Method and system for generating and restoring a backup image
First Claim
1. A method comprising:
- generating, by a storage server, a backup image offset map indicating a relative location where a file is stored in the backup image before file data has been written to the backup image;
storing, by the storage server, the backup image offset map in a portion of the backup image on a storage device,wherein the backup image offset map comprises an array having a number of elements equal to a number of inodes on a file system that hosts a backup path, an element of the array representing an inode on the file system and indicating the relative location where a file that is associated with a number of the inode is stored in the backup image.
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Abstract
A method and system for generating and restoring a backup image are disclosed. A server receives a request, which includes a backup path, to generate a backup image. The server generates a backup image offset map that indicates a relative location where a file is stored in the backup image before file data has been written to the backup image. The server stores the backup image offset map in a portion of the backup image on a storage device. The backup image offset map comprises an array having a number of elements equal to a number of inodes on a file system that hosts a backup path, an element of the array representing an inode on the file system, and indicates the relative location where a file that is associated with a number of the inode is stored in the backup image.
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Citations
15 Claims
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1. A method comprising:
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generating, by a storage server, a backup image offset map indicating a relative location where a file is stored in the backup image before file data has been written to the backup image; storing, by the storage server, the backup image offset map in a portion of the backup image on a storage device, wherein the backup image offset map comprises an array having a number of elements equal to a number of inodes on a file system that hosts a backup path, an element of the array representing an inode on the file system and indicating the relative location where a file that is associated with a number of the inode is stored in the backup image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification