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Very bad disk....

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I keep this disk around and put it in the system when doing testing with SMART.  It is not quite dead... but it returns lots of smart errors --- which makes it handy for testing disk-utility code.

 

When you try to read the partition table, it sounds like a washing machine full of rocks.

 

So hear is a SMART report you hope you never see on a drive in a production system:

 

# smartctl -a /dev/hdb
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     A
Serial Number:    !F00S02
Firmware Version: [No Information Found]
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   6
ATA Standard is:  ATA/ATAPI-6 T13 1410D revision 2
Local Time is:    Wed Aug 18 14:34:53 2010 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

Warning! SMART Attribute Data Structure error: invalid SMART checksum.
Warning! SMART Attribute Thresholds Structure error: invalid SMART checksum.
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
See vendor-specific Attribute list for marginal Attributes.

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:      (  97) The previous self-test completed having
                                       the servo (and/or seek) element of the
                                       test failed.
Total time to complete Offline
data collection:                 ( 430) seconds.
Offline data collection
capabilities:                    (0x5b) SMART execute Offline immediate.
                                       Auto Offline data collection on/off support.
                                       Suspend Offline collection upon new
                                       command.
                                       Offline surface scan supported.
                                       Self-test supported.
                                       No 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.
                                       No General Purpose Logging support.
Short self-test routine
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        ( 147) minutes.
SCT capabilities:              (0x0001) 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     0x0001   055   002   006    Pre-fail  Offline  In_the_past 182879654
 3 Spin_Up_Time            0x0001   097   096   000    Pre-fail  Offline      -       0
 4 Start_Stop_Count        0x0020   092   004   020    Old_age   Offline  In_the_past 8625
 5 Reallocated_Sector_Ct   0x0031   093   005   032    Pre-fail  Offline  In_the_past 309
 7 Seek_Error_Rate         0x0001   085   004   000    Pre-fail  Offline      -       381623761
 7 Seek_Error_Rate         <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
 2 Throughput_Performance  <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
 1 Raw_Read_Error_Rate     0x0020   030   030   000    Old_age   Offline      -       61458
 1 Raw_Read_Error_Rate     <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
 9 Power_On_Hours          <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
10 Spin_Retry_Count        0x0011   100   100   097    Pre-fail  Offline      -       0
 4 Start_Stop_Count        0x0020   100   004   000    Old_age   Offline      -       609
 4 Start_Stop_Count        <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
 0 Unknown_Attribute       <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
130 Unknown_Attribute       0x0020   040   000   000    Old_age   Offline  In_the_past 4294967336
130 Unknown_Attribute       0x0000   054   014   000    Old_age   Offline      -       182881446
130 Unknown_Attribute       <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
195 Hardware_ECC_Recovered  <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
133 Unknown_Attribute       0x0000   099   098   000    Old_age   Offline      -       21
133 Unknown_Attribute       <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
197 Current_Pending_Sector  <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
198 Offline_Uncorrectable   0x0010   099   098   000    Old_age   Offline      -       21
198 Offline_Uncorrectable   <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
134 Unknown_Attribute       <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
130 Unknown_Attribute       0x0020   200   000   000    Old_age   Offline  In_the_past 192
130 Unknown_Attribute       <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
135 Unknown_Attribute       <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
200 Multi_Zone_Error_Rate   0x0000   100   221   000    Old_age   Offline      -       0
130 Unknown_Attribute       0x0020   097   186   000    Old_age   Offline      -       1
130 Unknown_Attribute       <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
202 TA_Increase_Count       <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA

Warning! SMART ATA Error Log Structure error: invalid SMART checksum.
SMART Error Log Version: 1
ATA Error Count: 1906 (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 1906 occurred at disk power-on lifetime: 61458 hours (2560 days + 18 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 41 08 00 00 00 80  Error: UNC at LBA = 0x00000000 = 0

 Commands leading to the command that caused the error were:
 CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
 -- -- -- -- -- -- -- --  ----------------  --------------------
 21 03 08 00 00 00 80 00      00:02:49.160  READ SECTOR(S) [OBS-5]
 21 03 20 00 00 00 80 00      00:02:38.019  READ SECTOR(S) [OBS-5]
 20 01 08 82 08 00 90 00      00:02:37.954  READ SECTOR(S)
 20 03 20 82 20 00 80 00      00:02:35.906  READ SECTOR(S)
 21 03 08 23 00 00 80 00      00:02:35.931  READ SECTOR(S) [OBS-5]

