Errors

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sapper

Dabbler
Joined
Feb 18, 2013
Messages
21
Hey all.

So for the past three day's I've woke up to a few errors in my nightly FreeNAS security output email. I'm not sure if this is just a SATA Cable issue or a drive issue.

The system is an
HP XW8600
Dual Xeon quad core E5440
24 GB DDR2 5300F ECC
4 x WD RED 2TB Drives RAIDz
FreeNAS 9.1.1 Release-x64

This is what I noticed and am unsure on how to proceed with it.

The Security Run Output email shows the following over and over again, around 75 times each

Code:
freenas.local kernel log messages:
+++ /tmp/security.2KfJlu2f    2014-03-29 03:01:00.000000000 -0600
+(ada1:ahcich1:0:0:0): READ_FPDMA_QUEUED. ACB: 60 50 a8 ed 7b 40 3a 00 00 00 00 00
+(ada1:ahcich1:0:0:0): CAM status: Uncorrectable parity/CRC error
+(ada1:ahcich1:0:0:0): Retrying command


Running zpool status -v shows the following:

Code:
 ~# zpool status -v
  pool: MEDIA-NAS
state: ONLINE
status: The pool is formatted using a legacy on-disk format.  The pool can
        still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'.  Once this is done, the
        pool will no longer be accessible on software that does not support feature
        flags.
  scan: scrub repaired 4K in 5h19m with 0 errors on Sat Mar 29 06:19:18 2014
config:
 
        NAME                                            STATE    READ WRITE CKSUM
        MEDIA-NAS                                      ONLINE      0    0    0
          raidz1-0                                      ONLINE      0    0    0
            gptid/d7cd16c8-bdc0-11e2-9508-002264220f03  ONLINE      0    0    0
            gptid/d83a132e-bdc0-11e2-9508-002264220f03  ONLINE      0    0    0
            gptid/d8a5f48e-bdc0-11e2-9508-002264220f03  ONLINE      0    0    0
            gptid/d91cd99c-bdc0-11e2-9508-002264220f03  ONLINE      0    0    0
 
errors: No known data errors


The Alert System icon in the Freenas GUI this morning was green, then changed colour a little later on saying: One or more devices has experienced an unrecoverable error.

I shut the system down and checked the SATA cable for /dev/ada1 and rebooted the system. The GUI Alert System Icon is now reporting everything is OK again.

Running smartctl -a /dev/ada1 shows the following SMART data:

Code:
 ~# smartctl -a /dev/ada1
smartctl 6.1 2013-03-16 r3800 [FreeBSD 9.1-STABLE amd64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
 
=== START OF INFORMATION SECTION ===
Model Family:    Western Digital Red (AF)
Device Model:    WDC WD20EFRX-68AX9N0
Serial Number:    WD-WMC300701078
LU WWN Device Id: 5 0014ee 058d0491e
Firmware Version: 80.00A80
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Sizes:    512 bytes logical, 4096 bytes physical
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: 3.0 Gb/s)
Local Time is:    Sat Mar 29 15:04:11 2014 MDT
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:                (27120) 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:        ( 274) minutes.
Conveyance self-test routine
recommended polling time:        (  5) minutes.
SCT capabilities:              (0x70bd) 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  177  175  021    Pre-fail  Always      -      4108
  4 Start_Stop_Count        0x0032  100  100  000    Old_age  Always      -      208
  5 Reallocated_Sector_Ct  0x0033  200  200  140    Pre-fail  Always      -      0
  7 Seek_Error_Rate        0x002e  100  253  000    Old_age  Always      -      0
  9 Power_On_Hours          0x0032  088  088  000    Old_age  Always      -      9437
10 Spin_Retry_Count        0x0032  100  100  000    Old_age  Always      -      0
11 Calibration_Retry_Count 0x0032  100  100  000    Old_age  Always      -      0
12 Power_Cycle_Count      0x0032  100  100  000    Old_age  Always      -      187
192 Power-Off_Retract_Count 0x0032  200  200  000    Old_age  Always      -      145
193 Load_Cycle_Count        0x0032  200  200  000    Old_age  Always      -      62
194 Temperature_Celsius    0x0022  115  105  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  200  200  000    Old_age  Offline      -      0
199 UDMA_CRC_Error_Count    0x0032  200  200  000    Old_age  Always      -      14
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  Short offline      Completed without error      00%      9378        -
# 2  Short offline      Completed without error      00%      9234        -
# 3  Extended offline    Completed without error      00%      9141        -
# 4  Short offline      Interrupted (host reset)      10%      9070        -
# 5  Short offline      Completed without error      00%      8900        -
# 6  Extended offline    Completed without error      00%      8783        -
# 7  Short offline      Completed without error      00%      8756        -
# 8  Short offline      Completed without error      00%      8708        -
# 9  Short offline      Completed without error      00%      8564        -
#10  Extended offline    Completed without error      00%      8471        -
#11  Short offline      Completed without error      00%      8413        -
#12  Short offline      Completed without error      00%      8228        -
#13  Extended offline    Completed without error      00%      8119        -
#14  Short offline      Completed without error      00%      8092        -
#15  Short offline      Completed without error      00%      7972        -
#16  Short offline      Completed without error      00%      7829        -
#17  Extended offline    Completed without error      00%      7736        -
#18  Short offline      Completed without error      00%      7673        -
#19  Short offline      Completed without error      00%      7493        -
#20  Extended offline    Completed without error      00%      7376        -
#21  Short offline      Completed without error      00%      7351        -
 
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.


Usually when I transfer a large amount of data from the FreeNAS box to another system I can reach and sustain around 90 Mb/s in transfer speed. I've noticed that this has stopped and I'm only getting between 10 and 25 Mb/s now.

Is this a drive failure, or a SATA cable issue? If it is just a SATA Cable issue, should I be taking the drive out, formatting it and place it back in the zpool and re-sliver it? If its a drive issue, its under warranty still so I'll go pickup another and to replace it and send this one in for a warranty replacement, and toss that replacement into another pool that I'm about to build.
 

ser_rhaegar

Patron
Joined
Feb 2, 2014
Messages
358
UDMA_CRC_Error_Count is quite often a cable/connector issue. I would shut down and check all of your connections and possibly replace the cable for that particular drive.
 

sapper

Dabbler
Joined
Feb 18, 2013
Messages
21
Thanks Ser_rhaegar. It appears as though it was just a loose SATA cable that was causing the issues. I guess the last 6 months or so of being blown by the servers fans must have pushed it over just enough to cause the loose connection. After checking them and watching the reports, the errors have disappeared completely.
 
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