Re: LibPATA code issues / 2.6.16 (previously, 2.6.15.x)

[Jeff Garzik]

Justin Piszcz wrote:
> Yet a new problem, under 2.6.16, when I fill up the disk, smartmontools 
> reports this:
>
> Apr 21 14:24:20 p34 smartd[1443]: Device: /dev/sdc, 1 Currently unreadable
> (pending) sectors
> Apr 21 14:54:20 p34 smartd[1443]: Device: /dev/sdc, 1 Currently unreadable
> (pending) sectors
> Apr 21 14:54:20 p34 smartd[1443]: Device: /dev/sdc, 1 Offline uncorrectable
> sectors
>
> What made it error under 2.6.16?
>
> $ time dd if=/dev/zero of=file.out
> dd: writing to `file.out': No space left on device
> 781118873+0 records in
> 781118872+0 records out
> 399932862464 bytes (400 GB) copied, 8873.06 seconds, 45.1 MB/s
>
> real    147m53.092s
> user    8m1.395s
> sys     42m4.500s
>
> $
>
> Under 2.6.15.x, I did not see this behavior, is this going bad, or?

That's a disk-level problem.  You've got bad sectors.

You can force the disk to replace the bad sectors by doing a disk-level 
write:

	dd if=/dev/zero of=/dev/sda1 bs=4k

and then test the disk with

	smartctl -d ata -t long /dev/sda

If sectors continue to die, the disk is toast.

	Jeff



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