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I believe my 256GB solid-state drive needs to be replaced, but I'd like to have some definitive indication of that before making the investment.

I'm running Ubuntu 18.04 on a laptop with a solid-state hard drive and full-disk encryption. Recently, during normal operation, the system put my root partition into read-only mode. After shutting down, the machine failed to boot, reporting a disk error.

I ran Ubuntu 20.04 from a flash drive, but the Disks utility did not report the machine's internal drive. I connected the drive using USB via an adapter, and then Disks did report the drive.

I was able to run a SMART test, and it passed (as far as I can tell; there's a lot of technical information--see the excerpt below). After this, I connected the drive via the machine's internal SATA interface, and it booted successfully.

The system has since exhibited this behavior a few times: it enters "read-only" mode, I reboot with the drive connected via USB, and it then becomes able to boot via the SATA connection.

What steps can I take to verify that the hard drive is to blame?

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   096   096   010    Pre-fail  Always       -       318
  9 Power_On_Hours          0x0032   094   094   000    Old_age   Always       -       27276
 12 Power_Cycle_Count       0x0032   093   093   000    Old_age   Always       -       6972
177 Wear_Leveling_Count     0x0013   089   089   000    Pre-fail  Always       -       373
179 Used_Rsvd_Blk_Cnt_Tot   0x0013   096   096   010    Pre-fail  Always       -       318
181 Program_Fail_Cnt_Total  0x0032   100   100   010    Old_age   Always       -       0
182 Erase_Fail_Count_Total  0x0032   100   100   010    Old_age   Always       -       0
183 Runtime_Bad_Block       0x0013   096   096   010    Pre-fail  Always       -       318
187 Uncorrectable_Error_Cnt 0x0032   095   095   000    Old_age   Always       -       42737
190 Airflow_Temperature_Cel 0x0032   077   051   000    Old_age   Always       -       23
195 ECC_Error_Rate          0x001a   001   001   000    Old_age   Always       -       42737
199 CRC_Error_Count         0x003e   099   099   000    Old_age   Always       -       281
235 POR_Recovery_Count      0x0012   099   099   000    Old_age   Always       -       206
241 Total_LBAs_Written      0x0032   099   099   000    Old_age   Always       -       52974713881

SMART Error Log Version: 1
No Errors Logged

$ uname -a
Linux bruce 4.15.0-99-generic #100-Ubuntu SMP Wed Apr 22 20:32:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.4 LTS
Release:        18.04
Codename:       bionic
Mike
  • 13

1 Answers1

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These specific errors indicate a problem...

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   096   096   010    Pre-fail  Always       -       318
183 Runtime_Bad_Block       0x0013   096   096   010    Pre-fail  Always       -       318
187 Uncorrectable_Error_Cnt 0x0032   095   095   000    Old_age   Always       -       42737
195 ECC_Error_Rate          0x001a   001   001   000    Old_age   Always       -       42737
199 CRC_Error_Count         0x003e   099   099   000    Old_age   Always       -       281

If this is a Samsung SSD, then download the Samsung Magician here and check for a firmware update.

You can also check for ncq errors with the command...

grep -i FPDMA /var/log/syslog*

If you find these, I'll give you a patch.

heynnema
  • 73,649