Failing disk or SATA cable?

Matt84 · Feb 18, 2018

One of my pools has 4x WD Red drives in a RAIDz1 and my system emailed me with the following errors overnight. Searching the forums this seems to be either a drive error or a SATA cable error. How can I determine which one it is?

Code:

Feb 18 10:10:02 freenas (ada3:ahcich5:0:0:0): READ_FPDMA_QUEUED. ACB: 60 b0 30 a9 dc 40 bd 01 00 00 00 00
Feb 18 10:10:02 freenas (ada3:ahcich5:0:0:0): CAM status: ATA Status Error
Feb 18 10:10:02 freenas (ada3:ahcich5:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Feb 18 10:10:02 freenas (ada3:ahcich5:0:0:0): RES: 41 40 b0 a9 dc 40 bd 01 00 00 00
Feb 18 10:10:02 freenas (ada3:ahcich5:0:0:0): Retrying command
Feb 18 10:10:05 freenas (ada3:ahcich5:0:0:0): READ_FPDMA_QUEUED. ACB: 60 b0 30 a9 dc 40 bd 01 00 00 00 00
Feb 18 10:10:05 freenas (ada3:ahcich5:0:0:0): CAM status: ATA Status Error
Feb 18 10:10:05 freenas (ada3:ahcich5:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Feb 18 10:10:05 freenas (ada3:ahcich5:0:0:0): RES: 41 40 b0 a9 dc 40 bd 01 00 00 00
Feb 18 10:10:05 freenas (ada3:ahcich5:0:0:0): Retrying command
Feb 18 10:10:09 freenas (ada3:ahcich5:0:0:0): READ_FPDMA_QUEUED. ACB: 60 b0 30 a9 dc 40 bd 01 00 00 00 00
Feb 18 10:10:09 freenas (ada3:ahcich5:0:0:0): CAM status: ATA Status Error
Feb 18 10:10:09 freenas (ada3:ahcich5:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Feb 18 10:10:09 freenas (ada3:ahcich5:0:0:0): RES: 41 40 b0 a9 dc 40 bd 01 00 00 00
Feb 18 10:10:09 freenas (ada3:ahcich5:0:0:0): Retrying command
Feb 18 10:10:12 freenas (ada3:ahcich5:0:0:0): READ_FPDMA_QUEUED. ACB: 60 b0 30 a9 dc 40 bd 01 00 00 00 00
Feb 18 10:10:12 freenas (ada3:ahcich5:0:0:0): CAM status: ATA Status Error
Feb 18 10:10:12 freenas (ada3:ahcich5:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Feb 18 10:10:12 freenas (ada3:ahcich5:0:0:0): RES: 41 40 b0 a9 dc 40 bd 01 00 00 00
Feb 18 10:10:12 freenas (ada3:ahcich5:0:0:0): Retrying command
Feb 18 10:10:16 freenas (ada3:ahcich5:0:0:0): READ_FPDMA_QUEUED. ACB: 60 b0 30 a9 dc 40 bd 01 00 00 00 00
Feb 18 10:10:16 freenas (ada3:ahcich5:0:0:0): CAM status: ATA Status Error
Feb 18 10:10:16 freenas (ada3:ahcich5:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Feb 18 10:10:16 freenas (ada3:ahcich5:0:0:0): RES: 41 40 b0 a9 dc 40 bd 01 00 00 00
Feb 18 10:10:16 freenas (ada3:ahcich5:0:0:0): Error 5, Retries exhausted

Looking at my zpool status I also found:

Code:

  pool: data
 state: ONLINE
  scan: scrub repaired 88K in 11h52m with 0 errors on Sun Feb 18 11:52:54 2018
config:

		NAME											STATE	 READ WRITE CKSUM
		data											ONLINE	   0	 0	 0
		  raidz1-0									  ONLINE	   0	 0	 0
			gptid/ed0ecf8b-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0
			gptid/ee3b366f-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0
			gptid/ef6c43ac-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0
			gptid/f08f8ee8-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0

errors: No known data errors

smartctl -a /dev/ada3 reports the below. When I have had disk failures before usually I see pending sectors, reallocated sectors, or offline uncorrectable errors start increasing but in this case they have not:

Code:

