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
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
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