scdbackup

• Changelist
• Most recent frozen version
• Unresolved bugs
• Resolved bugs
• Future plans

• scdbackup-0.8.9.tar.gz
• Absolute links:
  http://scdbackup.webframe.org/scdbackup-0.8.9.tar.gz
  http://scdbackup.sourceforge.net/scdbackup-0.8.9.tar.gz

• 27 Nov 2007 | 0.8.8 0.8.9
  Most recent bug fix in 0.8.8
  Most recent bug fix in 0.8.9

  ---

• 02 Aug 2007 | 0.8.8
  Now stable :
  Multi-level restore of incremental backups.
  Recognition and configuration of new burn backends wodim and cdrskin.
  Protection against inclusion of buffer file or split file directory.
  Optional: optimized compilation.

  ---

• 30 Jul 2007 | 0.8.7
  Better protection against inadverted inclusion of the buffer file
  or the split file directory, by help of new option -not_inode.
• 06 Jun 2007 | 0.8.6 0.8.7
  Most recent bug fix in 0.8.6
  Most recent bug fix in 0.8.7
• 25 Mar 2007 | 0.8.7
  scdbackup with DVD automatically chooses between burn programs
  growisofs, cdrskin, wodim, and cdrecord.
• 10 Dec 2006 | 0.8.7
  scdbackup with CD automatically chooses between burn programs
  cdrecord, wodim or cdrskin. For DVD one may manually choose
  between growisofs, cdrecord, wodim. For both media, ISO formatting
  chooses between mkisofs and genisoimage. See README
  appendice ISO, CD, DVD.
• 05 Dec 2006 | 0.8.6 0.8.7
  After cdrecord-2.01.01a12 and before 2.01.01a21 the output
  of option -atip has changed. scdbackup now recognizes CD-RW
  media correctly with either of the two -atip styles.
• 29 Jun 2006 | 0.8.7
  Command scdbackup_askme is now able to restore files from
  multi-level backups in ISO-9660 format to their original
  or to alternate locations.
• 12 May 2006 | 0.8.7
  Command scdbackup_askme is now able to load an incremental backup
  configuration and to do shell-like searches on all levels and volumes.
  See README "Backup Information+Restore Tool" and
  examples.html#locate_incr of version 0.8.7.
• 22 Mar 2006 | 0.8.7
  It is now possible to apply compiler optimization.
  See README appendix TUNING.

  ---

• 29 Jan 2006 | 0.8.6
  Now stable :
  Backup volumes sorted by alphabetical order of files.
  Preparations for disaster recovery (see README appendix RECOVERY)
  Options to record ACLs and/or Extended File Attributes.
  Incremental backup composition has become much faster.
  Handling of large and unfriendly shaped trees has become faster.
  Installation directory structure more flexible (up to FHS).

  ---

• 19 Jan 2006 | 0.8.5
  growisofs 6.0 is out and it has an own fifo. With growisofs >=6
  the scdbackup fifo now gets disabled by ./CONFIGURE_DVD
  and the growisofs fifo is set to 16 MB by option bufsize=16m
• 29 Dec 2005 | 0.8.5
  growisofs is now fed via a fifo buffer of 16 MB. Change fs=16m
  in file sdvdbackup_cdrecord_opt_value to fs=0 in order
  to disable this new feature.
• 11 Dec 2005 | 0.8.5
  For burning of CD-R and CD-RW an alternative writer program has
  been made available : cdrskin based on libburn (see usage examples.)
• 02 Nov 2005 | 0.8.5
  The inode method of incremental backups is now the default with
  -level -create_configuration. See README appendix INODE.
• 23 Oct 2005 | 0.8.5
  Composition is now done alphabetically. This might cause larger
  automatically generated backup scripts. To get back the old
  method use -composition_mode bestfit
• 05 Oct 2005 | 0.8.5
  Most recent bug fix in 0.8.5
• 05 Oct 2005 | 0.8.5
  A more economical method of file checking is used.
  The crawler unites generation of various file lists,
  file checking, incremental decision making and optionally
  backup composition. This should help much if there
  is not enough RAM to cache the filesystem tree structure.
  (Disable by -test_command do_not_use_crawler).
• 20 Sep 2005 | 0.8.5
  Option pair -pipe_to_media -multi_volume
  allows to chop large archive streams onto media.
• 24 Aug 2005 | 0.8.5
  As an alternative to archive format afio, one may now use the
  archiver star. See README, look for star_as_afio_wrapper.
• 14 Aug 2005 | 0.8.5
  Inspired by an encounter with Joerg Schilling's program star
  a time saving alternative to "crc" or "md5" content checking
  is provided via device and inode number comparison.
  See README, appendix TUNING, paragraph "Inode Method".
• 23 Jul 2005 | 0.8.4
  Most recent bug fix in 0.8.4
• 12 May 2005 | 0.8.5
  New options -facl_list_adr and -fattr_list_adr
  allow recording of ACLs resp. Extended File Attributes in lists
  which may be used by programs setfacl resp. setfattr
  See cd_backup_planer -help and README appendix ATTRLIST.
• 02 May 2005 | 0.8.5
  afio backups may now be encrypted. See README, appendix CRYPTO.
• 23 Apr 2005 | 0.8.5
  File objects may be distributed over the backup volumes not only
  by best size fit but also by alphabetical or chronological order.
  This is controled by new option -composition_mode.
• 26 Feb 2005 | 0.8.5
  Directories which have been subject to splitting are now
  recorded as archive items in afio volumes if some of their
  sub objects are part of the volume. The '/' directory will
  never be recorded as archive item, though.
  Many thanks to Chris Gianniotis.
• 05 Feb 2005 | 0.8.5
  New structure of installation directory with several second
  level directories of which only two are mandatory to be
  writeable at backup time (./tmp and ./logs).

