Need help interpreting errors

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Howard Swope

Howard Swope

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Nov 19, 2015
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I just upgraded from freenas from an earlier version 8 to 9.3.1. I am now seeing errors that I am having difficulty interpreting. I am seeing error reports from smartctrl and zpool. And it seems like my array switches from healthy to degraded every other day.

First the zpool status:

Code:
[XXX] ~# zpool status -x -v
  pool: volume0
state: ONLINE
status: One or more devices has experienced an error resulting in data
    corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
    entire pool from backup.
   see: http://illumos.org/msg/ZFS-8000-8A
  scan: scrub repaired 20.1M in 9h7m with 155 errors on Thu Nov 19 18:07:18 2015
config:

    NAME                                            STATE     READ WRITE CKSUM
    volume0                                         ONLINE       0     0     0
      raidz1-0                                      ONLINE       0     0     0
        gptid/a653dc0f-8853-11e2-8909-002590a8e414  ONLINE       0     0     1
        gptid/a6be6a5f-8853-11e2-8909-002590a8e414  ONLINE       0     0     0
        gptid/a729e2c2-8853-11e2-8909-002590a8e414  ONLINE       0     0     0
        gptid/a78f764d-8853-11e2-8909-002590a8e414  ONLINE       0     0     0

errors: Permanent errors have been detected in the following files:

        /var/db/system/cores/syslog-ng.core
        /var/db/system/syslog-567b59bd58814d6ebad2ebdfdfba568a/log/telemetry.json.bz2


This looks to me like there is a problem with drive 0. And it looks like there is some type of corruption in two system files. But I am not sure what to do with this information.

smartctl output:

Just basic output shows passed across the board:

Code:
[XXX] ~# smartctl -H /dev/ada0
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

[XXX] ~# smartctl -H /dev/ada1
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

[XXX] ~# smartctl -H /dev/ada2
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

[XXX] ~# smartctl -H /dev/ada3
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED


But looking at all information reveals errors on disk 0 and 3:

Disk 0:
Code:
[XXX] ~# smartctl -a /dev/ada0
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.14 (AF)
Device Model:     ST3000DM001-9YN166
Serial Number:    W1F18JE7
LU WWN Device Id: 5 000c50 053880e63
Firmware Version: CC4B
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Fri Nov 20 04:54:56 2015 EST

==> WARNING: A firmware update for this drive may be available,
see the following Seagate web pages:
http://knowledge.seagate.com/articles/en_US/FAQ/207931en
http://knowledge.seagate.com/articles/en_US/FAQ/223651en

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:      ( 241)    Self-test routine in progress...
                    10% of test remaining.
Total time to complete Offline
data collection:         (  584) 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 342) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SCT capabilities:            (0x3085)    SCT Status supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   097   097   006    Pre-fail  Always       -       87436760
  3 Spin_Up_Time            0x0003   093   092   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       45
  5 Reallocated_Sector_Ct   0x0033   051   051   036    Pre-fail  Always       -       64736
  7 Seek_Error_Rate         0x000f   064   060   030    Pre-fail  Always       -       2965858
  9 Power_On_Hours          0x0032   074   074   000    Old_age   Always       -       23562
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       45
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   094   083   000    Old_age   Always       -       188 188 188
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   067   058   045    Old_age   Always       -       33 (Min/Max 28/34)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       39
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       98
194 Temperature_Celsius     0x0022   033   042   000    Old_age   Always       -       33 (0 15 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       23562h+42m+12.795s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       1987424826513
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       14117367880170

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       Self-test routine in progress 10%     23562         -
# 2  Short offline       Completed without error       00%     23558         -
# 3  Short offline       Interrupted (host reset)      10%     23557         -
# 4  Short offline       Completed: read failure       10%     23533         505182249
# 5  Short offline       Completed without error       00%     23509         -
# 6  Short offline       Completed without error       00%     23485         -
# 7  Short offline       Interrupted (host reset)      10%     23462         -

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.


Disk 3
Code:
[XXX] ~# smartctl -a /dev/ada3
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p28 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.14 (AF)
Device Model:     ST3000DM001-9YN166
Serial Number:    W1F1ADE8
LU WWN Device Id: 5 000c50 053872c9f
Firmware Version: CC4B
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Fri Nov 20 05:01:54 2015 EST

==> WARNING: A firmware update for this drive may be available,
see the following Seagate web pages:
http://knowledge.seagate.com/articles/en_US/FAQ/207931en
http://knowledge.seagate.com/articles/en_US/FAQ/223651en

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:      ( 121)    The previous self-test completed having
                    the read element of the test failed.
Total time to complete Offline
data collection:         (  575) 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 341) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SCT capabilities:            (0x3085)    SCT Status supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   087   077   006    Pre-fail  Always       -       235749051
  3 Spin_Up_Time            0x0003   093   092   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       48
  5 Reallocated_Sector_Ct   0x0033   053   052   036    Pre-fail  Always       -       62032
  7 Seek_Error_Rate         0x000f   064   060   030    Pre-fail  Always       -       3000421
  9 Power_On_Hours          0x0032   074   074   000    Old_age   Always       -       23565
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       48
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   001   001   000    Old_age   Always       -       3054
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       -       1 1 1
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   072   062   045    Old_age   Always       -       28 (Min/Max 24/30)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       43
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       99
194 Temperature_Celsius     0x0022   028   040   000    Old_age   Always       -       28 (0 14 0 0 0)
197 Current_Pending_Sector  0x0012   084   084   000    Old_age   Always       -       2704
198 Offline_Uncorrectable   0x0010   084   084   000    Old_age   Offline      -       2704
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       23565h+20m+39.111s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       2071987855371
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       8952376693249

