Snapshot readiness checking and reporting

• US 9,892,123 B2
• Filed: 09/29/2016
• Issued: 02/13/2018
• Est. Priority Date: 01/24/2014
• Status: Active Grant

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: Kottomtharayil, Rajiv, Vijayan, Manoj Kumar, Nallathambi, Vimal Kumar, Tambe, Unmil Vinay
• Primary Examiner(s): Thammavong, Prasith
• Assistant Examiner(s): BLUST, JASON W
• Application Number:
  US15/280,902
• Publication Number:
  US 20170083532A1
• Time in Patent Office: 502 Days
• Field of Search: None
• CPC Class Codes: G06F 11/00 Error detection; Error correction; Monitoring error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore
• 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 11/1458 Management of the backup or restore process
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1474 in transactions G06F16/20 takes precedence
• CPC Class Codes: G06F 11/203 using migration
• CPC Class Codes: G06F 11/2064 while ensuring consistency
• 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 2201/805 Real-time
• 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

Abstract

An information management system according to certain aspects may determine whether snapshot operations will work prior to executing them. The system may check various factors or parameters relating to a snapshot storage policy to verify whether the storage policy will work at runtime without actually executing the policy. Some examples of factors can include: availability of primary storage devices for which a snapshot should be obtained, availability of secondary storage devices, license availability for snapshot software, user credentials for connecting to primary and/or second storage devices, available storage capacity, connectivity to storage devices, etc. The system may also check whether a particular system configuration is supported in connection with snapshot operations. The result of the determination can be provided in the form of a report summarizing any problems found with the snapshot storage policy. The report can include recommended courses of action or solutions for resolving any identified issues.

Claims

1. An information management system configured to generate snapshots, the system comprising:

one or more computing devices comprising computer hardware and configured to;

determine that a first snapshot operation is scheduled to be executed based on a storage policy comprising one or more parameters associated with the first snapshot operation, the one or more parameters specifying one or both of (i) one or more primary storage devices residing in a primary storage subsystem of the information management system from which one or more snapshots are to be taken during the first snapshot operation, or (ii) one or more secondary storage devices residing in a secondary storage subsystem of the information management system in which the one or more snapshots are to be stored during the first snapshot operation;

prior to the scheduled execution of the first snapshot operation, determine one or both of (i) whether the one or more primary storage devices are available for connection to one or more media agents installed on one or more computing devices comprising computer hardware, or (ii) whether the one or more secondary storage devices are available for connection to the one or more media agents; and

in response to one or both of (i) a determination that the one or more primary storage devices are not available for connection to the one or more media agents, or (ii) a determination that the one or more secondary storage devices are not available for connection to the one or more media agents, generate a first report prior to the scheduled execution of the first snapshot operation, the first report specifying one or both of (i) the unavailability of the one or more primary storage devices, or (ii) the unavailability of the one or more secondary storage devices,

wherein the one or more computing devices are in networked communication with the one or more media agents.

2. The system of claim 1, wherein the one or more computing devices are further configured to determine whether a license associated with a snapshot application is valid, wherein the snapshot application is configured to obtain the one or more snapshots during the first snapshot operation, and the license authorizes the snapshot application to obtain the one or more snapshots.

3. The system of claim 1, wherein the one or more computing devices are further configured to determine whether the one or more secondary storage devices are online.

4. The system of claim 3, wherein the one or more secondary storage devices comprise a plurality of logical volumes and the one or more snapshots are to be stored in a logical volume of the plurality of logical volumes, and the one or more computing devices are further configured to determine whether the logical volume is available to store the one or more snapshots.

5. The system of claim 3, wherein the one or more computing devices are further configured to determine whether the one or more secondary storage devices have space sufficient to store the one or more snapshots.

6. The system of claim 1, wherein the one or more computing devices are further configured to determine whether the one or more primary storage devices are online.

7. The system of claim 6, wherein the one or more primary storage devices comprise a plurality of logical volumes and the one or more snapshots comprise a snapshot of a logical volume of the plurality of logical volumes, and the one or more computing devices are further configured to determine whether the logical volume is available for the first snapshot operation.

