cryptsetup-convert(8) — Linux manual page


CRYPTSETUP-CONVERT(8)     Maintenance Commands     CRYPTSETUP-CONVERT(8)

NAME         top

       cryptsetup-convert - converts the device between LUKS1 and LUKS2

SYNOPSIS         top

       cryptsetup convert --type <format> [<options>] <device>

DESCRIPTION         top

       Converts the device between LUKS1 and LUKS2 format (if possible).
       The conversion will not be performed if there is an additional
       LUKS2 feature or LUKS1 has unsupported header size.

       Conversion (both directions) must be performed on inactive
       device. There must not be active dm-crypt mapping established for
       LUKS header requested for conversion.

       The --type option is mandatory with the following accepted
       values: luks1 or luks2.

       WARNING: The convert action can destroy the LUKS header in the
       case of a crash during conversion or if a media error occurs.
       Always create a header backup before performing this operation!

       <options> can be [--header, --type, --disable-locks].

OPTIONS         top

       --batch-mode, -q
           Suppresses all confirmation questions. Use with care!

           If the --verify-passphrase option is not specified, this
           option also switches off the passphrase verification.

       --debug or --debug-json
           Run in debug mode with full diagnostic logs. Debug output
           lines are always prefixed by #.

           If --debug-json is used, additional LUKS2 JSON data
           structures are printed.

           Disable lock protection for metadata on disk. This option is
           valid only for LUKS2 and ignored for other formats.

           WARNING: Do not use this option unless you run cryptsetup in
           a restricted environment where locking is impossible to
           perform (where /run directory cannot be used).

       --header <device or file storing the LUKS header>
           Use a detached (separated) metadata device or file where the
           LUKS header is stored. This option allows one to store
           ciphertext and LUKS header on different devices.

           For commands that change the LUKS header (e.g. luksAddKey),
           specify the device or file with the LUKS header directly as
           the LUKS device.

       --help, -?
           Show help text and default parameters.

       --type <device-type>
           Specifies required device type, for more info read BASIC
           ACTIONS section in cryptsetup(8).

           Show short option help.

       --version, -V
           Show the program version.

REPORTING BUGS         top

       Report bugs at cryptsetup mailing list
       <> or in Issues project section

       Please attach output of the failed command with --debug option

SEE ALSO         top

       Cryptsetup FAQ

       cryptsetup(8), integritysetup(8) and veritysetup(8)

CRYPTSETUP         top

       Part of cryptsetup project
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       the Cryptsetup ((open-source disk encryption)) project.
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       that time, the date of the most recent commit that was found in
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cryptsetup 2.8.0-git           2023-09-13          CRYPTSETUP-CONVERT(8)

Pages that refer to this page: cryptsetup(8)