Date: Thu, 16 Apr 2009 16:42:44 -0400 From: Damian Gerow <dgerow@afflictions.org> To: freebsd-current@freebsd.org Subject: Re: ZFS checksum errors on umass(4) insertion Message-ID: <20090416204244.GB1186@plebeian.afflictions.org> In-Reply-To: <200904161535.19220.jhb@freebsd.org> References: <49BD117B.2080706@163.com> <200904161327.46509.jhb@freebsd.org> <20090416182455.GA60341@wep4035.physik.uni-wuerzburg.de> <200904161535.19220.jhb@freebsd.org>
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John Baldwin wrote: : > > > Something in the FAT line, likely FAT32. I use ZFS for everything but my : > > > root filesystem (/usr, /var, /tmp, /home, and a few other non-default : > > > mountpoints), but I stick with FAT for removable devices. : > > > : > > > It's probably worth pointing out that I don't need to mount the filesystem : > > > to trigger the issue. : > > : > > Try http://www.FreeBSD.org/~jhb/patches/dma_sg.patch please. : > > : > You mean dma_pg.patch? ^^^^^^^^^^^^^ : : Yes, and it is now symlinked to dma_sg as well. :) I've been running with the patch for two and a half hours, and I'm seeing a steady increase in bounced buffers, with no further complaints of checksum errors. I can usually trigger the problem about two hours into load generation, so things are looking good so far.
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