Skip to main content

hard drive - Reliability of S.M.A.R.T. Selftest

I let smartd check my hard drives regularly. Recently I have been notified about a failed short selftest on one of my hard-drivers. 



 smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.16.0-0.bpo.4-amd64] (local build)
    Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org


    === START OF INFORMATION SECTION ===
    Model Family:     Western Digital RE4
    Device Model:     WDC WD1003FBYX-01Y7B0
    Serial Number:    WD-WCAW31677053
    LU WWN Device Id: 5 0014ee 25b0c013e
    Firmware Version: 01.01V01
    User Capacity:    1.000.204.886.016 bytes [1,00 TB]
    Sector Size:      512 bytes logical/physical
    Rotation Rate:    7200 rpm

    Device is:        In smartctl database [for details use: -P show]
    ATA Version is:   ATA8-ACS (minor revision not indicated)
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Mon Dec  7 13:13:22 2015 CET
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:  (0x85) Offline data collection activity
                                        was aborted 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:                (16680) 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:        ( 172) 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       -       1
  3 Spin_Up_Time            0x0027   176   173   021    Pre-fail  Always       -       4191
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       37

  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   070   070   000    Old_age   Always       -       21991
     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       -       37
    192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       35
    193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1
    194 Temperature_Celsius     0x0022   110   088   000    Old_age   Always       -       37

    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       -       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  Short offline       Completed without error       00%     21981         -
    # 2  Extended offline    Completed without error       00%     21972         -
    # 3  Short offline       Completed without error       00%     21963         -
    # 4  Extended offline    Completed: read failure       90%     21934         4631341
    # 5  Short offline       Completed: read failure       50%     21933         4631341
    # 6  Short offline       Completed without error       00%     21909         -
    # 7  Short offline       Completed without error       00%     21885         -
    # 8  Short offline       Completed without error       00%     21861         -
    # 9  Short offline       Completed without error       00%     21837         -

    #10  Short offline       Completed without error       00%     21813         -
    #11  Short offline       Completed without error       00%     21789         -
    #12  Extended offline    Completed without error       00%     21769         -
    #13  Short offline       Completed without error       00%     21765         -
    #14  Short offline       Completed without error       00%     21742         -
    #15  Short offline       Completed without error       00%     21718         -
    #16  Short offline       Completed without error       00%     21694         -
    #17  Short offline       Completed without error       00%     21670         -
    #18  Short offline       Completed without error       00%     21646         -
    #19  Short offline       Completed without error       00%     21622         -

    #20  Extended offline    Completed without error       00%     21602         -
    #21  Short offline       Completed without error       00%     21598         -
    2 of 2 failed self-tests are outdated by newer successful extended offline self-test # 2

    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.


I then started an extended offline self-test and it also aborted because of a read failure on the same LBA. I then removed the disk from mdadm-raid and started a destructive test with badblocks - it passed three times and surprisingly no errors were found. After another self-test the log error count decreased to 0.



Is my drive cheating on me? (It's a Western Digital RE4.) It reports no Current_Pending_Sector, Offline_Uncorrectable or Reallocated_Event_Count. It reports 1 at Raw_Read_Error_Rate and it reported 1 for Multi_Zone_Error_Rate but this is back at 0 now.




I will replace the drive, but I am not sure if I should overthink my assumption that an extended offline self-test is reliable.

Comments

Post a Comment

Popular posts from this blog

linux - iDRAC6 Virtual Media native library cannot be loaded

When attempting to mount Virtual Media on a iDRAC6 IP KVM session I get the following error: I'm using Ubuntu 9.04 and: $ javaws -version Java(TM) Web Start 1.6.0_16 $ uname -a Linux aud22419-linux 2.6.28-15-generic #51-Ubuntu SMP Mon Aug 31 13:39:06 UTC 2009 x86_64 GNU/Linux $ firefox -version Mozilla Firefox 3.0.14, Copyright (c) 1998 - 2009 mozilla.org On Windows + IE it (unsurprisingly) works. I've just gotten off the phone with the Dell tech support and I was told it is known to work on Linux + Firefox, albeit Ubuntu is not supported (by Dell, that is). Has anyone out there managed to mount virtual media in the same scenario?
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits,
Post a Comment
Read more

apache 2.2 - Server Potentially Compromised -- c99madshell

So, low and behold, a legacy site we've been hosting for a client had a version of FCKEditor that allowed someone to upload the dreaded c99madshell exploit onto our web host. I'm not a big security buff -- frankly I'm just a dev currently responsible for S/A duties due to a loss of personnel. Accordingly, I'd love any help you server-faulters could provide in assessing the damage from the exploit. To give you a bit of information: The file was uploaded into a directory within the webroot, "/_img/fck_uploads/File/". The Apache user and group are restricted such that they can't log in and don't have permissions outside of the directory from which we serve sites. All the files had 770 permissions (user rwx, group rwx, other none) -- something I wanted to fix but was told to hold off on as it wasn't "high priority" (hopefully this changes that). So it seems the hackers could've easily executed the script. Now I wasn't able
Post a Comment
Read more