rsync 3.0.0pre6

Op de website van Samba.org is de zesde prerelease van rsync 3.0.0 verschenen. Het programma biedt een snelle manier om bestanden geheel of gedeeltelijk tussen verschillende lokaties te synchroniseren. Het wordt dan ook veel gebruikt in allerlei synchronisatieprogramma's maar ook bijvoorbeeld voor de backup van fileservers. Wie hier meer over wil weten kan de beschikbare documentatie doorlezen, waarin ook een aantal tutorials staan vermeld. De lijst met veranderingen sinds de vorige vermelding in de Meuktracker ziet er als volgt uit:

Notable changes in behavior:
The handling of implied directories when using --relative has changed to send them as directories (e.g. no implied dir is ever sent as a symlink). This avoids unexpected behavior and should not adversely affect most people. If you're one of those rare individuals who relied upon having an implied dir be duplicated as a symlink, you should specify the transfer of the symlink and the transfer of the referent directory as separate args. (See also --keep-dirlinks and --no-implied-dirs.)
Requesting a remote file list without specifying -r (--recursive) now sends the -d (--dirs) option to the remote rsync rather than sending -r along with an extra exclude of /*/*. If the remote rsync does not understand the -d option (i.e. it is 2.6.3 or older), you will need to either turn off -d (--no-d), or specify -r --exclude='/*/*' manually.
In --dry-run mode, the last line of the verbose summary text is output with a "(DRY RUN)" suffix to help remind you that no updates were made.
A writable rsync daemon that disables "use chroot" now defaults to a symlink-munging behavior designed to make symlinks safer while also allowing absolute symlinks to be stored and retrieved. This also has the effect of making symlinks unusable while they're in the daemon's hierarchy. See the daemon option "munge symlinks" for full details.
Bug fixes:
Fixed the output of -ii when combined with one of the --*-dest options: it now itemizes all the items, not just the changed ones.
Made the output of all file types consistent when using a --*-dest option. Prior versions would output too many creation events for matching items.
The code that waits for a child pid now handles being interrupted by a signal. This fixes a problem with the pre-xfer exec function not being able to get the exit status from the script.
A negated filter rule (i.e. with a '!' modifier) no longer loses the negation when sending the filter rules to the remote rsync.
Fixed a problem with the --out-format (aka --log-format) option %f: it no longer outputs superfluous directory info for a non-daemon rsync.
Fixed a problem with -vv (double --verbose) and --stats when "pushing" files (which includes local copies). Version 2.6.9 would complete the copy, but exit with an error when the receiver output its memory stats.
If --password-file is used on a non-daemon transfer, rsync now complains and exits. This should help users figure out that they can't use this option to control a remote shell's password prompt.
Make sure that directory permissions of a newly-created destination directory are handled right when --perms is left off.
The itemized output of a newly-created destination directory is now output as a creation event, not a change event.
Improved --hard-link so that more corner cases are handled correctly when combined with options such as --link-dest and/or --ignore-existing.
The --append option no longer updates a file that has the same size.
Fixed a bug when combining --backup and --backup-dir with --inplace: any missing backup directories are now created.
Fixed a bug when using --backup and --inplace with --whole-file or --read-batch: backup files are actually created now.
Starting up an extra copy of an rsync daemon will not clobber the pidfile for the running daemon -- if the pidfile exists, the new daemon will exit with an error.
The daemon pidfile is checked and created sooner in the startup sequence.
If a daemon module's "path" value is not an absolute pathname, the code now makes it absolute internally (making it work properly).
Ensure that a temporary file always has owner-write permission while we are writing to it. This avoids problems with some network filesystems.
Any errors output about password-file reading no longer cause an error at the end of the run about a partial transfer.
Using --only-write-batch to a daemon receiver now work properly (older versions would update some files while writing the batch).
Enhancements:
A new incremental-recursion algorithm is now used when rsync is talking to another 3.x version. This starts the transfer going more quickly (before all the files have been found), and requires much less memory. See the --recursive option in the manpage for some restrictions.
