diff --git a/markets/retrievaladapter/provider.go b/markets/retrievaladapter/provider.go
index adc9d1b79..39640c03f 100644
--- a/markets/retrievaladapter/provider.go
+++ b/markets/retrievaladapter/provider.go
@@ -51,6 +51,7 @@ func (rpn *retrievalProviderNode) GetMinerWorkerAddress(ctx context.Context, min
 }
 
 func (rpn *retrievalProviderNode) UnsealSector(ctx context.Context, sectorID abi.SectorNumber, offset abi.UnpaddedPieceSize, length abi.UnpaddedPieceSize) (io.ReadCloser, error) {
+	log.Debugf("get sector %d, offset %d, length %d", sectorID, offset, length)
 	si, err := rpn.secb.SectorsStatus(ctx, sectorID, false)
 	if err != nil {
 		return nil, err