Date: Tue, 18 Jul 2006 09:53:29 -0500 From: Eric Anderson <anderson@centtech.com> To: "R. B. Riddick" <arne_woerner@yahoo.com> Cc: freebsd-geom@freebsd.org Subject: Re: geom_stripe error Message-ID: <44BCF5E9.5070001@centtech.com> In-Reply-To: <20060718143446.22346.qmail@web30304.mail.mud.yahoo.com> References: <20060718143446.22346.qmail@web30304.mail.mud.yahoo.com>
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On 07/18/06 09:34, R. B. Riddick wrote: > --- 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... Oh - simple PEBKAC bug. :) Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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