mkfs.f2fs 命令

常用示例

说明

mkfs.f2fs creates a Flash-Friendly File System (F2FS) on block devices. F2FS is a modern filesystem designed specifically for flash-based storage like SSDs, eMMC, and SD cards. The filesystem employs log-structured design principles optimized for NAND flash characteristics, providing better performance and extended device lifespan compared to traditional filesystems on flash media. It supports features like inline data, inline directories, extent-based mapping, and atomic writes. When creating a filesystem, the tool partitions the device into segments, sections, and zones for efficient garbage collection and wear leveling. The overprovision ratio reserves space for this purpose. Exit status is 0 on success, 1 on failure.

参数

-l _label_

Set the volume label for the filesystem

-a _0|1_

Use heap-based block allocation (1) or not (0); default is 1

-o _ratio_

Set overprovision ratio as a percentage; default is 5%

-s _segments_

Number of segments per section; default is 1

-z _sections_

Number of sections per zone; default is 1

-e _extensions_

Extensions for cold files (e.g., multimedia files)

-E _extensions_

Extensions for hot files (e.g., database files)

-w _size_

Sector size in bytes

-R _uid:gid_

Set root directory owner UID and GID

-f

Force overwrite if filesystem already exists on device

-q

Quiet mode; suppress output messages

-O _feature_

Enable filesystem features: encrypt, compress, quota, verity, casefold

-c _device_

Add additional device for multi-device volume (up to 7 devices)

-t _0|1_

Set discard policy; 1 enables discard support

-d _level_

Set debug level for verbose output

-T _timestamp_

Set inode timestamps to specified value

-S

Enable sparse mode for creating image files