VERITYTAB(5) veritytab VERITYTAB(5) (NAME) veritytab - dm-verity (SYNOPSIS) /etc/veritytab (DESCRIPTION) /etc/veritytab verity . "#" . verity . (whitespace) . : volume-name data-device hash-device roothash [options] . verity /dev/mapper/ . UUID= UUID. UUID= UUID. roothash ( ) () . udev "ID_DISSECT_PART_ROOTHASH=" ( ) . . : superblock=BOOL dm-verity (superblock) . 254. format=NUMBER . "0" Chrome OS . "1" . 254. data-block-size=BYTES . ( (page-size) .) 254. hash-block-size=BYTES . ( (page-size) .) 254. data-blocks=BLOCKS . . 254. hash-offset=BYTES / "hash-device". ( .) 254. salt=HEX (salt) . "-" . 254. uuid=UUID UUID . UUID UUID "12345678-1234-1234-1234-123456789abc". 254. ignore-corruption, restart-on-corruption, panic-on-corruption ( / data corruption) . IO I/O . --ignore-corruption () . --restart-on-corruption --panic-on-corruption ( /panic) . ( .) 248. ignore-zero-blocks . . . . 248. check-at-most-once . (offline) (online). . . 248. hash=HASH dm-verity. "sha1". veritysetup --help . 254. fec-device=PATH (FEC) . . fec device . fec device . : . verity data_device fec_device . 254. fec-offset=BYTES () FEC . ( .) 254. fec-roots=NUM (generator roots). (parity) . RS(M, N) M-N . M M-N ( ) . 254. root-hash-signature=PATH|base64:BASE64|auto Base64 "base64:" ( ) . "auto" udev "ID_DISSECT_PART_ROOTHASH_SIG=" ( Base64) . . . 248. _netdev veritysetup . systemd.mount(5) _netdev . veritysetup-pre.target veritysetup.target remote-fs-pre.target remote-veritysetup.target . : (mount point) fstab(5) _netdev . local-fs.target . 248. noauto veritysetup.target . . noauto . 248. nofail (hard dependency) veritysetup.target . . . nofail . 248. x-initrd.attach verity initrd systemd.mount(5) x-initrd.mount . x-initrd.mount x-initrd.attach verity systemd . . verity initrd . 248. tpm2-measure-nvpcr= (boolean) NvPCR . Verity ( ) . false . true NvPCR "verity" . NvPCR . 260. systemd-veritysetup-generator(8) systemd . (EXAMPLES) 1. /etc/veritytab verity. . usr PARTUUID=783e45ae-7aa3-484a-beef-a80ff9c19cbb PARTUUID=21dc1dfe-4c33-8b48-98a9-918a22eb3e37 36e3f740ad502e2c25e2a23d9c7c17bf0fdad2300b7580842d4b7ec1fb0fa263 auto data /etc/data /etc/hash a5ee4b42f70ae1f46a08a7c92c2e0a20672ad2f514792730f5d49d7606ab8fdf auto (SEE ALSO) systemd(1), systemd-veritysetup@.service(8), systemd-veritysetup- generator(8), fstab(5), veritysetup(8) systemd 261.2 VERITYTAB(5)