The gzip Recovery Toolkit attempts to automate the recovery of data from corrupted gzip files (including tarballs) through a program called gzrecover. This package is still very experimental at this point.
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This release discontinues the patches to GNU tar to enable extracting from corrupt tar files in favor of using GNU cpio out of the box which does the same job better. The gzip recovery program is identical with previous releases.
This release contains two principal updates.
First, a change was made in the read strategy in
gzrecover. Previously, the corrupted gzip data
extractor program relied on mmap(2) to read files.
This has been changed to a buffered read strategy
which should allow support for any sized file as
well as platforms that don't allow files to be
memory mapped. Files sizes up to 168GB have been
tested. Second, the license on gzrecover has been
switched from the zlib license (a BSD variant) to
the GPL.
This new release fixes core dump problems with
truncated files. It also enables the "file
splitting" function where each segment of
recovered data is saved to its own output file.
