#include "surf/surf_resource.h"
#include "simgrid/sg_config.h"
#include "vm_workstation_private.h"
-#include "surf/cpu_cas01_private.h"
-#include "surf/maxmin_private.h"
+#include "cpu_cas01_private.h"
+#include "maxmin_private.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
"Logging specific to the SURF VM workstation module");
* If you want to get a workstation_VM2013 object from host_lib, see
* ws->generic_resouce.model->type first. If it is
* SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
- XBT_INFO("Create VM(%s) @ PM(%s) with %ld mounted disks", name, sub_ws_name, xbt_dynar_length(ws->storage));
+ XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws_name, xbt_dynar_length(ws->storage));
xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
/* We create cpu_action corresponding to a VM process on the host operating system. */
- vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
+ /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
+ // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
+ vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, 0);
/* TODO:
- * - rebind each time you migrate a VM
* - check how network requests are scheduled between distinct processes competing for the same card.
*/
}
/*
* Update the physical host of the given VM
*/
-static void vm_ws_migrate(void *ind_vm_workstation, void *ind_dest_phys_workstation)
+static void vm_ws_migrate(void *ind_vm, void *ind_dst_pm)
{
/* ind_phys_workstation equals to smx_host_t */
- workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
- xbt_assert(vm_ws);
+ workstation_VM2013_t ws_vm2013 = surf_workstation_resource_priv(ind_vm);
+ workstation_CLM03_t ws_clm03_dst = surf_workstation_resource_priv(ind_dst_pm);
+ const char *vm_name = ws_vm2013->ws.generic_resource.name;
+ const char *pm_name_src = ws_vm2013->sub_ws->generic_resource.name;
+ const char *pm_name_dst = ws_clm03_dst->generic_resource.name;
+
+ xbt_assert(ws_vm2013);
+ xbt_assert(ws_clm03_dst);
/* do something */
- vm_ws->sub_ws = surf_workstation_resource_priv(ind_dest_phys_workstation);
+ /* update net_elm with that of the destination physical host */
+ void *old_net_elm = ws_vm2013->ws.net_elm;
+ void *new_net_elm = xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL);
+ xbt_assert(new_net_elm);
+
+ /* Unregister the current net_elm from host_lib. Do not call the free callback. */
+ xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
+
+ /* Then, resister the new one. */
+ ws_vm2013->ws.net_elm = new_net_elm;
+ xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, ws_vm2013->ws.net_elm);
+
+ ws_vm2013->sub_ws = ws_clm03_dst;
+
+ /* Update vcpu's action for the new pm */
+ {
+#if 0
+ XBT_INFO("cpu_action->remains %g", ws_vm2013->cpu_action->remains);
+ XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
+ ws_vm2013->cpu_action->remains,
+ ws_vm2013->cpu_action->start,
+ ws_vm2013->cpu_action->finish
+ );
+ XBT_INFO("cpu_action state %d", surf_action_state_get(ws_vm2013->cpu_action));
+#endif
+
+ /* create a cpu action bound to the pm model at the destination. */
+ surf_action_t new_cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_dst_pm, 0);
+
+ e_surf_action_state_t state = surf_action_state_get(ws_vm2013->cpu_action);
+ if (state != SURF_ACTION_DONE)
+ XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
+ if (ws_vm2013->cpu_action->remains > 0)
+ XBT_CRITICAL("FIXME: need copy the state(?), %f", ws_vm2013->cpu_action->remains);
+
+ int ret = surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
+ xbt_assert(ret == 1, "Bug: some resource still remains");
+
+ ws_vm2013->cpu_action = new_cpu_action;
+ }
+
+ XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
+ XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
}
/*
workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
cpu_Cas01_t cpu = surf_cpu_resource_priv(ind_vm_workstation);
const char *name = vm_ws->ws.generic_resource.name;
- XBT_INFO("%s", name);
xbt_assert(vm_ws);
xbt_assert(vm_ws->ws.generic_resource.model == surf_vm_workstation_model);
- /* xbt_lib_remove() deletes all entries associated to the VM from host_lib.
- * This function does not invoke the registered freeing callback of each
- * level.
+ /* We deregister objects from host_lib, without invoking the freeing callback
+ * of each level.