  ---

• 05 Feb 2005 | 0.8.4
  Now stable : automatic blanking of DVD-RW,
  checksum information stored on backup media,
  redundant and repairable backups,
  optional use of cdrecord-ProDVD.

  ---

• 14 Jan 2005 | 0.8.2 , 0.8.3
  Most recent bug fix in 0.8.2
  Most recent bug fix in 0.8.3
• 24 Dec 2004 | 0.8.3
  Redundancy writer script mxn_wrapper .
  The new README appendix REDUNDANCY explains how to produce
  redundant backups which provide spare blocks and checksums
  in order to be recoverable if the media are partly damaged.
• 04 Dec 2004 | 0.8.3
  Preparing for long term backups with block checksum lists and the
  possibility to restore an undamaged backup volume from several partly
  damaged media, which once were identical copies of each other.
• 27 Oct 2004 | 0.8.3
  It is now possible to use cdrecord-ProDVD without a buffer file.
  But without such a file any DVD gets written up to the maximum
  and therefore needs the same time as if it contained 4.5 GB.
• 10 Oct 2004 | 0.8.3
  A donation of various media by Mike Evans enabled me to test
  the behavior of growisofs and cdrecord-ProDVD with media other
  than DVD+RW.
  This led to the introduction of automatic blanking for the
  DVD backup commands. So ./CONFIGURE_DVD now asks
  one additional question. The blanking procedure has been
  overhauled and now should handle the possible combinations
  of media and writer programs properly. If it goes on strike
  with particular media, please contact me.
• 10 Sep 2004 | 0.8.3
  New option -pipe_to_media of write commands scdbackup
  resp. sdvdbackup directs stdin to a single CD resp. DVD.
  This allows new script pipe_to_ssh to forward the backup data
  stream to a remote scdbackup installation. See README Appendix NET.
• 04 Sep 2004 | 0.8.3
  New option -filter_checksum_padsize adds one or more checksum
  tags to the bytestream after checksum computation. The first of these
  tags may be found by new option -scan_for_checksum.
  Both features are enabled by default now.
  Thus commands s*backup_verify -auto can verify volumes made
  by the new program version without needing a checksum list file.

  ---

• 30 Aug 2004 | 0.8.2
  Enhanced security and data safety features declared stable.
  Many thanks to Andy Polyakov, Joerg Schilling, Volker Kuhlmann,
  and the bug catchers as listed below.

