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NEWS
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NEWS for rsync 2.6.4 (UNRELEASED)
Protocol: 29 (changed)
Changes since 2.6.3:
OUTPUT CHANGES:
- When rsync deletes a directory and outputs a verbose message about
it, it now appends a trailing slash to the name instead of (only
sometimes) outputting a preceding "directory " string.
- The --stats output will contain file-list time-statistics if both
sides are 2.6.4, or if the local side is 2.6.4 and the files are
being pushed (since the stats come from the sending side).
(Requires protocol 29.)
BUG FIXES:
- Restore the list-clearing behavior of "!" in a .cvsignore file (2.6.3
was only treating it as a special token in an rsync include/exclude
file).
- The combination of --verbose and --dry-run now mentions changes in
directories and it now includes the full update information that
would be output without --dry-run at higher levels of verbosity.
- Avoid a mkdir warning when removing a directory in the destination
that already exists in the --backup-dir.
- An OS that has a binary mode for its files (such as cygwin0 needed
setmode(fd, O_BINARY) called on the temp-file we opened with
mkstemp(). (Fix derived from the cygwin's rsync package.)
- Fixed a potential hang when verbosity is high, the client side is
the sender, and the file-list is large.
- We now check if the OS doesn't support using mknod() for creating
FIFOs and sockets, and compile-in using mkfifo() and socket() when
necessary.
- Fixed an off-by-one error in the handling of --max-delete=N.
- One place in the code wasn't checking if fork() failed.
- The "ignore nonreadable" daemon parameter no longer affects symlinks
that are being copied, even if they point nowhere.
- If the OS does not have lchown() and its chown() tries to set the
referent of a symlink (as it should), we no longer try to set the
user and group of a symlink.
- The generator now properly runs the hard-link loop and the dir-time
rewriting loop after we're sure that the redo phase is complete.
- When --backup was specified with --partial-dir=DIR (where DIR is a
relative path), the backup code was erroneously trying to backup a
file that was put into the partial-dir.
- One call to flush_write_file() was not being checked for an error.
- The --no-relative option was not being sent from the client to a
server sender.
- If an rsync daemon specified "dont compress = ..." for a file and the
client tried to specify --compress, the libz code was not handling a
compression level of 0 properly. This could cause a transfer failure
if the block-size for a file was large enough (i.e. rsync might have
exited with an error for large files).
- If a daemon can't open the specified log file (i.e. syslog is not
being used), die without crashing. We also try to output an error
about the failure (which will only be seen if --no-detach was
specified).
- A local transfer no longer duplicates all its include/exclude options
by sending the forked process a copy of the list it already has.
ENHANCEMENTS:
- Rsync now supports popt's option aliases, which means that you can
use /etc/popt and/or ~/.popt to create your own option aliases.
- Added the --delete-during (--del) option which will delete files
from on the receiving side incrementally as each directory in the
transfer is being processed (which makes it more efficient than the
default, before-the-transfer behavior of --delete). Note that the
--del option is implemented as an internally-defined popt alias, so
an rsync daemon that refuses "delete" (which, for safety's sake,
really matches "delete*") will still refuse all delete options. The
default --delete behavior is also explicitly selectable via
--delete-before.
- All the --delete-WHEN options are now more memory efficient:
Previously an entire duplicate set of file-list objects was created
on the receiving side for the entire destination hierarchy. The new
algorithm only creates one directory of objects at a time.
- Added the --copy-dest option, which works like --link-dest except
that it includes copies of identical files.
- Added support for specifying multiple --compare-dest, --copy-dest, or
--link-dest options, but only of a single type. (Promoted from the
patches dir and enhanced.)
- Added the --max-size option. (Promoted from the patches dir.)
- The daemon-mode options were separated from the normal rsync options
so that they can't be mixed together. This makes it impossible to
start a daemon that had improper default option values that could
cause problems (such as a hang or an abort) when a client connects.
- The --bwlimit option may now be used in combination with --daemon
to specify both a default value for the daemon side and a value
that cannot be exceeded by a user-specified --bwlimit option.
- Added the "port" parameter to the rsyncd.conf file. (Promoted from
the patches dir.) Also added "address". A command-line option
will take precedence over a config-file option, as expected.
- In _exit_cleanup(): when we are exiting with a partially-received
file, we now flush any data in the write-cache before closing the
partial file.
- The --inplace support was enhanced to work with --compare-dest,
--link-dest, and (the new) --copy-dest options. (Requires protocol
29.)
- Added the --dirs (-d) option for an easier way to copy directories
without recursion.
