A method for error tracking a log subsystem of a file system is provided. The method includes: when a data block of the log subsystem is recovered to an original position in the file system, calculating a verification code of the data block to obtain a second verification code; determining whether a verification result between the second verification code and a first verification code of the data block stored in a spare space in a submit block of the log subsystem in a disk is consistent; and when the verification result is inconsistent, processing the data block corresponding to the inconsistent verification result. With the above method, given that system performance is least affected, an error and a position of the error of the log subsystem of the file system can be more accurately detected to enhance the reliability of the log subsystem.