void migrate_fd_put_ready(void *opaque)
{
FdMigrationState *s = opaque;
if (s->state != MIG_STATE_ACTIVE) {
DPRINTF("put_ready returning because of non-active state\n");
return;
}
DPRINTF("iterate\n");
if (qemu_savevm_state_iterate(s->mon, s->file) == 1) {
int state;
int old_vm_running = vm_running;
DPRINTF("done iterating\n");
vm_stop(0);
qemu_aio_flush();
bdrv_flush_all();
if ((qemu_savevm_state_complete(s->mon, s->file)) < 0) {
if (old_vm_running) {
vm_start();
}
state = MIG_STATE_ERROR;
} else {
state = MIG_STATE_COMPLETED;
}
migrate_fd_cleanup(s);
s->state = state;
}
}
void do_savevm(const char *name)
{
QEMUFile *f;
int saved_vm_running, ret;
f = qemu_fopen(name, "wb");
/* ??? Should this occur after vm_stop? */
qemu_aio_flush();
saved_vm_running = vm_running;
vm_stop(0);
if (!f) {
fprintf(logfile, "Failed to open savevm file '%s'\n", name);
goto the_end;
}
ret = qemu_savevm_state(f);
qemu_fclose(f);
if (ret < 0)
fprintf(logfile, "Error %d while writing VM to savevm file '%s'\n",
ret, name);
the_end:
if (saved_vm_running)
vm_start();
return;
}
static void virtio_blk_reset(VirtIODevice *vdev)
{
/*
* This should cancel pending requests, but can't do nicely until there
* are per-device request lists.
*/
qemu_aio_flush();
}
static void do_vm_stop(int reason)
{
if (vm_running) {
cpu_disable_ticks();
vm_running = 0;
pause_all_vcpus();
vm_state_notify(0, reason);
qemu_aio_flush();
bdrv_flush_all();
monitor_protocol_event(QEVENT_STOP, NULL);
}
}
static void do_vm_stop(RunState state)
{
if (runstate_is_running()) {
cpu_disable_ticks();
pause_all_vcpus();
runstate_set(state);
vm_state_notify(0, state);
qemu_aio_flush();
bdrv_flush_all();
monitor_protocol_event(QEVENT_STOP, NULL);
}
}
static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
{
PCIXenPlatformState *s = opaque;
switch (addr - XEN_PLATFORM_IOPORT) {
case 0:
/* Unplug devices. Value is a bitmask of which devices to
unplug, with bit 0 the IDE devices, bit 1 the network
devices, and bit 2 the non-primary-master IDE devices. */
if (val & UNPLUG_ALL_IDE_DISKS) {
DPRINTF("unplug disks\n");
qemu_aio_flush();
bdrv_flush_all();
pci_unplug_disks(s->pci_dev.bus);
}
if (val & UNPLUG_ALL_NICS) {
DPRINTF("unplug nics\n");
pci_unplug_nics(s->pci_dev.bus);
}
if (val & UNPLUG_AUX_IDE_DISKS) {
DPRINTF("unplug auxiliary disks not supported\n");
}
break;
case 2:
switch (val) {
case 1:
DPRINTF("Citrix Windows PV drivers loaded in guest\n");
break;
case 0:
DPRINTF("Guest claimed to be running PV product 0?\n");
break;
default:
DPRINTF("Unknown PV product %d loaded in guest\n", val);
break;
}
s->driver_product_version = val;
break;
}
}
void do_loadvm(const char *name)
{
QEMUFile *f;
int saved_vm_running, ret;
/* Flush all IO requests so they don't interfere with the new state. */
qemu_aio_flush();
saved_vm_running = vm_running;
vm_stop(0);
/* restore the VM state */
f = qemu_fopen(name, "rb");
if (!f) {
fprintf(logfile, "Could not open VM state file\n");
goto the_end;
}
ret = qemu_loadvm_state(f);
qemu_fclose(f);
if (ret < 0) {
fprintf(logfile, "Error %d while loading savevm file '%s'\n",
ret, name);
goto the_end;
}
#if 0
/* del tmp file */
if (unlink(name) == -1)
fprintf(stderr, "delete tmp qemu state file failed.\n");
#endif
the_end:
if (saved_vm_running)
vm_start();
}
int main(int argc, char **argv)
{
int readonly = 0;
int growable = 0;
const char *sopt = "hVc:rsnmgk";
const struct option lopt[] = {
{ "help", 0, NULL, 'h' },
{ "version", 0, NULL, 'V' },
{ "offset", 1, NULL, 'o' },
{ "cmd", 1, NULL, 'c' },
{ "read-only", 0, NULL, 'r' },
{ "snapshot", 0, NULL, 's' },
{ "nocache", 0, NULL, 'n' },
{ "misalign", 0, NULL, 'm' },
{ "growable", 0, NULL, 'g' },
{ "native-aio", 0, NULL, 'k' },
{ NULL, 0, NULL, 0 }
};
int c;
int opt_index = 0;
int flags = 0;
progname = basename(argv[0]);
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
switch (c) {
case 's':
flags |= BDRV_O_SNAPSHOT;
break;
case 'n':
flags |= BDRV_O_NOCACHE;
break;
case 'c':
add_user_command(optarg);
break;
case 'r':
readonly = 1;
break;
case 'm':
misalign = 1;
break;
case 'g':
growable = 1;
break;
case 'k':
flags |= BDRV_O_NATIVE_AIO;
break;
case 'V':
printf("%s version %s\n", progname, VERSION);
exit(0);
case 'h':
usage(progname);
exit(0);
default:
usage(progname);
exit(1);
}
}
if ((argc - optind) > 1) {
usage(progname);
exit(1);
}
bdrv_init();
/* initialize commands */
quit_init();
help_init();
add_command(&open_cmd);
add_command(&close_cmd);
add_command(&read_cmd);
add_command(&readv_cmd);
add_command(&write_cmd);
add_command(&writev_cmd);
add_command(&multiwrite_cmd);
add_command(&aio_read_cmd);
add_command(&aio_write_cmd);
add_command(&aio_flush_cmd);
add_command(&flush_cmd);
add_command(&truncate_cmd);
add_command(&length_cmd);
add_command(&info_cmd);
add_command(&alloc_cmd);
add_args_command(init_args_command);
add_check_command(init_check_command);
/* open the device */
if (!readonly) {
flags |= BDRV_O_RDWR;
}
if ((argc - optind) == 1)
openfile(argv[optind], flags, growable);
command_loop();
/*
* Make sure all outstanding requests get flushed the program exits.
*/
qemu_aio_flush();
if (bs)
bdrv_close(bs);
return 0;
}
static int
aio_flush_f(int argc, char **argv)
{
qemu_aio_flush();
return 0;
}