  ---

• 27 Aug 2004 | 0.8 0.8.1
  Most recent bug fix in 0.8
  Most recent bug fix in 0.8.1
• 24 Aug 2004 | 0.8.1
  It is now possible to configure DVD for cdrecord-ProDVD
  rather than for growisofs. Nevertheless, there seems to be no other
  way to use it without a 4.5 GB buffer than padding up generously.
• 19 Aug 2004 | 0.8.1
  New general options -version , -where , -which if given as
  the only argument to any of the commands, return on stdout :
  scdbackup version timestamp, scdbackup directory, effective worker script.
  Symbolic links are now enabled as input for mkisofs 2.0 or newer.
• 17 Aug 2004 | 0.8.1
  Installation instructions in README and examples.html have been
  overhauled. It is now possible to install scdbackup without any
  superuser authority.
  The backup script is now able to detect failures of mkisofs which up
  to now were hidden by its position in pipes. Unless file
  scdbackup_exit0_if_burn_failed exists, the backup run will
  abort in such a case.
• 15 Aug 2004 | 0.8.1
  A failed burn should now abort the whole backup run and advise
  to restart with -resume as soon as the problem is solved.
  Locking may now be done in an arbitrary directory outside the
  installation directory. Info script ASKME is now created in the
  tmp directory of the installation rather than in the user's $HOME
  directory. Language may be switched between english and german
  per user. Automatically created backup scripts now have the same
  (english) name in both dialog languages.
• 08 Aug 2004 | 0.8.1
  New script ./SET_PERMISSIONS and quite restrictive default
  settings during ./CONFIGURE_* .
• 07 Aug 2004 | 0.8 0.8.1
  The amount of padding with writing CD or DVD has been increased
  to 300 kB. This became necessary because new drives and drivers
  fail to read data at the end of a CD even more than old ones.
• 04 Aug 2004 | 0.8.1
  The intermediate scripts like volume_preburn_script now got specialized
  siblings like volume_preburn_script_cd and volume_preburn_script_dvd.
  The CD specific command scripts like scdbackup have been divided from
  the general backup tasks like burning a set of ISO media. The old
  command scripts are deprecated but may still be installed by
  ./SUPERUSER_CONFIGURE -install_old_style
• 30 Jul 2004 | 0.8.1
  If automatic blanking is set then it is not necessary any more to
  manually blank second and further CD-RWs of an oversized afio volume.
  Handling of large files is now configurable within ./CONFIGURE_CD and
  ./CONFIGURE_DVD. Another input prompt. (sigh)
• 11 Jul 2004 | 0.8.1
  Together with -split_large_files it is now possible to
  include raw block devices by option -special_file.
  Wether a restored copy of a block device will work or not, depends
  much on the meaning of the content and the similarity of the restore
  environment in respect to the source environment. (E.g.: Consider
  /etc/fstab in a partition image which moves from /dev/hda3 to /dev/hdb2.)
• 26 Jun 2004 | 0.8.1
  Previously idle sdvdbackup_blank now got a job.
  It overwrites DVD media with pseudo random bytes in order to make
  the old data content unreadable. Privacy issue : It is easy to read
  old backup remains from a DVD until they really get overwritten.
• 12 Jun 2004 | 0.8.1
  New options -split_large_files,-cut_file,-split_list_adr
  as a first attempt to provide a solution to the various problems with
  large files. Still a lot of work to do.
• 3 Mar 2004 | 0.8.1
  afio compression can now be used independendly of file buffering by
  setting environment variable SCDBACKUP_AFIO_COMPRESS either
  to "0" or to "1". If the variable is empty or contains "-" then
  afio compression is triggered by buffering.
  For use of afio with compression but without buffer file you will need
  either a fast processor and disks or writer hardware which tolerates
  buffer underruns, such as DVD+RW or BURN-Proof CD-RW. It is wise
  to reduce writing speed.

  ---

• 2 Mar 2004 | 0.8

  New as (hopefully) stable features :

  Verification of write success and media readability

  Set of commands for writing on DVD

  Incremental backups enhanced by checksums, list of vanished files

  Large File Support (depending on afio and mkisofs and operating system)

  Simplified upgrade from previous versions by FETCH_CONFIGURATION

  With incremental backups -max_size and some other options can be overridden

  Special thanks to Andy Polyakov for creating dvd+rw-tools as well as
  Dirk Lison and Karsten Lengwenus for testing the new commands with
  their DVD writers.

  ---

• 05 Dec 2003 | 0.7
  Most recent bug fix in 0.7 .
  There was a blind spot of one hour with incremental backups during
  daylight saving time. If you made incremental backups then better
  do a -level 1 now.
• 07 Nov 2003 | 0.7.1
  From now on the C programs get compiled with Large File Support to be
  able to handle file sizes over 2 GB.
  Important: If you really have files larger than 2 GB you will also need
  very recent versions of mkisofs (cdrtools-2.01a19) and/or afio
  (afio-2.4.7.9beta4) which can handle such files.
  Be aware that possibly the ISO file system driver of your operating system
  is not ready for reading large files. Make a test to be sure.
• 07 Nov 2003 | 0.7.1
  The size determination for planning of backups in format afio is now
  done more accurately by an internal function. If you need the old behavior
  add option -dir_size_cmd 'du -sk' to your backup command.
• 29 Aug 2003 | 0.7.1
  The scripts for restoring directory permissions and for removing obsolete
  (vanished) files now use the target addresses and not the source addresses
  of their file objects. The lists of content and directory properties now
  contain both, source and target addresses. New options -delete_targetlist
  and -verify_targetlist can make use of the target addresses.
• 23 Aug 2003 | 0.7.1
  New option-max_size_stack allows to handle situations with media
  of different sizes.
• 14 Mar 2003 | 0.7.1
  The text dvd_hack.txt explains how to use Andy Polyakov's
  program growisofs to write backups on DVD+RW with more
  than 4 GB of capacity.
• 17 Jan 2003 | 0.7.1
  Inspired by Alex Pozgaj a command for verifying result CDs has
  been introduced: scdbackup_verify. It uses a list of
  checksum records to compare the output of a CD with the former output
  of mkisofs or afio during the backup run. See its -help text.
  cd_backup_planer learned to act as a filter which determines
  length and checksum of the data of a backup volume. New options are :
  -filter_md5 -filter_crc32 -compare_checksum
  -list_checksum -search_md5
  Since some CD-reading devices have trouble to read all bytes from a CD,
  option -pad needed to be added to file
  scdbackup_cdrecord_opt_value (see also: man cdrecord).
• 1 Jan 2003 | 0.7.1
  ./CONFIGURE now examines locally installed cdrecord
  and mkisofs to advise the user wether to prefer them
  over the old binaries from the scdbackup package. It automatically
  detects wether mkisofs needs option -graft-points or
  if it knows option -path-list .
• 28 Dec 2002 | 0.7.1
  Various new options of cd_backup_planer enable
  incremental backups to detect changes even if the timestamps
  do not indicate them. These options are :
  -changetest_options , -complete_list_adr , -content_list_adr ,
  -list_output_format , -load_old_tree , -vanish_list_adr ,
  -vanish_script_adr.
  Other new options are
  -disable_safe_leveling , -working_directory.
  Some of these options are now automatically set by ./CONFIGURE
  and cd_backup_planer -level -create_configuration.
• 13 Apr 2002 | 0.7.1
  The new program saskme and its start script scdbackup_askme
  speed up finding of files in large ASKME scripts. They also provide
  search with regular expressions and a dialog mode.
  See text scdbackup_askme_help for details.
• 7 Apr 2002 | 0.7.1
  Option -form_path_list_mkisofs allows to use option
  -path-list which is available with newer versions of mkisofs.
  With this output format a very large setting of -max_items
  is permittable.
• 7 Feb 2002 | 0.7.1
  CONFIGURE now can prepare for cooperation with burnproof recorders.
  Needs installed cdrecord-1.9 or newer. Answer "b" or "gb" to
  question "Use mkisofs_prog and cdrecord_prog ?".

