X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=NEWS;h=93e2ac64c18897278c22a8571679c00fd2dc5b59;hb=51aee274e892923a3f8fdb774e4f6b90bce47437;hp=f845e983ae5145ae2ca85a4dce5ce78d2f1aa8a0;hpb=f60d655908784583d14852c5121dd6fdea9b2d68;p=chaz%2Ftar diff --git a/NEWS b/NEWS index f845e98..93e2ac6 100644 --- a/NEWS +++ b/NEWS @@ -1,8 +1,154 @@ -GNU tar NEWS - User visible changes. 2008-02-04 +GNU tar NEWS - User visible changes. 2009-08-08 Please send GNU tar bug reports to -version 1.19.1 (CVS) +version 1.22.90 (Git) + +* Record size autodetection + +When listing or extracting archives, the actual record size is +reported only if the archive is read from a device (as opposed +to regular files and pipes). + +* New command line option `--warning' + +The `--warning' command line option allows to suppress or enable +particular warning messages during `tar' run. It takes a single +argument (a `keyword'), identifying the class of warning messages +to affect. If the argument is prefixed with `no-', such warning +messages are suppressed. For example, + + tar --warning=no-alone-zero-block -x -f archive + +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 messages 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. +** Fix restoring files from backup (debian bug #508199). +** Correctly restore modes and permissions on existing directories. + + +version 1.22 - Sergey Poznyakoff, 2009-03-05 + +* Support for xz compression + +Tar uses xz for compression if one of the following conditions is met: + + 1. The option --xz or -J (see below) is used. + 2. The xz binary is set as compressor using --use-compress-program option. + 3. The file name of the archive being created ends in `.xz' and + auto-compress option (-a) is used. + +Xz is used for decompression if one of the following conditions is met: + + 1. The option --xz or -J is used. + 2. The xz binary is set as compressor using --use-compress-program option. + 3. The file is recognized as xz compressed stream data. + +* Short option -J reassigned as a short equivalent of --xz + +* New option -I + +The -I option is assigned as a short equivalent for +--use-compress-program. + +* The --no-recursive option works in incremental mode. + + +version 1.21 - Sergey Poznyakoff, 2008-12-27 + +* New short option -J + +A shortcut for --lzma. + +* New option --lzop + +* New option --no-auto-compress + +Cancels the effect of previous --auto-compress (-a) option. + +* New option --no-null + +Cancels the effect of previous --null option. + +* Compressed format recognition + +If tar is unable to determine archive compression format, it falls +back to using archive suffix to determine it. + +* VCS support. + +Using --exclude-vcs handles also files used internally by Bazaar, +Mercurial and Darcs. + +* Transformation scope flags + +Name transformation expressions understand additional flags that +control type of archive members affected by them. The flags are: + + - r + Apply transformation to regular archive members. + + - s + Apply transformation to symbolic link targets. + + - h + Apply transformation to hard link targets. + +Corresponding upper-case letters negate the meaning, so that +`H' means ``do not apply transformation to hard link targets.'' + +The scope flags are listed in the third part of an `s' expression, +e.g.: + + tar --transform 's|^|/usr/local/|S' + +Default is `rsh', which means that transformations are applied to +both regular archive members and to the targets of symbolic and hard +links. If several transform expressions are used, the default flags +can be changed using `flags=' statement before the expressions, e.g.: + + tar --transform 'flags=S;s|^|/usr/local/|S' + +* Bugfixes + +** The --null option disabled handling of tar options in list files. This +is fixed. +** Fixed record size autodetection. If detected record size differs from +the expected value (either default, or set on the command line), tar +always prints a warning if verbosity level is set to 1 or greater, +i.e. if either -t or -v option is given. + + + +version 1.20 - Sergey Poznyakoff, 2008-04-14 * New option --auto-compress (-a) @@ -22,9 +168,22 @@ they refer to, instead of creating usual hard link members (type '1'). This action allows to specify an action to be executed upon hitting a checkpoint. Recognized actions are: dot, echo (the default), -echo=string, and sleep=value. Any number of `--checkpoint-action' -options can be specified, the actions will be executed in order of -their appearance in the command line. +echo=string, ttyout=string, exec=cmdline, and sleep=value. Any number +of `--checkpoint-action' options can be specified, the actions will be +executed in order of their appearance in the command line. See +chapter 3.8 "Checkpoints" for a complete description. + +* New options --no-check-device, --check-device. + +The `--no-check-device' option disables comparing device numbers during +preparatory stage of an incremental dump. This allows to avoid +creating full dumps if the device numbers change (e.g. when using an +LVM snapshot). + +The `--check-device' option enables comparing device numbers. This is +the default. This option is provided to undo the effect of the previous +`--no-check-device' option, e.g. if it was set in TAR_OPTIONS +environment variable. * The --transform option. @@ -34,11 +193,22 @@ The specified transformations will be applied in turn. The argument to `--transform' option can be a list of replace expressions, separated by a semicolon (as in `sed'). +Filename transformations are applied to symbolic link targets +during both creation and extraction. Tar 1.19 used them only +during extraction. + +For a detailed description, see chapter 6.7 "Modifying File and Member +Names". + * Info (end-of-volume) scripts The value of the blocking factor is made available to info and checkpoint scripts via environment variable TAR_BLOCKING_FACTOR. +* Incremental archives + +Improved (sped up) extracting from incremental archives. + * Bugfixes. ** Fix bug introduced in version 1.19: tar refused to update non-existing archives.