Re: Flaky bus, enclosure, or drive?

--- "Joshua J. Kugler" <joshua@eeinternet.com> wrote:

> I have a USB enclosure and drive on which I'm getting occasional data errors.
>
> I let badblocks (write test) run on it for a few days, and logged the output.
>
> After a dozen or so passes, I have a file full of block numbers, but there
> are no two the same.
>
> This is kernel 2.6.15, so I *think* the usb drivers are stabilized by now.
> Should I be looking at the enclosure, the motherboard, or the drive for the
> flakiness? I see "reset" messages every now and then while badblocks is
> running. Is this a hardware (where?) or software issue?
>
> (No, I haven't thrown the drive itself inside an actual computer case yet.)
>
> Thanks!
>
> j
>
> --
> Joshua Kugler

Joshua,

Something similar seems to have come up in the recent past. -
I suspect that there are chipset bugs or something else
non-OS related going awry with large USB transfers.

I my experience, my drive (USB) got corrupted under linux
which then tested good on direct IDE connection. As an experiment,
I started using it on a windoze box, doing the same large backup
scheme and it ulimately became corrupted similarly. ( This suggests
it may not be os/driver related? )

I have since abandoned USB as a backup interface, installed the
drive in a box as a main (IDE) drive & it has been performing
flawlessly since.

I think the best test is to connect it via PATA/SATA & run
your tests. Let us know!

Cheers!

mike

       
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Received on Fri Sep 7 10:09:10 2007