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Re: [Qemu-devel] -serial stdio broken
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] -serial stdio broken |
Date: |
Thu, 7 Jan 2010 12:44:17 +0000 |
User-agent: |
Mutt/1.4.1i |
On Thu, Jan 07, 2010 at 06:34:13AM -0600, Anthony Liguori wrote:
> On 01/07/2010 05:55 AM, Richard W.M. Jones wrote:
> >On Sun, Dec 13, 2009 at 08:24:54AM +0000, Blue Swirl wrote:
> >
> >>I guess e1c09175bc00dd8dfb2ad1b26e1858dcdc109b59 or
> >>998bbd74b9d813b14a3a3b5009a5d5a48c7dce51 broke -serial stdio for all
> >>targets:
> >>qemu -serial stdio -monitor stdio
> >>chardev: opening backend "stdio" failed
> >>qemu: could not open serial device 'stdio': No such file or directory
> >>
> >-serial stdio on its own is broken for me (qemu from git). The error
> >is a little bit different, so I don't think this is the same bug:
> >
> > chardev: opening backend "stdio" failed
> > qemu: could not open serial device 'stdio': Invalid argument
> >
> >The full command line is:
> >
> >$qemudir/x86_64-softmmu/qemu-system-x86_64 \
> > -L $qemudir/pc-bios \
> > -drive file=/tmp/test.img,cache=off,if=ide \
> > -m 500 \
> > -no-reboot \
> > -nographic \
> > -serial stdio \
> >
>
> This is redundant. -nographic implies -serial stdio.
NB, QEMU 0.12 introduces a new flag '-nodefaults' that can be used to
get rid of this imlied 'serial stdio', and all other implied devices.
It is well worth using this new -nodefaults flag if you're managing
qemu from an app to avoid these surprises
eg this should work as you'd expect it
qemu -nodefaults -nographic -serial stdio
Regards,
Daniel
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