nbdkit-ddrescue-filter - nbdkit filter for serving from ddrescue dump
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 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.
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.
ddrescue-mapfile parameter must point to a valid GNU ddrescue mapfile.
The file pointed to by the
ddrescue-mapfile parameter should conform to the format of a GNU ddrescue(1) mapfile.
nbdkit --dump-config to find the location of
nbdkit-ddrescue-filter first appeared in nbdkit 1.22.
nbdkit(1), nbdkit-file-plugin(1), nbdkit-filter(3), ddrescue(1), https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html.
Copyright (C) 2020 François Revol
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