Error 1905 occurred at disk power-on lifetime: 50048 hours (2085 days + 8 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 41 01 80 00 00 80  Error: UNC at LBA = 0x00000080 = 128

 Commands leading to the command that caused the error were:
 CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
 -- -- -- -- -- -- -- --  ----------------  --------------------
 21 03 01 80 00 00 80 00      00:07:23.392  READ SECTOR(S) [OBS-5]
 21 03 00 63 00 00 80 00      00:07:23.604  READ SECTOR(S) [OBS-5]
 21 03 00 43 00 00 80 00      00:07:42.213  READ SECTOR(S) [OBS-5]
 21 03 01 43 00 00 80 00      00:07:42.196  READ SECTOR(S) [OBS-5]
 21 03 01 72 00 00 80 00      00:07:31.584  READ SECTOR(S) [OBS-5]

Error 1904 occurred at disk power-on lifetime: 61457 hours (2560 days + 17 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 50 00 81 00 00 e0   at LBA = 0x00000081 = 129

 Commands leading to the command that caused the error were:
 CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
 -- -- -- -- -- -- -- --  ----------------  --------------------
 20 03 08 82 08 00 e0 00      00:07:39.008  READ SECTOR(S)
 20 03 08 02 0a 00 e0 00      00:07:40.040  READ SECTOR(S)
 20 03 80 82 5d 00 e0 00      00:07:42.085  READ SECTOR(S)
 24 03 08 82 80 c2 e0 00      00:07:42.196  READ SECTOR(S) EXT
 21 03 01 86 00 00 80 00      00:07:36.204  READ SECTOR(S) [OBS-5]

Error 1903 occurred at disk power-on lifetime: 61457 hours (2560 days + 17 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 50 00 81 00 00 e0   at LBA = 0x00000081 = 129

 Commands leading to the command that caused the error were:
 CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
 -- -- -- -- -- -- -- --  ----------------  --------------------
 20 03 80 82 04 00 e0 00      00:07:40.033  READ SECTOR(S)
 20 03 08 82 80 c2 60 00      00:07:40.040  READ SECTOR(S)
 21 03 01 86 00 00 80 00      00:07:42.085  READ SECTOR(S) [OBS-5]
 21 03 01 85 00 00 80 00      00:07:42.196  READ SECTOR(S) [OBS-5]
 21 03 01 84 00 00 80 00      00:07:32.100  READ SECTOR(S) [OBS-5]

Error 1902 occurred at disk power-on lifetime: 57361 hours (2390 days + 1 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 41 01 82 00 00 80  Error: UNC at LBA = 0x00000082 = 130

 Commands leading to the command that caused the error were:
 CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
 -- -- -- -- -- -- -- --  ----------------  --------------------
 21 03 01 82 00 00 80 00      00:07:46.185  READ SECTOR(S) [OBS-5]
 21 01 01 82 00 00 80 00      00:07:40.040  READ SECTOR(S) [OBS-5]
 01 01 01 81 00 00 80 00      00:07:40.037  [RESERVED]
 21 03 01 80 00 00 80 00      00:07:42.100  READ SECTOR(S) [OBS-5]
 21 03 01 63 00 00 80 00      00:07:36.204  READ SECTOR(S) [OBS-5]

Warning! SMART Self-Test Log Structure error: invalid SMART checksum.
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Offline             Completed: servo/seek failure 10%     54556         534055320
# 2  Offline             Completed: servo/seek failure 10%     53379         533790872
# 3  Offline             Completed: servo/seek failure 10%     37251         533742608
# 4  Short offline       Completed: servo/seek failure 10%     37432         530736405
# 5  Short offline       Completed: servo/seek failure 10%     37432         530580757
# 6  Extended offline    Completed: servo/seek failure 10%     37432         530588949
# 7  Extended offline    Completed: unknown failure    10%     36869         530580756
# 8  Short offline       Completed without error       00%     12421         -

Warning! SMART Selective Self-Test Log Structure error: invalid SMART checksum.
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.

Yes, but look, it is perfectly fine ;) ;) even with the rocks.

SMART overall-health self-assessment test result: PASSED
  • Author

Which tells you just how useful that "self-assessment" is.

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