*
- * FIXME: But, this function deletes all levels of the key. We must
- * be sure that there is no entry at any level. */
- // xbt_lib_remove(host_lib, name);
- // Remove all others in the lib associated to the VM
- // Please note that you only remove the entries (and not free them)
+ * Do not call xbt_lib_remove() here. It deletes all levels of the key,
+ * including MSG_HOST_LEVEL and others. We should unregister only what we know.
+ */
xbt_lib_unset(host_lib, name, SURF_CPU_LEVEL, 0);
xbt_lib_unset(host_lib, name, ROUTING_HOST_LEVEL, 0);
- xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL, 0);
+ /* TODO: comment out when VM stroage is implemented. */
+ // xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
+
/* Free the cpu_action of the VM. */
int ret = surf_cpu_model_pm->action_unref(vm_ws->cpu_action);
surf_resource_free(vm_ws);
}
-static int vm_ws_get_state(void *ind_vm_ws){
+static int vm_ws_get_state(void *ind_vm_ws)
+{
return ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state;
}
-static void vm_ws_set_state(void *ind_vm_ws, int state){
- ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state=state;
+static void vm_ws_set_state(void *ind_vm_ws, int state)
+{
+ ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state = state;
+}
+
+static void vm_ws_suspend(void *ind_vm_ws)
+{
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
+
+ surf_action_suspend(vm_ws->cpu_action);
+
+ vm_ws->current_state = SURF_VM_STATE_SUSPENDED;
+}
+
+static void vm_ws_resume(void *ind_vm_ws)
+{
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
+
+ surf_action_resume(vm_ws->cpu_action);
+
+ vm_ws->current_state = SURF_VM_STATE_RUNNING;
+}
+
+static void vm_ws_save(void *ind_vm_ws)
+{
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
+
+ vm_ws->current_state = SURF_VM_STATE_SAVING;
+
+ /* FIXME: do something here */
+ surf_action_suspend(vm_ws->cpu_action);
+
+ vm_ws->current_state = SURF_VM_STATE_SAVED;
+}
+
+static void vm_ws_restore(void *ind_vm_ws)
+{
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
+
+ vm_ws->current_state = SURF_VM_STATE_RESTORING;
+
+ /* FIXME: do something here */
+ surf_action_resume(vm_ws->cpu_action);
+
+ vm_ws->current_state = SURF_VM_STATE_RUNNING;
}
}
+
+/* In the real world, processes on the guest operating system will be somewhat
+ * degraded due to virtualization overhead. The total CPU share that these
+ * processes get is smaller than that of the VM process gets on a host
+ * operating system. */
+const double virt_overhead = 0.95;
+
static double vm_ws_share_resources(surf_model_t workstation_model, double now)
{
/* TODO: udpate action's cost with the total cost of processes on the VM. */
-
/* 0. Make sure that we already calculated the resource share at the physical
* machine layer. */
{
workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
- /* skip if it is not a virtual machine */
if (!ws_clm03)
continue;
+ /* skip if it is not a virtual machine */
if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
continue;
xbt_assert(cpu_cas01, "cpu-less workstation");
XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
ws_clm03->generic_resource.name, ws_vm2013->sub_ws->generic_resource.name);
- cpu_cas01->constraint->bound = solved_value;
+ // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
+ // cpu_cas01->constraint->bound = solved_value;
+ surf_model_t cpu_model = cpu_cas01->generic_resource.model;
+ xbt_assert(cpu_model == surf_cpu_model_vm);
+ lmm_system_t vcpu_system = cpu_model->model_private->maxmin_system;
+ lmm_update_constraint_bound(vcpu_system, cpu_cas01->constraint, virt_overhead * solved_value);
}
continue;
/* It is a virtual machine, so we can cast it to workstation_VM2013_t */
- workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
{
- void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
+#if 0
+ workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
+ XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
+ ws_vm2013->cpu_action->remains,
+ ws_vm2013->cpu_action->start,
+ ws_vm2013->cpu_action->finish
+ );
+#endif
+#if 0
+ void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
- ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 100); // cost 0 is okay?
+ /* FIXME: this means busy loop? */
+ // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
+ ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
+#endif
+
}
}
#endif
/*
- * A surf level object will be useless in the upper layer. Returing the name
- * will be simple and suffcient.