  ---

• 15 Nov 2001 | 0.7
  Incremental backups with an arbitrary number of levels. Option
  -conf_dir chooses a particular configuration. Option
  -level chooses an update level. The ASKME script of
  an update may use the ASKME scripts of lower levels to locate
  a file.

  ---

• 03 Nov 2001 | 0.6.1
  CONFIGURE now can prepare for cooperation with mkisofs from
  cdrtools-1.10. To question "Use mkisofs_prog and cdrecord_prog ?"
  answer "g" rather than "n" in order to get mkisofs option
  -graft-points and to omit Option -J.
• 20 Oct 2001 | 0.6.1
  scdbackup-0.6.1.tar.gz does no longer contain binaries of the included
  C programs. Binaries of cdrecord and mkisofs are still provided.
• 28 Dec 2000 | 0.6.1
  A new option -last_volume_count prints the number of volumes
  in the most recently prepared backup. Together with some other changes
  it is now possible to control the planning of a backup and the creation
  of its volumes by shell scripts and to perform own activities in between.
  See outer_loop
• 12 Dec 2000 | 0.6.1
  Provisions to create particular volumes independently.
  A new option -prepare_only prevents immediate start of
  the first volume. A - before the number given with -resume
  creates only that volume number and not the following ones.
  There should be no more obstacle to create several volumes
  simultaneously.
• 12 Sep 2000 | 0.6.1
  Some bugfixes and new options in cd_backup_planer.c .
  Two of them may be used as options of scdbackup* :
  -accept_all_filetypes , -localdev
  Two others help to use cd_backup_planer for other purposes :
  -form_raw , -volume_info
• 26 Jun 2000 | 0.6.1
  Bugfixes in cd_backup_planer.c . Many thanks to Volker Apelt
  and Jake Hamby who not only discovered them but also sent
  corrections.
  A new parameter in ./CONFIGURE can set an installation
  directory other than /usr/local (in my new SuSE 6.4 there
  is no /usr/local/sbin).
• 5 Feb 2000 | 0.6.1
  A first attempt on incremental backups: -younger_than
  See cd_backup_planer -help for details.

  ---

• 19 Jan 2000 | 0.6
  Former version 0.5.3 with adjusted documentation.

  ---

• 12 Jan 2000 | 0.5.3
  The script change_shell_to_use
  contains hints and commands for changing the shell if /bin/sh is not
  suitable on your system. (There has been made a Solaris port by
  James Craig Ostheimer and he experienced that $(...) was not recognized
  by his /bin/sh.)
• 18 Dec 1999 | 0.5.3
  When creating ISO9660 filesystems, the characters ~ and #
  in file names can now be replaced by +23+ resp. +7E+ .
  Enabled by option -filecheck -append_hexcode
• 0.5.3
  Multi-volume afio archives are possible now. They are automatically created
  if a piece does not fit on a single CD. Use -max_size 1000g to
  create a single multi-volume archive rather than multiple single-volume archives.
  About the multi-volume technology
  scdbackup_home now accepts the options of cd_backup_planer
  like the other commands
  New option -scattering -on enables better usage of -max_size
  New option -xdev excludes all filesystems which are mounted
  below the items of the backuplist

  ---

• 14 Dec 1999 | 0.5.2
  Changed in cd_backup_command : from $@ to "$@"
• 09 Dec 1999 | 0.5.2
  Replaced usage of find by cd_backup_planer -find
• 08 Dec 1999 | 0.5.2
  Replaced the usage of var=$(line) by read var
• 0.5.2
  Restartability of interupted backups. ( scdbackup -resume )
  The awkward default combination of backup script and information script is
  now replaced by a random access function. An information script is only
  generated when stated explicitely with -info_script .

  ---

• 0.5.1
  Better balanced distribution over CDs ( cd_backup_planer -min_size_percent )
  but too ill. This is working now in 0.5.2 .
• 07 Dec 1999 | 0.5
  Initial release and announcement on freshmeat.net
  (scroll down about 40% of page, regrettably the freshmeat database
  shows a modern project description with DVD and incremental backup.).

