$ veritysetup format /dev/sda1 /dev/sda2
VERITY header information for /dev/sda2
UUID:                   bc64b55e-fd15-4c8a-bf12-567a35023330
Hash type:              1
Data blocks:            1543365
Data block size:        4096
Hash blocks:            12154
Hash block size:        4096
Hash algorithm:         sha256
Salt:                   b26fa7f056b1f18e0be1a276f82e735da0a025e4daeaf8de222ad9f0f3274ce8
Root hash:       ac74719989759849a4a87c281890f1b33532c26fa5580f1f5deaeef6d39351fe
Hash device size:       49786880 [bytes]
