Date: Sat, 22 Mar 2008 16:13:29 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: nox@jelal.kn-bremen.de (Juergen Lock) Cc: freebsd-emulation@freebsd.org Subject: Re: qemu coredumps on RELENG_7 Message-ID: <200803221513.m2MFDTXx058806@lurza.secnetix.de> In-Reply-To: <200803202015.m2KKFTBX080186@saturn.kn-bremen.de>
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Juergen Lock wrote:
> Oliver Fromme wrote:
> > D Hill <d.hill@yournetplus.com> wrote:
> > > Rick C. Petty wrote:
> > > > Oliver Fromme wrote:
> > > > > Kostik Belousov wrote:
> > > > > >
> > > > > > Definitely,
> > > > > > kldload aio
> > > > > > before running qemu.
> > > > >
> > > > > Thank you, that seems to solve the problem indeed.
> > > > > Is that documented somewhere? It's not in the manpage.
> > > > > I think it should be in the manpage ... would have
> > > > > saved me quite some time.
> > > >
> Actually it is also documented in the pkg-message of the port(s), but
> apparently nobody reads that...
How are you supposed to read it when you install a bunch
of ports in batch mode, i.e. unattended (for example,
over night or during lunch break)?
Therefore I think that pkg-message is _not_ the correct
place for critical ionformation like that.
> (OK I could patch a pointer to that
> into the manpage, do other ports do that?)
There are several ports that patch port-specific things
into the manpage. Prominent examples are gzip, jpeg,
bash, cdrtools and openssh-portable.
> Anyway, this was easier than I thought: (it didn't occur to me that
> modfind(2) also finds modules that are statically linked into the kernel...)
>
> Index: qemu/vl.c
> @@ -8423,6 +8423,12 @@
> nb_nics = 0;
> /* default mac address of the first network interface */
>
> +#ifdef __FreeBSD__
> + loadmodules(0, "aio", NULL);
> + if (modfind("aio") == -1)
> + fprintf(stderr, "warning: aio not (kld)loaded, may cause `Invalid system call' traps on disk IO\n");
> +#endif
I prefer it didn't try to load the module itself. That's
a decision I want to make myself. But the message is
perfectly fine. It would have saved me quite some time.
Thanks!
Best regards
Oliver
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