This reverts commit 9065e921c1.
It turns out the problem for the failing fs/sync tests was the
policies being different for search and create which meant that the
file was being created in one union branch but a diferent one was
found in another branch.
In this commit we enabled PartialUploads for the union backend.
3faa84b47c combine,compress,crypt,hasher,union: support wrapping backends with PartialUploads
This turns out to cause test failures in fs/sync so this commit
disables them again pending further investigation.
Before this change the Errors type in the union backend produced
errors which could not be Unwrapped to test their type.
This adds the (go1.20) Unwrap method to the Errors type which allows
errors.Is to work on these errors.
It also adds unit tests for the Errors type and fixes a couple of
minor bugs thrown up in the process.
See: https://forum.rclone.org/t/failed-to-set-modification-time-1-error-pcloud-cant-set-modified-time/38596
Set this automatically for any backend which implements UnWrap and
manually for combine and union which can't implement UnWrap but do
overlay other backends.
`FS.cacheExpiry` is accessed through sync/atomic.
According to the documentation, "On ARM, 386, and 32-bit MIPS, it is
the caller's responsibility to arrange for 64-bit alignment of 64-bit
words accessed atomically. The first word in a variable or in an
allocated struct, array, or slice can be relied upon to be 64-bit
aligned."
Before commit 1d2fe0d856 this field was
aligned, but then a new field was added to the structure, causing the
test suite to panic on linux/386.
No other field is used with sync/atomic, so `cacheExpiry` can just be
placed at the beginning of the stuct to ensure it is always aligned.
Before this fix GetFreeSpace returned math.MaxInt64 for remotes which
don't support reading free space, however this is used in various
comparison routines as a too large value, meaning that remotes of size
math.MaxInt64 were never being selected.
This fixes GetFreeSpace to return math.MaxInt64 - 1 so then can be selected.
It also fixes GetUsedSpace the same way however as the default for not
supported was 0 this was very unlikely to have ever caused a problem.
Before this fix, if uploading to a union consisting of all bucket
based remotes (eg s3), uploads failed with:
Failed to copy: object not found
This was because the union backend was relying on parent directories
being created to work out which files to upload. If all the upstreams
were bucket based backends which can't hold empty directories, no
directories were created and the upload failed.
This fixes the problem by returning the upstreams used when creating
the directory for the upload, rather than searching for them again
after they've been created.
This will also make the union backend a little more efficient.
Fixes#6170
The directory created by `T.TempDir` is automatically removed when the
test and all its subtests complete.
Reference: https://pkg.go.dev/testing#T.TempDir
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This is possible now that we no longer support go1.12 and brings
rclone into line with standard practices in the Go world.
This also removes errors.New and errors.Errorf from lib/errors and
prefers the stdlib errors package over lib/errors.
Before this change the union's feature flags were a strict AND of the
underlying remotes. This means that a union of a local disk (which can
Move but not Copy) and a bucket based remote (which can Copy but not
Move) could neither Move nor Copy.
This fix advertises Move in the union if all the remotes can Move or
Copy. It also implements Move as Copy+Delete (like rclone does
normally) if the underlying union does not support Move.
This enables renames to work with unions of local disk and bucket
based remotes expected.
Fixes#5632
This commit broke the initialisation of the union backend
f17d7c0012 union: refactor to use fspath.SplitFs instead of fs.ParseRemote #4996
This patch fixes it.
Before this change, when using an all create method with one of the
upstreams being read only, if there was an existing file on the read
only remote, it was impossible to update it.
This change detects that situation and creates the file on a
read/write upstream. This file will shadow the file on the read/only
upstream. If it is deleted the read only upstream file will be visible
again.
Fixes#4929
Before this fix using the epff policy could double close a channel.
The fix refactors the code to make that impossible and cancels any
running queries when the first query is found.
This shouldn't be read as encouraging the use of math/rand instead of
crypto/rand in security sensitive contexts, rather as a safer default
if that does happen by accident.
This adds a context.Context parameter to NewFs and related calls.
This is necessary as part of reading config from the context -
backends need to be able to read the global config.
