GNU ddrescue 1.22 released

[Antonio Diaz Diaz]

I am pleased to announce the release of GNU ddrescue 1.22.

GNU ddrescue is a data recovery tool. It copies data from one file or 
block device (hard disc, cdrom, etc) to another, trying to rescue the 
good parts first in case of read errors.

GNU Ddrescuelog is a tool that manipulates ddrescue mapfiles, shows 
mapfile contents, converts mapfiles to/from other formats, compares 
mapfiles, tests rescue status, and can delete a mapfile if the rescue is 
done.

The homepage is at http://www.gnu.org/software/ddrescue/ddrescue.html

The sources can be downloaded from http://ftpmirror.gnu.org/ddrescue/ 
http://download.savannah.gnu.org/releases/ddrescue/ or from your 
favorite GNU mirror.

The sha1sum is:
df981672a612639ad0934e3fa6546a41d2feb99e  ddrescue-1.22.tar.lz

This release is also GPG signed. You can download the signature by 
appending ".sig" to the URL.

Changes in version 1.22:

  * The option '-X, --exit-on-error' has been replaced by '-X, 
--max-read-errors'. This introduces a backward incompatibility with 
versions 1.19 to 1.21 in that option '-X' now requires an argument. The 
long form '--exit-on-error' is still accepted, but will be removed in a 
future version of ddrescue.

  * The new option '--max-slow-reads' has been added. It makes ddrescue 
exit with status 1 if too many slow reads are encountered during the 
copying phase.

  * The new option '--delay-slow' has been added. It sets the initial 
delay before ddrescue starts checking for slow reads.

  * The new option '--reset-slow' has been added. It resets the slow 
reads counter every time the read rate reaches or surpasses 
'--min-read-rate'.

  * The new option '--log-events' has been added. It logs all 
significant events in a file, indicating the time, the percentage 
rescued, and a message describing the event.

  * The new option '--mapfile-interval' has been added. It changes the 
interval at which ddrescue saves and fsyncs the mapfile.

  * The new option '--pause-on-error' has been added. It makes (or 
simulates) a pause after each read error.

  * The option '--pause' has been renamed to '--pause-on-pass'.

  * The option '--max-errors' has been renamed to '--max-bad-areas'.

  * Ddrescue now shows the number of read errors, the error rate and 
(if a --min-read-rate is specified) the number of slow reads.

  * The 'current_pass' field has been added to the mapfile. This allows 
the copying phase to resume instead of restart from pass 1. It also 
allows the retrying phase to resume in the same direction it was 
interrupted.

  * Two new passes have been added to the copying phase. Sometimes 
there is a significant difference in read speed and likelihood of data 
recovery between blocks skipped due to slow areas, and blocks skipped 
due to read failures. Two passes have been inserted after pass 2 that 
read the blocks skipped due to slow areas (if any) before the final 
sweeping pass (which now is pass 5).

  * The '--cpass' option now accepts ranges of passes; '--cpass=1-4'.

  * The option '-K, --skip-size' now accepts sizes up to 1 EiB.

  * The initial skip size now defaults to (infile_size / 100_000) with 
a minimum value of 64 KiB.

  * The minimum read rate of good non-tried areas is no longer reduced 
after each pass, and now only affects passes 1 and 2.

  * During the trimming phase, if any edge of a non-trimmed block is 
already adjacent to a bad sector, it is considered as already trimmed 
and is not trimmed again.

  * The 's' multiplier may now be appended to any of the other 
multipliers. For example, 'ks' = kilosectors (1000 * sector_size), or 
'Kis' = kibisectors (1024 * sector_size).

  * Options '--ask' and '-vv' now always show file size, even if model 
and serial number are also shown.

  * Device model and serial number are now shown with '--ask' or '-vv' 
on Cygwin. (Patch written by Christian Franke).

  * The tried size (non-trimmed + non-scraped + bad-sector sizes) is 
now shown in the initial status.

  * The new option '-A, --annotate-mapfile' has been added to 
ddrescuelog. It adds comments to a mapfile containing the positions and 
sizes of the blocks in human-readable form.


Please send bug reports and suggestions to address@hidden


Regards,
Antonio Diaz, GNU ddrescue author and maintainer.

--
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