Before this change on Windows, files copied locally could become
heavily fragmented (300+ fragments for maybe 100 MB), no matter how
much contiguous free space there was (even if it's over 1TiB). This
can needlessly yet severely adversely affect performance on hard
disks.
This changes uses NtSetInformationFile to pre-allocate the space to
avoid this.
It does nothing on other OSes other than Windows.
This was causing errors which looked like this when copying a file to
the root of a drive:
mkdir \\?: The filename, directory name, or volume label syntax is incorrect.
This was caused by an incorrect path splitting routine which was
removing \ of the end of UNC paths when it shouldn't have been. Fixed
by using the standard library `filepath.Dir` instead.
This unifies the 3 methods of reading config
* command line
* environment variable
* config file
And allows them all to be configured in all places. This is done by
making the []fs.Option in the backend registration be the master
source of what the backend options are.
The backend changes are:
* Use the new configmap.Mapper parameter
* Use configstruct to parse it into an Options struct
* Add all config to []fs.Option including defaults and help
* Remove all uses of pflag
* Remove all uses of config.FileGet
Before this commit rclone's handling of symlinks and junction points
under Windows was broken. rclone treated them as files and attempted
to transfer them which gave the error "The handle is invalid".
Ultimately the cause of this was 3e43ff7414 which was a
workaround so files with reparse points (which are a kind of symlink)
would transfer correctly.
The solution implemented is to revert the above commit which will mean
that #614 will break again. However there is now a work-around (which
will be signaled by rclone) to use the -L flag which wasn't available
when the original commit was made.
Fixes#2336
Before this change asynchronous closes in cmount could cause sharing
violations under Windows on Remove which manifest themselves
frequently as test failures.
This change lets the Remove be retried on a sharing violation under
Windows.
Before this change `rclone move localdir /mnt/different-fs` would
error. Now it falls back to moving individual files, which in turn
falls back to copying individual files across the filesystem boundary.
A Range request can never request 0 bytes however this change was made
to make a clearer signal that the limit means read to the end.
Add test and more documentation and fixup uses
The purpose of this is to make it easier to maintain and eventually to
allow the rclone backends to be re-used in other projects without
having to use the rclone configuration system.
The new code layout is documented in CONTRIBUTING.
