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b2: fix multipart upload: corrupted on transfer: sizes differ XXX vs 0

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Before this change the b2 backend wasn't writing the metadata to the
object properly after a multipart upload.

The symptom of this was that sometimes it would give the error:

    corrupted on transfer: sizes differ XXX vs 0

This was fixed by returning the metadata in the chunk writer and setting it in Update.

See: https://forum.rclone.org/t/multipart-upload-to-b2-sometimes-failing-with-corrupted-on-transfer-sizes-differ/41829
This commit is contained in:
Nick Craig-Wood 2023-09-18 20:41:31 +01:00
parent 9277ca1e54
commit 6072d314e1
2 changed files with 9 additions and 3 deletions
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6
backend/b2/b2.go
View File

@ -1930,12 +1930,16 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
return err
}
} else if size > int64(o.fs.opt.UploadCutoff) {
_, err := multipart.UploadMultipart(ctx, src, in, multipart.UploadMultipartOptions{
chunkWriter, err := multipart.UploadMultipart(ctx, src, in, multipart.UploadMultipartOptions{
Open: o.fs,
OpenOptions: options,
})
if err != nil {
return err
}
up := chunkWriter.(*largeUpload)
return o.decodeMetaDataFileInfo(up.info)
}
modTime := src.ModTime(ctx)

4
backend/b2/upload.go
View File

@ -85,6 +85,7 @@ type largeUpload struct {
uploads []*api.GetUploadPartURLResponse // result of get upload URL calls
chunkSize int64 // chunk size to use
src *Object // if copying, object we are reading from
info *api.FileInfo // final response with info about the object
}
// newLargeUpload starts an upload of object o from in with metadata in src
@ -352,7 +353,8 @@ func (up *largeUpload) Close(ctx context.Context) error {
if err != nil {
return err
}
return up.o.decodeMetaDataFileInfo(&response)
up.info = &response
return nil
}
// Abort aborts the large upload