Samsung Electronics Co., Ltd.

Yeongjin Gil

Minjung Kim

Woojoong Lee

Sungjong Seo

Hyeongjun Kim

Jaewook Kim

Hobin Woo

Junbeom Yeom

Kitae Lee

Sunghwan Yun

Daeho Jeong

Disclosed is an electronic device comprising: a non-volatile memory configured to store at least one file including metadata and user data; a file system configured to manage the at least one file through a log stream; and a file system (FS) manager configured to monitor a free space log included in the log stream corresponding to a first free space of the non-volatile memory, and to transmit a compression request to the file system based on the size of the first free space, displayed on the free space log, having a value less than a first reference value. The file system may be configured to: based on the compression request being received, compress at least a part of the metadata stored in the non-volatile memory based on the log stream, to store same in the first free space; and display a second free space of the non-volatile memory, secured through the compression of the at least a part of the metadata, as a reserved block log in the log stream.

Storage space reclamation via cold file metadata compression

An electronic device in an example embodiment may include a communication interface configured to receive an original file, a memory, and a processor. The processor may generate bit information corresponding to uppercase and lowercase letters included in a filename of the original file. The processor may generate a case insensitive (CI) filename in which the filename of the original file is expressed by characters of a first type. The processor may encrypt the CI filename and may calculate a first hash value corresponding to the encrypted CI filename. The processor may record filename metadata including at least one of the encrypted CI filename, a length of the encrypted CI filename, the first hash value, and the bit information, in the memory. The processor may search for a target file to be found based on the filename metadata.

Operation method and electronic device for generating and using filename metadata including encrypted case insensitive filename

An electronic device includes: a storage device including multiple segments configured to store data; a buffer memory configured to store segment attributes corresponding to the multiple segments, respectively; and one processor electrically connected to the storage device and the buffer memory. The one processor is configured to: determine, based on two or more parameters related to a data requested to be written, a data attribute; store the data requested to be written in a segment of the multiple segments, the segment being corresponding to the data attribute among the multiple segments; store a segment attribute of the segment, which is determined based on the data attribute in the buffer memory; update the data attribute, based on a data modification time of the data requested to be written; and update the segment attribute, based on the updated data attribute.

Electronic device and method for performing garbage collection

An electronic device is provided. The electronic device includes a storage device configured to include a first partition, a second partition, and a third partition, and a processor configured to configure the second partition as a first volume and the third partition as a second volume, and attach or detach the second volume to or from a file system to manage a storage space of the storage device.

Electronic device and operation method of electronic device for managing storage space

An electronic device may include a storage, a memory, and a processor configured to read or write a file from or to the memory. The memory may include a lower file system for compressing and storing a file by using a first partition of the storage and an upper file system for decompressing and storing a file by using a second partition of the storage and/or the lower file system. The processor may copy, to an upper file system of the memory, a first file having an access number greater than a certain level by decompressing the first file in the lower file system, and may control a stackable file system to read the first file from the upper file system and to provide the first file to the application layer based on a request from the application layer being detected with respect to the copied first file.

Electronic device and method of electronic device operating file system using data compression and memory partition

A method for initializing a storage is provided. The method includes comparing a size of a disk partition of the storage with a size of a filesystem image recorded on the storage, and reconfiguring the filesystem image in a dynamic manner if the disk partition size is larger than that of the filesystem image, wherein the filesystem image may include a metadata area composed of metadata blocks and a data block area composed of file data blocks, and wherein the data block area may include in sequence a first free block area composed of only file data blocks where data is not recorded, and a file data area composed of at least one file data block where data is recorded. Various other embodiments are possible.

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Suwon-si, South Korea

Yeongjin Gil