公开(公告)号：US20170177644A1

公开(公告)日：2017-06-22

申请号：US15158642

申请日：2016-05-19

Applicant: Plexistor Ltd.

Inventor： Amit GOLANDER ,  Boaz HARROSH ,  Sagi MANOLE

IPC: G06F17/30

CPC classification number: G06F16/13 ,  G06F16/9027

Abstract: A computer implemented method for updating a file system tree structure through an atomic operation, comprising one or more hardware processor adapted for designating a file system comprising a plurality of files arranged in a plurality of tree structures, the file system is based on a direct mapping persistent memory, receiving instructions from a client to alter an altered file of the plurality of files, creating an alternate tree structure to apply the alteration in case the alteration involves a non-atomic tree structure operation to an original tree structure of the plurality of tree structures containing the altered file and committing the alteration to the file system through an atomic operation.

公开(公告)号：US20170177447A1

公开(公告)日：2017-06-22

申请号：US14970611

申请日：2015-12-16

Applicant: Plexistor Ltd.

Inventor： Amit GOLANDER ,  Boaz HARROSH ,  Sagi MANOLE

IPC: G06F11/14 ,  G06F17/30

Abstract: A persistent memory based distributed-journal file system, comprising: 1) Direct mapped persistent memory unit hosting at least a subset of a file system which contains a plurality of files each associated with a metadata record and a self-journal record. 2) A memory storing a program code. 3) One or more processors coupled to the persistent memory unit and the memory for executing the program code which comprises: (a) Creating a resources dataset which maps characteristics of the file system by analyzing the files' metadata records. (b) Receiving an alteration request to alter altered file(s) of the plurality of files. (c) Determining if the alteration is an atomic alteration which is applied to the file system in an atomic operation. (d) Logging an indication of the alteration in the respective self-journal record of the altered file(s) for non-atomic alteration. (e) Applying the alteration in the file system.