A tool for remapping bad sectors in CURRENT?
mav at FreeBSD.org
Mon Mar 8 10:31:31 UTC 2010
Eugeny N Dzhurinsky wrote:
> Recently I've started to see the following logs in messages:
> Mar 8 12:00:24 localhost smartd: Device: /dev/ad4, 2 Currently unreadable (pending) sectors
> Mar 8 12:00:24 localhost smartd: Device: /dev/ad4, 2 Offline uncorrectable sectors
> smartctl did really show that something is wrong with my HDD, but still no
> remaps - just read errors.
> SMART Self-test log structure revision number 1
> Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
> # 1 Extended offline Completed: read failure 60% 1198 222342559
> # 2 Extended offline Completed: read failure 60% 1187 222342557
> # 3 Extended offline Completed: read failure 60% 1180 222342559
> # 4 Short offline Completed without error 00% 1178 -
> # 5 Extended offline Aborted by host 90% 1178 -
> ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
> Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
> Now can I find out which file owns the LBAs 222342557 and 222342559 ? How do I
> force remapping of these sectors? I assume that I have to write something
> directly to the sectors?
You may try to overwrite these sectors with dd. It should trigger sector
reallocation. To be sure, you may read them before and after the write.
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