Modifications to the local database: create a summary segments_used table.

[cumulus.git] / NEWS

diff --git a/NEWS b/NEWS
index e7defe8..07d7f16 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,47 @@
-UNRELEASED
+0.5.1 [2007-11-13]
+    - Have the lbs-util tool check the version number when reading a
+      snapshot, and signal an error if the format is not recognized.
+    - Include a sample script, contrib/parity-gen, for creating
+      RAID-like parity sets to recover from some segment corruption.
+      The par2 command (http://parchive.sourceforge.net/) is used to
+      actually generate the parity sets; the parity-gen script simply
+      automates maintaining the parity sets.
+
+0.5 [2007-10-16]
+    - Much improved Python interface for accessing and manipulating LBS
+      archives and local database information.  The interface should not
+      yet be considered completely stable.
+    - Python implementation of lbs-util now includes most of the
+      features of the Perl implementation, plus some other new features.
+      The Perl library and utility are deprecated and have been removed
+      from this release.
+    - Preliminary snapshot restore support in lbs-util.  This is still
+      not yet extensively tested.
+
+0.4 [2007-08-24]
+    - Documentation improvements: a getting started README, and a
+      description of some of the implementation details.
+    - Include an example filter script, lbs-filter-gpg, for encrypting
+      segment data as it is written.
+    - Add support for signed snapshot descriptor files (via the
+      --signature-filter option).  Due to the checksums contained in the
+      snapshot descriptor, the signature covers the entire contents of
+      the snapshot.
+    - Preview release of lbs-util.py, a Python-based program for
+      managing LBS snapshots.  It currently implements a very simple
+      form of automatic segment cleaning, though this isn't much tested.
+    - Improved segment repacking support; after cleaning segments,
+      objects can be written out in different groups based on age.  This
+      may help with long-term segment cleaning efficiency, but probably
+      needs more tuning.
+
+0.3 [2007-08-10]
+    - LOCAL DATABASE CHANGE: A checksums file is now written out along
+      with the snapshot descriptor that contains checksums of segments
+      used in a snapshot.  This will allow quick integrity checks of a
+      snapshot, without needing to decompress or decrypt the segment
+      files.  The local database schema was modified to store the
+      checksums for segments.

     - Build dependence on libtar has been dropped.  All necessary
       support for writing TAR files is now directly included with the
       source.
     - Build dependence on libtar has been dropped.  All necessary
       support for writing TAR files is now directly included with the
       source.


@@ -10,8 +53,13 @@ UNRELEASED
       restore.pl script does not use this.
     - Bugfix: Print a help message instead of crashing if no files are
       specified.
       restore.pl script does not use this.
     - Bugfix: Print a help message instead of crashing if no files are
       specified.

+    - Bugfix: File descriptors of files being backed up were closed
+      twice.  In some cases this might have led to an unrelated file
+      being closed (if the file descriptor was quickly re-used).
+    - Preview of a new lbs-util command for maintaining snapshots.
+      Functionality is currently limited.

 
 

-version 0.2.2 [2007-07-27]
+0.2.2 [2007-07-27]

     - Update reference restore.pl script to handle octal/hexadecimal
       (format change introduced in 0.2).
     - Better support for mixing multiple backup schemes: the statcache
     - Update reference restore.pl script to handle octal/hexadecimal
       (format change introduced in 0.2).
     - Better support for mixing multiple backup schemes: the statcache


@@ -19,11 +67,11 @@ version 0.2.2 [2007-07-27]
       where multiple different backups (of different source directories)
       are made, all sharing the same local database directory.
 
       where multiple different backups (of different source directories)
       are made, all sharing the same local database directory.
 

-version 0.2.1 [2007-07-20]
+0.2.1 [2007-07-20]

     - Bugfix: Do not print an error when only one directory is specified
       to back up.
 
     - Bugfix: Do not print an error when only one directory is specified
       to back up.
 

-version 0.2 [2007-07-20]
+0.2 [2007-07-20]

     - SNAPSHOT FORMAT CHANGE: Metadata logs in backups can now contain
       octal and hexadecimal values.  Old restore programs may not be
       able to read these new backups.  The reference restore.pl script
     - SNAPSHOT FORMAT CHANGE: Metadata logs in backups can now contain
       octal and hexadecimal values.  Old restore programs may not be
       able to read these new backups.  The reference restore.pl script


@@ -37,5 +85,5 @@ version 0.2 [2007-07-20]
     - Device major/minor numbers are dumped for block and character
       devices.
 
     - Device major/minor numbers are dumped for block and character
       devices.
 

-version 0.1 [2007-07-14]
+0.1 [2007-07-14]

     - Initial release.
     - Initial release.