Disk errors

[Leonardo M. Ramé]

Hi, since a couple or days ago I noted my home server was taking too long to boot. After issuing a dmesg I got this:

...

(ada0:ata2:0:0:0): READ_DMA. ACB: c8 00 27 db 5a 40 00 00 00 00 01 00
(ada0:ata2:0:0:0): CAM status: ATA Status Error
(ada0:ata2:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 84 (ICRC ABRT )
(ada0:ata2:0:0:0): RES: 51 84 27 db 5a 00 00 00 00 01 00
(ada0:ata2:0:0:0): Retrying command
(ada0:ata2:0:0:0): READ_DMA. ACB: c8 00 7f 4b 4f 40 00 00 00 00 11 00
(ada0:ata2:0:0:0): CAM status: ATA Status Error
(ada0:ata2:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 84 (ICRC ABRT )
(ada0:ata2:0:0:0): RES: 51 84 7f 4b 4f 00 00 00 00 11 00
(ada0:ata2:0:0:0): Retrying command

Then I performed a smart control on that drive:


sudo /usr/local/sbin/smartctl -t long /dev/ada0


Here's the output of sudo /usr/local/sbin/smartctl -a /dev/ada0:


--------------------------------------------------------------------------------------------------------------
smartctl 6.1 2013-03-16 r3800 [FreeBSD 9.1-RELEASE amd64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green
Device Model:     WDC WD7500AADS-00L5B1
Serial Number:    WD-WCAU4A883181
LU WWN Device Id: 5 0014ee 101cce510
Firmware Version: 01.01A01
User Capacity:    750,156,374,016 bytes [750 GB]
Sector Size:      512 bytes logical/physical
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS (minor revision not indicated)
SATA Version is:  SATA 2.5, 3.0 Gb/s
Local Time is:    Wed May  7 07:05:07 2014 ART
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:  (0x84)    Offline data collection activity
                    was suspended by an interrupting command from host.
                    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:         (19500) 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:      ( 225) minutes.
Conveyance self-test routine
recommended polling time:      (   5) minutes.
SCT capabilities:            (0x303f)    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   193   156   021    Pre-fail  Always       -       5333
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       983
  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   076   076   000    Old_age   Always       -       17593
 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       -       981
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       43
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       983
194 Temperature_Celsius     0x0022   105   092   000    Old_age   Always       -       45
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       -       4455
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%     17584         -
# 2  Short offline       Completed without error       00%     17580         -

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.
--------------------------------------------------------------------------------------------------------------

Aparently the disk has no errors, what can be causing the errors shown in dmesg?.

I'm using this: FreeBSD server.rame.local 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec  4 09:23:10 UTC 2012     ro...@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

 
Leonardo M. Ramé
http://leonardorame.blogspot.com
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[Leonardo M. Ramé]

--

[Lokadamus]

Too long time to response?
http://forums.freenas.org/index.php?threads/cam-errors-icrc-abrt-drd-serv-err.17369/

https://www.google.de/search?q=ATA+status%3A+51+(DRDY+SERV+ERR)%2C+error%3A+84+(ICRC+ABRT+)


Greetings

[Leonardo M. Ramé]

________________________________

> From: Lokadamus <loka...@gmx.de>
>To: Leonardo M. Ramé <marti...@yahoo.com>
>Cc: Leonardo M. Ramé via freebsd-questions <freebsd-...@freebsd.org>
>Sent: Friday, May 9, 2014 12:18 PM
>Subject: Re: Disk errors
>
>
>Too long time to response?
>http://forums.freenas.org/index.php?threads/cam-errors-icrc-abrt-drd-serv-err.17369/
>
>https://www.google.de/search?q=ATA+status%3A+51+(DRDY+SERV+ERR)%2C+error%3A+84+(ICRC+ABRT+)
>
>
>Greetings
>

Thanks, I've read that post, and tried with a different sata cable, but I got the same results.

[Adam Vande More]

On Wed, May 7, 2014 at 5:48 AM, Leonardo M. Ramé <
freebsd-...@freebsd.org> wrote:
>
> Aparently the disk has no errors, what can be causing the errors shown in
> dmesg?.
>
> I'm using this: FreeBSD server.rame.local 9.1-RELEASE FreeBSD 9.1-RELEASE
> #0 r243825: Tue Dec 4 09:23:10 UTC 2012 ro...@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
> amd64

SMART is only able to predict a relatively small percentage of disk
failures. You have not ruled out a bad disk, but the more likely culprits
at this point are the controller/port and the driver. Since the driver is
pretty well established even in 9.1 there isn't great cause to suspect
that. You could try to upgrade the system to the newest release you are
comfortable with. Otherwise plug that disk/cable into a different
controller.

--
Adam

[Dave]

On Wednesday 07 May 2014 03:48:32 Leonardo M.

Ramé via freebsd-questions wrote:
> 199 UDMA_CRC_Error_Count 0x0032 200 200
000 Old_age
> Always - 4455

CRC error counts usually indicate bad SATA cables IME.

It could be the drive or the system board, but that's far
less likely in my experience than a bad data cable.