1 migratedata  –log filename
2?  –f
3+ 
3?  –phase
3.1!migrate
3.1.1?  –checkpoint blocks 
3.1.2?  –resume
3.1 3.1!plan
3.1 verify
3.1.1?  –data
4  –destdir dest_directory_name 
5+ 
5 source_path