2008-10-13 07:12:02 +04:00
|
|
|
/*
|
|
|
|
* QEMU live migration
|
|
|
|
*
|
|
|
|
* Copyright IBM, Corp. 2008
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
|
|
*
|
|
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
|
|
* the COPYING file in the top-level directory.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "qemu-common.h"
|
|
|
|
#include "migration.h"
|
2009-03-06 02:01:23 +03:00
|
|
|
#include "monitor.h"
|
2008-11-11 19:46:33 +03:00
|
|
|
#include "buffered_file.h"
|
|
|
|
#include "sysemu.h"
|
|
|
|
#include "block.h"
|
|
|
|
#include "qemu_socket.h"
|
2009-11-30 20:21:21 +03:00
|
|
|
#include "block-migration.h"
|
2009-12-10 22:16:05 +03:00
|
|
|
#include "qemu-objects.h"
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
//#define DEBUG_MIGRATION
|
|
|
|
|
|
|
|
#ifdef DEBUG_MIGRATION
|
2010-02-07 02:03:50 +03:00
|
|
|
#define DPRINTF(fmt, ...) \
|
2008-11-11 19:46:33 +03:00
|
|
|
do { printf("migration: " fmt, ## __VA_ARGS__); } while (0)
|
|
|
|
#else
|
2010-02-07 02:03:50 +03:00
|
|
|
#define DPRINTF(fmt, ...) \
|
2008-11-11 19:46:33 +03:00
|
|
|
do { } while (0)
|
|
|
|
#endif
|
2008-10-13 07:12:02 +04:00
|
|
|
|
|
|
|
/* Migration speed throttling */
|
|
|
|
static uint32_t max_throttle = (32 << 20);
|
|
|
|
|
|
|
|
static MigrationState *current_migration;
|
|
|
|
|
|
|
|
void qemu_start_incoming_migration(const char *uri)
|
|
|
|
{
|
2008-10-13 07:14:31 +04:00
|
|
|
const char *p;
|
|
|
|
|
|
|
|
if (strstart(uri, "tcp:", &p))
|
|
|
|
tcp_start_incoming_migration(p);
|
2008-11-11 19:46:33 +03:00
|
|
|
#if !defined(WIN32)
|
|
|
|
else if (strstart(uri, "exec:", &p))
|
|
|
|
exec_start_incoming_migration(p);
|
2009-08-05 19:24:29 +04:00
|
|
|
else if (strstart(uri, "unix:", &p))
|
|
|
|
unix_start_incoming_migration(p);
|
2009-08-18 17:56:25 +04:00
|
|
|
else if (strstart(uri, "fd:", &p))
|
|
|
|
fd_start_incoming_migration(p);
|
2008-11-11 19:46:33 +03:00
|
|
|
#endif
|
2008-10-13 07:14:31 +04:00
|
|
|
else
|
|
|
|
fprintf(stderr, "unknown migration protocol: %s\n", uri);
|
2008-10-13 07:12:02 +04:00
|
|
|
}
|
|
|
|
|
2010-02-11 04:49:57 +03:00
|
|
|
int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
2008-10-13 07:12:02 +04:00
|
|
|
{
|
2008-10-13 07:14:31 +04:00
|
|
|
MigrationState *s = NULL;
|
|
|
|
const char *p;
|
2009-08-28 22:27:14 +04:00
|
|
|
int detach = qdict_get_int(qdict, "detach");
|
|
|
|
const char *uri = qdict_get_str(qdict, "uri");
|
2009-11-30 20:21:19 +03:00
|
|
|
|
|
|
|
if (current_migration &&
|
|
|
|
current_migration->get_status(current_migration) == MIG_STATE_ACTIVE) {
|
|
|
|
monitor_printf(mon, "migration already in progress\n");
|
2010-02-11 04:49:57 +03:00
|
|
|
return -1;
|
2009-11-30 20:21:19 +03:00
|
|
|
}
|
|
|
|
|
2010-02-11 04:49:57 +03:00
|
|
|
if (strstart(uri, "tcp:", &p)) {
|
2009-11-30 20:21:21 +03:00
|
|
|
s = tcp_start_outgoing_migration(mon, p, max_throttle, detach,
|
2009-11-02 16:40:58 +03:00
|
