Degraded: The volume mainshare (ZFS) status is DEGRADED help

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shaf

Dabbler
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Mar 20, 2016
Messages
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Hi,

Apologies if this is a simple question but I need some help in identify if there is a problem with my pool and whether is requires a HDD replacement.

My pool is currently in a DEGRADED state, I have 4 (6TB) disks in my pool with 2 disk redundancy. When looking at the status one of the disks (da5p2) is in a DEGRADED state (Checksum 280?).

I've ran this command: smartctl -q noserial -a /dev/da5
Results below:

Code:
smartctl 6.5 2016-05-07 r4318 [FreeBSD 11.0-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 WD60EFRX-68MYMN1
Firmware Version: 82.00A82
User Capacity:	6,001,175,126,016 bytes [6.00 TB]
Sector Sizes:	 512 bytes logical, 4096 bytes physical
Rotation Rate:	5700 rpm
Device is:		In smartctl database [for details use: -P show]
ATA Version is:   ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:	Wed Feb 21 14:13:30 2018 GMT
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:				( 2984) 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:		( 684) minutes.
Conveyance self-test routine
recommended polling time:		(   5) minutes.
SCT capabilities:			  (0x303d) 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	   -	   0
  3 Spin_Up_Time			0x0027   195   185   021	Pre-fail  Always	   -	   9241
  4 Start_Stop_Count		0x0032   100   100   000	Old_age   Always	   -	   80
  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   064   064   000	Old_age   Always	   -	   26321
 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	   -	   78
192 Power-Off_Retract_Count 0x0032   200   200   000	Old_age   Always	   -	   63
193 Load_Cycle_Count		0x0032   197   197   000	Old_age   Always	   -	   10660
194 Temperature_Celsius	 0x0022   118   107   000	Old_age   Always	   -	   34
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%	 26319		 -
# 2  Short offline	   Completed without error	   00%	 26307		 -
# 3  Short offline	   Completed without error	   00%	 26295		 -
# 4  Short offline	   Completed without error	   00%	 26283		 -
# 5  Short offline	   Completed without error	   00%	 26271		 -
# 6  Short offline	   Completed without error	   00%	 26259		 -
# 7  Short offline	   Completed without error	   00%	 26247		 -
# 8  Short offline	   Completed without error	   00%	 26235		 -
# 9  Short offline	   Completed without error	   00%	 26223		 -
#10  Short offline	   Completed without error	   00%	 26211		 -
#11  Short offline	   Completed without error	   00%	 26199		 -
#12  Short offline	   Completed without error	   00%	 26187		 -
#13  Short offline	   Completed without error	   00%	 26175		 -
#14  Short offline	   Completed without error	   00%	 26173		 -
#15  Short offline	   Completed without error	   00%	 26163		 -
#16  Short offline	   Completed without error	   00%	 26151		 -
#17  Short offline	   Completed without error	   00%	 26139		 -
#18  Short offline	   Completed without error	   00%	 26127		 -
#19  Short offline	   Completed without error	   00%	 26115		 -
#20  Short offline	   Completed without error	   00%	 26103		 -
#21  Short offline	   Completed without error	   00%	 26091		 -

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.
 
T

tvsjr

Guru
Joined
Aug 29, 2015
Messages
959
Checksum issues are sometimes caused by issues with cabling, the controller, or the PSU. You aren't running long SMART tests on that drive (which you should schedule a couple times a month), so I'd start with that:
smartctl -t long /dev/da5
 
danb35

danb35

Hall of Famer
Joined
Aug 16, 2011
Messages
15,504
Why are you running short tests every 12 hours? That seems a bit excessive--and it also means that if you are running long tests, they'll scroll off the list in 10 days. Agree with the recommendation to run a long test, and check your cable connections.
 
S

shaf

Dabbler
Joined
Mar 20, 2016
Messages
28
Thanks. Running long test now. How will I see the results of this?

I don't know why it's running short tests every 12 hours. I believe I left everything as default.
What should it be set to and how can I change it?

Edit: Just seen the smart tests tasks screen and indeed it's set to run every 12 hours!
 
danb35

danb35

Hall of Famer
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Messages
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shaf said:
How will I see the results of this?
Click to expand...
Once it finishes, run the same smartctl command you used for your first post.
 
S

shaf

Dabbler
Joined
Mar 20, 2016
Messages
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Thanks for your help! Much appreciated.

I will add the output from the long test once it's finished. I have a new drive on standby if required.
 
S

shaf

Dabbler
Joined
Mar 20, 2016
Messages
28
Please find below the results of the long SMART test. It seems to me that there are no errors on the disk. Does this mean the problem lies elsewhere?

