[smartmontools-support] estimated life of nvme (power on hours via nvme command)

[James]

$ sudo nvme smart-log /dev/nvme0 --human-readable
Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning                        : 0
       Available Spare[0]             : 0
       Temp. Threshold[1]             : 0
       NVM subsystem Reliability[2]   : 0
       Read-only[3]                   : 0
       Volatile mem. backup failed[4] : 0
       Persistent Mem. RO[5]          : 0
temperature                             : 30 C
available_spare                         : 100%
available_spare_threshold               : 100%
percentage_used                         : 0%
endurance group critical warning summary: 0
data_units_read                         : 702,813
data_units_written                      : 496,053
host_read_commands                      : 5,949,268
host_write_commands                     : 4,050,438
controller_busy_time                    : 6
power_cycles                            : 84
power_on_hours                          : 6
unsafe_shutdowns                        : 3
media_errors                            : 0
num_err_log_entries                     : 224
Warning Temperature Time                : 0
Critical Composite Temperature Time     : 0
Temperature Sensor 2           : 30 C
Thermal Management T1 Trans Count       : 0
Thermal Management T2 Trans Count       : 0
Thermal Management T1 Total Time        : 0
Thermal Management T2 Total Time        : 0