Before, rclone serve would crash when sent a SIGHUP which contradicts
the documentation - saying it should flush the directory caches.
Moved signal handling from the mount into the vfs layer, which now
handles SIGHUP on all uses of the VFS including mount and serve.
Fixes#8607
Before this change, when querying directories with large datasets, if
the query duration exceeded the directory cache expiration time, the
cache became invalid by the time results were retrieved. This means
every execution of `_readDir` triggers `_readDirFromEntries`,
resulting in prolonged processing times.
After this change we update the directory time with the time at the
end of the query.
This adds --vfs-metadata-extension which can be used to expose sidecar
files with file metadata in. These files don't exist in the listings
until they are accessed.
This commit modernizes Go usage. This was done with:
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...
Then files needed to be `go fmt`ed and a few comments needed to be
restored.
The modernizations include replacing
- if/else conditional assignment by a call to the built-in min or max functions added in go1.21
- sort.Slice(x, func(i, j int) bool) { return s[i] < s[j] } by a call to slices.Sort(s), added in go1.21
- interface{} by the 'any' type added in go1.18
- append([]T(nil), s...) by slices.Clone(s) or slices.Concat(s), added in go1.21
- loop around an m[k]=v map update by a call to one of the Collect, Copy, Clone, or Insert functions from the maps package, added in go1.21
- []byte(fmt.Sprintf...) by fmt.Appendf(nil, ...), added in go1.19
- append(s[:i], s[i+1]...) by slices.Delete(s, i, i+1), added in go1.21
- a 3-clause for i := 0; i < n; i++ {} loop by for i := range n {}, added in go1.22
In this commit
ceef78ce44 vfs: fix directory cache serving stale data
We added a new test which caused lots of integration test failures.
This fixes the problem by disabling the test unless the feature flag
DirModTimeUpdatesOnWrite is present on the remote.
The VFS directory cache layer didn't update directory entry properties
if they are reused after cache invalidation.
Update them unconditionally as newDir sets them to the same value and
setting a pointer is cheaper in both LoC as well as CPU cycles than a
branch.
Also add a test exercising this behavior.
Fixes#6335
Before this change, if --vfs-cache-mode writes or above was set and
--links was in use, when a symlink was saved then the VFS failed to
upload it. This meant when the VFS was restarted the link wasn't there
any more.
This was caused by the local backend, which we use to manage the VFS
cache, picking up the global --links flag.
This patch makes sure that the internal instantations of the local
backend in the VFS cache don't ever use the --links flag or the
--local-links flag even if specified on the command line.
Fixes#8367
This race would only happen when --dir-cache-time was very small.
This was noticed in the VFS tests when --dir-cache-time was 100 mS so
is unlikely to affect normal users.
In this commit
aaadb48d48 vfs: keep virtual directory status accurate and reduce deadlock potential
We reworked the virtual directory detection to use an atomic bool so
that we could run part of the cache forgetting only with a read lock.
Unfortunately this had a bug which meant that directories with virtual
items could be forgotten.
This commit changes the boolean into a count of virtual entries which
should be more accurate.
Fixes#8082
Before this change the --links flag when using the VFS override the
--links flag for the local backend which meant the local backend
needed explicit config to use links.
This fixes the problem by making the --links flag global and adding a
new --local-links flag and --vfs-links flags to control the features
individually if required.
This is somewhat limited in that it only resolves symlinks when files
are opened. This will work fine for the intended use in rclone mount,
but is inadequate for the other servers probably.
This changes log statements from log to fs package, which is required for --use-json-log
to properly make log output in JSON format. The recently added custom linting rule,
handled by ruleguard via gocritic via golangci-lint, warns about these and suggests
the alternative. Fixing was therefore basically running "golangci-lint run --fix",
although some manual fixup of mainly imports are necessary following that.
This converts the ChunkedReader into an interface and provides two
implementations one sequential and one parallel.
This can be used to improve the performance of the VFS on high
bandwidth or high latency links.
Fixes#4760
The vfs use the hardcoded OS encoding when creating temp file,
but decode it with encoding for the local filesystem (--local-encoding)
when copying it to remote.
This caused failures when the filenames contained special characters.
The hardcoded OS encoding is now used uniformly.
This also
- move in use options (Opt) from vfsflags to vfscommon
- change os.FileMode to vfscommon.FileMode in parameters
- rework vfscommon.FileMode and add tests
Before this change a panic could be overwritten with the message
fatal error: sync: unlock of unlocked mutex
This was because we temporarily unlocked the mutex, but failed to lock
it again if there was a panic.
This is code is never the cause of an error but it masks the
underlying error by overwriting the panic cause.
See: https://forum.rclone.org/t/serve-webdav-is-crashing-fatal-error-sync-unlock-of-unlocked-mutex/46300
Before this change, renaming a directory d failed to rename its key in
d.parent.items, which caused trouble later when doing Dir.Stat on a
subdirectory. This change fixes the issue.
Before this change, if a file shrunk in size on the remote then rclone
could get into an loop trying to download the file forever.
The symptom was repeating errors like this:
vfs cache: restart download failed: failed to start downloader: failed to open downloader: vfs reader: failed to open source file: invalid seek position
The fix was to check that file size in various places and makes sure
that we weren't trying to download too much data.
This was a problems with backends (like s3) which update the size of
the object on Open to the actual size of the object.
