cryptsetup-convert(8) — Linux manual page

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

NAME

       cryptsetup-convert - converts the device between LUKS1 and LUKS2
       format

SYNOPSIS

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

DESCRIPTION

       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

       --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-locks
           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).

       --usage
           Show short option help.

       --version, -V
           Show the program version.

REPORTING BUGS

       Report bugs at cryptsetup mailing list
       <cryptsetup@lists.linux.dev> or in Issues project section
       <https://gitlab.com/cryptsetup/cryptsetup/-/issues/new>.

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

SEE ALSO

       Cryptsetup FAQ
       <https://gitlab.com/cryptsetup/cryptsetup/wikis/FrequentlyAskedQuestions>

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

CRYPTSETUP

       Part of cryptsetup project
       <https://gitlab.com/cryptsetup/cryptsetup/>. This page is part of
       the Cryptsetup ((open-source disk encryption)) project.
       Information about the project can be found at 
       ⟨https://gitlab.com/cryptsetup/cryptsetup⟩. If you have a bug
       report for this manual page, send it to dm-crypt@saout.de. This
       page was obtained from the project's upstream Git repository
       ⟨https://gitlab.com/cryptsetup/cryptsetup.git⟩ on 2024-06-14. (At
       that time, the date of the most recent commit that was found in
       the repository was 2024-06-11.) If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

cryptsetup 2.8.0-git           2023-09-13          CRYPTSETUP-CONVERT(8)

Pages that refer to this page: cryptsetup(8)

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