• scdbackup-0.8.8.tar.gz
• Absolute link: http://scdbackup.webframe.org/scdbackup-0.8.8.tar.gz
• Absolute link: http://scdbackup.sourceforge.net/scdbackup-0.8.8.tar.gz

Unresolved bugs:

• 22 Jan 2000 | 0.5.2 (maybe 0.5.3) |
  The file object /root/.kde/share/apps/kmp3/unique_fifo
  causes the program to hang. The type of this object is yet unknown
  (since i do not have KDE installed).
  Workaround: explicitely exclude this file if it exists on your system.

Resolved bugs:

• 27 Nov 2007 | 0.8.8 , 0.8.9 | corrected after 2007.11.27.100001
  A uninitialized pointer could cause a SIGSEGV in the checksum filter.
  An uninitialized text could cause a flickering pacifier line.
  This showed up when compiling optimized on a 64-bit system.
• 06 Jun 2007 | 0.8.6 , 0.8.7 | corrected after 2007.06.06.140000
  When reading content lists of incremental backups the device
  numbers of regular files were ignored. If their directories were
  not recorded in the list, they were backuped unconditionally.
  Many thanks to Shesh.
• 15 Jan 2007 | 0.8.6 , 0.8.7 | corrected after 2007.01.15.110000
  DVD burns did not get appended their usual 300 kB of padding
  if program growisofs was too old to have an own fifo and thus
  the one of program raedchen was used.
  Many thanks to JT Moree.
• 31 Dec 2006 | 0.8.7 | corrected after 2006.12.31.133000
  Content lists which were made by backup runs while the working
  directory was "/" caused a SIGSEGV with scdbackup_askme.
  Many thanks to Shesh.
• 28 Sep 2006 | 0.8.6 , 0.8.7 | corrected after 2006.09.28.150000
  Directories with no access permission caused abort of filecheck
  or even the whole program.
• 28 Sep 2006 | 0.8.6 , 0.8.7 | corrected after 2006.09.28.150000
  Files of unknown type did not get into the vanish list and thus
  caused errors when their hosting directory was to be deleted from
  the model.
• 10 Sep 2006 | 0.8.6 , 0.8.7 | corrected after 2006.09.20.110000
  The incremental list formats did not stand filenames with newlines.
  Because all use methods of volume formatters like mkisofs or afio
  cannot cope with such addresses either, they get excluded from
  backup now by default. 0.8.7 will learn to handle them but the
  formatter problems will be hard to solve.
• 09 Aug 2006 | 0.8.6 , 0.8.7 | corrected after 2006.08.09.120000
  With incremental backups, large files which became split also
  tried to join the backup in full size. If this attempt succeeded
  they might be worthless. Do always restore from the split parts.
• 29 Jun 2006 | 0.8.6 , 0.8.7 | corrected after 2006.06.29.160000
  Large files which got split into parts did not show up in the
  split file list of the backup. Automatic blanking did recognize
  [+-]R media but then aborted rather than just to omit blanking.
  Many thanks to Shesh and to MFaya.
• 14 Jun 2006 | 0.8.6 , 0.8.7 | corrected after 2006.06.14.090000
  Directories with names longer than 80 characters confused
  reading of the incremental tree model and led to overly fat
  incremental backups. Many thanks to MFaya.
• 12 Jun 2006 | 0.8.6 , 0.8.7 | corrected after 2006.06.12.160000
  A buffer overflow with -dir_list_adr staid hidden until compiled
  with -O2. It spoils the complete_dir_list.gz which is not used
  by version 0.8.6 but will become important in 0.8.7 and later.
• 22 May 2006 | 0.8.6 , 0.8.7 | corrected after 2006.05.22.090000
  A change of -exclude_size or -split_list_adr
  in the configuration files or variables was not neatly propagated
  to incremental backups. Large files stayed excluded.
• 02 Apr 2006 | 0.8.6 , 0.8.7 | corrected after 2006.04.02.120000
  If splitting of oversized files was activated then those files
  were included in any incremental backup regardless of their age.
  Many thanks to Thomas Tenaglia.
• 22 Mar 2006 | 0.8.6 , 0.8.7 | corrected after 2006.03.22.120000
  Compiler optimization experiments revealed ambiguous code.
• 20 Feb 2006 | 0.8.6 , 0.8.7 | corrected after 2006.02.20.110000
  A typo caused a SIGSEGV on 64-bit systems with 32-bit int type.
  Many thanks to Jan Trautmann.
• 05 Oct 2005 | 0.8.5 | corrected after 2005.10.05.155605
  The readability test was not performed properly. This bug is very
  old (about juli 2000) and seems not to have disturbed anybody
  probably because modern mkisofs ignores unreadable files.
  So it will not be corrected in 0.8.4. In scdbackup 0.8.5
  -filecheck -exclude and -filecheck -off
  have been made equivalent. -filecheck -exclude_unreadable
  now does what -exclude promised but never kept.
• 23 Jul 2005 | 0.8.4 , 0.8.5 | corrected after 2005.07.23.190000
  If the /-directory was given as argument to an incremental backup
  configuration then all files were considered to be new and so
  every level of the backup contained the full backup area.
