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From: Markus Armbruster <armbru@redhat.com>
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Date: Thu, 26 Jan 2012 11:55:42 +0100
In-Reply-To: <4F211FE7.409@redhat.com> (Paolo Bonzini's message of "Thu, 26
	Jan 2012 10:41:59 +0100")
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Subject: Re: [Qemu-devel] [libvirt]  libvirt doesn't work with qemu 1.0
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Libvirt <libvir-list@redhat.com>, Eric Blake <eblake@redhat.com>, qemu-devel <qemu-devel@nongnu.org>

Paolo Bonzini <pbonzini@redhat.com> writes:

> On 01/26/2012 04:55 AM, Eric Blake wrote:
>>
>> $ /usr/libexec/qemu-kvm -qmp stdio -S -display none
>> qemu-kvm: -display: invalid option
>> $ /usr/libexec/qemu-kvm -qmp stdio -S -nographic
>> chardev: opening backend "stdio" failed
>> qemu: could not open serial device 'stdio': Argument list too long

The "argument list too long" is of course random crap found errno.  The
real cause is trying to create multiple stdio character devices.  The
other one is the -serial stdio you get by default with -nographic and no
default monitor (-qmp suppresses that one).
 
Character device creation error reporting is generally atrocious.  I'm
working on it.

> Have you tried -nodefaults?

That suppresses the default -serial, so it should work.  I always use
it, because our defaults are a labyrinth I can do without.