-GNU tar NEWS - User visible changes. 2009-08-05
+GNU tar NEWS - User visible changes. 2009-09-08
Please send GNU tar bug reports to <bug-tar@gnu.org>
\f
reported only if the archive is read from a device (as opposed
to regular files and pipes).
+* Seekable archives
+
+When a read-only operation (e.g. --list or --extract) is requested
+on a regular file, tar attemtps to speed up accesses by using lseek.
+
* New command line option `--warning'
The `--warning' command line option allows to suppress or enable
suppresses the output of `A lone zero block' diagnostics, which is
normally issued if `archive' ends with a single block of zeros.
+* New command line option `--level'
+
+The `--level=N' option sets the incremental dump level N. It
+is valid when used in conjunction with the -c and --listed-incremental
+options. So far the only meaningful value for N is 0. The
+`--level=0' option forces creating the level 0 dump, by truncating
+the snapshot file if it exists.
+
+* Files removed during incremental dumps
+
+If a file or directory is removed while incremental dump is
+in progress, tar exact actions depend on whether this file
+was explicitly listed in the command line, or was gathered
+during file system scan.
+
+If the file was explicitly listed in the command line, tar
+issues error message and exits with the code 2, meaning
+fatal error.
+
+Otherwise, if the file was gathered during the file system
+scan, tar issues a warning, saying "File removed before we read it",
+and sets the exit code to 1, which means "some files differ".
+If the --warning=no-file-removed option is given, no warning
+is issued and the exit code remains 0.
+
* Bugfixes
** Fix handling of hard link targets by -c --transform.
** Fix hard links recognition with -c --remove-files.