|
|
(int)qdict_get_int(qdict, "blk"),
|
|
|
|
(int)qdict_get_int(qdict, "inc"));
|
2008-11-11 19:46:33 +03:00
|
|
|
#if !defined(WIN32)
|
2010-02-11 04:49:57 +03:00
|
|
|
} else if (strstart(uri, "exec:", &p)) {
|
2009-11-30 20:21:21 +03:00
|
|
|
s = exec_start_outgoing_migration(mon, p, max_throttle, detach,
|
2009-11-02 16:40:58 +03:00
|
|
|
(int)qdict_get_int(qdict, "blk"),
|
|
|
|
(int)qdict_get_int(qdict, "inc"));
|
2010-02-11 04:49:57 +03:00
|
|
|
} else if (strstart(uri, "unix:", &p)) {
|
2009-11-30 20:21:21 +03:00
|
|
|
s = unix_start_outgoing_migration(mon, p, max_throttle, detach,
|
2009-11-02 16:40:58 +03:00
|
|
|
(int)qdict_get_int(qdict, "blk"),
|
|
|
|
(int)qdict_get_int(qdict, "inc"));
|
2010-02-11 04:49:57 +03:00
|
|
|
} else if (strstart(uri, "fd:", &p)) {
|
2009-11-02 16:40:58 +03:00
|
|
|
s = fd_start_outgoing_migration(mon, p, max_throttle, detach,
|
|
|
|
(int)qdict_get_int(qdict, "blk"),
|
|
|
|
(int)qdict_get_int(qdict, "inc"));
|
2008-11-11 19:46:33 +03:00
|
|
|
#endif
|
2010-02-11 04:49:57 +03:00
|
|
|
} else {
|
2009-03-06 02:01:23 +03:00
|
|
|
monitor_printf(mon, "unknown migration protocol: %s\n", uri);
|
2010-02-11 04:49:57 +03:00
|
|
|
return -1;
|
|
|
|
}
|
2008-10-13 07:14:31 +04:00
|
|
|
|
2010-02-11 04:49:57 +03:00
|
|
|
if (s == NULL) {
|
2009-03-06 02:01:23 +03:00
|
|
|
monitor_printf(mon, "migration failed\n");
|
2010-02-11 04:49:57 +03:00
|
|
|
return -1;
|
|
|
|
}
|
2008-10-13 07:14:31 +04:00
|
|
|
|
2010-02-11 04:49:57 +03:00
|
|
|
if (current_migration) {
|
|
|
|
current_migration->release(current_migration);
|
2008-10-13 07:14:31 +04:00
|
|
|
}
|
2010-02-11 04:49:57 +03:00
|
|
|
|
|
|
|
current_migration = s;
|
|
|
|
return 0;
|
2008-10-13 07:12:02 +04:00
|
|
|
}
|
|
|
|
|
2010-02-11 04:49:48 +03:00
|
|
|
int do_migrate_cancel(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
2008-10-13 07:12:02 +04:00
|
|
|
{
|
|
|
|
MigrationState *s = current_migration;
|
|
|
|
|
|
|
|
if (s)
|
2008-10-25 02:10:31 +04:00
|
|
|
s->cancel(s);
|
2010-02-11 04:49:48 +03:00
|
|
|
|
|
|
|
return 0;
|
2008-10-13 07:12:02 +04:00
|
|
|
}
|
|
|
|
|
2010-02-11 04:49:48 +03:00
|
|
|
int do_migrate_set_speed(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
2008-10-13 07:12:02 +04:00
|
|
|
{
|
|
|
|
double d;
|
2009-05-21 02:26:58 +04:00
|
|
|
FdMigrationState *s;
|
2008-10-13 07:12:02 +04:00
|
|
|
|
2010-01-25 16:23:04 +03:00
|
|
|
d = qdict_get_double(qdict, "value");
|
|
|
|
d = MAX(0, MIN(UINT32_MAX, d));
|
|
|
|
max_throttle = d;
|
2009-05-21 02:26:58 +04:00
|
|
|
|
2009-11-30 20:21:19 +03:00
|
|
|
s = migrate_to_fms(current_migration);
|
|
|
|
if (s && s->file) {
|
2009-05-21 02:26:58 +04:00
|
|
|
qemu_file_set_rate_limit(s->file, max_throttle);
|
|
|
|
}
|
2010-02-11 04:49:48 +03:00
|
|
|
|
|
|
|
return 0;
|
2008-10-13 07:12:02 +04:00
|
|
|
}
|
|
|
|
|
2009-05-28 23:22:57 +04:00
|
|
|
/* amount of nanoseconds we are willing to wait for migration to be down.
