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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/plugins/live_migration.h"
#include "simgrid/s4u.hpp"
#include "simgrid/s4u/Engine.hpp"
#include "simgrid/s4u/VirtualMachine.hpp"
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_cloud_migration, "Messages specific for this example");
namespace sg4 = simgrid::s4u;
static void vm_migrate(sg4::VirtualMachine* vm, sg4::Host* dst_pm)
{
const sg4::Host* src_pm = vm->get_pm();
double mig_sta = sg4::Engine::get_clock();
sg_vm_migrate(vm, dst_pm);
double mig_end = sg4::Engine::get_clock();
XBT_INFO("%s migrated: %s->%s in %g s", vm->get_cname(), src_pm->get_cname(), dst_pm->get_cname(), mig_end - mig_sta);
}
static void vm_migrate_async(sg4::VirtualMachine* vm, sg4::Host* dst_pm)
{
sg4::Engine::get_instance()->add_actor("mig_wrk", sg4::Host::current(), vm_migrate, vm, dst_pm);
}
static void master_main()
{
sg4::Host* pm0 = sg4::Host::by_name("Fafard");
sg4::Host* pm1 = sg4::Host::by_name("Tremblay");
sg4::Host* pm2 = sg4::Host::by_name("Bourassa");
auto* vm0 = pm0->create_vm("VM0", 1);
vm0->set_ramsize(1e9); // 1Gbytes
vm0->start();
XBT_INFO("Test: Migrate a VM with %zu Mbytes RAM", vm0->get_ramsize() / 1000 / 1000);
vm_migrate(vm0, pm1);
vm0->destroy();
vm0 = pm0->create_vm("VM0", 1);
vm0->set_ramsize(1e8); // 100Mbytes
vm0->start();
XBT_INFO("Test: Migrate a VM with %zu Mbytes RAM", vm0->get_ramsize() / 1000 / 1000);
vm_migrate(vm0, pm1);
vm0->destroy();
vm0 = pm0->create_vm("VM0", 1);
auto* vm1 = pm0->create_vm("VM1", 1);
vm0->set_ramsize(1e9); // 1Gbytes
vm1->set_ramsize(1e9); // 1Gbytes
vm0->start();
vm1->start();
XBT_INFO("Test: Migrate two VMs at once from PM0 to PM1");
vm_migrate_async(vm0, pm1);
vm_migrate_async(vm1, pm1);
sg4::this_actor::sleep_for(10000);
vm0->destroy();
vm1->destroy();
vm0 = pm0->create_vm("VM0", 1);
vm1 = pm0->create_vm("VM1", 1);
vm0->set_ramsize(1e9); // 1Gbytes
vm1->set_ramsize(1e9); // 1Gbytes
vm0->start();
vm1->start();
XBT_INFO("Test: Migrate two VMs at once to different PMs");
vm_migrate_async(vm0, pm1);
vm_migrate_async(vm1, pm2);
sg4::this_actor::sleep_for(10000);
vm0->destroy();
vm1->destroy();
}
int main(int argc, char* argv[])
{
/* Get the arguments */
sg4::Engine e(&argc, argv);
sg_vm_live_migration_plugin_init();
/* load the platform file */
e.load_platform(argv[1]);
e.add_actor("master_", sg4::Host::by_name("Fafard"), master_main);
e.run();
XBT_INFO("Bye (simulation time %g)", sg4::Engine::get_clock());
return 0;
}
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