set_verity [file] Set the verity flags associated with the specified file.
getflags [file] Get the flags associated with the specified file.
setflags [flag] [file] Set an f2fs file on specified file. The flag can be casefold, compression, and nocompression.
shutdown shutdown filesystem Freeze and stop all IOs for the file system mounted on dir. The level parameter can be:
0 going down with full sync
1 going down with checkpoint only
2 going down with no sync
3 going down with metadata flush
4 going down with fsck mark
pinfile [get|set] [file] Get or set the pinning status on a file.
fallocate [keep_size] [offset] [length] [file] Request that space be allocated on a file. The keep_size parameter can be either 1 or 0.
write [chunk_size in 4kb] [offset in chunk_size] [count] [pattern] [IO] [file_path] Write a given pattern to file_path . The pattern parameter can be:
zero zeros
inc_num incrementing numbers
rand random numbers
buffered buffered I/O
dio direct I/O
read [chunk_size in 4kb] [offset in chunk_size] [count] [IO] [print_nbytes] [file_path] Read data in file_path and print print_nbytes . The IO options can be:
buffered buffered I/O
dio direct I/O
fiemap [offset in 4kb] [count] [file_path] get block address in file
gc_urgent dev [start|end|run] [time in sec] Start, end, or run gc_urgent for a given time period
defrag_file [start] [length] [file_path] Defragment a file.
copy [-d] [-m] [-s] [src_path] [dst_path] Copy file from src_path to dst_path. The pattern parameter can be:
-d use direct I/O
-m use mmap for source file
-s use sendfile to transfer data
get_cblocks [file] Get the number of compressed blocks.
release_cblocks [file] Release compressed blocks to get free space.
reserve_cblocks [file] Reserve free blocks to prepare decompressing blocks in the file.