Hi freenas Forum,
I started to get multiple Critical errors on my freenas build recently.
My current built is :
freenas 9.3 - supermicro X11SSM-F - 2x16Gb kingston ran - 2x4Tb WD drive (red)
I searched a bit online and found that i should run :
smartctl -t long /dev/ada1
And the result is:
Iam not sure what to do next to solve those multiple errors ?
i was following this article to try to solve the unreadable sectors:
https://dekoder.wordpress.com/2014/10/08/fixing-freenas-currently-unreadable-pending-sectors-error/
But in the comment sections, people seems to say it not really a good solution to solve this.
The hard drive is still under warranty so i could bring it back to the shop if needed. But if this is solvable with some command lines maybe i should give it a go ?
Any advice is welcome! thanks!
I started to get multiple Critical errors on my freenas build recently.

My current built is :
freenas 9.3 - supermicro X11SSM-F - 2x16Gb kingston ran - 2x4Tb WD drive (red)
I searched a bit online and found that i should run :
smartctl -t long /dev/ada1
And the result is:
smartctl 6.5 2016-05-07 r4318 [FreeBSD 10.3-STABLE amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red
Device Model: WDC WD40EFRX-68WT0N0
Serial Number: WD-WCC4E4EL4476
LU WWN Device Id: 5 0014ee 2634c9fae
Firmware Version: 82.00A82
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sat Jun 24 12:42:59 2017 SGT
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: ( 121) The previous self-test completed having
the read element of the test failed.
Total time to complete Offline
data collection: (51540) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 515) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x703d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 260
3 Spin_Up_Time 0x0027 182 175 021 Pre-fail Always - 7866
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 50
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 027 001 000 Old_age Always - 65586
9 Power_On_Hours 0x0032 096 096 000 Old_age Always - 3245
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 50
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 9
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 295
194 Temperature_Celsius 0x0022 115 111 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 6
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 11
SMART Error Log Version: 1
ATA Error Count: 73 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 73 occurred at disk power-on lifetime: 3089 hours (128 days + 17 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 e8 8c 18 41 Error: UNC at LBA = 0x01188ce8 = 18386152
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 00 68 8c 18 41 08 5d+04:16:10.917 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:16:04.866 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:57.801 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:51.721 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:48.405 READ DMA
Error 72 occurred at disk power-on lifetime: 3089 hours (128 days + 17 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 e8 8c 18 41 Error: UNC at LBA = 0x01188ce8 = 18386152
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 00 68 8c 18 41 08 5d+04:16:04.866 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:57.801 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:51.721 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:48.405 READ DMA
Error 71 occurred at disk power-on lifetime: 3089 hours (128 days + 17 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 68 8c 18 41 Error: UNC at LBA = 0x01188c68 = 18386024
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 00 68 8c 18 41 08 5d+04:15:57.801 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:51.721 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:48.405 READ DMA
Error 70 occurred at disk power-on lifetime: 3089 hours (128 days + 17 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 e8 8c 18 41 Error: UNC at LBA = 0x01188ce8 = 18386152
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 00 68 8c 18 41 08 5d+04:15:51.721 READ DMA
c8 00 00 68 8c 18 41 08 5d+04:15:48.405 READ DMA
Error 69 occurred at disk power-on lifetime: 3089 hours (128 days + 17 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 e8 8c 18 41 Error: UNC at LBA = 0x01188ce8 = 18386152
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 00 68 8c 18 41 08 5d+04:15:48.405 READ DMA
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed: read failure 90% 3100 8349048
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.
Iam not sure what to do next to solve those multiple errors ?
i was following this article to try to solve the unreadable sectors:
https://dekoder.wordpress.com/2014/10/08/fixing-freenas-currently-unreadable-pending-sectors-error/
But in the comment sections, people seems to say it not really a good solution to solve this.
The hard drive is still under warranty so i could bring it back to the shop if needed. But if this is solvable with some command lines maybe i should give it a go ?
Any advice is welcome! thanks!