address review

provider/lppiece/task_park_piece.go

@@ -175,6 +175,8 @@ func (p *ParkPieceTask) CanAccept(ids []harmonytask.TaskID, engine *harmonytask.
 }
 
 func (p *ParkPieceTask) TypeDetails() harmonytask.TaskTypeDetails {
+	const maxSizePiece = 64 << 30
+
 	return harmonytask.TaskTypeDetails{
 		Max:  p.max,
 		Name: "ParkPiece",
@@ -182,12 +184,35 @@ func (p *ParkPieceTask) TypeDetails() harmonytask.TaskTypeDetails {
 			Cpu:     1,
 			Gpu:     0,
 			Ram:     64 << 20,
-			Storage: nil, // TODO
+			Storage: p.sc.Storage(p.taskToRef, storiface.FTPiece, storiface.FTNone, maxSizePiece, storiface.PathSealing),
 		},
 		MaxFailures: 10,
 	}
 }
 
+func (p *ParkPieceTask) taskToRef(id harmonytask.TaskID) (lpffi.SectorRef, error) {
+	var pieceIDs []struct {
+		ID storiface.PieceNumber `db:"id"`
+	}
+
+	err := p.db.Select(context.Background(), &pieceIDs, `SELECT id FROM parked_pieces WHERE task_id = $1`, id)
+	if err != nil {
+		return lpffi.SectorRef{}, xerrors.Errorf("getting piece id: %w", err)
+	}
+
+	if len(pieceIDs) != 1 {
+		return lpffi.SectorRef{}, xerrors.Errorf("expected 1 piece id, got %d", len(pieceIDs))
+	}
+
+	pref := pieceIDs[0].ID.Ref()
+
+	return lpffi.SectorRef{
+		SpID:         int64(pref.ID.Miner),
+		SectorNumber: int64(pref.ID.Number),
+		RegSealProof: pref.ProofType,
+	}, nil
+}
+
 func (p *ParkPieceTask) Adder(taskFunc harmonytask.AddTaskFunc) {
 	p.TF.Set(taskFunc)
 }

provider/lpseal/task_sdr.go

@@ -187,8 +187,6 @@ func (s *SDRTask) getTicket(ctx context.Context, maddr address.Address) (abi.Sea
 }
 
 func (s *SDRTask) CanAccept(ids []harmonytask.TaskID, engine *harmonytask.TaskEngine) (*harmonytask.TaskID, error) {
-	// todo check storage (reserve too?)
-
 	id := ids[0]
 	return &id, nil
 }

storage/paths/remote.go

@@ -747,6 +747,8 @@ func (r *Remote) Reader(ctx context.Context, s storiface.SectorRef, offset, size
 	return nil, nil
 }
 
+// ReaderSeq creates a simple sequential reader for a file. Does not work for
+// file types which are a directory (e.g. FTCache).
 func (r *Remote) ReaderSeq(ctx context.Context, s storiface.SectorRef, ft storiface.SectorFileType) (io.ReadCloser, error) {
 	paths, _, err := r.local.AcquireSector(ctx, s, ft, storiface.FTNone, storiface.PathStorage, storiface.AcquireMove)
 	if err != nil {