Changes between Version 6 and Version 7 of BadBlockHowto


Ignore:
Timestamp:
03/25/2017 01:28:05 PM (3 years ago)
Author:
Gabriele Pohl
Comment:

Repairs at the disk level

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  • BadBlockHowto

    v6 v7  
    384384[Step 0] The SMART selftest/error log (see `smartctl -l selftest`) indicated there was a problem with block address (i.e. the 512 byte sector at) `58656333`. The partition table (e.g. see `sfdisk -luS /dev/hda` or `fdisk -ul /dev/hda`) indicated that this block was in the `/dev/hda3` partition which contained a `ReiserFS` file system. That partition started at block address `54781650`.
    385385
    386 While doing the initial analysis it may also be useful to take a copy of the disk attributes returned by `smartctl -A /dev/hda`. Specifically the values associated with the `Reallocated_Sector_Ct` and `Reallocated_Event_Count` attributes (for ATA disks, the grown list (`GLIST`) length for `SCSI` disks). If these are incremented at the end of the procedure it indicates that the disk has re-allocated one or more sectors.
     386While doing the initial analysis it may also be useful to take a copy of the disk attributes returned by `smartctl -A /dev/hda`. Specifically the values associated with the `Reallocated_Sector_Ct` and `Reallocated_Event_Count` attributes (for `ATA` disks, the grown list (`GLIST`) length for `SCSI` disks). If these are incremented at the end of the procedure it indicates that the disk has re-allocated one or more sectors.
    387387
    388388[Step 1] Get the file system's block size:
     
    457457[Step 8] Proceed as stated earlier. For example, sync disk and run a long selftest that should succeed now.
    458458
     459== Repairs at the disk level ==
     460
     461This section first looks at a damaged partition table. Then it ignores the upper level impact of a bad block and just repairs the underlying sector so that defective sector will not cause problems in the future.
     462
     463
    459464== Footnotes ==
    460465