Re: [Xen-devel] [problem in `xl_cmdimpl.c`] Why pid return by fork() in parent process is not the same with pid returned by getpid()?

[éç <aware.why@xxxxxxxxx>]

On Thu, Aug 2, 2012 at 5:55 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:

On Thu, 2012-08-02 at 10:47 +0100, éç wrote:

> Â Â In xen-4.1.2/tools/libxl/xl_cmdimpl.c : create_domain(), it starts

If you are doing development then target xen-unstable would be
preferable, especially if you are looking at (lib)xl. The xl stuff in
4.1 is effectively a preview and it has change substantially internally
since 4.1.

> After input `xl create xp-101.hvm`, you got `Daemon running with PID
> 26622` following the command line in the screen; but the xl log file
> lies in /var/log/xen/xl-xp-101.log contains a line `Waiting for domain
> xp-101 (domid 1) to die [pid 26624]`.
> Why 26622 != 26624? ÂAnd 26622 could not be found by `ps -ef` command.
> What happended to that?!

There's a call to dameon in there, which will involve a double fork
IIRC.

Ian.

I only to see `libxl_fork` in function create_domain() who invokes fork() once, where is the second fork()?
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