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Date: Tue, 18 Jul 2006 07:34:46 -0700 (PDT)
From: "R. B. Riddick" <arne_woerner@yahoo.com>
To: Eric Anderson <anderson@centtech.com>
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Cc: freebsd-geom@freebsd.org
Subject: Re: geom_stripe error
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--- Eric Anderson <anderson@centtech.com> wrote:
> > 157622337536/131072 appr. 1202563
> > 1202563 is congruent with 3 (modulo 32).
> > 158778490880/131072 appr. 1211383
> > 1211383 % 32 = 23
> 
> So the offset is the number of records (16K based on stripe size in this 
> case) offset, and not bytes?  I was thinking bytes, which would make it 
> drive number 5:
> 
Hmm...

I think the offsets in the log messages are in _bytes_. The stripe size is 128k
_bytes_. So the 157622337536-th byte is in the 1202563-rd stripe from the point
of view of the geom_stripe and the [1202563/32]-th stripe on the underlying
disk and the disk# should be [1202563%32].

I dont see why/where ur 16k come into the computation...

-Arne


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