I am pleased to announce the release of tarlz 0.27.
Tarlz is a massively parallel (multi-threaded) combined implementation of
the tar archiver and the lzip compressor. Tarlz uses the compression library
lzlib.
Tarlz creates tar archives using a simplified and safer variant of the POSIX
pax format compressed in lzip format, keeping the alignment between tar
members and lzip members. The resulting multimember tar.lz archive is
backward compatible with standard tar tools like GNU tar, which treat it
like any other tar.lz archive. Tarlz can append files to the end of such
compressed archives. Tarlz protects the extended records with a CRC in a way
compatible with standard tar tools.
Keeping the alignment between tar members and lzip members has two
advantages. It adds an indexed lzip layer on top of the tar archive, making
it possible to decode the archive safely in parallel. It also reduces the
amount of data lost in case of corruption.
The homepage is at http://www.nongnu.org/lzip/tarlz.html
An online manual for tarlz can be found at
http://www.nongnu.org/lzip/manual/tarlz_manual.html
The sources can be downloaded from
http://download.savannah.gnu.org/releases/lzip/tarlz/
The sha256sum is:
d2e1a4091f120dc804e0166cac4a374386a4cb1a2d0d748b29097b7a13660dcb
tarlz-0.27.tar.lz
Changes in version 0.27:
* tarlz now prints seconds since epoch if a file date is out of range.
* tarlz now uses at least 4 digits to print years.
* 'tarlz -tv' now prints the value of typeflag after the member name for
unknown file types.
* tarlz now prints a diagnostic when it finds a corrupt tar header (or
random data where a tar header is expected).
* tarlz now diagnoses CRC mismatches in extended records separately.
* Multi-threaded decoding now prints diagnostics about CRC mismatches and
unknown keywords in extended records in the correct order.
* Many small fixes and improvements have been made to the code and the
manual.
* The chapter 'Creating backups safely' has been added to the manual.
(Suggested by Aren Tyr).
* Lzip is now required to run the tests because I have not found any
other portable and reliable way to tell compressed archives from non-compressed.
* Where possible, .tar archives for the testsuite are now decompressed
from their .tar.lz versions instead of distributed.
* 'make check' no longer tests '--mtime' with extreme dates to avoid test
failures caused by differences with the system tool 'touch'. (Reported by
Aren Tyr).
* 5 new test files have been added to the testsuite.
Please send bug reports and suggestions to [email protected]
Regards,
Antonio Diaz, tarlz author and maintainer.
--
If you know someone who is using gzip, bzip2, or xz, please tell him/her
about the advantages of switching to lzip. See
http://www.nongnu.org/lzip/manual/lzip_manual.html#Quality-assurance and
http://www.nongnu.org/lzip/lzip_benchmark.html Thanks
