Re: ZFS checksum errors on umass(4) insertion

From: Alexey Shuvaev <shuvaev_at_physik.uni-wuerzburg.de>
Date: Thu, 16 Apr 2009 20:24:55 +0200
On Thu, Apr 16, 2009 at 01:27:46PM -0400, John Baldwin wrote:
> On Thursday 16 April 2009 12:18:51 pm Damian Gerow wrote:
> > John Baldwin wrote:
> > : > I'm at a bit of a loss as to what to test next, other than checking for 
> an
> > : > increased number of checksum errors after unloading umass.  However, I'm 
> not
> > : > convinced this is going to highlight the actual problem.  I'm all ears 
> as to
> > : > what to test for at this point, as I'm running out of ideas.
> > : > 
> > : > A little less wordy: help?
> > : 
> > : Do your umass(4) drives use ZFS or some other filesystem?
> > 
> > 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?			^^^^^^^^^^^^^

Alexey.
Received on Thu Apr 16 2009 - 16:24:58 UTC

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