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SubjectRE: another hard disk broken or xfs problems?
Quote from Stephen Satchell <list@satchell.net>:
> /bin/nice -n 15 /bin/dd if=/dev/hda of=/dev/null bs=128k
> /bin/nice -n 15 /bin/dd if=/dev/hdc of=/dev/null bs=128k
> /bin/nice -n 15 /bin/dd if=/dev/sda of=/dev/null bs=128k
>
> This ensures that all sectors are readable, regardless of file system
> state, and relocates and reassigns those sectors that can be read in any
> way.

The majority of drives do not re-allocate on read, only on write.
Therefore, the above cron jobs will simply find them each time they
run, unless something writes to the defective block inbetween runs.

John.
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