* Enable writeback_cache and async_dio FUSE options
Fixes#7978
- Update mount_std.go to use EnableWriteback and EnableAsyncDio from go-fuse
- Add go.mod replace directive to use local go-fuse with capability support
- Remove temporary workaround that disabled these options
This enables proper FUSE kernel capability negotiation for writeback cache
and async direct I/O, improving performance for small writes and concurrent
direct I/O operations.
* Address PR review comments
- Remove redundant nil checks for writebackCache and asyncDio flags
- Update go.mod replace directive to use seaweedfs/go-fuse fork instead of local path
* Add TODO comment for go.mod replace directive
The replace directive must use a local path until seaweedfs/go-fuse#1 is merged.
After merge, this should be updated to use the proper version.
* Use seaweedfs/go-fuse v2.9.0 instead of local repository
Replace local path with seaweedfs/go-fuse v2.9.0 fork which includes
the writeback_cache and async_dio capability support.
* Use github.com/seaweedfs/go-fuse/v2 directly without replace directive
- Updated all imports to use github.com/seaweedfs/go-fuse/v2
- Removed replace directive from go.mod
- Using seaweedfs/go-fuse v2.0.0-20260106181308-87f90219ce09 which includes:
* writeback_cache and async_dio support
* Corrected module path
* Update to seaweedfs/go-fuse v2.9.1
Use v2.9.1 tag which includes the corrected module path
(github.com/seaweedfs/go-fuse/v2) along with writeback_cache
and async_dio support.
* mount: skip directory caching on file lookup and write
When opening or creating a file in a directory that hasn't been cached yet,
don't list the entire directory. Instead:
- For reads: fetch only the single file's metadata directly from the filer
- For writes: create on filer but skip local cache insertion
This fixes a performance issue where opening a file in a directory
with millions of files would hang because EnsureVisited() had to
list all entries before the open could complete.
The directory will still be cached when explicitly listed (ReadDir),
but individual file operations now bypass the full directory caching.
Key optimizations:
- Extract shared lookupEntry() method to eliminate code duplication
- Skip EnsureVisited on Lookup (file open)
- Skip cache insertion on Mknod, Mkdir, Symlink, Link if dir not cached
- Skip cache update on file sync/flush if dir not cached
- If directory IS cached and entry not found, return ENOENT immediately
Fixes#7145
* mount: add error handling for meta cache insert/update operations
Handle errors from metaCache.InsertEntry and metaCache.UpdateEntry calls
instead of silently ignoring them. This prevents silent cache inconsistencies
and ensures errors are properly propagated.
Files updated:
- filehandle_read.go: handle InsertEntry error in downloadRemoteEntry
- weedfs_file_sync.go: handle InsertEntry error in doFlush
- weedfs_link.go: handle UpdateEntry and InsertEntry errors in Link
- weedfs_symlink.go: handle InsertEntry error in Symlink
* mount: use error wrapping (%w) for consistent error handling
Use %w instead of %v in fmt.Errorf to preserve the original error,
allowing it to be inspected up the call stack with errors.Is/As.
A POSIX filesystem does not implicitly create parent directories when
they do not exist. Directories must be explicitly created and
permissions be set.
This also fixes a bug where asynchronous operations would create a
file in the filer before the parent directory was created. If the
file was a symlink or another special type of file the directory
would inherit that type and become unusable in the mounted FS.
