TARGETED SNAPSHOT BASED ON VIRTUAL MACHINE LOCATION

• US 20180113625A1
• Filed: 10/25/2016
• Published: 04/26/2018
• Est. Priority Date: 10/25/2016
• Status: Active Grant

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: SANCHETI, Ashwin Gautamchand, DORNEMANN, Henry Wallace
• Granted Patent: US 10,162,528 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 11/1402 Saving, restoring, recovering or retrying
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1453 using de-duplication of the data
• CPC Class Codes: G06F 11/1466 to make the backup process non-disruptive
• CPC Class Codes: G06F 16/128 Details of file system snapshots on the file-level, e.g. snapshot creation, administration, deletion use of snapshots for error detection or correction G06F11/14, G06F11/16
• CPC Class Codes: G06F 16/183 Provision of network file services by network file servers, e.g. by using NFS, CIFS network file access protocols H04L67/1097
• CPC Class Codes: G06F 2009/45575 Starting, stopping, suspending or resuming virtual machine instances
• CPC Class Codes: G06F 2009/45583 Memory management, e.g. access or allocation
• CPC Class Codes: G06F 2009/45591 Monitoring or debugging support
• CPC Class Codes: G06F 2201/815 Virtual middleware or OS functionality using virtual machines to implement generic software techniques for error detection or fault masking G06F11/1484
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/065 Replication mechanisms
• 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 9/45558 Hypervisor-specific management and integration aspects

Abstract

A data storage environment can include one or more virtual machines instantiated on a host computing device. Based on physical location data of the one or more virtual machines received from the host computing device, a storage manager can control the performance of a secondary copy operation on one or more storage units that store virtual machine data associated with the one or more virtual machines and/or the performance of a secondary copy operation on the one or more virtual machines.

Claims

1. A method for creating a snapshot of a storage unit associated with a virtual machine, the method comprising:

requesting a host computing device to perform a virtual machine snapshot for each of a plurality of virtual machines executing using one or more processors of the host computing device, wherein the host computing device communicates with an operating system of each the plurality of virtual machines to place the each of the plurality of virtual machines in a stable state and performs the virtual machine snapshot for a particular virtual machine of the plurality of virtual machines while the particular virtual machine is in the stable state;

identifying one or more virtual data stores comprising the plurality of virtual machines based at least in part on metadata received in response to the virtual machine snapshot for each of the plurality of virtual machines, wherein following the virtual machine snapshot of the particular virtual machine, changes to the particular virtual machine are stored in a first location of the one or more virtual data stores that is different from a second location where the particular virtual machine is stored and the virtual machine snapshot of the particular virtual machine refers to the second location where the particular virtual machine is stored;

identifying one or more storage units that correspond to the one or more virtual data stores based at least in part on the metadata received in response to the virtual machine snapshot for each of the plurality of virtual machines;

requesting a primary storage device to perform a storage unit snapshot, the storage unit snapshot comprising a snapshot of each of the identified one or more storage units, wherein following the storage unit snapshot, changes to particular data residing in a particular storage unit of the one or more storage units are stored in a third location of the primary storage device that is different from a fourth location where the particular data is stored and the storage unit snapshot refers to the fourth location where the particular data is stored; and

requesting the host computing device to remove the virtual machine snapshot for each of the plurality of virtual machines based at least in part on an indication received from the primary storage device that the storage unit snapshot is complete, wherein to remove the virtual machine snapshot for the particular virtual machine, the host computing device merges changes to the virtual machine stored in the first location with the virtual machine stored in the second location.

2. The method of claim 1, further comprising performing a secondary storage operation of at least one virtual machine of the plurality of virtual machines based at least in part on a determined physical location of particular virtual machine data corresponding to the at least one virtual machine, the particular virtual machine data residing within at least one of the identified one or more storage units, wherein the physical location is determined based at least in part on the metadata received in response to the virtual machine snapshot for each of the plurality of virtual machines.