  Many thanks to Milos Prudek.
• 11 Jul 2005 | 0.8.4 , 0.8.5 | corrected after 2005.07.11.070000
  Checksum computations of incremental backups read the data content
  of block devices rather than their properties. The backups are ok
  but checksum computing of /dev/hda was quite a waste of time.
  Many thanks to Milos Prudek.
• 26 May 2005 | 0.8.4 , 0.8.5 | corrected after 2005.05.26.200000
  Levels 2 and above of incremental backups reported errors or even
  failed if between previous levels files vanished which had the
  character "=" in their addresses. Incremental backups failed if
  data files were replaced by directories with the same address.
  Better redo your backups from level 0 after installing the
  corrected software.
  Many thanks to Milos Prudek.
• 23 Apr 2005 | 0.8.5 | corrected after 2005.04.23.100000
  scdbackup_afio left files ./tmp/afio_return_*
• 23 Apr 2005 | 0.8.4 | corrected after 2005.04.23.100000
  The german language version of scdbackup_verify did
  not contain the bug fix of 18 Mar 2005.
• 20 Apr 2005 | 0.8.4 , 0.8.5 | corrected after 2005.04.20.180000
  Incremental backups of level n>=2 aborted if a directory
  had vanished between level n-2 and n-1.
  Many thanks to Milos Prudek.
• 27 Mar 2005 | 0.8.4 , 0.8.5 | corrected after 2005.03.27.160000
  The backup commands returned exit value 0 even if they failed.
• 19 Mar 2005 | 0.8.4 , 0.8.5 | corrected after 2005.03.19.150000
  The bugfix below produced a file ./tmp/verify_return_* with each
  run. Those files might clog the ./tmp directory.
• 18 Mar 2005 | 0.8.4 , 0.8.5 | corrected after 2005.03.18.160000
  Although the messages of scdbackup_verify correctly
  indicated eventual failure, the exit value of the command was
  always 0 and therefore could mislead user programmed scripts.
  Many thanks to Tony Gaddis.
• 16 Mar 2005 | 0.8.4 , 0.8.5 | corrected after 2005.03.16.170000
  Program cd_backup_planer.c did not compile without
  -D_LARGEFILE_SOURCE thus breaking script change_shell_to_use
  Many thanks to Robert Lunnon.
• 08 Feb 2005 | 0.8.4 | corrected after 2005.02.08.230000
  Caused by a surplus semicolon, cd_backup_planer.c did not compile
  with older gcc. Many thanks to Billy Coleman.
• 14 Jan 2005 | 0.8.2 , 0.8.3 | corrected after 2005.01.11.210455
  ./FETCH_CONFIGURATION refused to work if the old installation
  of scdbackup was not configured for writing CDs.
  Many thanks to Rafael R. Pappalardo
• 05 Dec 2004 | 0.8.2 , 0.8.3 | corrected after 2004.12.05.120000
  Handling of large files did only work via configuration variables
  but not via configuration files.
  If you used a split directory for burning DVD then better check your
  backups wether there are unsplit large files. You may have to redo such
  backups in order to avoid problems with reading the large files.
  If you burned CDs you should have noticed the rejection messages.
  As another bug, the messages about the rejected unsplit files
  were printed before the output of option -last_volume_count.
  Many thanks to Tony Gaddis.
• 21 Nov 2004 | 0.8.2 | corrected in 0.8.2 after 2004.11.21.130555
  The example script in README appendix NET did not take care to set
  variable bdir for a remote growisofs_wrapper script. So the script
  did only work with remote cdrecord binaries.
  Many thanks to Mark Vytlacil.
• 29 Sep 2004 | 0.8.2 , 0.8.3 | corrected in 0.8.2 and 0.8.3 after 30 Sep 2004
  When configuring use of a buffer file for CD or DVD , afio compression
  was disabled by mistake. One may override that by
  export SCDBACKUP_AFIO_COMPRESS=1 ( resp. SDVDBACKUP_...).
  Many thanks to Mike Evans.
  If a buffer file was configured, scdbackup_blank shred
  failed. Workaround: export SCDBACKUP_BUFFER="-".
• 11 Sep 2004 | 0.8.3 | corrected in 0.8.3 after 12 Sep 2004
  When upgrading from version 0.8 or 0.8.2 ./CONFIGURE_CD and
  ./CONFIGURE_DVD did not set the option to write checksum tags.
  Remedy: unpack new 0.8.3 and rerun ./CONFIGURE_*.
• 26 Aug 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 27 Aug 2004
  Incremental backups of relative adresses were not done properly.
  Same was true for directory addresses with a trailing "/".
  All files were included regardless of age or checksum.
  Commands scdbackup_home and sdvdbackup_home
  were affected.
  With version 0.8 do not use above address styles in incremental backups.
  Both 0.8 *_home commands have been changed to use absolute addresses.
  Eventually rerun them with -level -update_configuration.
  Many thanks to Marco.
• 14 Aug 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 15 Aug 2004
  Option -accept_all_filetypes (used automatically with afio
  formatted backups) did not work properly when directories had to be
  splitted. All files in such a directory which were not data files or
