Zpool status degraded

[zs3223]

All,

Last night I received and error saying that my zpool was degraded and that one of the drives was removed by an administrator. As a result I ran zpool clean NAS which cleared out the error. I then scrubbed the pool but I am now receiving the below error message. Do you think the drive that was originally removed from the pool is still causing problems and should be replaced?

Code:

[root@freenas ~]# zpool status -v|less                                                                                             
  pool: NAS                                                                                                                        
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: scrub repaired 788K in 1h25m with 0 errors on Sat Jul  9 01:37:34 2016                                                     
config:                                                                                                                            
                                                                                                                                   
        NAME                                            STATE     READ WRITE CKSUM                                                 
        NAS                                             DEGRADED     0     0     0                                                 
          raidz2-0                                      DEGRADED     0     0     0                                                 
            gptid/da4b033c-0ce0-11e6-b23c-d050997eebf5  ONLINE       0     0     0                                                 
            gptid/db5b2629-0ce0-11e6-b23c-d050997eebf5  ONLINE       0     0     0                                                 
            gptid/dc7f5445-0ce0-11e6-b23c-d050997eebf5  DEGRADED     0     0   196  too many errors                                
            gptid/dd99642d-0ce0-11e6-b23c-d050997eebf5  ONLINE       0     0     0                                                 
            gptid/deb99316-0ce0-11e6-b23c-d050997eebf5  ONLINE       0     0     0                                                 
            gptid/dfe5d181-0ce0-11e6-b23c-d050997eebf5  ONLINE       0     0     0                                                 
                                                                                                                                   
errors: No known data errors                                                                                                       
                                                                                                                                   
  pool: freenas-boot                                                                                                               
state: ONLINE                                                                                                                     
  scan: scrub repaired 0 in 0h1m with 0 errors on Sat Jul  2 03:46:27 2016                                                         
config:                                                                                                                            
                                                                                                                                   
        NAME        STATE     READ WRITE CKSUM                                                                                     
        freenas-boot  ONLINE       0     0     0                                                                                   
          da0p2     ONLINE       0     0     0                                                                                     
                                                                                                                                   
errors: No known data errors 

 

[SweetAndLow]

Clearing the error and running a scrub doesn't do anything to fix the problem.

What is your hardware and freenas version. Include your HDD controller and firmware version if using an expansion card. Also what are the smart values for that drive? Your probably have a bad controller or failing HDD.

 

[zs3223]

freenas build: FreeNAS-9.10-STABLE-201606270534 (dd17351)
Motherboard: ASRock Rack Mini ITX DDR3 1333 Motherboards C2550D4I
CPU: Intel(R) Atom(TM) CPU C2550 @ 2.40GHz (Part of Motherboard)
RAM: Crucial 16GB DDR3-1600 ECC (CT2KIT102472BD160B)
Hard Drives: 6 - 2TB WD Red Drives
Power Supply: Corsair CX 500W

No hardware raid controller.

Here's the smart test for the drive that seems to be the problem.

Code:

[root@freenas] ~# smartctl -a /dev/ada2
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 WD20EFRX-68EUZN0
Serial Number:    WD-WMC4M1815368
LU WWN Device Id: 5 0014ee 60403cc98
Firmware Version: 80.00A80
User Capacity:    2,000,398,934,016 bytes [2.00 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 Jul  9 11:19:00 2016 EDT
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:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection: Enabled.
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:                (27360) 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:        ( 276) 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       -       0
  3 Spin_Up_Time            0x0027   183   169   021    Pre-fail  Always       -       3841
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       38
  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   083   083   000    Old_age   Always       -       12564
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       -       38
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       30
193 Load_Cycle_Count        0x0032   189   189   000    Old_age   Always       -       34492
194 Temperature_Celsius     0x0022   117   108   000    Old_age   Always       -       30
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   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       1
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
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
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.

 

[SweetAndLow]

Step 1. Start running automated smart tests on all your drives.

Step 2. Your motherboard has poorly supported marvel sata controllers. One is ok to use but the other is not. Make sure your drives are not plugged into any marvel controllers or at least using the one that works.

 

[zs3223]

I setup automated smart testing on all of my drives. Do I need to wait to see if I receive errors from those tests in order to determine if one of my drives is bad? Is there a way to kick off one of these tests other than scheduling it through the web GUI?

So I should make sure that all of my drives are plugged into the intel sata controller if they aren't already. Does this problem occur randomly with the controllers because the system has been up and running for a few months now without any errors.

Thanks for all the help.

 

[SweetAndLow]

The marvel controllers experience timeout issues during heavy load and randomly. You might also just now be noticing a problem.

Double check what sata ports you are using and that your sata cables are connected correctly.

You can run manual smart tests with smartctl -t short /dev/adaX where -t can be short or long and adaX references your drive id.