Migrating data to disk without interrupting running operations

• US 10,747,436 B2
• Filed: 04/25/2019
• Issued: 08/18/2020
• Est. Priority Date: 09/02/2015
• Status: Active Grant

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: Kochunni, Jaidev O., Klose, Michael F.
• Primary Examiner(s): Birkhimer, Christopher D
• Application Number:
  US16/395,194
• Publication Number:
  US 20190250828A1
• Time in Patent Office: 481 Days
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0635 by changing the path, e.g. traffic rerouting, path reconfiguration
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

Systems and methods for migrating stored backup data between disks (e.g., from an existing disk to another disk), such as a new or different disk in a magnetic storage library, without interrupting or otherwise affecting secondary copy operations (e.g., operations currently writing data to the storage library) utilizing the magnetic storage library, are described. In some embodiments, the systems and methods mark one or more mount paths as full when a running secondary copy operation associated with the mount path has completed a job (regardless of the actual current capacity or intended use of the mount path), and migrate each of the one or more data to a second disk of the data storage library when the mount path associated with the data is marked as full.

Claims

1. A method, performed by an information management system, for refreshing mount paths of a data storage library, the method comprising:

identifying a request to replace an existing disk associated with one or more mount paths with a new disk, wherein one or more partitions are mapped to the one or more mount paths of the data storage library;

for all non-active mount paths, migrating, at a first time, data associated with the non-active mount paths to the new disk;

for all active mount paths;

marking each mount path as non-active when a running operation associated with the mount path has completed a job; and

migrating, at a second time later than the first time, data associated with the mount path marked as non-active to the new disk; and

for all mount paths migrated to the new disk, marking each mount path as resident on the new disk.

2. The method of claim 1, further comprising:

creating one or more temporary mount paths on the new disk for all active mount paths associated with currently running operations;

sending all jobs performed by the running operations to the created temporary mount paths; and

when the mount paths marked as non-active are marked as resident on the new disk, returning all jobs performed by the running operations to the mount paths marked as resident on the new disk.

3. The method of claim 1, further comprising:

predicting a time period, commencing with the first time to migrate the data associated with the non-active mount paths to the new disk; and

for all the active mount paths associated with currently running operations;

marking the mount paths as non-active when the predicted time period lapses; and

migrating the data associated with the mount paths marked as non-active to the new disk.

4. The method of claim 1, wherein the data storage library is a virtual storage library that represents a list of mount paths through which data is transferred from a media agent to disks.

5. The method of claim 1, wherein each of the one or more mount paths represented by the data storage library contain volume folders associated with data stored to disks via the one or more mount paths.

6. The method of claim 1, wherein a media agent performs operations using a fill and spill mount path allocation policy or a spill and fill mount path allocation policy.

7. The method of claim 1, wherein the existing disk is a magnetic disk or an optical disk.

8. The method of claim 1, wherein marking each mount path of the active mount paths as non-active when a running operation associated with the mount path has completed a job includes marking a non-full mount path as full when the running operation completes a currently running copy job.

9. The method of claim 1, wherein marking each mount path of the active mount paths as non-active when a running operation associated with the mount path has completed a job includes performing a database operation within the data storage library to indicate a mount path cannot perform another job associated with running operations.

10. The method of claim 1, wherein marking each mount path of the active mount paths as non-active when a running operation associated with the mount path has completed a job includes marking each mount path as full until data associated with the mount path marked as full have completed a migration to the new disk.

11. A system, comprising:

at least one processor;

at least one data storage device coupled to the at least one processor and storing instructions for implementing a process to migrate data between disks, wherein the process comprises;

accessing a request to migrate data stored on an existing disk to a new disk;

for all active mount paths associated with running operations, marking, via a migration component, each mount path as full when a running operation associated with the mount path has completed a job to transfer data to the existing disk; and

migrating, via the migration component, data associated with the mount path marked as full to the new disk.

12. The system of claim 11, wherein the migration component marks all mount paths migrated to the new disk as open to receive data to transfer to the new disk.

13. The system of claim 11, wherein the migration component migrates data associated with non-active mount paths to the new disk before migrating the data associated with the active mount paths to the new disk.

14. The system of claim 11, wherein the migration component migrates data associated with non-active mount paths to the new disk before marking the active mount paths as full.

15. The system of claim 11, wherein the process further comprises:

creating, via a temporary mount path component, one or more temporary mount paths on the new disk for all the active mount paths associated with the running operations;

directing all jobs performed by the running operations to the created temporary mount paths during migration of data associated with mount paths marked as non-active to the new disk; and

when the mount paths marked as non-active are marked as open on the new disk, redirecting, all jobs performed by the running operations to the mount paths marked as open on the new disk.

16. The system of claim 11, wherein the migration component is further configured to:

predict a time period to migrate the data associated with the non-active mount paths to the new disk; and

for all the active mount paths associated with the currently running operations;

mark the mount paths as full when the predicted time period lapses; and

migrate the data associated with the mount paths marked as full to the new disk.

17. The system of claim 11, wherein the access component and the migration component are part of a media agent within an information management system that is configured to perform the currently running operations.

18. The system of claim 11, wherein each of the one or more mount paths are represented by a virtual magnetic library containing volume folders associated with data stored to disks via the one or more mount paths.

19. A computer-readable medium, excluding transitory propagating signals, storing instructions that, when executed by an information management system, cause the information management system to perform transfer of data to disks of a data storage library, the method comprising:

transferring data to one or more data contained in one or more partitions of a first disk of the data storage library,

wherein the one or more partitions are associated with one or more mount paths through which data is transferred to the one or more data stored by the one or more partitions of the first disk;

marking each of the one or more mount paths as full when a running operation associated with the mount path has completed a job; and

transferring each of the one or more data to another data storage medium after the mount path associated with the data is marked as full.

20. The computer-readable medium of claim 19, wherein the other data storage medium is a second disk, and wherein the method further comprises:

creating one or more temporary mount paths to the second disk;

directing jobs performed by the running operations to the created temporary mount paths during migration of the one or more data to the second disk; and

when the migration of the one or more data to the second disk is complete, redirecting the jobs performed by the running operations to the mount paths.