lsm/seaweedfs
1
0
Fork 0
mirror of https://github.com/seaweedfs/seaweedfs.git synced 2025-12-17 17:51:20 +08:00
Code Issues Actions 32 Packages Projects Releases Wiki Activity

file size support set file length

Browse Source 
use Attr.FileSize and TotalChunkSize to determine file size
This commit is contained in:
Chris Lu
2020-08-15 09:32:47 -07:00
parent c03bb180eb
commit c647deace1
16 changed files with 73 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
weed/filesys/file.go
View File

@@ -7,12 +7,13 @@ import (
"sort"
"time"
"github.com/seaweedfs/fuse"
"github.com/seaweedfs/fuse/fs"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/seaweedfs/fuse"
"github.com/seaweedfs/fuse/fs"
)
const blockSize = 512
@@ -35,6 +36,7 @@ type File struct {
entryViewCache []filer2.VisibleInterval
isOpen int
reader io.ReaderAt
dirtyMetadata bool
}
func (file *File) fullpath() util.FullPath {
@@ -43,7 +45,7 @@ func (file *File) fullpath() util.FullPath {
func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
glog.V(4).Infof("file Attr %s, open:%v, existing attr: %+v", file.fullpath(), file.isOpen, attr)
glog.V(5).Infof("file Attr %s, open:%v, existing attr: %+v", file.fullpath(), file.isOpen, attr)
if file.isOpen <= 0 {
if err := file.maybeLoadEntry(ctx); err != nil {
@@ -54,7 +56,7 @@ func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
attr.Inode = file.fullpath().AsInode()
attr.Valid = time.Second
attr.Mode = os.FileMode(file.entry.Attributes.FileMode)
attr.Size = filer2.TotalSize(file.entry.Chunks)
attr.Size = filer2.FileSize(file.entry)
if file.isOpen > 0 {
attr.Size = file.entry.Attributes.FileSize
glog.V(4).Infof("file Attr %s, open:%v, size: %d", file.fullpath(), file.isOpen, attr.Size)
@@ -107,22 +109,31 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
if req.Valid.Size() {
glog.V(4).Infof("%v file setattr set size=%v", file.fullpath(), req.Size)
glog.V(4).Infof("%v file setattr set size=%v chunks=%d", file.fullpath(), req.Size, len(file.entry.Chunks))
if req.Size < filer2.TotalSize(file.entry.Chunks) {
// fmt.Printf("truncate %v \n", fullPath)
var chunks []*filer_pb.FileChunk
var truncatedChunks []*filer_pb.FileChunk
for _, chunk := range file.entry.Chunks {
int64Size := int64(chunk.Size)
if chunk.Offset+int64Size > int64(req.Size) {
// this chunk is truncated
int64Size = int64(req.Size) - chunk.Offset
}
if int64Size > 0 {
chunks = append(chunks, chunk)
if int64Size > 0 {
chunks = append(chunks, chunk)
glog.V(4).Infof("truncated chunk %+v from %d to %d\n", chunk, chunk.Size, int64Size)
chunk.Size = uint64(int64Size)
} else {
glog.V(4).Infof("truncated whole chunk %+v\n", chunk)
truncatedChunks = append(truncatedChunks, chunk)
}
}
}
file.wfs.deleteFileChunks(truncatedChunks)
file.entry.Chunks = chunks
file.entryViewCache = nil
file.reader = nil
file.dirtyMetadata = true
}
file.entry.Attributes.FileSize = req.Size
}