[Libvir] Remote & the problem with qemu deadlock
Richard W.M. Jones
rjones at redhat.com
Wed Apr 18 15:33:58 UTC 2007
Daniel Veillard wrote:
> Can we recognize that the connection is on localhost and just serve
> the request directly and synchronously instead ?
Yes you can. In real terms what this would mean is that all the
functions in qemu_internal.c are changed so that they become:
static int qemuDestroyDomain(virDomainPtr domain) {
qemud_packet_client req;
qemud_packet_server reply;
qemuPrivatePtr priv = (qemuPrivatePtr) domain->conn->privateData;
req.data.type = QEMUD_CLIENT_PKT_DOMAIN_DESTROY;
req.data.qemud_packet_client_data_u.domainDestroyRequest.id =
domain->id;
#if QEMU_INTERNAL_IS_REALLY_LINKED_TO_THE_SERVER
/* some code to get the fake server & client, and then: */
qemudDispatchDomainDestroy (server, client, req, rep);
/* followed by some code to decode the fake "reply packet" */
#else /* existing code: */
if (qemuProcessRequest(domain->conn, priv->qemud_fd, NULL, &req,
&reply) < 0) {
return -1;
}
return 0;
#endif
}
So it can be done but qemu_internal is sure going to look ugly afterwards.
Rich.
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