Disk I/O system hang on 5.4-RELEASE-p8 i386

[Greg Rivers]

On Thu, 23 Feb 2006, Michael R. Wayne wrote:

> Been fighting this for a while.  We have an older server, running
> 5.4-RELEASE-p8 i386 and used primarily for email, which hangs every
> couple of weeks.  The hang seems to be in the disk I/O system; pings
> succeed, and I can continue get a login: prompt on the console until
> I enter a login at which the response stops.
> [snip]

I think you're seeing the UFS deadlock I reported last November for 
RELENG_6.  See the thread beginning at 
http://lists.freebsd.org/pipermail/freebsd-stable/2005-November/019979.html

I believe this issue has made it onto the show-stopper list for 
6.1-RELEASE and is being actively worked on.

-- 
Greg