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Re: Hurd shutdown problems

From: Justus Winter
Subject: Re: Hurd shutdown problems
Date: Sat, 06 Aug 2016 19:59:08 +0200
User-agent: Notmuch/0.22+51~gcc1a6d2 (https://notmuchmail.org) Emacs/24.5.1 (x86_64-pc-linux-gnu)

Hi :)

"Brent W. Baccala" <cosine@freesoft.org> writes:

> Aloha!
> Well, I think that I've resolved my boot hangs by removing the
> -no-kvm-irqchip flag, now I'm trying to resolve the occasional hang when
> the system shuts down.  The filesystem always gets corrupted if the system
> can't cleanly halt, so it's a real problem.

I do see the occasional hang when shutting down Debian/Hurd, but not at
the points you described.

To prevent filesystem damage, try the following.  Break into the kernel
debugger, and kill the auth server using:


Then continue using "c", and /hurd/startup should cleanly shutdown the

> Any idea what's causing this?  Any advice on how to debug it further?

Ideas yes, but none that is readily available.  1/ improve our subhurd
support and reproduce the shutdown problems in a subhurd, then debug
From the other hurd system.  2/ prevent sysvinit from killing your shell
by marking it as important using proc_mark_important, then investigate
using this shell.  Not sure if that would by itself interfere with the
shutdown, but it would probably work.


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