I had a large backup running last night writing directly to tape.  In
the morning the process to backup onsite tapes to the offsite copy
started.  That process was waiting on the tape being written by the
client backup.  But the client backup was stalled, i.e. it was no longer
sending data to the tsm server and a q sessions showed the backup in a
RecvW state.  Any ideas on how to diagnose what caused the stall
condition or how to fix it?

David