[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>]

Hi all,

    In xen-4.1.2/tools/libxl/xl_cmdimpl.c : create_domain(), it starts up a child daemon process waiting for the domain death,  

there are several lines echo the child pid as follows:

1592        if (child1) {                                  /*it's in the parent*/                                                                                                                                                                                 

1593            printf("Daemon running with PID %d\n", child1); 

/**it's in the child/

1643    LOG("Waiting for domain %s (domid %d) to die [pid %ld]",                                                                                                                                                                            

1644        d_config.c_info.name, domid, (long)getpid());  

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?  And 26622 could not be found by `ps -ef` command.

What happended to that?!

Thanks in advance!

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