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/* Copyright (c) 2007-2025. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "simgrid/actor.h"
#include "simgrid/engine.h"
#include "simgrid/host.h"
#include "simgrid/mailbox.h"
#include "simgrid/plugins/live_migration.h"
#include "simgrid/vm.h"
#include "xbt/log.h"
#include "xbt/str.h"
#include "xbt/sysdep.h"
XBT_LOG_NEW_DEFAULT_CATEGORY(cloud_migration, "Messages specific for this example");
static void vm_migrate(sg_vm_t vm, sg_host_t dst_pm)
{
const_sg_host_t src_pm = sg_vm_get_pm(vm);
double mig_sta = simgrid_get_clock();
sg_vm_migrate(vm, dst_pm);
double mig_end = simgrid_get_clock();
XBT_INFO("%s migrated: %s->%s in %g s", sg_vm_get_name(vm), sg_host_get_name(src_pm), sg_host_get_name(dst_pm),
mig_end - mig_sta);
}
static void migration_worker_main(int argc, char* argv[])
{
xbt_assert(argc == 3);
const char* vm_name = argv[1];
const char* dst_pm_name = argv[2];
sg_host_t src_pm = sg_host_self();
sg_vm_t vm = sg_vm_by_name(src_pm, vm_name);
sg_host_t dst_pm = sg_host_by_name(dst_pm_name);
vm_migrate(vm, dst_pm);
}
static void vm_migrate_async(const_sg_vm_t vm, const_sg_host_t dst_pm)
{
const char* vm_name = sg_vm_get_name(vm);
const char* dst_pm_name = sg_host_get_name(dst_pm);
const char* argv[] = {"mig_work", vm_name, dst_pm_name, NULL};
sg_actor_create_("mig_wrk", sg_host_self(), &migration_worker_main, 3, argv);
}
static void master_main(int argc, char* argv[])
{
sg_host_t pm0 = sg_host_by_name("Fafard");
sg_host_t pm1 = sg_host_by_name("Tremblay");
const_sg_host_t pm2 = sg_host_by_name("Bourassa");
sg_vm_t vm0 = sg_vm_create_core(pm0, "VM0");
sg_vm_set_ramsize(vm0, 1e9); // 1Gbytes
sg_vm_start(vm0);
XBT_INFO("Test: Migrate a VM with %zu Mbytes RAM", sg_vm_get_ramsize(vm0) / 1000 / 1000);
vm_migrate(vm0, pm1);
sg_vm_destroy(vm0);
vm0 = sg_vm_create_core(pm0, "VM0");
sg_vm_set_ramsize(vm0, 1e8); // 100Mbytes
sg_vm_start(vm0);
XBT_INFO("Test: Migrate a VM with %zu Mbytes RAM", sg_vm_get_ramsize(vm0) / 1000 / 1000);
vm_migrate(vm0, pm1);
sg_vm_destroy(vm0);
vm0 = sg_vm_create_core(pm0, "VM0");
sg_vm_t vm1 = sg_vm_create_core(pm0, "VM1");
sg_vm_set_ramsize(vm0, 1e9); // 1Gbytes
sg_vm_set_ramsize(vm1, 1e9); // 1Gbytes
sg_vm_start(vm0);
sg_vm_start(vm1);
XBT_INFO("Test: Migrate two VMs at once from PM0 to PM1");
vm_migrate_async(vm0, pm1);
vm_migrate_async(vm1, pm1);
sg_actor_sleep_for(10000);
sg_vm_destroy(vm0);
sg_vm_destroy(vm1);
vm0 = sg_vm_create_core(pm0, "VM0");
vm1 = sg_vm_create_core(pm0, "VM1");
sg_vm_set_ramsize(vm0, 1e9); // 1Gbytes
sg_vm_set_ramsize(vm1, 1e9); // 1Gbytes
sg_vm_start(vm0);
sg_vm_start(vm1);
XBT_INFO("Test: Migrate two VMs at once to different PMs");
vm_migrate_async(vm0, pm1);
vm_migrate_async(vm1, pm2);
sg_actor_sleep_for(10000);
sg_vm_destroy(vm0);
sg_vm_destroy(vm1);
}
int main(int argc, char* argv[])
{
/* Get the arguments */
simgrid_init(&argc, argv);
sg_vm_live_migration_plugin_init();
/* load the platform file */
simgrid_load_platform(argv[1]);
sg_actor_create("master_", sg_host_by_name("Fafard"), &master_main, 0, NULL);
simgrid_run();
XBT_INFO("Bye (simulation time %g)", simgrid_get_clock());
return 0;
}
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