Re: Random hangs on 5.0 on R5000 Challenge S

[christos%astron.com@localhost (Christos Zoulas)]

In article <20090707165703.4880d5d4.fr30%dial.pipex.com@localhost>,
George Harvey  <fr30%dial.pipex.com@localhost> wrote:
>Hi,
>
>I have a R5000 Challenge S which has been running NetBSD 4.0 quite
>happily. Today I upgraded it to 5.0 and now I'm seeing random hangs.
>
>The first one happened during the upgrade process itself when
>postinstall hung while performing the cleanups after installing base and
>etc. Hitting ctrl-C broke out of postinstall and allowed the rest of the
>upgrade to continue. On rebooting from local disk, what I now see are
>hangs at various places while running the rc script. For example, I've
>seen it hang in fsck, mount, rm, sshd and getty. Sometimes I can use
>ctrl-C to abort the hung process and it will continue on for a few steps
>then hang somewhere else. Kernel boot messages are included below, if
>there is any other info I can provide that would help to find the
>problem, let me know.

Can you cause processes to hang? Can you ktrace them?

christos