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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 ] [ -I inode number ] [ -n NAT range ] [ -M Block map ] [ -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.


Specify an inode number to dump out.
Specify an inode number and scan full disk to dump out, include history inode block
Specify a range presented by nids to dump NAT entries.
Show all the allocated block addresses given inode number.
Specify a range presented by segment numbers to dump SIT entries.
Specify a range presented by segment numbers to dump SSA entries.
Specify a block address to retrieve its metadata information.
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).