Re: [Xen-devel]xl create PV guest with qcow/qcow2 disk images fail

[Roger Pau Monné <roger.pau@xxxxxxxxxxxxx>]

2011/11/4 Chunyan Liu <cyliu@xxxxxxxx>:
>> This needs to be libxl_fork, I think. Perhaps even this whole thing
>> should be libxl__spawn_spawn (not sure about that)?
>
> I noticed that in libxl, some places use fork() and other places use
> libxl_fork(), device-model uses libxl__spawn_spwan. As for this place, I am
> not clear if fork() + execvp() might cause some problem? Or it is just
> considered better to use libxl_fork or libxl__spawn_spwan?

If you are going to use fork to execute a file it might be best to use
vfork + libxl__exec instead. I have proposed the addition of a new
function in a patch to just do this (call vfork and libxl__exec),
which is also interesting for the execution of hotplug scripts.

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