CRASH RECOVERY SYSTEM AND METHOD FOR A DISTRIBUTED FILE SERVER USING OBJECT BASED STORAGE

摘要

The invention, object-based relates to a fault recovery system and method in a distributed file servers using the storage, and the metadata of the namespace and a file consisting of a directory is stored in the metadata server the actual data of the file is stored in an object-based storage be and there are cross-references are formed between them, cross-references should be maintained without any defects in any case, but in the event of failure on the server, in recent years from some of the updated cross-references the mothayeo not micheo fully reflected in the persistent storage of metadata refer to the non-existent data area or may cause problems such as the occurrence of any lost data area that are not referenced in the metadata, and it is extremely inefficient to search the whole storage order to solve this problem the present invention this problem in order to correct the inspection of the latest that the error in only the center of the updated cross-reference to not search the whole storage, and proposes a method for modifying, distributed file system of the present invention and the metadata server, which processes only the file system metadata , object-based storage cluster to process only the file system data is connected to the network by providing the file system services to multiple clients, is possible implementation within the SCSI / OSD protocol category object-based storage standard input and output protocols, recently it emerged device it is possible to improve the compatibility. ; A distributed file system, object storage, recovery, high performance server