Before this change, operations.DirMove would fail when moving a directory, if
the src and dest were on different upstreams of a combine remote.
The issue only affected operations.DirMove, and not sync.MoveDir, because they
checked for server-side-move support in different ways.
MoveDir checks by just trying it and seeing what error comes back. This works
fine for combine because combine returns fs.ErrorCantDirMove which MoveDir
understands what to do with.
DirMove, however, only checked whether the function pointer is nil. This is an
unreliable way to check for combine, because combine does advertise support for
DirMove, despite not always being able to do it.
This change fixes the issue by checking the returned error in a manner similar
to sync.MoveDir and falling back to individual file moves (copy + delete)
depending on which error was returned.
Before this change, operations.CopyDirMetadata would fail with: `internal error:
expecting directory string from combine root '' to have SetMetadata method:
optional feature not implemented` if the dst was the root directory of a combine
upstream. This is because combine was returning a *fs.Dir, which does not
satisfy the fs.SetMetadataer interface.
While it is true that combine cannot set metadata on the root of an upstream
(see also #7652), this should not be considered an error that causes sync to do
high-level retries, abort without doing deletes, etc.
This change addresses the issue by creating a new type of DirWrapper that is
allowed to fail silently, for exceptional cases such as this where certain
special directories have more limited abilities than what the Fs usually
supports.
It is possible that other similar wrapping backends (Union?) may need this same
fix.
Before this change, directory modtimes (and metadata) were always synced from
src to dst, even if already in sync (i.e. their modtimes already matched.) This
potentially required excessive API calls, made logs noisy, and was potentially
problematic for backends that create "versions" or otherwise log activity
updates when modtime/metadata is updated.
After this change, a new DirsEqual function is added to check whether dirs are
equal based on a number of factors such as ModifyWindow and sync flags in use.
If the dirs are equal, the modtime/metadata update is skipped.
For backends that require setDirModTimeAfter, the "after" sync is performed only
for dirs that could have been changed by the sync (i.e. dirs containing files
that were created/updated.)
Note that dir metadata (other than modtime) is not currently considered by
DirsEqual, consistent with how object metadata is synced (only when objects are
unequal for reasons other than metadata).
To sync dir modtimes and metadata unconditionally (the previous behavior), use
--ignore-times.
Before this change, the VFS layer did not properly handle unicode normalization,
which caused problems particularly for users of macOS. While attempts were made
to handle it with various `-o modules=iconv` combinations, this was an imperfect
solution, as no one combination allowed both NFC and NFD content to
simultaneously be both visible and editable via Finder.
After this change, the VFS supports `--no-unicode-normalization` (default `false`)
via the existing `--vfs-case-insensitive` logic, which is extended to apply to both
case insensitivity and unicode normalization form.
This change also adds an additional flag, `--vfs-block-norm-dupes`, to address a
probably rare but potentially possible scenario where a directory contains
multiple duplicate filenames after applying case and unicode normalization
settings. In such a scenario, this flag (disabled by default) hides the
duplicates. This comes with a performance tradeoff, as rclone will have to scan
the entire directory for duplicates when listing a directory. For this reason,
it is recommended to leave this disabled if not needed. However, macOS users may
wish to consider using it, as otherwise, if a remote directory contains both NFC
and NFD versions of the same filename, an odd situation will occur: both
versions of the file will be visible in the mount, and both will appear to be
editable, however, editing either version will actually result in only the NFD
version getting edited under the hood. `--vfs-block-norm-dupes` prevents this
confusion by detecting this scenario, hiding the duplicates, and logging an
error, similar to how this is handled in `rclone sync`.
Before this change, NOTICE log messages during bisync dry runs were unclear as
to the direction of the skipped operation (Path1 to 2 vs. 2 to 1.) This change
adjusts the cmd/bisync/log.go indent function to be more expressive about
direction.
In this commit (2014 for v1.02) Purge was implemented for the local
backend:
1527e64ee7 local: Implement Purger interface
This appeared to be implemented just to make a Purge and doesn't
appear to do anything useful.
It is in fact significatly worse than the rclone fallback purge since
it doesn't operate in parallel or update stats.
This patch removes the Purge routine for a consequent speed up and
showing of stats.
See: https://forum.rclone.org/t/progress-flag-for-rclone-purge/44416
Before this change, undecryptable file names would be skipped very quietly
(there was a log warning, but only at DEBUG level),
failing to alert users of a potentially serious issue that needs attention.
After this change, the log level is raised to NOTICE by default and a new
--crypt-strict-names flag allows raising an error, for users who may prefer not
to proceed if such an issue is detected.
See https://forum.rclone.org/t/skipping-undecryptable-file-name-should-be-an-error/27115https://github.com/rclone/rclone/issues/5787
Directory mod times are synced by default if the backend is capable
and directory metadata is synced if the --metadata flag is provided
and the backend is capable.
This updates the bisync golden tests also which were affected by
--dry-run setting of directory modtimes.
Fixes#6685
Before this change this would give errors like this
failed to set metadata on directory: failed to set birth (creation) time: Access is denied.
This was caused by opening the directory in the wrong mode.
A consequence of this is that fs.Directory returned by the local
backend will now have a correct size in (rather than -1). Some tests
depended on this and have been fixed by this commit too.
This involved adding the Fs() method to DirEntry as it is needed in
the metadata mapper.
Unspecialised fs.Dir objects will return a new fs.Unknown from their
Fs() methods as they are not specific to any given Fs.