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:	<removed>
LU WWN Device Id: <removed>
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:	Mon Feb 19 08:27:41 2018 ACDT
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:				(57120) 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:		( 570) 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	   -	   5
  3 Spin_Up_Time			0x0027   185   178   021	Pre-fail  Always	   -	   7733
  4 Start_Stop_Count		0x0032   096   096   000	Old_age   Always	   -	   4891
  5 Reallocated_Sector_Ct   0x0033   200   200   140	Pre-fail  Always	   -	   0
  7 Seek_Error_Rate		 0x002e   200   200   000	Old_age   Always	   -	   0
  9 Power_On_Hours		  0x0032   069   069   000	Old_age   Always	   -	   22733
 10 Spin_Retry_Count		0x0032   100   100   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	   -	   62
192 Power-Off_Retract_Count 0x0032   200   200   000	Old_age   Always	   -	   18
193 Load_Cycle_Count		0x0032   196   196   000	Old_age   Always	   -	   13422
194 Temperature_Celsius	 0x0022   120   100   000	Old_age   Always	   -	   32
196 Reallocated_Event_Count 0x0032   200   200   000	Old_age   Always	   -	   0
197 Current_Pending_Sector  0x0032   200   200   000	Old_age   Always	   -	   0
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   100   253   000	Old_age   Offline	  -	   0

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_first_error
# 1  Short offline	   Completed without error	   00%	 22459		 -
# 2  Short offline	   Completed without error	   00%	 22241		 -
# 3  Short offline	   Completed without error	   00%	 22085		 -
# 4  Short offline	   Completed without error	   00%	 21915		 -
# 5  Short offline	   Completed without error	   00%	 21744		 -
# 6  Short offline	   Completed without error	   00%	 21574		 -
# 7  Short offline	   Completed without error	   00%	 21407		 -
# 8  Short offline	   Completed without error	   00%	 21235		 -
# 9  Short offline	   Completed without error	   00%	 21072		 -
#10  Short offline	   Completed without error	   00%	 20903		 -
#11  Short offline	   Completed without error	   00%	 20737		 -
#12  Short offline	   Completed without error	   00%	 20565		 -
#13  Short offline	   Completed without error	   00%	 20427		 -
#14  Short offline	   Completed without error	   00%	 20332		 -
#15  Short offline	   Completed without error	   00%	 20123		 -
#16  Short offline	   Completed without error	   00%	 19892		 -
#17  Short offline	   Completed without error	   00%	 19728		 -
#18  Short offline	   Completed without error	   00%	 19566		 -
#19  Short offline	   Completed without error	   00%	 19397		 -
#20  Short offline	   Completed without error	   00%	 19234		 -
#21  Short offline	   Completed without error	   00%	 19078		 -

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.

Looking at the results of smartctl -x /dev/ada3 I noticed the following in the error log section. Does this mean it is the actual drive itself, or it still could be the cable or the drive?

Code:

SMART Extended Comprehensive Error Log Version: 1 (6 sectors)
Device Error Count: 5
		CR	 = Command Register
		FEATR  = Features Register
		COUNT  = Count (was: Sector Count) Register
		LBA_48 = Upper bytes of LBA High/Mid/Low Registers ]  ATA-8
		LH	 = LBA High (was: Cylinder High) Register	]   LBA
		LM	 = LBA Mid (was: Cylinder Low) Register	  ] Register
		LL	 = LBA Low (was: Sector Number) Register	 ]
		DV	 = Device (was: Device/Head) Register
		DC	 = Device Control Register
		ER	 = Error register
		ST	 = Status register
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 5 [4] occurred at disk power-on lifetime: 22711 hours (946 days + 7 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 bd dc a9 b0 40 00  Error: UNC at LBA = 0x1bddca9b0 = 7480322480

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 b0 00 90 00 01 bd dc a9 e0 40 08  2d+00:30:56.381  READ FPDMA QUEUED
  60 00 b0 00 88 00 01 bd dc a9 30 40 08  2d+00:30:56.381  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 40 08  2d+00:30:56.377  READ LOG EXT
  60 00 b0 00 78 00 01 bd dc a9 e0 40 08  2d+00:30:52.973  READ FPDMA QUEUED
  60 00 b0 00 70 00 01 bd dc a9 30 40 08  2d+00:30:52.973  READ FPDMA QUEUED

Error 4 [3] occurred at disk power-on lifetime: 22711 hours (946 days + 7 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 bd dc a9 b0 40 00  Error: UNC at LBA = 0x1bddca9b0 = 7480322480

