zfs i/o hangs on 9-PRERELEASE

[Jeremy Chadwick]

On Sat, Nov 26, 2011 at 04:47:35PM -0600, Mark Felder wrote:
> It appears that I'm mistaken about those messages then . However this does both happen on my AMD x6 and Intel Atom machines with different hard drives, controllers, etc. I feel it would be unlikely to be hardware. 
> 
> Unfortunately the procstat command is probably of no use because I can't interact with the console or ssh for the periods of time when it is hanging (sometimes in excess of a minute). Zpool scrubs come up clean and I never see any errors reported. I've been running this hardware for 2 years and v28 for quite some time. It doesn't seem like it started happening until I upgraded to a build past RC1. I don't know where to find RC1 media and I don't know the svn revision of RC1 so I haven't tried.

The kernel backtrace you provided indicates a problem in pf(4), not ZFS.
What piece am I missing?

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |