Before this change, rclone would return an error from the listing if
there was an unreadable directory, or if there was a problem stat-ing
a directory entry. This was frustrating because the command
completely aborts at that point when there is work it could do.
After this change rclone lists the directories and reports ERRORs for
unreadable directories or problems stat-ing files, but does return an
error from the listing. It does set the error flag which means the
command will fail (and objects won't be deleted with `rclone sync`).
This brings rclone's behaviour exactly in to line with rsync's
behaviour. It does as much as possible, but doesn't let the errors
pass silently.
Fixes#3179
Before this change, rclone didn't report errors for commands which
didn't return an error directly. For example `rclone ls` could
encounter an error and rclone would log nothing, even though the exit
code was non zero.
After this change we always log a message if we are exiting with a
non-zero exit code.
This makes WriteAt for non cached files wait a short time if it gets
an out of order write (which would normally cause an error) to see if
the gap will be filled with an in order write.
The makes the SFTP backend work fine with --vfs-cache-mode off
Before this change we calculated the checksum which is potentially
time consuming and then ignored the result. After the change we don't
calculate the checksum if we are about to ignore it.
Before this change we calculated all possible hashes for the file when
the `Hashes` method was called.
After we only calculate the Hash requested.
Almost all uses of `Hash` just need one checksum. This will slow down
`rclone lsjson` with the `--hash` flag. Perhaps lsjson should have a
`--hash-type` flag.
However it will speed up sync/copy/move/check/md5sum/sha1sum etc.
Before it took 12.4 seconds to md5sum a 1GB file, after it takes 3.1
seconds which is the same time the md5sum utility takes.
In the Documentation it states:
// If (opts.MultipartParams or opts.MultipartContentName) and
// opts.Body are set then CallJSON will do a multipart upload with a
// file attached.
