Устройство: / dev / sdf [SAT], 1 Текущий нечитаемый (ожидающий) сектор

В этом месяце я получил 3 письма от моей системы, которые содержат эту ошибку:

Device: /dev/sdf [SAT], 1 Currently unreadable (pending) sectors

Но при запуске smartctl я не вижу никаких доказательств того, что что-то не так , частота необработанных ошибок чтения равна 0. Почему я получаю эти ошибки?

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   100   100   000    Pre-fail  Always       -       0
  5 Reallocate_NAND_Blk_Cnt 0x0032   100   100   010    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       6161
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       67
171 Program_Fail_Count      0x0032   100   100   000    Old_age   Always       -       0
172 Erase_Fail_Count        0x0032   100   100   000    Old_age   Always       -       0
173 Ave_Block-Erase_Count   0x0032   096   096   000    Old_age   Always       -       66
174 Unexpect_Power_Loss_Ct  0x0032   100   100   000    Old_age   Always       -       26
180 Unused_Reserve_NAND_Blk 0x0033   000   000   000    Pre-fail  Always       -       41
183 SATA_Interfac_Downshift 0x0032   100   100   000    Old_age   Always       -       0
184 Error_Correction_Count  0x0032   100   100   000    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0022   065   035   000    Old_age   Always       -       35 (Min/Max 0/65)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   100   100   000    Old_age   Always       -       0
202 Percent_Lifetime_Remain 0x0030   096   096   001    Old_age   Offline      -       4
206 Write_Error_Rate        0x000e   100   100   000    Old_age   Always       -       0
210 Success_RAIN_Recov_Cnt  0x0032   100   100   000    Old_age   Always       -       0
246 Total_Host_Sector_Write 0x0032   100   100   000    Old_age   Always       -       12434743090
247 Host_Program_Page_Count 0x0032   100   100   000    Old_age   Always       -       219482532
248 FTL_Program_Page_Count  0x0032   100   100   000    Old_age   Always       -       500545158

SMART Error Log Version: 1
No Errors Logged

Вывод grep -i sdf / var / log / syslog *

/var/log/syslog.1:Jun 26 05:21:44 home smartd[1215]: Device: /dev/sdf [SAT], 1 Currently unreadable (pending) sectors
/var/log/syslog.1:Jun 26 05:21:44 home smartd[1215]: Device: /dev/sdf [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 70 to 65
/var/log/syslog.1:Jun 26 05:51:45 home smartd[1215]: Device: /dev/sdf [SAT], No more Currently unreadable (pending) sectors, warning condition reset after 1 email