/usr/bin/fsck.erofs

Usage: /usr/bin/fsck.erofs [OPTIONS] IMAGE
Check erofs filesystem compatibility and integrity of IMAGE.

This version of fsck.erofs is capable of checking images that use any of the
following algorithms: lz4, lz4hc, deflate, zstd

General options:
 -V, --version          print the version number of fsck.erofs and exit
 -h, --help             display this help and exit

 -d<0-9>                set output verbosity; 0=quiet, 9=verbose (default=2)
 -p                     print total compression ratio of all files
 --device=X             specify an extra device to be used together
 --extract[=X]          check if all files are well encoded, optionally
                        extract to X
 --offset=#             skip # bytes at the beginning of IMAGE
 --nid=#                check or extract from the target inode of nid #
 --path=X               check or extract from the target inode of path X
 --no-sbcrc             bypass the superblock checksum verification
 --xattr-inode-digest   verify per-inode digests recorded as extended attributes
 --[no-]xattrs          whether to dump extended attributes (default off)

 -a, -A, -y             no-op, for compatibility with fsck of other filesystems

Extraction options (--extract=X is required):
 --force                allow extracting to root
 --overwrite            overwrite files that already exist
 --[no-]preserve        same as --[no-]preserve-owner --[no-]preserve-perms
 --[no-]preserve-owner  whether to preserve the ownership from the
                        filesystem (default for superuser), or to extract as
                        yourself (default for ordinary users)
 --[no-]preserve-perms  whether to preserve the exact permissions from the
                        filesystem without applying umask (default for
                        superuser), or to modify the permissions by applying
                        umask (default for ordinary users)