SMART Error Log Version: 1
ATA Error Count: 3040 (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 3040 occurred at disk power-on lifetime: 23565 hours (981 days + 21 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 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 50 ff ff ff 4f 00  39d+23:22:51.211  READ FPDMA QUEUED
  b0 d5 01 00 4f c2 40 00  39d+23:22:51.210  SMART READ LOG
  2f 00 01 10 00 00 00 00  39d+23:22:51.095  READ LOG EXT
  60 00 50 ff ff ff 4f 00  39d+23:22:47.959  READ FPDMA QUEUED
  b0 da 00 00 4f c2 40 00  39d+23:22:47.724  SMART RETURN STATUS

Error 3039 occurred at disk power-on lifetime: 23565 hours (981 days + 21 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 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 50 ff ff ff 4f 00  39d+23:22:47.959  READ FPDMA QUEUED
  b0 da 00 00 4f c2 40 00  39d+23:22:47.724  SMART RETURN STATUS
  2f 00 01 10 00 00 00 00  39d+23:22:47.602  READ LOG EXT
  60 00 50 ff ff ff 4f 00  39d+23:22:45.059  READ FPDMA QUEUED
  35 00 08 ff ff ff 4f 00  39d+23:22:45.059  WRITE DMA EXT

Error 3038 occurred at disk power-on lifetime: 23565 hours (981 days + 21 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 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 50 ff ff ff 4f 00  39d+23:22:45.059  READ FPDMA QUEUED
  35 00 08 ff ff ff 4f 00  39d+23:22:45.059  WRITE DMA EXT
  b0 d1 01 01 4f c2 40 00  39d+23:22:45.051  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  25 00 00 ff ff ff 4f 00  39d+23:22:40.668  READ DMA EXT
  b0 d0 01 00 4f c2 40 00  39d+23:22:40.393  SMART READ DATA

Error 3037 occurred at disk power-on lifetime: 23565 hours (981 days + 21 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 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 00 ff ff ff 4f 00  39d+23:22:40.668  READ DMA EXT
  b0 d0 01 00 4f c2 40 00  39d+23:22:40.393  SMART READ DATA
  25 00 00 ff ff ff 4f 00  39d+23:22:37.786  READ DMA EXT
  ec 00 01 00 00 00 40 00  39d+23:22:37.778  IDENTIFY DEVICE
  25 00 00 ff ff ff 4f 00  39d+23:22:33.977  READ DMA EXT

Error 3036 occurred at disk power-on lifetime: 23565 hours (981 days + 21 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 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 00 ff ff ff 4f 00  39d+23:22:37.786  READ DMA EXT
  ec 00 01 00 00 00 40 00  39d+23:22:37.778  IDENTIFY DEVICE
  25 00 00 ff ff ff 4f 00  39d+23:22:33.977  READ DMA EXT
  25 00 00 ff ff ff 4f 00  39d+23:22:27.818  READ DMA EXT
  25 00 00 ff ff ff 4f 00  39d+23:22:24.033  READ DMA EXT

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed: read failure       90%     23561         340012704
# 2  Short offline       Completed: read failure       90%     23559         340468640
# 3  Short offline       Completed: read failure       90%     23536         339926120
# 4  Short offline       Completed: read failure       10%     23512         506323470
# 5  Short offline       Completed: read failure       90%     23488         340468576
# 6  Short offline       Completed: read failure       10%     23465         340467664

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.


Despite the fact that overall the drives show as PASSED, drive 0 and 3 are showing errors.

Any advice on how to proceed is appreciated.
 
danb35

danb35

Hall of Famer
Joined
Aug 16, 2011
Messages
15,504
I'm not seeing the errors on ada0, other than a single failed SMART self-test, but ada3 is definitely on its last legs. You need to replace it, stat, following the manual's instructions for replacing failed disks. Make sure you pull the correct disk--the smartctl output gives you its serial number.
 
T

titan_rw

Guru
Joined
Sep 1, 2012
Messages
586
danb35 said:
I'm not seeing the errors on ada0, other than a single failed SMART self-test
Click to expand...

Other than the 64 thousand reallocated sectors of course.

But no, there were no logged hard errors reported to the OS, the drive is simply remapping sectors internally. I'd still replace it though.

Definitely do disk3 first, it's bad enough the disk is having to tell the OS "Umm, yea, about that sector you want,, too bad". And it's done that 3,000 times based on the read error count.

Because this is a z1, any read errors from any of the other disks while replacing disk3 is going to result in more lost data.
 
danb35

danb35

Hall of Famer
Joined
Aug 16, 2011
Messages
15,504
titan_rw said:
Other than the 64 thousand reallocated sectors of course.
Click to expand...
Ooh, yeah, that's bad. I was looking at 187, 197, and 198, and missed that one.
 
C

cyberjock

Inactive Account
Joined
Mar 25, 2012
Messages
19,525
By the way... if you read around nobody here will tell you to use the output of -H. The reason.. it doesn't tell you what you think it tells you. ;)
 
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