embodiment, a system can comprise generating a first configuration of a storage cluster, wherein the storage cluster comprises a group of nodes and a group of disks, generating a second configuration of the storage cluster using the first configuration, wherein the group of nodes are divided into a first pair of nodes comprising a first node having access to a first group of disks and a second node having access to a second group of disks, and generating a third configuration of the storage cluster using the second configuration, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and enables access to the second group of disks of the second node.

First claim

What is claimed is:

1. A system, comprising:
a processor; and
a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
generating a first configuration of a storage cluster, wherein the storage cluster comprises a group of nodes and a group of disks;
generating a second configuration of the storage cluster using the first configuration, wherein the group of nodes are divided into a first pair of nodes comprising a first node having access to a first group of disks and a second node having access to a second group of disks; and
generating a third configuration of the storage cluster using the second configuration, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and enables access to the second group of disks of the second node, wherein the first mapped node operates on a third node that is separate from the first node and from the second node, wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

2. The system of claim 1 , wherein the generating the second configuration further comprises dividing the storage cluster into a second pair of nodes comprising a fifth node having access to a third group of disks and a sixth node having access to a fourth group of disks.

3. The system of claim 2 , wherein the generating the third configuration further comprises a third mapped node associated with the fifth node that manages the third group of disks and enables access to the fourth group of disks of the sixth node.

4. The system of claim 3 , wherein the operations further comprise:
detecting an access failure of the first mapped node; and
in response to the detecting the access failure of the first mapped node, using the second mapped node to access the first group of disks.

5. The system of claim 4 , wherein the operations further comprise:
in response to the detecting the access failure of the first mapped node, using the second mapped node to access the second group of disks.

6. The system of claim 3 , wherein the operations further comprise:
detecting an access failure of the first mapped node; and
in response to the detecting the access failure of the first mapped node, using the second mapped node to access the second group of disks.

7. The system of claim 3 , wherein the second mapped node manages the third group of disks that are selected from at least two nodes of group of nodes.

8. The system of claim 2 , wherein the operations further comprise:
detecting an access failure of the second node; and
in response to the detecting the access failure of the second node, using the first mapped node to access the second group of disks associated with the second node.

9. The system of claim 1 , wherein the first mapped node manages the first group of disks that are selected from at least two nodes of the group of nodes.

10. A method, comprising:
generating, by a system comprising a processor, a first mapping of a storage cluster, wherein the storage cluster comprises a group of nodes, where a node of the group of nodes comprises a group of disks;
generating, by the system, a second mapping of the storage cluster using the first mapping, wherein the group of nodes are divided into a first pair of nodes comprising a first node comprising a first group of disks and a second node comprising a second group of disks; and
generating, by the system, a third mapping of the storage cluster using the second mapping, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and manages the second group of disks of the second node, wherein the first mapped node operates on a third node that is separate from the first node and from the second node, and wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

11. The method of claim 10 , wherein the generating the second mapping further comprises dividing the storage cluster into a second pair of nodes comprising a fifth node managing a third group of disks and a sixth node managing a fourth group of disks.

12. The method of claim 11 , wherein the generating the third mapping further comprises a third mapped node associated with the fifth node that manages the third group of disks and provides access to the fourth group of disks of the fourth node.

13. The method of claim 12 , further comprising:
detecting, by the system, an access failure of the first mapped node; and
in response to the detecting the access failure of the first mapped node, using, by the system, the second mapped node to access the first group of disks.

14. The method of claim 12 , further comprising:
detecting, by the system, an access failure of the first mapped node; and
in response to the detecting the access failure of the first mapped node, employing, by the system, the second mapped node to access the second group of disks.

15. The method of claim 11 , further comprising:
detecting, by the system, an access failure of the second node; and
in response to the detecting the access failure of the second node, using, by the system, the first mapped node to access the second group of disks associated with the second node.

16. A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:
generating a first mapping of a storage cluster, wherein the storage cluster comprises a group of nodes, where a node of the group of nodes comprises a group of disks;
generating a second mapping of the storage cluster using the first mapping, wherein the group of nodes are divided into a first pair of nodes comprising a first node comprising a first group of disks and a second node comprising a second group of disks; and
generating a third mapping of the storage cluster using the second mapping, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and manages the second group of disks of the second node, and wherein the first mapped node operates on a third node that is separate from the first node and from the second node, wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

17. The non-transitory machine-readable medium of claim 16 , wherein the generating the second mapping further comprises dividing the storage cluster into a second pair of nodes comprising a fourth node managing a third group of disks and a fifth node managing a fourth group of disks.

18. The non-transitory machine-readable medium of claim 17 , wherein the generating the third mapping further comprises a second mapped node associated with the fourth node that manages the third group of disks and provided access to the fourth group of disks of the fourth node.

19. The non-transitory machine-readable medium of claim 18 , wherein the operations further comprise:
detecting an access failure o

Assignees

• Emc Ip Holding Co Llc

Inventors

• Danilov Mikhail
• Buinov Konstantin

Classifications

• G06F3/064

  Management of blocks · CPC title

• G06F3/0689

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

• G06F11/2089

  Redundant storage control functionality · CPC title

• G06F3/0644

  Management of space entities, e.g. partitions, extents, pools · CPC title

• G06F3/067

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