Distributed File System and Data Backup Method for Distributed File System

摘要

Provided are a distributed file system and a data backup system for the distributed file system. The system includes: a main FLR, a first FAC, a main FAS, and at least one first dormant FLR and a first alternate FAS; a backup distributed subsystem comprises a backup FLR, a second FAC, a backup FAS, and at least one second dormant FLR and a second alternate FAS; the at least one first dormant FLR and the at least one second dormant FLR are both used to back up the metadata on the FLR or on the backup FLR; the first alternate FAS and the second alternate FAS are both used to synchronize with the main FAS and the backup FAS and to perform write operations on current real data when the first FAC or the second FAC receives data write operation commands. The solution enhances the reliability and practicality of the system.

主权项

1. A distributed file system, comprising: a main distributed subsystem located at a first location and a backup distributed subsystem located at a second location, wherein the main distributed subsystem comprises a main file location register (FLR), a first file access client (FAC) and a main file access server (FAS); and the backup distributed subsystem comprises a backup FLR, a second FAC and a backup FAS, wherein the main distributed subsystem comprises at least one first dormant FLR and a first alternate FAS, and the backup distributed subsystem comprises at least one second dormant FLR and a second alternate FAS;
the at least one first dormant FLR and the at least one second dormant FLR are both used for backing up metadata on the main FLR or the backup FLR; and the first alternate FAS and the second alternate FAS are both used for synchronizing with the main FAS and the backup FAS to perform write operation on current actual data when the first FAC or the second FAC receives a data write operation instruction.