[galaxy-dev] Empty files when importing with no copy from NFS source

Hi, While trying to import some fastq files to a data library, using "Upload directory of files" and "Link to files without copying into Galaxy", I end with empty datasets. My data files are accessed through NFS and I'm using the recommended option -noac: 10.2.90.89:/projects on /local/projects type nfs (rw,noac,sloppy,addr=10.2.90.89) To import the files, I created links to them in the directory configured in universe_wsgi.ini. If I try to import the same files but with the option "Copy files into Galaxy", the files are correctly imported. Any advice what to look for? Thanks, Carlos