3. A method for creating a snapshot of a storage unit associated with a virtual machine, the method comprising:

receiving, from a host computing device, location data of at least one virtual machine executing using one or more processors of the host computing device;

identifying one or more storage units of a primary storage device that store virtual machine data corresponding to the at least one virtual machine based at least in part on the location data; and

requesting the primary storage device to perform a storage unit snapshot, the storage unit snapshot comprising a snapshot of each of the identified one or more storage units.

4. The method of claim 3, further comprising requesting the host computing device to perform a virtual machine snapshot of the at least one virtual machine and wherein said receiving the location data is based at least in part on the host computing device performing the virtual machine snapshot.

5. The method of claim 4, wherein to perform the virtual machine snapshot of the at least one virtual machine, the host computing device places the at least one virtual machine in a stable state.

6. The method of claim 3, wherein the at least one virtual machine comprises a plurality of virtual machines, said receiving location data comprises receiving location data of each of the plurality of virtual machines, and said identifying comprises identifying the one or more storage units that store the virtual machine data corresponding to the plurality of virtual machines.

7. The method of claim 3, further comprising requesting the host computing device to perform a virtual machine snapshot of the at least one virtual machine, wherein said receiving location data is based at least in part on the host computing device performing the virtual machine snapshot.

8. The method of claim 7, wherein following the virtual machine snapshot, changes to the at least one virtual machine are stored apart from the virtual machine data.

9. The method of claim 7, further comprising notifying the host computing device based at least in part on a completion of the storage unit snapshot, wherein based at least in part on said notifying the host computing device merges virtual machine snapshot data of the virtual machine with pre-snapshot virtual machine data.

10. The method of claim 3, wherein the location data comprises physical location data.

11. The method of claim 10, wherein the physical location data comprises at least one of a sector location or a block location.

12. A data storage system, comprising:

a storage manager comprising one or more processors and at least one data store, the storage manager communicatively coupled to a primary storage device and a host computing device, the host computing device comprising one or more second processors, at least one second data store, and at least one virtual machine instantiated thereon and executing on the one or more second processors, the storage manager configured to;

receive from the host computing device location data of the at least one virtual machine;

identify one or more storage units of the primary storage device that store virtual machine data corresponding to the at least one virtual machine based at least in part on the location data; and

request the primary storage device to perform a storage unit snapshot, the storage unit snapshot comprising a snapshot of each of the identified one or more storage units.

13. The data storage system of claim 12, wherein the storage manager is further configured to request the host computing device to perform a virtual machine snapshot of the at least one virtual machine and wherein the storage manager receives the location data based at least in part on the host computing device performing the requested virtual machine snapshot.

14. The data storage system of claim 13, wherein to perform the virtual machine snapshot of the at least one virtual machine, the host computing device is configured to place the at least one virtual machine in a stable state.

15. The data storage system of claim 12, wherein the at least one virtual machine comprises a plurality of virtual machines, wherein the location data comprises location data of each of the plurality of virtual machines, and wherein the storage manager is configured to identify the one or more storage units that store the virtual machine data corresponding to the plurality of virtual machines.

16. The data storage system of claim 12, wherein the storage manager is further configured to request the host computing device to perform a virtual machine snapshot of the at least one virtual machine, and wherein the storage manager receives the location data based at least in part on the host computing device performing the virtual machine snapshot.

17. The data storage system of claim 16, wherein following the virtual machine snapshot, the host computing device is configured to store changes to the at least one virtual machine are stored apart from the virtual machine data.

18. The data storage system of claim 16, wherein the storage manager is further configured to notify the host computing device based at least in part on a completion of the storage unit snapshot, wherein based at least in part on the notification the host computing device is configured to merge virtual machine snapshot data of the virtual machine with pre-snapshot virtual machine data of the virtual machine.

19. The data storage system of claim 12, wherein the location data comprises physical location data.

20. The data storage system of claim 19, wherein the physical location data comprises at least one of a sector location or a block location.