Changes between Version 4 and Version 5 of Howto_ReadSmartctlReports_ATA_542.1


Ignore:
Timestamp:
Sep 2, 2012, 3:00:41 AM (7 years ago)
Author:
Gabriele Pohl
Comment:

LBA

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  • Howto_ReadSmartctlReports_ATA_542.1

    v4 v5  
    104104  ER ST SC SN CL CH DH
    105105  -- -- -- -- -- -- --
    106   40 51 52 9b d9 3f 05  Error: <b><a href="#UNC" title="UNC (UNCorrectable): data is uncorrectable. This refers to data which has been read from the disk, but for which the Error Checking and Correction (ECC) codes are inconsistent. In effect, this means that the data can not be read."><font color="red">UNC<font></a></b> at LBA = 0x053fd99b = 88070555
     106  40 51 52 9b d9 3f 05  Error: <b><a href="#UNC" title="UNC (UNCorrectable): data is uncorrectable. This refers to data which has been read from the disk, but for which the Error Checking and Correction (ECC) codes are inconsistent. In effect, this means that the data can not be read."><font color="red">UNC<font></a></b> at <b><a href="#LBA" title="LLogical Block Address (LBA) at which the error occurred printed in base 16 and base 10."><font color="blue">LBA</font></a></b>) = 0x053fd99b = 88070555
    107107
    108108  Commands leading to the command that caused the error were:
     
    227227<a name="UNC"></a><h4>UNCorrectable Error in Data</h4>
    228228This refers to data which has been read from the disk, but for which the Error Checking and Correction (ECC) codes are inconsistent. In effect, this means that the data can not be read.
    229 In the error log the Logical Block Address (<b><a href="#LBA" title="Logical Block Address"><font color="blue">LBA</font></a></b>) at which the error occurred will be printed in base 10 and base 16.
     229In the error log the Logical Block Address (<b><a href="#LBA" title="Logical Block Address"><font color="blue">LBA</font></a></b>) at which the error occurred will be printed in base 16 and base 10.
    230230<a name="LBA"></a><h4>Logical Block Address</h4>
    231231The LBA is a linear address, which counts 512-byte sectors on the disk, starting from zero. (Because of the limitations of the SMART error log, if the LBA is greater than 0xfffffff, then either no error log entry will be made, or the error log entry will have an incorrect LBA. This may happen for drives with a capacity greater than 128 GiB or 137 GB.) For Linux systems the smartmontools web page has <a href="http://smartmontools.sourceforge.net/badblockhowto.html" title="Bad block HOWTO">instructions</a> about how to convert the LBA address to the name of the disk file containing the erroneous disk sector.