[libvirt] [PATCH 1/2] libxl: don't attempt to probe a non-existent emulator

[Ján Tomko]

On Thu, May 12, 2016 at 02:40:28PM -0600, Jim Fehlig wrote:
> When probing the <emulator> with '-help' to determine if
> it is the old qemu, errors are reported if the emulator
> doesn't exist
> 
> libvirt:  error : internal error: Child process
> (/usr/lib/xen/bin/qemu-dm -help) unexpected exit status 127:
> libvirt:  error : cannot execute binary /usr/lib/xen/bin/qemu-dm:
> No such file or directory
> 
> Avoid the probe if the specified emulator doesn't exist,
> squelching the error. There is no behavior change since
> libxlDomainGetEmulatorType() would return
> LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN if the probe failed
> via virCommandRun().
> 
> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
> ---
>  src/libxl/libxl_conf.c | 3 +++
>  1 file changed, 3 insertions(+)
> 

ACK. If we don't treat it as an error, we should not report it as one.

Jan