Opened 12 days ago

Last modified 12 days ago

#1227 new defect

SMART test generates possible false positives

Reported by: hse Owned by:
Priority: minor Milestone: undecided
Component: smartd Version: 7.0
Keywords: Cc:

Description

Hello.

On some servers we use CRUCIAL CT2000MX500SSD1 ssd's. We test them regularly every day. The tests finishes most of the time without problem but sometimes we receive following notification:

This message was generated by the smartd daemon running on:

   host name:  example
   DNS domain: example.com

The following warning/error was logged by the smartd daemon:

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

Device info:
CT2000MX500SSD1, S/N:00000000000, WWN:000000000000000, FW:M3CR023, 2.00 TB

For details see host's SYSLOG.

You can also use the smartctl utility for further investigation.
No additional messages about this problem will be sent.

But when I check the SMART Self-test revisions there is no issue reported:

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%       199         -
# 2  Short offline       Completed without error       00%       191         -
# 3  Short offline       Completed without error       00%       182         -
# 4  Short offline       Completed without error       00%       174         -
# 5  Extended offline    Completed without error       00%       167         -
# 6  Short offline       Completed without error       00%       166         -
# 7  Short offline       Completed without error       00%       159         -
# 8  Short offline       Completed without error       00%       152         -
# 9  Short offline       Completed without error       00%       145         -
#10  Short offline       Completed without error       00%       139         -
#11  Short offline       Completed without error       00%       132         -
#12  Short offline       Completed without error       00%       125         -
#13  Extended offline    Completed without error       00%       119         -
#14  Short offline       Completed without error       00%       118         -
#15  Short offline       Completed without error       00%       111         -
#16  Short offline       Completed without error       00%       104         -
#17  Short offline       Completed without error       00%        96         -
#18  Short offline       Completed without error       00%        89         -
#19  Short offline       Completed without error       00%        82         -
#20  Short offline       Completed without error       00%        75         -
#21  Extended offline    Completed without error       00%        68         -

In the SMART Attributes there is no telling something is wrong with the device. No Pending sectors has been logged and the drive is completely new:

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       -       203
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       1
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   100   100   000    Old_age   Always       -       4
174 Unexpect_Power_Loss_Ct  0x0032   100   100   000    Old_age   Always       -       0
180 Unused_Reserve_NAND_Blk 0x0033   000   000   000    Pre-fail  Always       -       83
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   059   046   000    Old_age   Always       -       41 (Min/Max 0/54)
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   100   100   001    Old_age   Offline      -       0
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       -       2966529424
247 Host_Program_Page_Count 0x0032   100   100   000    Old_age   Always       -       56912802
248 FTL_Program_Page_Count  0x0032   100   100   000    Old_age   Always       -       149379986

smartctl -i /dev/sdx:

# smartctl -i /dev/sda
smartctl 7.0 2018-12-30 r4883 [x86_64-linux] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Crucial/Micron BX/MX1/2/3/500, M5/600, 1100 SSDs
Device Model:     CT2000MX500SSD1
Serial Number:    000000000000
LU WWN Device Id: 0 000000 000000000
Firmware Version: M3CR023
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Aug  7 13:09:20 2019 -00
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

So I am creating this as bug with false positive defect.

Thank you and have a nice day.

Change History (1)

comment:1 Changed 12 days ago by Christian Franke

Component: smartctlsmartd
Milestone: undecided

Please provide configuration line for this device from smartd.conf file.

Please check syslog for smartd ... Currently unreadable (pending) sectors messages.

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