Code:
smartctl 6.5 2016-05-07 r4318 [FreeBSD 11.0-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 WD60EFRX-68MYMN1
Firmware Version: 82.00A82
User Capacity:	6,001,175,126,016 bytes [6.00 TB]
Sector Sizes:	 512 bytes logical, 4096 bytes physical
Rotation Rate:	5700 rpm
Device is:		In smartctl database [for details use: -P show]
ATA Version is:   ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:	Thu Feb 22 05:34:58 2018 GMT
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:	  ( 249) Self-test routine in progress...
										90% of test remaining.
Total time to complete Offline
data collection:				( 2984) 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:		( 684) minutes.
Conveyance self-test routine
recommended polling time:		(   5) minutes.
SCT capabilities:			  (0x303d) 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	   -	   0
  3 Spin_Up_Time			0x0027   195   185   021	Pre-fail  Always	   -	   9241
  4 Start_Stop_Count		0x0032   100   100   000	Old_age   Always	   -	   80
  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   064   064   000	Old_age   Always	   -	   26336
 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	   -	   78
192 Power-Off_Retract_Count 0x0032   200   200   000	Old_age   Always	   -	   63
193 Load_Cycle_Count		0x0032   197   197   000	Old_age   Always	   -	   10660
194 Temperature_Celsius	 0x0022   114   107   000	Old_age   Always	   -	   38
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   200   200   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  Extended offline	Completed without error	   00%	 26334		 -
# 2  Short offline	   Completed without error	   00%	 26319		 -
# 3  Short offline	   Completed without error	   00%	 26307		 -
# 4  Short offline	   Completed without error	   00%	 26295		 -
# 5  Short offline	   Completed without error	   00%	 26283		 -
# 6  Short offline	   Completed without error	   00%	 26271		 -
# 7  Short offline	   Completed without error	   00%	 26259		 -
# 8  Short offline	   Completed without error	   00%	 26247		 -
# 9  Short offline	   Completed without error	   00%	 26235		 -
#10  Short offline	   Completed without error	   00%	 26223		 -
#11  Short offline	   Completed without error	   00%	 26211		 -
#12  Short offline	   Completed without error	   00%	 26199		 -
#13  Short offline	   Completed without error	   00%	 26187		 -
#14  Short offline	   Completed without error	   00%	 26175		 -
#15  Short offline	   Completed without error	   00%	 26173		 -
#16  Short offline	   Completed without error	   00%	 26163		 -
#17  Short offline	   Completed without error	   00%	 26151		 -
#18  Short offline	   Completed without error	   00%	 26139		 -
#19  Short offline	   Completed without error	   00%	 26127		 -
#20  Short offline	   Completed without error	   00%	 26115		 -
#21  Short offline	   Completed without error	   00%	 26103		 -

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.
 
S

shaf

Dabbler
Joined
Mar 20, 2016
Messages
28
zpool status below:

Code:
  pool: Mediavol1
 state: ONLINE
  scan: scrub repaired 0 in 5h37m with 0 errors on Sun Feb 11 05:37:40 2018
config:

		NAME											STATE	 READ WRITE CKSUM
		Mediavol1									   ONLINE	   0	 0	 0
		  mirror-0									  ONLINE	   0	 0	 0
			gptid/07643a8f-cf36-11e7-a268-000c2901a4f6  ONLINE	   0	 0	 0
			gptid/08208ef3-cf36-11e7-a268-000c2901a4f6  ONLINE	   0	 0	 0

errors: No known data errors

  pool: download
 state: ONLINE
  scan: scrub repaired 0 in 22h31m with 0 errors on Sun Feb 18 22:31:45 2018
config:

		NAME										  STATE	 READ WRITE CKSUM
		download									  ONLINE	   0	 0	 0
		  gptid/5b3935de-f121-11e5-94ca-d05099c0bec5  ONLINE	   0	 0	 0

errors: No known data errors

  pool: freenas-boot
 state: ONLINE
  scan: scrub repaired 0 in 0h0m with 0 errors on Thu Feb 15 03:45:03 2018
config:

		NAME		STATE	 READ WRITE CKSUM
		freenas-boot  ONLINE	   0	 0	 0
		  da0p2	 ONLINE	   0	 0	 0

errors: No known data errors

  pool: mainshare
 state: DEGRADED
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: resilvered 68.1M in 0h0m with 0 errors on Wed Feb 14 08:49:47 2018
config:

		NAME											STATE	 READ WRITE CKSUM
		mainshare									   DEGRADED	 0	 0	 0
		  raidz2-0									  DEGRADED	 0	 0	 0
			gptid/4dca0d9c-edd7-11e5-82b1-d05099c0bec5  DEGRADED	 0	 0   280  too many errors
			gptid/4e70b5ea-edd7-11e5-82b1-d05099c0bec5  ONLINE	   0	 0	 0
			gptid/4f0dcbe1-edd7-11e5-82b1-d05099c0bec5  ONLINE	   0	 0	 0
			gptid/4fb96ff1-edd7-11e5-82b1-d05099c0bec5  ONLINE	   0	 0	 0

errors: No known data errors
 
T

tvsjr

Guru
Joined
Aug 29, 2015
Messages
959
A SMART test isn't the end-all of all testing. A failed SMART test pretty much always means the drive is toast... but you can have a bad drive that won't fail a SMART test.

Checksum errors often crop up due to cabling/PSU/etc. issues. I'd go through all of that carefully. But I'd be prepared to swap the drive.
 
S

shaf

Dabbler
Joined
Mar 20, 2016
Messages
28
Thanks for the suggestions.

PSU - should affect other drives and not one specific drive? Only this drive has been producing these errors (started around a month ago).
Cabling - using a sas cable so it could be this - I will check.
Memory - I also read that memory could be an issue but again why only this drive?
 
T

tvsjr

Guru
Joined
Aug 29, 2015
Messages
959
PSU - maybe. If one rail is sagging a bit in voltage, that one drive may be a touch more sensitive than others. All depends on component tolerances.
Cabling - Most likely - power or SAS cable
Memory - Not likely if it's tied to one drive. You could always run a memtest, if you can take the system offline for that long.
 
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