|
|
|
|
* the choice of nanoseconds is because it is the maximum resolution that
|
|
|
|
* get_clock() can achieve. It is an internal measure. All user-visible
|
|
|
|
* units must be in seconds */
|
|
|
|
static uint64_t max_downtime = 30000000;
|
|
|
|
|
|
|
|
uint64_t migrate_max_downtime(void)
|
|
|
|
{
|
|
|
|
return max_downtime;
|
|
|
|
}
|
|
|
|
|
2010-02-11 04:49:48 +03:00
|
|
|
int do_migrate_set_downtime(Monitor *mon, const QDict *qdict,
|
|
|
|
QObject **ret_data)
|
2009-05-28 23:22:58 +04:00
|
|
|
{
|
|
|
|
double d;
|
|
|
|
|
2010-01-25 16:23:07 +03:00
|
|
|
d = qdict_get_double(qdict, "value") * 1e9;
|
|
|
|
d = MAX(0, MIN(UINT64_MAX, d));
|
2009-05-28 23:22:58 +04:00
|
|
|
max_downtime = (uint64_t)d;
|
2010-02-11 04:49:48 +03:00
|
|
|
|
|
|
|
return 0;
|
2009-05-28 23:22:58 +04:00
|
|
|
}
|
|
|
|
|
2009-12-10 22:16:05 +03:00
|
|
|
static void migrate_print_status(Monitor *mon, const char *name,
|
|
|
|
const QDict *status_dict)
|
2008-10-13 07:12:02 +04:00
|
|
|
{
|
2009-12-10 22:16:05 +03:00
|
|
|
QDict *qdict;
|
|
|
|
|
|
|
|
qdict = qobject_to_qdict(qdict_get(status_dict, name));
|
|
|
|
|
|
|
|
monitor_printf(mon, "transferred %s: %" PRIu64 " kbytes\n", name,
|
|
|
|
qdict_get_int(qdict, "transferred") >> 10);
|
|
|
|
monitor_printf(mon, "remaining %s: %" PRIu64 " kbytes\n", name,
|
|
|
|
qdict_get_int(qdict, "remaining") >> 10);
|
|
|
|
monitor_printf(mon, "total %s: %" PRIu64 " kbytes\n", name,
|
|
|
|
qdict_get_int(qdict, "total") >> 10);
|
|
|
|
}
|
|
|
|
|
|
|
|
void do_info_migrate_print(Monitor *mon, const QObject *data)
|
|
|
|
{
|
|
|
|
QDict *qdict;
|
|
|
|
|
|
|
|
qdict = qobject_to_qdict(data);
|
|
|
|
|
|
|
|
monitor_printf(mon, "Migration status: %s\n",
|
|
|
|
qdict_get_str(qdict, "status"));
|
|
|
|
|
|
|
|
if (qdict_haskey(qdict, "ram")) {
|
|
|
|
migrate_print_status(mon, "ram", qdict);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (qdict_haskey(qdict, "disk")) {
|
|
|
|
migrate_print_status(mon, "disk", qdict);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void migrate_put_status(QDict *qdict, const char *name,
|
|
|
|
uint64_t trans, uint64_t rem, uint64_t total)
|
|
|
|
{
|
|
|
|
QObject *obj;
|
|
|
|
|
|
|
|
obj = qobject_from_jsonf("{ 'transferred': %" PRId64 ", "
|
|
|
|
"'remaining': %" PRId64 ", "
|
|
|
|
"'total': %" PRId64 " }", trans, rem, total);
|
|
|
|
qdict_put_obj(qdict, name, obj);
|
|
|
|
}
|
|
|
|
|
|
|
|
void do_info_migrate(Monitor *mon, QObject **ret_data)
|
|
|
|
{
|
|
|
|
QDict *qdict;
|
2008-10-13 07:12:02 +04:00
|
|
|
MigrationState *s = current_migration;
|
2009-03-06 02:01:23 +03:00
|
|
|
|
2008-10-13 07:12:02 +04:00
|
|
|
if (s) {
|
2008-10-25 02:10:31 +04:00
|
|
|
switch (s->get_status(s)) {
|
|
|
|
case MIG_STATE_ACTIVE:
|
2009-12-10 22:16:05 +03:00
|
|
|
qdict = qdict_new();
|
|
|
|
qdict_put(qdict, "status", qstring_from_str("active"));
|
|
|
|
|
|
|
|
migrate_put_status(qdict, "ram", ram_bytes_transferred(),
