Hard Drive Integrator

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About Hard Drive Integrator

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  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