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 b0 00 78 00 01 bd dc a9 e0 40 08  2d+00:30:52.973  READ FPDMA QUEUED
  60 00 b0 00 70 00 01 bd dc a9 30 40 08  2d+00:30:52.973  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 40 08  2d+00:30:52.969  READ LOG EXT
  60 00 b0 00 60 00 01 bd dc a9 e0 40 08  2d+00:30:49.565  READ FPDMA QUEUED
  60 00 b0 00 58 00 01 bd dc a9 30 40 08  2d+00:30:49.565  READ FPDMA QUEUED

Error 3 [2] occurred at disk power-on lifetime: 22711 hours (946 days + 7 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 bd dc a9 b0 40 00  Error: UNC at LBA = 0x1bddca9b0 = 7480322480

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 b0 00 60 00 01 bd dc a9 e0 40 08  2d+00:30:49.565  READ FPDMA QUEUED
  60 00 b0 00 58 00 01 bd dc a9 30 40 08  2d+00:30:49.565  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 40 08  2d+00:30:49.561  READ LOG EXT
  60 00 b0 00 48 00 01 bd dc a9 e0 40 08  2d+00:30:46.158  READ FPDMA QUEUED
  60 00 b0 00 40 00 01 bd dc a9 30 40 08  2d+00:30:46.158  READ FPDMA QUEUED

Error 2 [1] occurred at disk power-on lifetime: 22711 hours (946 days + 7 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 bd dc a9 b0 40 00  Error: UNC at LBA = 0x1bddca9b0 = 7480322480

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 b0 00 48 00 01 bd dc a9 e0 40 08  2d+00:30:46.158  READ FPDMA QUEUED
  60 00 b0 00 40 00 01 bd dc a9 30 40 08  2d+00:30:46.158  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 40 08  2d+00:30:46.154  READ LOG EXT
  60 00 b0 00 28 00 01 bd dc a9 30 40 08  2d+00:30:42.774  READ FPDMA QUEUED
  60 00 b0 00 20 00 01 bd dc a8 80 40 08  2d+00:30:42.772  READ FPDMA QUEUED

Error 1 [0] occurred at disk power-on lifetime: 22711 hours (946 days + 7 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 bd dc a9 b0 40 00  Error: UNC at LBA = 0x1bddca9b0 = 7480322480

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 b0 00 28 00 01 bd dc a9 30 40 08  2d+00:30:42.774  READ FPDMA QUEUED
  60 00 b0 00 20 00 01 bd dc a8 80 40 08  2d+00:30:42.772  READ FPDMA QUEUED
  60 00 b0 00 18 00 01 bd dc a7 d0 40 08  2d+00:30:42.772  READ FPDMA QUEUED
  60 00 b0 00 10 00 01 bd dc a7 20 40 08  2d+00:30:42.771  READ FPDMA QUEUED
  60 00 b0 00 08 00 01 bd dc a6 70 40 08  2d+00:30:42.770  READ FPDMA QUEUED

Any thoughts would be appreciated?

Stux · Feb 18, 2018

Looks more like the drive, since there are no UDMA errors.

That’s a lot of load cycles btw, have you got the drive set to spin down?

Redcoat · Feb 18, 2018

No long tests set up?

Johnnie Black · Feb 19, 2018

Looks like a disk problem, extended SMART test will confirm.

Matt84 · Feb 19, 2018

Yes I have the drives set to spin down. Power is too expensive where I live in Australia. I have 4x WD Red 4TB drives which average 4w idling and 6x Seagate 8TB drives which average 6w idling. That is approximately 56w of power, 1.344kWh per day, 490.56kWh per year, which at our power price of 47c/kWh is $230 just for having the disks idling. A 4TB WD Red is currently $179 so even if I have a drive failure per year, I am still coming out ahead. The spin down may shorted the life of the drives, but that is a risk I am willing to take. I have all critical data backed up on external offline storage which is updated and verified monthly so I am not worried about data loss.

I checked my FreeNAS config and it seems only the short test is configured. I have completed a long test on the drive and it returned no errors

Code:

SMART Self-test log structure revision number 1
Num  Test_Description	Status				  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline	Completed without error	   00%	 22744		 -

I'm running another scrub on the pool to see what happens. To replace the drive or monitor the drive, that is the question?

Johnnie Black · Feb 19, 2018

If the extended test passed keep monitoring, one attribute to monitor is the read_raw_rate, ideally it should be zero, but low single digits can be OK, though never a good sign.