8. The system of claim 1, wherein the one or more computing devices are further configured to test connectivity to the one or more primary storage devices or to the one or more secondary storage devices.

9. The system of claim 8, wherein storage policy specifies that a first media agent of the one or more media agents is to perform the first snapshot operation, wherein the one or more media agents are further configured to instruct the first media agent to establish a connection to the one or more primary storage devices or to the one or more secondary storage devices.

10. The system of claim 9, wherein the first media agent is configured to, in response to the instruction, establish the connection to the one or more primary storage devices or to the one or more secondary storage devices using credentials associated with the first snapshot operation.

11. The system of claim 10, wherein the one or more media agents are further configured to generate the first report in response to a determination that the first media agent cannot establish the connection to the one or more primary storage devices or to the one or more secondary storage devices.

12. The system of claim 1, wherein:

the one or more primary storage devices or the one or more secondary storage devices comprise a storage array comprising one or more volumes, the one or more volumes in the storage array being managed by volume manager software; and

the one or more computing devices are further configured to determine whether a configuration of the one or more volumes managed by the volume manager software is compatible with the storage policy.

13. The system of claim 1, wherein the one or more computing devices are further configured to, in response to one or both of (i) a determination that the one or more primary storage devices are available for connection to the one or more media agents, or (ii) a determination that the one or more secondary storage devices are available for connection to the one or more media agents, generate a second report prior to the scheduled execution of the first snapshot operation, wherein the second report does not specify one or both of (i) unavailability of the one or more primary storage devices, or (ii) unavailability of the one or more secondary storage devices.

14. The system of claim 1, wherein the one or more primary storage devices and the one or more secondary storage devices comprise the same storage device or devices.

15. The system of claim 1, wherein each of the one or more snapshots to be obtained for the first snapshot operation is a hardware-based snapshot.

16. A method of verifying snapshot storage operations for an information management system, the method comprising:

determining that a first snapshot operation is scheduled to be executed based on a storage policy comprising one or more parameters associated with the first snapshot operation, the one or more parameters specifying one or both of (i) one or more primary storage devices residing in a primary storage subsystem of the information management system from which one or more snapshots are to be taken during the first snapshot operation, or (ii) one or more secondary storage devices residing in a secondary storage subsystem of the information management system in which the one or more snapshots are to be stored during the first snapshot operation;

prior to the scheduled execution of the first snapshot operation, determining one or both of (i) whether the one or more primary storage devices are available for connection to one or more media agents installed on one or more computing devices comprising computer hardware, or (ii) whether the one or more secondary storage devices are available for connection to the one or more media agents; and

in response to one or both of (i) a determination that the one or more primary storage devices are not available for connection to the one or more media agents, or (ii) a determination that the one or more secondary storage devices are not available for connection to the one or more media agents, generating a first report prior to the scheduled execution of the first snapshot operation, the first report specifying one or both of (i) the unavailability of the one or more primary storage devices, or (ii) the unavailability of the one or more secondary storage devices.

17. The method of claim 16, wherein the one or more secondary storage devices comprise a plurality of logical volumes and the one or more snapshots are to be stored in a logical volume of the plurality of logical volumes, the method further comprising determining whether the logical volume is available to store the one or more snapshots.

18. The method of claim 16, wherein the one or more primary storage devices comprise a plurality of logical volumes and the one or more snapshots comprise a snapshot of a logical volume of the plurality of logical volumes, the method further comprising determining whether the logical volume is available for the first snapshot operation.

19. The method of claim 16, wherein storage policy specifies that a first media agent of the one or more media agents is to perform the first snapshot operation, the method further comprising instructing the first media agent to establish a connection to the one or more primary storage devices or to the one or more secondary storage devices.

20. The method of claim 16, further comprising generating the first report in response to determining that the first media agent cannot establish the connection to the one or more primary storage devices or to the one or more secondary storage devices.