Root filesystem going to Read-only Mode frquently

[mahesh]

I have been facing read-only filesystem error issue for past few weeks after my SMPS failure. I replaced SMPS with new one and system started to boot up. But quite frquently I am experiencing my primary hard disk partition /dev/sda1 goes to read-only mode for some unknown reasons. I was on Kubuntu 18.04 when i faced the issue.

I tried fsck ,e2fsck smartmontools as resolution steps those worked temporarily to get into read-write mode. e2fsck or smarmontools does not reveal any bad blocks either and test results show passed. I am attaching report of boot repair summary of my grub configuration.https://paste.ubuntu.com/p/jRTVMSSMkJ/

But whenever i start fresh again (booting up the system after a while) i begin to experience same issue again and again. I somehow managed to upgrade to 20.04 LTS and did grub update also. But read-only issue seem to happen again afraid this issue going to get worse resulting in hard disk failure.



murali@murali-kubuntu:~$ dmesg | grep -i ext4
     Code:

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[    2.021017] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[    5.087078] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro


murali@murali-kubuntu:~$ cat /var/log/syslog | grep sda1
Aug  9 00:01:29 murali-kubuntu kernel: [    1.088521]  sda: sda1 sda2 sda3 sda4 < sda5 s
da6 >
Aug  9 00:01:29 murali-kubuntu kernel: [    2.050626] EXT4-fs (sda1): mounted filesystem
 with ordered data mode. Opts: (null)
Aug  9 00:01:29 murali-kubuntu kernel: [    5.133534] EXT4-fs (sda1): re-mounted. Opts:
errors=remount-ro

Aug  9 07:54:11 murali-kubuntu kernel: [    2.021017] EXT4-fs (sda1): mounted filesystem
 with ordered data mode. Opts: (null)
Aug  9 07:54:11 murali-kubuntu kernel: [    5.087078] EXT4-fs (sda1): re-mounted. Opts:
errors=remount-ro
Aug  9 07:54:11 murali-kubuntu kernel: [    5.436163] lp: driver loaded but no devices f
ound
Will share any more specific outputs for guidance on better troubleshooting

murali@murali-kubuntu:/var/log$ sudo smartctl -a /dev/sda
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smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.0-80-generic] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.14 (AF)
Device Model:     ST1000DM003-1SB10C
Serial Number:    Z9A07LT5
LU WWN Device Id: 5 000c50 0871fdddd
Firmware Version: CC41
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Mon Aug  9 09:49:40 2021 IST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0) The previous self-test routine completed
                                        without error or no self-test has ever 
                                        been run.
Total time to complete Offline 
data collection:                (    0) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine 
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        ( 110) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x10a5) SCT Status supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED R
AW_VALUE
  1 Raw_Read_Error_Rate     0x000f   073   063   006    Pre-fail  Always       -       21890300
  3 Spin_Up_Time            0x0003   099   097   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   097   097   020    Old_age   Always       -       3362
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   079   060   045    Pre-fail  Always       -       88889325
  9 Power_On_Hours          0x0032   095   095   000    Old_age   Always       -       4927
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   097   097   020    Old_age   Always       -       3375
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0 0 0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   058   054   040    Old_age   Always       -       42 (Min/Max 34/44)
193 Load_Cycle_Count        0x0032   099   099   000    Old_age   Always       -       3368
194 Temperature_Celsius     0x0022   042   024   000    Old_age   Always       -       42 (0 24 0 0 0)
195 Hardware_ECC_Recovered  0x001a   003   001   000    Old_age   Always       -       21890300
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       4919h+32m+26.645s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       11894977732
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       18096867819

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_firs
t_error
# 1  Extended offline    Completed without error       00%      4927         -
# 2  Short offline       Completed without error       00%      4923         -
# 3  Extended offline    Interrupted (host reset)      00%      4920         -
# 4  Short offline       Completed without error       00%      4918         -
# 5  Extended offline    Aborted by host               90%      4918         -

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.