nbdkit-ddrescue-filter - nbdkit filter for serving from ddrescue dump

       François Revol

       Copyright (C) 2020 François Revol

       The file pointed to by the "ddrescue-mapfile" parameter should conform to the format of a GNU ddrescue(1)
       mapfile.

       "nbdkit-ddrescue-filter" is a filter for nbdkit(1) which overlays bad blocks according to a GNU
       ddrescue(1) mapfile.  This is mainly useful for testing disk images recovered with ddrescue, to detect
       which files or filesystem structures are impacted, or attempting fsck on them.

       Note that the current implementation is read-only.

       Expose a rescued disk image with detected bad sectors:
            nbdkit --filter=ddrescue file file=disk.img ddrescue-mapfile=disk.map

           The  above command serves the disk image disk.img and maps the bad sectors listed in disk.img so that
           read attempts on them do not return a valid block full of zeroes.

$filterdir/nbdkit-ddrescue-filter.so
           The filter.

           Use "nbdkit --dump-config" to find the location of $filterdir.

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nbdkit-1.42.2                                      2025-04-02                          nbdkit-ddrescue-filter(1)

       nbdkit-ddrescue-filter - nbdkit filter for serving from ddrescue dump

       The "ddrescue-mapfile" parameter must point to a valid GNU ddrescue mapfile.

nbdkit(1),              nbdkit-file-plugin(1),               nbdkit-filter(3),               ddrescue(1),
       https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html.

        nbdkit --filter=ddrescue plugin [plugin-args...]
                                        ddrescue-mapfile=file.map

        nbdkit --filter=ddrescue file file=file.img ddrescue-mapfile=file.map
                                      [plugin-args...]

       "nbdkit-ddrescue-filter" first appeared in nbdkit 1.22.