  directories have been skipped. Although this is not very probable with
  a system backup - better redo it with the repaired programs.
  Many thanks to Tony Charles.
• 07 Aug 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 09 Aug 2004
  Preparing the content list of an incremental backup stalled
  at the first named pipe encoutered. The checksum generator
  waited patiently for somebody to talk into that named pipe.
  Many thanks to Tony Charles.
  A questionable C construct of mine has been exposed by a questionable
  output of gcc on PPC Linux. The remedy was to clean up my part.
  It happened to be the same function as with above named pipe bug. So
  i decided to introduce the change into (not so) stable version 0.8.
  Many thanks to Mike Evans
• 19 Jul 2004 | 0.8.1 | corrected in 0.8.1 after 20 Jul 2004
  With -split_large_files the first part of any large file
  was missing if the file was not given explicitely as argument.
  If you alread used -split_large_files then better redo
  the backups or check carefully wether your backups are affected.
• 30 Jun 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 02 Jul 2004
  Defining a new incremental backup by option
  -level -create_configuration led to a double sized
  backup. -level -update_configuration was ill, too.
  The resulting definitions are ok, nevertheless. There was no
  problem with subsequent -level 0 or any higher level.
  Many thanks to Samuele E. Locatelli.
• 22 Jun 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 24 Jun 2004
  Since the various users of an scdbackup installation produced the same
  temporary files there could occur problems when overwriting them
  (depends on directory sticky bit and variant of command rm).
  As preliminary solution the names of automatically created scripts and
  lists now get appended the content of environment variable EUID.
  If you manually change s*backup_path_list_value, then make sure it
  contains a name with "mkisofs_path_list" where "_"$EUID will get
  appended or a text mark "=EUID=" for which $EUID will get substituted.
  If your shell does not automatically set EUID, you may write one into
  file $HOME/.scdbackup_userid. Set a different id number for each user.
  Find inspiration in /etc/passwd.
  Many thanks to Dirk Heutzeroth.
• 23 May 2004 | 0.8 , 0.8.1 | corrected in 0.8 and 0.8.1 after 24 May 2004
  Locking and DVD-speed "any" did not work well together :
  Runtime error (func=(main), adr=15): Divide by zero
  .../scdbackup-0.8/temp_lock : unknown option -lifetime
  The problem was in scripts lock and refresh
  when dividing by $factor.
  Many thanks to Florian Reichert.
• 09 Feb 2004 | 0.7.1 , 0.8 | corrected in 0.8 after 09 Feb 2004
  When redirecting a symbolic link which was given explicitely as
  argument to its original data source the target was changed too.
• 20 Jan 2004 | 0.7.1 | corrected in 0.7.1 after 20 Jan 2004
  The wrapper scripts *_dvd of the DVD hack did not pass arguments
  like -resume or -help properly to the scdbackup* commands.
  Many thanks to Dirk Lison.
• 05 Dec 2003 | 0.6.1 , 0.7 , 0.7.1 | corrected in 0.7 , 0.7.1 after 05 Dec 2003
  Timecode strings like "061211362003" or "A30612.1136" were converted
  without taking into respect daylight saving time. So during summer the
  timecodes generated by an incremental backup left a gap of one hour
  when used with the next backup level.
• 04 Nov 2003 | all versions | corrected in 0.7.1 after 7 Nov 2003
  scdbackup_sys and scdbackup_afio use program du
  for determining the size of a directory tree. In case of a sparsely filled
  file du might return much less bytes than afio will need for
  the copy in its archive. Not a fault of du but a wrong choice by me.
  A function for size determination is now built into version 0.7.1 :
  -dir_size_cmd -internal . It seems that -dir_size_cmd 'du -sk'
  is up to three times faster but less accurate even with well filled files.
  The new internal function is now used by default.
• 29 Aug 2003 | 0.7.1 | corrected in 0.7.1 after 29 Aug 2003
  ./CONFIGURE issued a confusing message and ignored the
  existence of locally installed mkisofs if this mkisofs did not
  understand the option -version.
• 22 Aug 2003 | 0.7.1 | corrected in 0.7.1 after 29 Aug 2003
  The various file lists did not reflect the possible mappings from
  source addresses to target addresses. Therefore it would be cumbersome
  to restore layered backups by help of these lists and scripts.
• 29 Jul 2003 | 0.7.1 | corrected in 0.7.1 after 29 Jul 2003
  The slow but more accurate method of precomputing the size of afio
  backups was broken because of a change in the output format of
  program raedchen . An error message appeared :
  expr: non-numeric argument
  Many thanks to Chris Gianniotis.