Lowered memory use in the non-incremental-recursion algorithm for typical option values (usually saving from 21-29 bytes per file).
The default --delete algorithm is now --delete-during when talking to a 3.x rsync. This is a faster scan than using --delete-before (which is the default when talking to older rsync versions), and is compatible with the new incremental recursion mode.
Rsync now allows multiple remote-source args to be specified rather than having to rely on a special space-splitting side-effect of the remote-shell. Additional remote args must specify the same host or an empty one (e.g. empty: :file1 or ::module/file2). This means that local use of brace expansion now works: rsync -av host:dir/{f1,f2} .
Added the --protect-args (-s) option, that tells rsync to send most of the command-line args at the start of the transfer rather than as args to the remote-shell command. This protects them from space-splitting, and only interprets basic wildcard special shell characters (*?[).
Added the --delete-delay option, which is a more efficient way to delete files at the end of the transfer without needing a separate delete pass.
Added the --acls (-A) option to preserve Access Control Lists. This is an improved version of the prior patch that was available, and it even supports OS X ACLs. If you need to have backward compatibility with old, acl-patched versions of rsync, apply the acls.diff file from the patches dir.
Added the --xattrs (-X) option to preserver extended attributes. This is an improved version of the prior patch that was available, and it even supports OS X xattrs (which includes their resource fork data). If you need to have backward compatibility with old, xattr-patched versions of rsync, apply the xattrs.diff file from the patches dir.
Added the --fake-super option that allows a non-super user to preserve all attributes of a file by using a special extended-attribute idiom. It even supports the storing of foreign ACL data on your backup server. There is also an analogous "fake super" option for an rsync daemon.
Added the --iconv option, which allows rsync to convert filenames from one character-set to another during the transfer. The default is to make this feature available as long as your system has iconv_open(). If compilation fails, specify --disable-iconv to configure, and then rebuild. If you want rsync to perform character-set conversions by default, you can specify --enable-iconv=CONVERT_STRING with the default value for the --iconv option that you wish to use. For example, "--enable-iconv=." is a good choice. See the rsync manpage for an explanation of the --iconv option's settings.
Added the --skip-compress=LIST option to override the default list of file suffixes that will not be compressed when using --compress.
The daemon's default for "dont compress" was extended to include: *.7z *.mp[34] *.mov *.avi *.ogg *.jpg *.jpeg
The matching routine was also optimized to run more quickly.
The --max-delete option now outputs a warning if it skipped any file deletions, including a count of how many deletions were skipped. (Older versions just silently stopped deleting things.)
You may specify --max-delete=0 to a 3.0.0 client to request that it warn about extraneous files without deleting anything. If you're not sure what version the client is, you can use the less-obvious --max-delete=-1, as both old and new versions will treat that as the same request (though older versions don't warn).
The --hard-link option now uses less memory on both the sending and receiving side for all protocol versions. For protocol 30, the use of a hashtable on the sending side allows us to more efficiently convey to the receiver what files are linked together. This reduces the amount of data sent over the socket by a considerable margin (rather than adding more data), and limits the in-memory storage of the device+inode information to just the sending side for the new protocol 30, or to the receiving side when speaking an older protocol (note that older rsync versions kept the device+inode information on both sides).
The filter rules now support a perishable ("p") modifier that marks rules that should not have an effect in a directory that is being deleted. e.g. -f '-p .svn/' would only affect "live" .svn directories.
If we get an error setting the time on a symlink, we don't complain about it anymore (since some operating systems don't support that, and it's not that important).
Protocol 30 now uses MD5 checksums instead of MD4.
Changed the --append option to not checksum the existing data in the destination file, which speeds up file appending.
