void libxl__remus_devices_setup(libxl__egc *egc, libxl__remus_devices_state *rds)
{
int i, rc;
STATE_AO_GC(rds->ao);
rc = init_device_subkind(rds);
if (rc)
goto out;
rds->num_devices = 0;
rds->num_nics = 0;
rds->num_disks = 0;
if (rds->device_kind_flags & (1 << LIBXL__DEVICE_KIND_VIF))
rds->nics = libxl_device_nic_list(CTX, rds->domid, &rds->num_nics);
if (rds->device_kind_flags & (1 << LIBXL__DEVICE_KIND_VBD))
rds->disks = libxl_device_disk_list(CTX, rds->domid, &rds->num_disks);
if (rds->num_nics == 0 && rds->num_disks == 0)
goto out;
GCNEW_ARRAY(rds->devs, rds->num_nics + rds->num_disks);
for (i = 0; i < rds->num_nics; i++) {
rds->devs[rds->num_devices++] = remus_device_init(egc, rds,
LIBXL__DEVICE_KIND_VIF,
&rds->nics[i]);
}
for (i = 0; i < rds->num_disks; i++) {
rds->devs[rds->num_devices++] = remus_device_init(egc, rds,
LIBXL__DEVICE_KIND_VBD,
&rds->disks[i]);
}
remus_devices_setup(egc, rds);
return;
out:
rds->callback(egc, rds, rc);
}
void libxl__colo_save_setup(libxl__egc *egc, libxl__colo_save_state *css)
{
libxl__domain_save_state *dss = CONTAINER_OF(css, *dss, css);
/* Convenience aliases */
libxl__checkpoint_devices_state *const cds = &dss->cds;
libxl__srm_save_autogen_callbacks *const callbacks =
&dss->sws.shs.callbacks.save.a;
STATE_AO_GC(dss->ao);
if (dss->type != LIBXL_DOMAIN_TYPE_HVM) {
LOGD(ERROR, dss->domid, "COLO only supports hvm now");
goto out;
}
css->send_fd = dss->fd;
css->recv_fd = dss->recv_fd;
css->svm_running = false;
css->paused = true;
css->qdisk_setuped = false;
css->qdisk_used = false;
libxl__ev_child_init(&css->child);
css->cps.is_userspace_proxy =
libxl_defbool_val(dss->remus->userspace_colo_proxy);
if (dss->remus->netbufscript)
css->colo_proxy_script = libxl__strdup(gc, dss->remus->netbufscript);
else
css->colo_proxy_script = GCSPRINTF("%s/colo-proxy-setup",
libxl__xen_script_dir_path());
cds->ops = colo_ops;
cds->callback = colo_save_setup_done;
cds->ao = ao;
cds->domid = dss->domid;
cds->concrete_data = css;
/* If enable userspace proxy mode, we don't need VIF */
if (css->cps.is_userspace_proxy) {
cds->device_kind_flags = (1 << LIBXL__DEVICE_KIND_VBD);
/* Use this args we can connect to qemu colo-compare */
cds->nics = libxl__device_list(gc, &libxl__nic_devtype,
cds->domid, &cds->num_nics);
if (cds->num_nics > 0) {
css->cps.checkpoint_host = cds->nics[0].colo_checkpoint_host;
css->cps.checkpoint_port = cds->nics[0].colo_checkpoint_port;
}
} else {
cds->device_kind_flags = (1 << LIBXL__DEVICE_KIND_VIF) |
(1 << LIBXL__DEVICE_KIND_VBD);
}
css->srs.ao = ao;
css->srs.fd = css->recv_fd;
css->srs.back_channel = true;
libxl__stream_read_start(egc, &css->srs);
css->cps.ao = ao;
if (colo_proxy_setup(&css->cps)) {
LOGD(ERROR, cds->domid, "COLO: failed to setup colo proxy for guest");
goto out;
}
if (init_device_subkind(cds))
goto out;
callbacks->suspend = libxl__colo_save_domain_suspend_callback;
callbacks->checkpoint = libxl__colo_save_domain_checkpoint_callback;
callbacks->postcopy = libxl__colo_save_domain_resume_callback;
callbacks->wait_checkpoint = libxl__colo_save_domain_wait_checkpoint_callback;
libxl__checkpoint_devices_setup(egc, &dss->cds);
return;
out:
dss->callback(egc, dss, ERROR_FAIL);
}
