Process command line options
Open the file outtmp.h5
Processing all datasets in the file...
Going to process dataset:/DSET_ERR...
Open the dataset
Retrieve the dataset's layout
Dataset is a chunked dataset
Retrieve the dataset's chunk indexing type
Dataset's chunk indexing type is not version 1 B-tree
Converting the dataset...
Error encountered
Close the file
h5format_convert error: unable to downgrade dataset "/DSET_ERR"