Re: Detecting I/O error and Halting System : come back

["linux-os \(Dick Johnson\)" <linux-os@analogic.com>]

On Thu, 7 Dec 2006, zine el abidine Hamid wrote:

> Hi evrybody,
>
> I come back with my problem of "I/O error" (refer to
> the following link to reffresh your mind :
> http://groups.google.fr/group/linux.kernel/browse_thread/thread/386b69ca8389cda0/a58d753bf87c4f06?lnk=st&q=hamid+ZINE+EL+ABIDINE&rnum=2&hl=fr#a58d753bf87c4f06
> )

Please don't copy everybody in the universe when you have a problem. That said, 
it is likely that you have a bad spot on your hard disk. You can verify this
bu copying the RAW device to the null device and checking for errors. Assume 
that your hard disk device was /dev/hda (not /dev/hda1 or other partitions).
You would simply execute from the root account, cp `/dev/hda /dev/null`.
That will read every block on your hard disk. If that does not produce any 
errors, then the problem that you have is caused by file-system errors,
not device errors.

To fix file-system errors, you need to restart in single-user mode:
`init 1` should bring you to that mode, then you need to unmount the 
file-systems and execute fsck on each of them. If you are unable to unmount
the file systems, then you need to cold boot in single-user mode to do so.

If you have bad blocks then you need to execute `badblocks` with its output
to `fsck -l`. That will map the bad blocks away from the file-system.


Cheers,
Dick Johnson
Penguin : Linux version 2.6.16.24 on an i686 machine (5592.68 BogoMips).
New book: http://www.AbominableFirebug.com/
_


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