Date: Thu, 16 Apr 2009 23:25:43 -0500 From: Richard Todd <rmtodd@ichotolot.servalan.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ZFS checksum errors on umass(4) insertion Message-ID: <x77i1jucs8.fsf@ichotolot.servalan.com> In-Reply-To: <servalan.mailinglist.fbsd-current/200904161624.51920.jhb@freebsd.org> (John Baldwin's message of "Thu, 16 Apr 2009 16:24:51 -0400") References: <49BD117B.2080706@163.com> <20090416144251.GA1605@plebeian.afflictions.org> <x7myagjvi7.fsf@ichotolot.servalan.com> <200904161624.51920.jhb@freebsd.org>
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John Baldwin <jhb@freebsd.org> writes: > Can you please try http://www.FreeBSD.org/~jhb/patches/dma_pg.patch? This > lines up with your analysis in that it fixes a problem in the bounce buffer > code that was introduced with the new USB stack (and only triggers when the > USB code has to use a bounce buffer). I'll try to get this tested this weekend. (Although, in my experience, the bug is fairly intermittent, so it may take a while to show up if this bug doesn't fix it. On the other hand, I don't usually do large-scale data transfers to USB/umass devices like the other guy does, so that might be a good thing for me to try to test this. Hmmm.) Richard
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