|
|
|
|
ram_bytes_remaining(), ram_bytes_total());
|
|
|
|
|
2009-11-30 20:21:21 +03:00
|
|
|
if (blk_mig_active()) {
|
2009-12-10 22:16:05 +03:00
|
|
|
migrate_put_status(qdict, "disk", blk_mig_bytes_transferred(),
|
|
|
|
blk_mig_bytes_remaining(),
|
|
|
|
blk_mig_bytes_total());
|
2009-11-30 20:21:21 +03:00
|
|
|
}
|
2009-12-10 22:16:05 +03:00
|
|
|
|
|
|
|
*ret_data = QOBJECT(qdict);
|
2008-10-25 02:10:31 +04:00
|
|
|
break;
|
|
|
|
case MIG_STATE_COMPLETED:
|
2009-12-10 22:16:05 +03:00
|
|
|
*ret_data = qobject_from_jsonf("{ 'status': 'completed' }");
|
2008-10-25 02:10:31 +04:00
|
|
|
break;
|
|
|
|
case MIG_STATE_ERROR:
|
2009-12-10 22:16:05 +03:00
|
|
|
*ret_data = qobject_from_jsonf("{ 'status': 'failed' }");
|
2008-10-25 02:10:31 +04:00
|
|
|
break;
|
|
|
|
case MIG_STATE_CANCELLED:
|
2009-12-10 22:16:05 +03:00
|
|
|
*ret_data = qobject_from_jsonf("{ 'status': 'cancelled' }");
|
2008-10-25 02:10:31 +04:00
|
|
|
break;
|
|
|
|
}
|
2008-10-13 07:12:02 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-11-11 19:46:33 +03:00
|
|
|
/* shared migration helpers */
|
|
|
|
|
2009-11-30 20:21:21 +03:00
|
|
|
void migrate_fd_monitor_suspend(FdMigrationState *s, Monitor *mon)
|
2009-03-06 02:01:42 +03:00
|
|
|
{
|
2009-11-30 20:21:21 +03:00
|
|
|
s->mon = mon;
|
|
|
|
if (monitor_suspend(mon) == 0) {
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("suspending monitor\n");
|
2009-11-30 20:21:21 +03:00
|
|
|
} else {
|
|
|
|
monitor_printf(mon, "terminal does not allow synchronous "
|
2009-03-06 02:01:51 +03:00
|
|
|
"migration, continuing detached\n");
|
2009-11-30 20:21:21 +03:00
|
|
|
}
|
2009-03-06 02:01:42 +03:00
|
|
|
}
|
|
|
|
|
2008-11-11 19:46:33 +03:00
|
|
|
void migrate_fd_error(FdMigrationState *s)
|
|
|
|
{
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("setting error state\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
s->state = MIG_STATE_ERROR;
|
|
|
|
migrate_fd_cleanup(s);
|
|
|
|
}
|
|
|
|
|
2010-06-02 23:55:25 +04:00
|
|
|
int migrate_fd_cleanup(FdMigrationState *s)
|
2008-11-11 19:46:33 +03:00
|
|
|
{
|
2010-06-02 23:55:25 +04:00
|
|
|
int ret = 0;
|
|
|
|
|
2008-11-11 19:46:33 +03:00
|
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
|
|
|
|
|
|
|
|
if (s->file) {
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("closing file\n");
|
2010-06-02 23:55:25 +04:00
|
|
|
if (qemu_fclose(s->file) != 0) {
|
|
|
|
ret = -1;
|
|
|
|
}
|
2009-11-30 20:21:19 +03:00
|
|
|
s->file = NULL;
|
2008-11-11 19:46:33 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
if (s->fd != -1)
|
|
|
|
close(s->fd);
|
|
|
|
|
|
|
|
/* Don't resume monitor until we've flushed all of the buffers */
|
2009-11-30 20:21:21 +03:00
|
|
|
if (s->mon) {
|
|
|
|
monitor_resume(s->mon);
|
|
|
|
}
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
s->fd = -1;
|
2010-06-02 23:55:25 +04:00
|
|
|
|
|
|
|
return ret;
|
