geom_stripe error

[Eric Anderson]

On 07/18/06 09:34, R. B. Riddick wrote:
> --- Eric Anderson <anderson at 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...

Oh - simple PEBKAC bug.  :)

Eric



-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
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