Patent ID: 8612495
Filing Date: 2013-12-17
Classification: G06F

Abstract:
1. A first computer, which accesses a first file system, the first computer comprising: one or more communication interface devices to which a client computer for transmitting an access request, which specifies an object that exists in the first file system, and a second computer, which accesses a second file system are coupled; and a controller, which is coupled to the one or more communication interface devices, wherein the second file system comprises a shared directory, wherein the shared directory is configured to store specific objects, wherein each of the specific objects is an object that complies with a path name comprising a name determined in accordance with a type of the second computer, wherein the specific objects include snapshots and a log file, wherein the controller is configured to: (a) mount the shared directory to the first file system; (b) identify a list of the snapshots in the second file system, and (c) create, in the first file system, a first link for each of the snapshots, by assigning year, month, day, hour, minute and second of the time of making the snapshot, which comprises a name determined in accordance with “<yyyy.mm.dd-hh.mm.ss>”, (d) create, in the first file system, a second link, which comprises a name determined in accordance with the number of log rotations of the log file, and which corresponds to the log file, (e) regularly or in a case where the size of the log file exceeds a certain amount, update the number of log rotations of the log file by incrementing by one the number of rotations of the log file, (f) change the name of the second link based on the updated number of log rotations of the log file, and (g) create a new log file in the first file system, and create, in the first file system, a third link which comprises a name determined based on the updated number of log rotations, and which corresponds to the new log file.