Re: ZFS checksum errors on umass(4) insertion

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.

-- 
John Baldwin