Hard Drive Integrator

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Posts posted by Hard Drive Integrator


  1. Hi,
    We have several i7-6700TE computer systems running CentOS 7.4. We are putting out Transcend 420K 512GB SSD under a read write SSD load. Sometimes we get smartd warnings on systems running our tests. I would like to know What would cause "524288 Currently unreadable (pending) sectors" to show in the SMART logs. This number is always the same:
     
    zgrep unreadable /var/log/messages*
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:22:44 node0 smartd[1094]: Device: /dev/sda [SAT], 524288 Currently unreadable (pending) sectors
    /var/log/messages.3.gz:Jan 20 01:52:36 node0 smartd[1094]: Device: /dev/sda [SAT], No more Currently unreadable (pending) sectors, warning condition reset after 1 email
    smartctl -B +ssd420k.h -a /dev/sda
    smartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-693.2.2.el7.x86_64] (local build)
    Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
     
    === START OF INFORMATION SECTION ===
    Model Family:     SiliconMotion based SSDs
    Device Model:     TS512GSSD420K
    Serial Number:    D951420059
    Firmware Version: O1225G
    User Capacity:    512,110,190,592 bytes [512 GB]
    Sector Size:      512 bytes logical/physical
    Rotation Rate:    Solid State Device
    Device is:        In smartctl database [for details use: -P show]
    ATA Version is:   ACS-2 (minor revision not indicated)
    SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
    Local Time is:    Wed Jan 24 13:50:05 2018 EST
    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:  (0x00) Offline data collection activity
                                            was never started.
                                            Auto Offline Data Collection: Disabled.
    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:                    (0x71) SMART execute Offline immediate.
                                            No Auto Offline data collection support.
                                            Suspend Offline collection upon new
                                            command.
                                            No Offline surface scan supported.
                                            Self-test supported.
                                            Conveyance Self-test supported.
                                            Selective Self-test supported.
    SMART capabilities:            (0x0002) Does not save 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:        (   1) minutes.
    Conveyance self-test routine
    recommended polling time:        (   1) minutes.
     
    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
      1 Raw_Read_Error_Rate     0x0000   100   100   000    Old_age   Offline      -       0
      5 Reallocated_Sector_Ct   0x0000   100   100   000    Old_age   Offline      -       0
      9 Power_On_Hours          0x0000   100   100   000    Old_age   Offline      -       202
    12 Power_Cycle_Count       0x0000   100   100   000    Old_age   Offline      -       16
    160 Uncorrectable_Error_Cnt 0x0000   100   100   000    Old_age   Offline      -       0
    161 Valid_Spare_Block_Cnt   0x0000   100   100   000    Old_age   Offline      -       138
    163 Initial_Bad_Block_Count 0x0000   100   100   000    Old_age   Offline      -       27
    164 Total_Erase_Count       0x0000   100   100   000    Old_age   Offline      -       33759
    165 Max_Erase_Count         0x0000   100   100   000    Old_age   Offline      -       24
    166 Min_Erase_Count         0x0000   100   100   000    Old_age   Offline      -       0
    167 Average_Erase_Count     0x0000   100   100   000    Old_age   Offline      -       16
    168 Max_Erase_Count_of_Spec 0x0000   100   100   000    Old_age   Offline      -       3000
    169 Remaining_Lifetime_Perc 0x0000   100   100   000    Old_age   Offline      -       100
    175 Program_Fail_Count_Chip 0x0000   100   100   000    Old_age   Offline      -       0
    176 Erase_Fail_Count_Chip   0x0000   100   100   000    Old_age   Offline      -       0
    177 Wear_Leveling_Count     0x0000   100   100   050    Old_age   Offline      -       0
    178 Runtime_Invalid_Blk_Cnt 0x0000   100   100   000    Old_age   Offline      -       0
    181 Program_Fail_Cnt_Total  0x0000   100   100   000    Old_age   Offline      -       0
    182 Erase_Fail_Count_Total  0x0000   100   100   000    Old_age   Offline      -       0
    192 Power-Off_Retract_Count 0x0000   100   100   000    Old_age   Offline      -       4
    194 Temperature_Celsius     0x0000   100   100   000    Old_age   Offline      -       30
    195 Hardware_ECC_Recovered  0x0000   100   100   000    Old_age   Offline      -       229
    196 Reallocated_Event_Count 0x0000   100   100   016    Old_age   Offline      -       0
    197 Current_Pending_Sector  0x0000   100   100   000    Old_age   Offline      -       0
    198 Offline_Uncorrectable   0x0000   100   100   000    Old_age   Offline      -       0
    199 UDMA_CRC_Error_Count    0x0000   100   100   050    Old_age   Offline      -       0
    232 Available_Reservd_Space 0x0000   100   100   000    Old_age   Offline      -       100
    241 Host_Writes_32MiB       0x0000   100   100   000    Old_age   Offline      -       175763
    242 Host_Reads_32MiB        0x0000   100   100   000    Old_age   Offline      -       308024
    245 TLC_Writes_32MiB        0x0000   100   100   000    Old_age   Offline      -       270072
     
    SMART Error Log Version: 1
    No Errors Logged
     
    SMART Self-test log structure revision number 1
    No self-tests have been logged.  [To run self-tests, use: smartctl -t]
     
     
    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
        6        0    65535  Read_scanning was never started
    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.
     
    Please help!
     
    Kind Regards,
    Todd