Matt84 · Feb 19, 2018

Ah I see the relationship now with attribute Raw_Read_Error_Rate and the 5 errors listed in smartctl -x output. I will monitor for now and if it gets worse, I will get a new drive. Warranty on these drives lasts until May according to the WD website. I might have longer if I can find my receipt. Not sure how I will go with an RMA of a drive that is passing the long test though.

Johnnie Black · Feb 19, 2018

If it gets worse it will likely fail the extended test

Matt84 · Feb 19, 2018

I woke to a FreeNAS critial alert this morning:

Code:

The volume data (ZFS) state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected.

I checked the zpool status for the data pool and found the below:

Code:

  pool: data
 state: ONLINE
status: One or more devices has experienced an unrecoverable error.  An
		attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
		using 'zpool clear' or replace the device with 'zpool replace'.
   see: http://illumos.org/msg/ZFS-8000-9P
  scan: scrub repaired 44K in 11h43m with 0 errors on Tue Feb 20 07:26:04 2018
config:

		NAME											STATE	 READ WRITE CKSUM
		data											ONLINE	   0	 0	 0
		  raidz1-0									  ONLINE	   0	 0	 0
			gptid/ed0ecf8b-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 1
			gptid/ee3b366f-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0
			gptid/ef6c43ac-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0
			gptid/f08f8ee8-8926-11e6-aeed-0cc47aca83c4  ONLINE	   0	 0	 0

errors: No known data errors

The Raw_Read_Error_Rate has not increased, and the drive is not reporting any reallocated or pending sectors. I'm running another long SMART test. Hopefully this one fails so I can warranty the drive. It is definately the same drive; ada3.

Code:

									  Name  Status  Components
gptid/d0e4e4d7-86fb-11e6-893a-0cc47aca83c4	 N/A  da0p2
gptid/d001a048-86fb-11e6-893a-0cc47aca83c4	 N/A  da1p2
gptid/d296008c-86fb-11e6-893a-0cc47aca83c4	 N/A  da2p2
gptid/d1ba5376-86fb-11e6-893a-0cc47aca83c4	 N/A  da3p2
gptid/d468cd90-86fb-11e6-893a-0cc47aca83c4	 N/A  da4p2
gptid/d37ba2de-86fb-11e6-893a-0cc47aca83c4	 N/A  da5p2
gptid/ee3b366f-8926-11e6-aeed-0cc47aca83c4	 N/A  da6p2
gptid/ef6c43ac-8926-11e6-aeed-0cc47aca83c4	 N/A  da7p2
gptid/87a492cc-872f-11e6-83ad-0cc47aca83c4	 N/A  da8p1
gptid/87b5c21a-872f-11e6-83ad-0cc47aca83c4	 N/A  da8p2
gptid/9eb068a9-e943-11e6-aa25-0cc47aca83c4	 N/A  ada0p2
gptid/9edaadfb-e943-11e6-aa25-0cc47aca83c4	 N/A  ada1p2
gptid/f08f8ee8-8926-11e6-aeed-0cc47aca83c4	 N/A  ada2p2
gptid/ed0ecf8b-8926-11e6-aeed-0cc47aca83c4	 N/A  ada3p2

Matt84 · Feb 23, 2018

Update, I've done a few more long tests and scrubs, and it seems the drive is behaving now. I still don't trust it though. I'm talking with WD support to see the best course of action as the drive is still in warranty.

ere109 · Feb 27, 2018

Keep us updated. I recently had two drives start registering checksum errors, and I'm taking one step at a time: updated firmware, replaced cables. Next, I'll swap out ports, and if necessary, replace drives.

sehang · Feb 27, 2018

I have the similar problem before. Please make sure:

1. Your HBA card is working properly, I had a bad HBA card before thus cause disk failure in a random manner.
2. Make sure your have sufficient power supply for each disk especially if you have sata to molex connectors (these connectors are really bad).
3. Make sure you do not connect too many disks to a single power cable. E.g. Do not use Sata extended cables, etc.

If your disks have a (random) failure on heavy I/O, it most likely one of above situations hit your problem. Otherwise, you can swap the disk to different cables to see whether the same disk reported the error again.

Hope you can resolve the problem soon.

ere109 · Feb 28, 2018

Thank you for those tips. I'd never considered the number of drives connected to one cable. My SATA power cables have three plugs each, so I have each cable connected to three hard drives on a 550w Corsair PS. So many variables...

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