Browse and restore for block-level backups
AssigneeCommvault Systems, Inc.
InventorsSri Karthik Bhagi, Sunil Kumar Gutta, Vijay H. Agrawal, Rahul S. Pawar
Life of this patent
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Abstract
Systems and methods for performing file-level restore operations for block-level data volumes are described. In some embodiments, the systems and methods restore data from a block-level data volume contained in secondary storage by receiving a request to restore one or more files from the block-level data volume, mounting a virtual GUID Partition Table (GPT) disk to the block-level data volume, accessing one or more mount paths established by the virtual GPT disk between the data agent and the block-level data volume, and browsing data from one or more files within the block-level data volume via the established one or more mount paths provided by the virtual GPT disk.
Claims20
A method performed by a data agent of an information management system for restoring data from a block-level data volume contained in at least one secondary data storage device, the method comprising:
- receiving a user-based request to restore one or more files from the block-level data volume;
- mounting at least one virtual Globally Unique Identifier (GUID) Partition Table (GPT) disk to the block-level data volume;
- accessing one or more mount paths established by the virtual GPT disk between the data agent and the block-level data volume;
- and
- browsing data from one or more files within the block-level data volume via the established one or more mount paths provided by the virtual GPT disk, wherein the browsing comprises:
- identifying clusters within the block-level data volume that are associated with the one or more files;
- translating the identified clusters into disk sectors;
- transferring a read request of the disk sectors to a virtual disk driver;
- receiving from the virtual disk driver, volume extent information (i) associated with volume extents for the one or more files within the block-level disk volume and (ii) converted by the virtual disk driver from disk extent information that was based on size and offset information associated with the disk sectors;
- and
- accessing data associated with the one or more files within the block-level data volume using the received volume extent information associated with the volume extents for the one or more files within the block-level disk volume.
A system for restoring data contained in a block-level data volume, the 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 restore data contained in a block-level data volume, wherein the process comprises:
- receiving, via a request component, a request to perform a file-level restore of the block-level data volume;
- mounting, via a pseudo mount component, a virtual Globally Unique Identifier (GUID) Partition Table (GPT) disk to the block-level data volume;
- and
- restoring, via a restore component, data from one or more files within the block-level data volume via one or more mount paths provided by the virtual GPT disk.
A computer-readable medium, excluding transitory propagating signals, storing instructions that, when executed by a pseudo mount server, causes the pseudo mount server to perform a method for facilitating file-level browsing of a block-level data volume, the method comprising:
- generating a pseudo mount point to the block-level data volume that represents a point in time image of the block-level data volume,
- wherein generating the pseudo mount point to the block-level data volume includes mounting a virtual Globally Unique Identifier (GUID) Partition Table (GPT) disk to the block-level data volume;
- translating, via the pseudo mount point, a file restore request into a volume extent request;
- and
- restoring data associated with the volume extent request via one or more mount paths provided by the virtual GPT disk.
Dependencies are inferred from the claim text.