• 23 Jul 2003 | 0.7.1 | corrected in 0.7.1 after 24 Jul 2003
  Relative source addresses like mnt/my_file were not checked properly
  by filter option -verify_sources . They were reported as
  "--- missing :" with empty addresses and excluded from the backup.
  Many thanks to Rocky Essing.
• 3 Jun 2003 | 0.7.1 | corrected in 0.7.1 after 4 Jun 2003
  Incremental backup planning ended with SIGSEGV if there had been
  vanished files recorded two levels below.
• 3 Apr 2003 | 0.7.1 | corrected in 0.7 and 0.7.1 after 4 Apr 2003
  When upgrading from a previous version of scdbackup the script
  SUPERUSER_CONFIGURE used the settings and programs in the old
  version's directory rather than those in the current directory.
  Version 0.7.1 complains about a missing file and bad sed expressions.
  Many thanks to Pierre Maziere.
• 30 Jan 2003 | 0.7.1 | corrected in 0.7 and 0.7.1 after 31 Jan 2003
  The more exact method for determination of the size of compressed
  afio archives was not ready for directory names which contain blanks.
  Also, the files askme_example and verify_beispiel
  were missing in the tarball of 0.7.1.
  Many thanks to Philipp Becker.
• 18 Jan 2003 | 0.7.1 | corrected in 0.7.1 after 19 Jan 2003
  The new features for incremental backups like -load_old_tree
  and -vanish_list_adr were quite buggy with higher levels.
  Even a SIGSEGV was among the ill effects.
  Those bugs were included since 28 December 2002.
• 16 Mar 2002 | 0.7.1 | corrected in 0.7 and 0.7.1 after 17 Mar 2002
  Contradicting the published software requirements, the program
  bc was necessary for creating ISO9660 CDs.
  Many thanks to Philipp Becker.
• 24 Jan 2002 | 0.7 | corrected in 0.7 after 24 Jan 2002
  More or less randomly the stored parameters of a leveled backup
  definition were not read in.
  Solved by: Erich Steiner
• 24 Jan 2002 | 0.7 | corrected in 0.7 and 0.6.1 after 24 Jan 2002
  File or directory names containing characters with special meaning
  to the shell (like blanks) were not processed properly. The determination
  of the file objects size led to 0 bytes.
  Solved by: Erich Steiner
• 20 Oct 2001 | 0.6.1 | corrected in 0.6 and 0.6.1 after 02 Nov 2001
  The backup plan does only contain file addresses up to the first
  faulty one. All further addresses get omitted.
  Note that the static binary in scdbackup-0.6.tar.gz does not contain
  that bug fix. One has to run ./CONFIGURE to get a corrected binary.
• 25 Jun 2000 | 0.6.1 | corrected in 0.6 and 0.6.1 after 27 Jun 2000
  The size determination for a directory fails if its name contains
  a single quote character. Error message (of FreeBSD):
  "Syntax error: Unterminated quoted string"
  during the planning of a backup.
  Many thanks to Jake Hamby.
• 07 Mar 2000 | 0.6.1 | corrected in 0.6 and 0.6.1 after 08 Mar 2000
  The file object FreeWRL-0.22/.javapipej which shows permissions
  prw-r--r-- causes the program to hang. This is probably
  the same problem as with /root/.kde/share/apps/kmp3/unique_fifo
  which is listed above as "unresolved".
• 22 Jan 2000 | 0.5.3 | corrected in 0.5.3 and 0.6 after 22 Jan 2000
  While running CONFIGURE, compilation of raedchen fails on some systems:
  raedchen.c:56: initializer element is not constant
  caused by static FILE *zielfp= stdout;
  Workaround: split declaration and initialization of zielfp and readfp
  Many thanks to Michael Schaefers.
• 21 Dec 1999 | 0.5.2 | corrected in 0.5.2 and 0.5.3 after 21 Dec 1999
  mkisofs aborts without any output bytes.
  Caused by the names with ~ or # in directories
  which get split by cd_backup_planer
  Workaround: append to scdbackup and scdbackup_home
  the options -filecheck -off -filecheck -exclude to override
  the default settings.
  Disadvantage: file names with ~ and # are ignored by mkisofs .
  Many thanks to Dirk Allard.
• 14 Dec 1999 | 0.5.2 | corrected in in 0.5.2
  mkisofs prints: Invalid node - ... and ends with empty output.
  Caused by whitespace characters in the filename and $@
  rather than "$@" in cd_backup_command
  Many thanks to Dominik Bodi.
• 09 Dec 1999 | 0.5 | corrected in 0.5.2
  scdbackup_sys prints: find: invalid predicate `-'
  and begins to write prematurely.
  Caused by a directory name which isn't suitable for the 'find' program.
  Many thanks to Germain Malenfant.
• 08 Dec 1999 | 0.5 | corrected in 0.5.2 , workaround for 0.5
  The shell command line isn't available on most systems.
  Many thanks to Germain Malenfant.

• allow network burn configuration in standard CONFIGURE_* scripts
• remove all references to installation address from configuration files
• make DVD more independend of CD configuration
• a split file restorer program
• try to use afio -Z -Q -P for avoiding need for split file directory
• sourcecode needs better structure and could be much more readable.