/usr/bin/veritysetup

veritysetup 2.8.8 flags: UDEV BLKID KEYRING FIPS KERNEL_CAPI HW_OPAL
Usage: veritysetup [OPTION...] <action> <action-specific>

Help options:
  -?, --help                           Show this help message
      --usage                          Display brief usage
  -V, --version                        Print package version
      --cancel-deferred                Cancel a previously set deferred device
                                       removal
      --check-at-most-once             Verify data block only the first time
                                       it is read
      --data-block-size=bytes          Block size on the data device
      --data-blocks=blocks             The number of blocks in the data file
      --debug                          Show debug messages
      --deferred                       Device removal is deferred until the
                                       last user closes it
      --error-as-corruption            Handle IO error as corruption.
      --fec-device=path                Path to device with error correction
                                       data
      --fec-offset=bytes               Starting offset on the FEC device
      --fec-roots=bytes                FEC parity bytes
      --format=number                  Format type (1 - normal, 0 - original
                                       Chrome OS)
  -h, --hash=string                    Hash algorithm
      --hash-block-size=bytes          Block size on the hash device
      --hash-offset=bytes              Starting offset on the hash device
      --ignore-corruption              Ignore corruption, log it only
      --ignore-zero-blocks             Do not verify zeroed blocks
      --no-superblock                  Do not use verity superblock
      --panic-on-corruption            Panic kernel if corruption is detected
      --restart-on-corruption          Restart kernel if corruption is detected
      --root-hash-file=STRING          Path to root hash file
      --root-hash-signature=STRING     Path to root hash signature file
  -s, --salt=hex string                Salt
      --shared                         Share data device with another verity
                                       segment
      --use-tasklets                   Use kernel tasklets for performance
      --uuid=STRING                    UUID for device to use
  -v, --verbose                        Shows more detailed error messages

<action> is one of:
	format <data_device> <hash_device> - format device
	verify <data_device> <hash_device> [<root_hash>] - verify device
	open <data_device> <name> <hash_device> [<root_hash>] - open device as <name>
	close <name> - close device (remove mapping)
	status <name> - show active device status
	dump <hash_device> - show on-disk information

<name> is the device to create under /dev/mapper
<data_device> is the data device
<hash_device> is the device containing verification data
<root_hash> hash of the root node on <hash_device>

Default compiled-in dm-verity parameters:
	Hash: sha256, Data block (bytes): 4096, Hash block (bytes): 4096, Salt size: 32, Hash format: 1