+ * A surf level object will be useless in the upper layer. Returing the
+ * dict_elm of the host.
**/
-static const char *vm_ws_get_phys_host(void *ind_vm_ws)
+static void *vm_ws_get_pm(void *ind_vm_ws)
{
workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
- return vm_ws->sub_ws->generic_resource.name;
+ const char *sub_ws_name = vm_ws->sub_ws->generic_resource.name;
+
+ return xbt_lib_get_elm_or_null(host_lib, sub_ws_name);
}
+
+/* Adding a task to a VM updates the VCPU task on its physical machine. */
+static surf_action_t vm_ws_execute(void *workstation, double size)
+{
+ surf_resource_t ws = ((surf_resource_t) surf_workstation_resource_priv(workstation));
+
+ xbt_assert(ws->model->type == SURF_MODEL_TYPE_VM_WORKSTATION);
+ workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
+
+ double old_cost = vm_ws->cpu_action->cost;
+ double new_cost = old_cost + size;
+
+ XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
+ ws->name, vm_ws->sub_ws->generic_resource.name,
+ old_cost, new_cost);
+
+ vm_ws->cpu_action->cost = new_cost;
+
+ return ws_execute(workstation, size);
+}
+
+static void vm_ws_action_cancel(surf_action_t action)
+{
+ XBT_CRITICAL("FIXME: Not yet implemented. Reduce dummy action's cost by %f", action->cost);
+
+ ws_action_cancel(action);
+}
+
+
static void surf_vm_workstation_model_init_internal(void)
{
surf_model_t model = surf_model_init();
model->name = "Virtual Workstation";
model->type = SURF_MODEL_TYPE_VM_WORKSTATION;
- // model->action_unref = ws_action_unref;
- // model->action_cancel = ws_action_cancel;
+
+ model->action_unref = ws_action_unref;
+ model->action_cancel = vm_ws_action_cancel;
// model->action_state_set = ws_action_state_set;
model->model_private->finalize = ws_finalize;
-// model->suspend = ws_action_suspend;
-// model->resume = ws_action_resume;
+ /* operation for an action, not for VM it self */
+ model->suspend = ws_action_suspend;
+ model->resume = ws_action_resume;
// model->is_suspended = ws_action_is_suspended;
// model->set_max_duration = ws_action_set_max_duration;
model->set_priority = ws_action_set_priority;
+ model->set_bound = ws_action_set_bound;
// #ifdef HAVE_TRACING
// model->set_category = ws_action_set_category;
// #endif
-// model->get_remains = ws_action_get_remains;
+ model->get_remains = ws_action_get_remains;
// #ifdef HAVE_LATENCY_BOUND_TRACKING
// model->get_latency_limited = ws_get_latency_limited;
// #endif
xbt_assert(surf_cpu_model_vm);
model->extension.workstation.cpu_model = surf_cpu_model_vm;
- model->extension.workstation.execute = ws_execute;
- // model->extension.workstation.sleep = ws_action_sleep;
+ model->extension.workstation.execute = vm_ws_execute;
+ model->extension.workstation.sleep = ws_action_sleep;
model->extension.workstation.get_state = ws_get_state;
- // model->extension.workstation.get_speed = ws_get_speed;
+ model->extension.workstation.get_speed = ws_get_speed;
// model->extension.workstation.get_available_speed = ws_get_available_speed;
// model->extension.workstation.communicate = ws_communicate;
model->extension.vm_workstation.set_state = vm_ws_set_state;
model->extension.vm_workstation.get_state = vm_ws_get_state;
model->extension.vm_workstation.migrate = vm_ws_migrate;
- model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
model->extension.vm_workstation.destroy = vm_ws_destroy;
+ model->extension.vm_workstation.suspend = vm_ws_suspend;
+ model->extension.vm_workstation.resume = vm_ws_resume;
+ model->extension.vm_workstation.save = vm_ws_save;
+ model->extension.vm_workstation.restore = vm_ws_restore;
+ model->extension.vm_workstation.get_pm = vm_ws_get_pm;
+
+ model->extension.workstation.set_params = ws_set_params;
+ model->extension.workstation.get_params = ws_get_params;
surf_vm_workstation_model = model;
}
