Massively Scalable Object Storage for Storing Object Replicas

• US 20160070481A1
• Filed: 08/10/2015
• Published: 03/10/2016
• Est. Priority Date: 03/08/2011
• Status: Active Grant

• Current Assignee: Rackspace US Incorporated (Apollo Global Management, Inc.)
• Original Assignee: Rackspace US Incorporated (Apollo Global Management, Inc.)
• Inventors: Barton, Michael, Reese, Will, Dickinson, John A., Payne, Jay B., Thier, Charles B., Holt, Gregory
• Granted Patent: US 9,760,289 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/1824 implemented using Network-attached Storage [NAS] architecture distributed or networked storage systems G06F3/067; protocols for distributed storage of data in a network H04L67/1097
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0631 by allocating resources to storage systems
• CPC Class Codes: G06F 3/0641 De-duplication techniques
• CPC Class Codes: G06F 3/0644 Management of space entities, e.g. partitions, extents, pools
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 9/5083 Techniques for rebalancing the load in a distributed system
• CPC Class Codes: H04L 47/80 Actions related to the user profile or the type of traffic
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1006 with static server selection, e.g. the same server being selected for a specific client
• CPC Class Codes: H04L 67/1023 based on a hash applied to IP addresses or costs
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/1097 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]
• CPC Class Codes: Y10S 707/9994 Distributed or remote access
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

An example method for storing data includes providing a plurality of physical storage pools, each storage pool including a plurality of storage nodes coupled to a network. The method also includes mapping a partition of a plurality of partitions to a set of physical storage pools, where each physical storage pool of the set of physical storage pools is located in a different availability zone, and the storage nodes within an availability zone are subject to a correlated loss of access to stored data. The method further includes receiving a data management request over the network, the data management request being associated with a data object. The method also includes identifying a first partition of the plurality of partitions corresponding to the received data management request and manipulating the data object in the physical storage pools mapped to the first partition in accordance with the data management request.

Claims

1. (canceled)

2. A method of building one or more rings for maintaining data in a file storage system, comprising:

determining a number of partitions for each storage pool in the file storage system;

placing the storage pools in a sorting order;

assigning partitions to storage pools based on the sorting order and a zone restriction; and

adjusting the sorting order of one or more storage pools in response to the assigning.

3. The method of claim 2, wherein the number of partitions is based on a weight of the respective storage pool.

4. The method of claim 3, wherein the weight is the storage capacity of the respective storage pool.

5. The method of claim 2, further including:

determining a partition power for the respective storage pool; and

calculating 2 to the partition power, wherein the number of partitions is based on a result of the calculating.

6. The method of claim 5, further including:

assigning N partitions to the respective storage pool, wherein N is a result of the calculating 2 to the partition power.

7. The method of claim 2, wherein the placing the storage pools in a sorting order including placing the storage pools in an order from the highest number of partitions to the lowest number of partitions.

8. The method of claim 7, further including:

maintaining the sorting order as partitions are assigned to storage pools in the file storage system.

9. The method of claim 2, wherein the assigning partitions to storage pools based on the sorting order and a zone restriction includes assigning partitions to a storage pool with the highest number of partitions, but subject to the zone restriction that the storage pool to which a partition is being assigned is not in a same zone as any other storage pool that includes a partition replica for that same partition.

10. The method of claim 9, wherein the adjusting includes maintaining the sorting order as partitions are assigned to storage pools in the file storage system.

11. The method of claim 2, wherein the adjusting includes decrementing the number of partitions for a storage pool to which a partition has been assigned.

12. The method of claim 11, wherein the adjusting further includes moving the storage pool to a lower position in the sorting order.

13. The method of claim 2, wherein each partition is assigned multiple storage pools in different zones.

14. The method of claim 2, further including:

receiving an object;

associating the object with a set of partitions assigned to storage pools in different zones; and

storing a replica of the object in each partition of the set of partitions.

15. The method of claim 2, wherein a ring is an object ring.

16. The method of claim 2, wherein a ring is a container ring.

17. The method of claim 2, wherein a ring is an account ring.

18. A computer readable medium containing executable instructions, which when executed on one or more processors:

determines a number of partitions for each storage pool in the file storage system;

places the storage pools in a sorting order;

assigns partitions to storage pools based on the sorting order and a zone restriction; and

adjusts the sorting order of one or more storage pools in response to the assigning.

19. The computer readable medium of claim 18, wherein the number of partitions is based on a weight of the respective storage pool.

20. The computer readable medium of claim 19, wherein the weight is the storage capacity of the respective storage pool.

21. The computer readable medium of claim 18, the executable instructions further including:

determining a partition power for the respective storage pool;

calculating 2 to the partition power; and

assigning N partitions to the respective storage pool, wherein N is a result of the calculating 2 to the partition power.