A tool for remapping bad sectors in CURRENT?

Eugeny N Dzhurinsky bofh at redwerk.com
Mon Mar 8 10:27:00 UTC 2010


Hello, all!

Recently I've started to see the following logs in messages:

Mar  8 12:00:24 localhost smartd[795]: Device: /dev/ad4, 2 Currently unreadable (pending) sectors
Mar  8 12:00:24 localhost smartd[795]: 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         -

and

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?

Thank you all in advance!

-- 
Eugene N Dzhurinsky
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