| 摘要 |
Performing a snapshot backup includes initiating, by a snapshot driver, a snapshot of at least a portion of a filesystem; and receiving, by the snapshot driver, a filesystem bitmap from a backup agent. Subsequently, the snapshot driver performs copy-on-write operations based on the filesystem bitmap. |
| 主权项 |
1. A method comprising:
initiating, by a snapshot driver executing on a computer, a snapshot of at least a portion of a filesystem; receiving, by the snapshot driver, a read request from a backup agent executing on the computer, the backup agent being different than the snapshot driver,
wherein the read request comprises data identifying a block of data of the filesystem that includes a filesystem bitmap of the filesystem; in response to the read request, retrieving by the snapshot driver, executing on the computer, the block of data of the filesystem that includes the filesystem bitmap of the filesystem; and providing, by the snapshot driver, the block of data to the backup agent; receiving by the snapshot driver, executing on the computer, the filesystem bitmap of the filesystem from the backup agent, executing on the computer; and performing copy-on-write operations, by the snapshot driver executing on the computer, based on the filesystem bitmap of the filesystem. |
