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mount: able to trim a file

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This commit is contained in:
Chris Lu 2020-01-20 00:00:08 -08:00
parent 1b0bfbaf59
commit 630f72f8c5
1 changed files with 11 additions and 2 deletions
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13
weed/filesys/file.go
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@ -102,9 +102,18 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
if req.Valid.Size() {
glog.V(3).Infof("%v file setattr set size=%v", file.fullpath(), req.Size)
if req.Size == 0 {
if req.Size < filer2.TotalSize(file.entry.Chunks) {
// fmt.Printf("truncate %v \n", fullPath)
file.entry.Chunks = nil
var chunks []*filer_pb.FileChunk
for _, chunk := range file.entry.Chunks {
if uint64(chunk.Offset)+chunk.Size > req.Size {
chunk.Size = req.Size - uint64(chunk.Offset)
}
if chunk.Size > 0 {
chunks = append(chunks, chunk)
}
}
file.entry.Chunks = chunks
file.entryViewCache = nil
}
file.entry.Attributes.FileSize = req.Size