- Added the --list-only option which is mainly a way for the client to
put the server into listing mode without needing to resort to any
option kluges (e.g. the age-old use of "-r --exclude="/*/*" for a
non-recursive listing). This option is used automatically when a
modern rsync speaks to a modern daemon, but may also be specified
manually if you want to force the use of the --list-only option over
a remote-shell connection.
- Added the --omit-dir-times (-O) option which will avoid updating the
modified time for directories when --times was specified. This
option will avoid an extra pass through the file-list at the end of
the transfer (to tweak all the directory times), which can result in
an appreciable speedup for a really large transfer. (Promoted from
the patches dir.)
- Added the --filter (-f) option and its helper option, -F. Filter
rules are an extension to the existing include/exclude handling
that also supports nested filter files as well as per-directory
filter files (like .cvsignore, but with full filter-rule parsing).
This new option was chosen in order to ensure that all existing
include/exclude processing remained 100% compatible with older
versions. (Protocol 29 needed for full filter-rule support, but
backward-compatible rules work with earlier protocol versions.)
- Added the --delay-updates option that puts all updated files into
a temporary directory (by default ".~tmp~", but settable via the
--partial-dir=DIR option) until the end of the transfer. This
makes the updates a little more atomic for a large transfer.
- If rsync is put into the background, any output from --progress is
reduced.
- Documented the "max verbosity" setting for rsyncd.conf. (This
setting was added a couple releases ago, but left undocumented.)
- The sender and the generator now double-check the file-list index
they are given, and refuse to operate on a directory index (since
that would indicate that something had gone very wrong).
SUPPORT FILES:
- Added support/atomic-rsync -- a perl script that will transfer some
files using rsync, and then move the updated files into place all at
once at the end of the transfer. Only works when pulling, and uses
--link-dest and a parallel hierarchy of files to effect its update.
- Added support/mnt-excl that takes the /proc/mounts file and
translates it into a set of excludes that will exclude all mount
points (even mapped mounts to the same disk). The excludes are made
relative to the specified source dir and properly anchored.
- Added support/savetransfer.c -- a C program that can make a copy of
all the data that flows over the wire. This lets you test for data
corruption (by saving the data on both the sending side and the
receiving side) or provides a way to help debug a protocol error.
- Added support/rrsync -- my version of Joe Smith's restricted rsync
perl script. This helps to ensure that only certain rsync commands
can be run by an ssh invocation.
- Improved the option descriptions in the --help text.
INTERNAL:
- Added better checking of the checksum-header values that come over
the socket.
- Merged the various delete-file functions into a single function so
that it is easier to maintain.
- Improved the type of some variables (particularly blocksize vars) for
consistency and proper size.
- Got rid of the uint64 type (which we didn't need).
- Use a slightly more compatible set of core #include directives.
- Defined int32 in a way that ensures that the build dies if we can't
find a variable with at least 32 bits.
PROTOCOL DIFFERENCES FOR VERSION 29:
- If --inplace is specified, the generator sends an extra byte after
each index integer indicating what kind of basis file is being used
for the transfer (see the FNAMECMP_* defines).
- The sending of exclude names is done using filter-rule syntax. This
means that all names have a prefixed rule indicator, even excludes
(which used to be sent as a bare pattern, when possible). The -C
option will include the per-dir .cvsignore merge file in the list of
filter rules so it is positioned correctly (unlike in some older
transfer scenarios).
- Rsync sorts the filename list in a different way: it sorts the
subdir names after the non-subdir names for each dir's contents, and
it always puts a dir's contents immediately after the dir's name in
the list. (Previously an item named "foo.txt" would sort in between
directory "foo/" and "foo/bar".)
- When talking to a protocol 29 rsync daemon, a list-only request
is able to note this before the options are sent over the wire, and
the new --list-only option is enabled.
- When the --stats bytes are sent over the wire (or stored in a batch),
they now include two elapsed-time values: one for how long it took to
build the file-list, and one for how long it took to send it over the
wire (each expressed in thousandths of a second).
- When --delete-excluded is specified with some filter rules (AKA
excludes), a client sender will still initiate a send of the filter
rules to the receiver, but it only includes those rules that are
receiver-specific. Older protocols used to omit the sending of
excludes in this situation (since there were no receiver-specific
rules that survived --delete-excluded back then).
- A protocol-29 batch file includes a bit for the setting of the --dirs
option. Also, the shell script created by --write-batch will use the
--filter option instead of --exclude-from to capture any filter rules.
BUILD CHANGES:
- Handle an operating system that use mkdev() in place of makedev().
- Improved configure to better handle cross-compiling.