[smartmontools-support]Reallocationg Offline_Uncorrectable sectors

[Zoltan P. <zol...@gm...>]

Perhaps I misunderstood something, but I'm unable to reallocate
offline_uncorrectable sectors with the method described
in badblockhowto.

The disk currently is a member of a raid1 array. I have found the
"bad" blocks around the reported sector with the following command:

export i=139735500 && while [ $i -lt 139735600 ]; do echo $i; dd
if=/dev/hdb of=/dev/null bs=512 count=1 skip=$i; let i+=1; done

I have removed the partition (not the whole disk) from raid1
(raidsetfaulty && raidhotremove) and I have zeroed the sectors and
soon the whole partition (with sync!) but nothing had happened. I have
executed smartctl -t offline /dev/hdb when finished smartctl -t long
/dev/hdb but I still have errors when I executing the script that I
mentioned earlier:

139735510
1+0 records in
1+0 records out
139735511
dd: reading `/dev/hdb': Input/output error
0+0 records in
0+0 records out
139735512
dd: reading `/dev/hdb': Input/output error
0+0 records in
0+0 records out
[..]

Regards,
Zoltan

smartctl version 5.1-11 Copyright (C) 2002-3 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     SAMSUNG SP1614N
Serial Number:    XXXXXXXXXXXXXXXX
Firmware Version: TM100-24
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  ATA/ATAPI-7 T13 1532D revision 0
Local Time is:    Sun Jan  9 21:48:40 2005 CET

==> WARNING: Contact developers; may need -F enabled.


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:
Off-line data collection status: (0x04) Offline data collection activity was
                                        suspended by an interrupting
command from host.
                                        Auto Off-line Data Collection: Disabled.
Self-test execution status:      ( 112) The previous self-test completed having
                                        the read element of the test failed.
Total time to complete off-line
data collection:                 (5760) seconds.
Offline data collection
capabilities:                    (0x1b) SMART execute Offline immediate.
                                        Automatic timer ON/OFF support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        No Conveyance Self-test supported.
                                        No 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:        (  96) minutes.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE    
WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   051    Pre-fail     -       13
  3 Spin_Up_Time            0x0007   071   055   000    Pre-fail     -
      5120
  4 Start_Stop_Count        0x0032   100   100   000    Old_age      -       60
  5 Reallocated_Sector_Ct   0x0033   253   253   010    Pre-fail     -       0
  7 Seek_Error_Rate         0x000b   253   253   051    Pre-fail     -       0
  8 Seek_Time_Performance   0x0024   091   091   000    Old_age      -
      9155
  9 Power_On_Hours          0x0032   100   100   000    Old_age      -
      594852
 10 Spin_Retry_Count        0x0013   253   253   049    Pre-fail     -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age      -       58
194 Temperature_Celsius     0x0022   133   109   000    Old_age      -       35
195 Hardware_ECC_Recovered  0x000a   100   100   000    Old_age      -
      307575713
196 Reallocated_Event_Count 0x0012   099   099   000    Old_age      -       4
197 Current_Pending_Sector  0x0033   253   253   010    Pre-fail     -       0
198 Offline_Uncorrectable   0x0031   099   099   010    Pre-fail     -       4
199 UDMA_CRC_Error_Count    0x000b   100   100   051    Pre-fail     -       0
200 Multi_Zone_Error_Rate   0x000b   100   100   051    Pre-fail     -       0
201 Unknown_Attribute       0x000b   100   100   051    Pre-fail     -       3

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log, version number 1
Num  Test_Description    Status                  Remaining 
LifeTime(hours)  LBA_of_first_error
# 1  Extended off-line   Completed: read failure       00%      4926  
      0x0058db1f
# 2  Short off-line      Completed: read failure       00%      4903  
      0x085431e3
# 3  Extended off-line   Completed: read failure       00%      4903  
      0x0058db1f
# 4  Short off-line      Completed: read failure       00%      4903  
      0x085431e3
# 5  Short off-line      Completed: read failure       00%      4896  
      0x085431e3
# 6  Extended off-line   Completed: read failure       00%      4893  
      0x0058db1f
# 7  Short off-line      Completed: read failure       00%      4893  
      0x085431e3