Added the --append-verify option, which works like the older --append option (verifying the existing data in the destination file). For compatibility with older rsync versions, any use of --append that is talking protocol 29 or older will revert to the --append-verify method.
Added the --contimeout=SECONDS option that lets the user specify a connection timeout for rsync daemon access.
Documented and extended the support for the RSYNC_CONNECT_PROG variable that can be used to enhance the client side of a daemon connection.
Improved the dashes and double-quotes in the nroff manpage output.
We now support a lot more --no-OPTION override options.
Internal:
The file-list sorting algorithm now uses a sort that keeps any same-named items in the same order as they were specified. This allows rsync to always ensure that the first of the duplicates is the one that will be included in the copy. The new sort was also faster than the glibc version of qsort() and mergesort() in my testing.
Rsync now supports the transfer of 64-bit timestamps (time_t values).
Fixed a build problem with older (2.x) versions of gcc.
Added some isType() functions that make dealing with signed characters easier without forcing variables via casts.
Changed strcat/strcpy/sprintf function calls to use safer versions.
Upgraded the included popt version to 1.10.2 and improved its use of string-handling functions.
Added missing prototypes for compatibility functions from the lib dir.
Configure determines if iconv() has a const arg, allowing us to avoid a compiler warning.
Made the sending of some numbers more efficient for protocol 30.
Make sure that a daemon process doesn't mind if the client was weird and omitted the --server option.
There are more internal logging categories available in protocol 30 than the age-old FINFO and FERROR, including FERROR_XFER and FWARN. These new categories allow some errors and warnings to go to stderr without causing an erroneous end-of-run warning about some files not being able to be transferred.
Improved the use of "const" on pointers.
Improved J.W.'s pool_alloc routines to add a way of freeing older sections of a pool's memory.
The getaddrinfo.c compatibility code in the "lib" dir was replaced with some new code (derived from samba, derived from PostgreSQL) that has a better license than the old code.
Developer related:
Rsync is now licensed under the GPLv3 or later.
Rsync is now being maintained in a "git" repository instead of CVS (though the old CVS repository still exists). Several maintenance scripts were updated to work with git.
Generated files are no longer committed into the source repository. The autoconf and autoheader commands are now automatically run during the normal use of "configure" and "make". The latest dev versions of all generated files can also be copied from the samba.org web site (see the "magic" configure script that now comes with rsync for its location).
The "patches" directory of diff files is now built from branches in the rsync git repository (branch patch/FOO creates file patches/FOO.diff).
The proto.h file is now built using a simple perl script rather than a complex awk script, which proved to be more widely compatible.
When running the tests, we now put our per-test temp dirs into a sub-directory named testtmp (which is created, if missing). This allows someone to symlink the testtmp directory to another filesystem (which is useful if the build dir's filesystem does not support ACLs and xattrs, but another file system does).
Rsync now has a way of handling protocol-version changes during the development of a new protocol version. This causes any out-of-sync versions to speak an older protocol rather than fail in a cryptic manner. This addition makes it safe to deploy a pre-release version that may interact with the public. This new exchange of sub-version info does not interfere with the {MIN,MAX}_PROTOCOL_VERSION checking algorithm (which does not have enough range to allow the main protocol number to be incremented for every minor tweak in that happens during development).
The csprotocol.txt file was updated to mention the daemon protocol change in the 3.0.0 release.

Versienummer	3.0.0pre6
Releasestatus	Beta
Besturingssystemen	Linux, BSD, macOS, Solaris, UNIX
Website	rsync
Download	http://rsync.samba.org/ftp/rsync/rsync-3.0.0pre6.tar.gz
Bestandsgrootte	728,00kB
Licentietype	GPL

21-01	rsync 3.4.1	1
14-01	rsync 3.4.0	0
08-'20	rsync 3.2.3	1
06-'20	rsync 3.2.1	19
01-'18	rsync 3.1.3	17
07-'14	rsync 3.1.1	15
06-'11	rsync 3.0.9pre1	2
03-'11	rsync 3.0.8	8
02-'11	rsync 3.0.8pre1	0
01-'10	rsync 3.0.7	4

Software-update: rsync 3.0.0pre6

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