[nycbug-talk] Reproducible data corruption on 6.1-Stable [Long but please read]

George Georgalis george at galis.org
Thu Sep 14 09:42:06 EDT 2006

On Thu, Sep 14, 2006 at 09:17:53AM -0400, Jonathan Stewart wrote:
>George Georgalis wrote:
>> On Thu, Sep 14, 2006 at 08:20:47AM -0400, Jonathan Stewart wrote:
>>> Did you mean doing something like
>>> sudo dd if=/dev/ad4 of=/tmp/temp skip=268435455 count=1
>>> sudo dd if=/dev/ad4 of=/tmp/temp skip=268435456 count=1
>>> sudo dd if=/dev/ad4 of=/tmp/temp2 skip=268435456 count=1
>>> to make sure I can read the sectors and the reads come back the same
>>> each time?  If so then yes to both.
>> not sure about the base change
>> or your device names, but
>>  if=/dev/rwd0d skip=0xffffffe count=3
>> is what I had in mind, is ad4 a raw device?
>No errors, ad4 and ad6 are the 2 base drives used for the RAID stripe.
>They are on a highpoint rocketraid controller card.

Are we talking about the same blocks as if the drives where not in a raid?

>I didn't know dd would take hex, learn something new everyday :)

It was a nice surprise when I saw somebody do that too. :)

// George

George Georgalis, systems architect, administrator <IXOYE><

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