[Libvir] virDomainDestroy not synchronous?

Lon Hohberger lhh at redhat.com
Tue Sep 26 22:07:06 UTC 2006




        domain_desc = virDomainGetXMLDesc(vdp, 0);
        response = virDomainDestroy(vdp);
        if (response == 0 && domain_desc) {
		/* sleep(3); */
                virDomainCreateLinux(vp, domain_desc, 0);

If I add the 'sleep()', the domain dies and virDomainCreateLinux() fails
with the following error:

  libvir: Xen Daemon error : POST operation failed: No such domain
  Failed to get devices for domain futon1

That really doesn't bother me, and it's likely my fault anyway (it's not
a fully configured domain; it's a dom-U sitting in the anaconda install
screen).  Of course, it's moot if we get a guaranteed synchronous reboot
flag for virDomainReboot()... hint hint ;)

What bothers me is that if I *don't* put the sleep in, the domain never
actually gets destroyed.  In this particular case, the domain is still
sitting at the anaconda install screen; all I have to do is reconnect
using xm console.

If I only do a virDomainDestroy(), the domain gets destroyed.  So, it
looks like like the virDomainCreateLinux() cancels the destroy request
before it can be completed.

This makes it look like that the destroy request is not synchronous,
and/or the result of the operation is not guaranteed (only that the
request was made).  Is it supposed to work this way, or is this a

-- Lon

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