# sudo fuser -km /dev/sdb2
Cannot stat file /proc/7628/fd/1023: Permission denied
Cannot stat file /proc/11523/fd/5: Permission denied
Cannot stat file /proc/11523/fd/6: Permission denied
Cannot stat file /proc/11523/fd/7: Permission denied
Cannot stat file /proc/11523/fd/8: Permission denied
Cannot stat file /proc/11523/fd/9: Permission denied
Cannot stat file /proc/11523/fd/10: Permission denied
Cannot stat file /proc/11523/fd/11: Permission denied
Cannot stat file /proc/11523/fd/62: Permission denied
Cannot stat file /proc/11523/fd/64: Permission denied
Cannot stat file /proc/11523/fd/1023: Permission denied
Cannot stat file /proc/14688/fd/6: Permission denied
Cannot stat file /proc/14688/fd/7: Permission denied
Cannot stat file /proc/14688/fd/8: Permission denied
Cannot stat file /proc/14688/fd/9: Permission denied
Cannot stat file /proc/14688/fd/10: Permission denied
Cannot stat file /proc/14688/fd/11: Permission denied
Cannot stat file /proc/14688/fd/12: Permission denied
Cannot stat file /proc/16040/fd/4: Permission denied
Cannot stat file /proc/16040/fd/6: Permission denied
Cannot stat file /proc/16040/fd/7: Permission denied
Cannot stat file /proc/16040/fd/8: Permission denied
Cannot stat file /proc/16040/fd/9: Permission denied
Cannot stat file /proc/16054/fd/6: Permission denied
Cannot stat file /proc/16054/fd/7: Permission denied
Cannot stat file /proc/16054/fd/8: Permission denied
Cannot stat file /proc/16054/fd/9: Permission denied
Cannot stat file /proc/16054/fd/10: Permission denied
Cannot stat file /proc/16054/fd/11: Permission denied
Cannot stat file /proc/16054/fd/12: Permission denied
Cannot stat file /proc/16054/fd/16: Permission denied
Cannot stat file /proc/16054/fd/17: Permission denied
/dev/sdb2:            5520c 24141