Hello,
The -v increase debug verbosity, check the link below for each operation with some example.
scan -v P.81 for example
command increases debug verbosity. This provides detailed logging information to
troubleshoot or debug in case an error or warning is reported
copy -v P.89 for example
Increase debug verbosity
sync -v P.92 for example
Increase debug verbosity
https://library.netapp.com/ecm/ecm_download_file/ECMLP2865035
Thanks