Date: Fri, 17 Aug 2007 22:10:06 GMT From: linimon@lonesome.com (Mark Linimon) To: freebsd-geom@FreeBSD.org Subject: Re: kern/115572: [gbde] gbde partitions fail at 28bit/48bit LBA addressing boundary Message-ID: <200708172210.l7HMA6QS059637@freefall.freebsd.org>
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The following reply was made to PR kern/115572; it has been noted by GNATS. From: linimon@lonesome.com (Mark Linimon) To: bug-followup@FreeBSD.org Cc: Subject: Re: kern/115572: [gbde] gbde partitions fail at 28bit/48bit LBA addressing boundary Date: Fri, 17 Aug 2007 17:07:23 -0500 ----- Forwarded message from Graham <gbradley@rocketmail.com> ----- Sorry, but my only solution at the moment is to use geli ! We should not guess at the cause, I know, but I am writing chunks in succession to a newly gbde initialised drive, checking access after each shot, with the intent of narrowing down to the specific write which causes the damage --- i.e. the next read and write at the 28/48 boundary fails. This may take a little time, but I'd like to find a small specific write block address which does the damage. It will then be easier (with a specific case) to work through the block address mapping which ghappens in gbde. Then maybe a fix....hope this strategy is ok. On an optimistic note --- if we can pin this down, it may help explain some of the other gbde corruption cases in the bug list. I will keep you posted as soon as I can find a small, specific case which causes the problem. regards Graham ----- End forwarded message -----
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