mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-16 03:29:01 +08:00
d4566d4aaa
* compare chunks by timestamp
* fix slab clearing error
* fix test compilation
* move oldest chunk to sealed, instead of by fullness
* lock on fh.entryViewCache
* remove verbose logs
* revert slat clearing
* less logs
* less logs
* track write and read by timestamp
* remove useless logic
* add entry lock on file handle release
* use mem chunk only, swap file chunk has problems
* comment out code that maybe used later
* add debug mode to compare data read and write
* more efficient readResolvedChunks with linked list
* small optimization
* fix test compilation
* minor fix on writer
* add SeparateGarbageChunks
* group chunks into sections
* turn off debug mode
* fix tests
* fix tests
* tmp enable swap file chunk
* Revert "tmp enable swap file chunk"
This reverts commit 985137ec47.
* simple refactoring
* simple refactoring
* do not re-use swap file chunk. Sealed chunks should not be re-used.
* comment out debugging facilities
* either mem chunk or swap file chunk is fine now
* remove orderedMutex as *semaphore.Weighted
not found impactful
* optimize size calculation for changing large files
* optimize performance to avoid going through the long list of chunks
* still problems with swap file chunk
* rename
* tiny optimization
* swap file chunk save only successfully read data
* fix
* enable both mem and swap file chunk
* resolve chunks with range
* rename
* fix chunk interval list
* also change file handle chunk group when adding chunks
* pick in-active chunk with time-decayed counter
* fix compilation
* avoid nil with empty fh.entry
* refactoring
* rename
* rename
* refactor visible intervals to *list.List
* refactor chunkViews to *list.List
* add IntervalList for generic interval list
* change visible interval to use IntervalList in generics
* cahnge chunkViews to *IntervalList[*ChunkView]
* use NewFileChunkSection to create
* rename variables
* refactor
* fix renaming leftover
* renaming
* renaming
* add insert interval
* interval list adds lock
* incrementally add chunks to readers
Fixes:
1. set start and stop offset for the value object
2. clone the value object
3. use pointer instead of copy-by-value when passing to interval.Value
4. use insert interval since adding chunk could be out of order
* fix tests compilation
* fix tests compilation
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package mount
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import (
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"net/http"
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"time"
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"github.com/hanwen/go-fuse/v2/fuse"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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)
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// CopyFileRange copies data from one file to another from and to specified offsets.
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//
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// See https://man7.org/linux/man-pages/man2/copy_file_range.2.html
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// See https://github.com/libfuse/libfuse/commit/fe4f9428fc403fa8b99051f52d84ea5bd13f3855
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/**
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* Copy a range of data from one file to another
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*
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* Niels de Vos: • libfuse: add copy_file_range() support
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*
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* Performs an optimized copy between two file descriptors without the
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* additional cost of transferring data through the FUSE kernel module
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* to user space (glibc) and then back into the FUSE filesystem again.
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*
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* In case this method is not implemented, applications are expected to
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* fall back to a regular file copy. (Some glibc versions did this
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* emulation automatically, but the emulation has been removed from all
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* glibc release branches.)
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*/
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func (wfs *WFS) CopyFileRange(cancel <-chan struct{}, in *fuse.CopyFileRangeIn) (written uint32, code fuse.Status) {
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// flags must equal 0 for this syscall as of now
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if in.Flags != 0 {
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return 0, fuse.EINVAL
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}
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// files must exist
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fhOut := wfs.GetHandle(FileHandleId(in.FhOut))
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if fhOut == nil {
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return 0, fuse.EBADF
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}
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fhIn := wfs.GetHandle(FileHandleId(in.FhIn))
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if fhIn == nil {
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return 0, fuse.EBADF
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}
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// lock source and target file handles
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fhOut.Lock()
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defer fhOut.Unlock()
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fhOut.entryLock.Lock()
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defer fhOut.entryLock.Unlock()
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if fhOut.entry == nil {
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return 0, fuse.ENOENT
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}
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if fhIn.fh != fhOut.fh {
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fhIn.Lock()
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defer fhIn.Unlock()
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fhIn.entryLock.Lock()
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defer fhIn.entryLock.Unlock()
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}
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// directories are not supported
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if fhIn.entry.IsDirectory || fhOut.entry.IsDirectory {
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return 0, fuse.EISDIR
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}
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glog.V(4).Infof(
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"CopyFileRange %s fhIn %d -> %s fhOut %d, [%d,%d) -> [%d,%d)",
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fhIn.FullPath(), fhIn.fh,
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fhOut.FullPath(), fhOut.fh,
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in.OffIn, in.OffIn+in.Len,
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in.OffOut, in.OffOut+in.Len,
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)
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data := make([]byte, in.Len)
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totalRead, err := readDataByFileHandle(data, fhIn, int64(in.OffIn))
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if err != nil {
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glog.Warningf("file handle read %s %d: %v", fhIn.FullPath(), totalRead, err)
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return 0, fuse.EIO
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}
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data = data[:totalRead]
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if totalRead == 0 {
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return 0, fuse.OK
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}
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// put data at the specified offset in target file
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fhOut.dirtyPages.writerPattern.MonitorWriteAt(int64(in.OffOut), int(in.Len))
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fhOut.entry.Content = nil
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fhOut.dirtyPages.AddPage(int64(in.OffOut), data, fhOut.dirtyPages.writerPattern.IsSequentialMode(), time.Now().UnixNano())
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fhOut.entry.Attributes.FileSize = uint64(max(int64(in.OffOut)+totalRead, int64(fhOut.entry.Attributes.FileSize)))
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fhOut.dirtyMetadata = true
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written = uint32(totalRead)
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// detect mime type
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if written > 0 && in.OffOut <= 512 {
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fhOut.contentType = http.DetectContentType(data)
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}
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return written, fuse.OK
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}
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