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DUMP.F2FS(8) System Manager's Manual DUMP.F2FS(8)


dump.f2fs - retrieve directory and file entries from an F2FS-formated image


dump.f2fs [ -i inode number ] [ -n NAT range ] [ -s SIT range ] [ -a SSA range ] [ -b block address ] [ -d debugging-level ] device


dump.f2fs is used to retrieve f2fs metadata (usually in a disk partition). device is the special file corresponding to the device (e.g. /dev/sdXX).

Currently, it can retrieve 1) a file given its inode number, 2) NAT entries into a file, 3) SIT entries into a file, 4) SSA entries into a file, 5) reverse information from the given block address.

The exit code returned by dump.f2fs is 0 on success and -1 on failure.


-i inode number
Specify an inode number to dump out.
-n NAT range
Specify a range presented by nids to dump NAT entries.
-s SIT range
Specify a range presented by segment numbers to dump SIT entries.
-a SSA range
Specify a range presented by segment numbers to dump SSA entries.
-b block address
Specify a block address to retrieve its metadata information.
-d debug-level
Specify the level of debugging options. The default number is 0, which shows basic debugging messages.


Initial checking code was written by Byoung Geun Kim <>.


dump.f2fs is available from git://


mkfs.f2fs(8), fsck.f2fs(8), defrag.f2fs(8), resize.f2fs(8), sload.f2fs(8).