The files for the repository are found in /cvmfs/larsoft.opensciencegrid.org.
They are initially read-only until a transaction is started.
Do cvmfs_server transaction larsoft.opensciencegrid.org to initiate a transaction.
This makes the repository writable.
If there was a transaction already under way the command will inform you.
Update files in /cvmfs/larsoft.opensciencegrid.org.
If you make a mistake, all changes can be discarded and the transaction aborted by running cvmfs_server abort larsoft.opensciencegrid.org.
Do cvmfs_server publish larsoft.opensciencegrid.org.
This processes all the changes, makes them part of the published repository, and makes the repository read-only again.
Updates should then appear on worker nodes typically within a half hour, but sometimes it will be longer if the update was large or if the Stratum 1 is busy with doing a large update of another repository.
Install a larsoft release
The product directory is /cvmfs/larsoft.opensciencegrid.org/products