2008-11-11 19:46:33 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_put_notify(void *opaque)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = opaque;
|
|
|
|
|
|
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
|
|
|
|
qemu_file_put_notify(s->file);
|
|
|
|
}
|
|
|
|
|
|
|
|
ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = opaque;
|
|
|
|
ssize_t ret;
|
|
|
|
|
|
|
|
do {
|
|
|
|
ret = s->write(s, data, size);
|
2009-05-19 15:08:53 +04:00
|
|
|
} while (ret == -1 && ((s->get_error(s)) == EINTR));
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
if (ret == -1)
|
|
|
|
ret = -(s->get_error(s));
|
|
|
|
|
|
|
|
if (ret == -EAGAIN)
|
|
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, migrate_fd_put_notify, s);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_connect(FdMigrationState *s)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
s->file = qemu_fopen_ops_buffered(s,
|
|
|
|
s->bandwidth_limit,
|
|
|
|
migrate_fd_put_buffer,
|
|
|
|
migrate_fd_put_ready,
|
|
|
|
migrate_fd_wait_for_unfreeze,
|
|
|
|
migrate_fd_close);
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("beginning savevm\n");
|
2009-11-30 20:21:21 +03:00
|
|
|
ret = qemu_savevm_state_begin(s->mon, s->file, s->mig_state.blk,
|
2009-11-02 16:40:58 +03:00
|
|
|
s->mig_state.shared);
|
2008-11-11 19:46:33 +03:00
|
|
|
if (ret < 0) {
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("failed, %d\n", ret);
|
2008-11-11 19:46:33 +03:00
|
|
|
migrate_fd_error(s);
|
|
|
|
return;
|
|
|
|
}
|
2009-11-02 16:40:58 +03:00
|
|
|
|
2008-11-11 19:46:33 +03:00
|
|
|
migrate_fd_put_ready(s);
|
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_put_ready(void *opaque)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = opaque;
|
|
|
|
|
|
|
|
if (s->state != MIG_STATE_ACTIVE) {
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("put_ready returning because of non-active state\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("iterate\n");
|
2009-11-30 20:21:21 +03:00
|
|
|
if (qemu_savevm_state_iterate(s->mon, s->file) == 1) {
|
2009-04-05 23:30:33 +04:00
|
|
|
int state;
|
2009-07-09 22:25:47 +04:00
|
|
|
int old_vm_running = vm_running;
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("done iterating\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
vm_stop(0);
|
|
|
|
|
2009-07-06 17:32:09 +04:00
|
|
|
qemu_aio_flush();
|
2008-11-11 19:46:33 +03:00
|
|
|
bdrv_flush_all();
|
2009-11-30 20:21:21 +03:00
|
|
|
if ((qemu_savevm_state_complete(s->mon, s->file)) < 0) {
|
2009-07-09 22:25:47 +04:00
|
|
|
if (old_vm_running) {
|
|
|
|
vm_start();
|
|
|
|
}
|
2009-04-05 23:30:33 +04:00
|
|
|
state = MIG_STATE_ERROR;
|
|
|
|
} else {
|
|
|
|
state = MIG_STATE_COMPLETED;
|
|
|
|
}
|
2010-06-02 23:55:25 +04:00
|
|
|
if (migrate_fd_cleanup(s) < 0) {
|
|
|
|
if (old_vm_running) {
|
|
|
|
vm_start();
|
|
|
|
}
|
|
|
|
state = MIG_STATE_ERROR;
|
|
|
|
}
|
2009-04-05 23:30:33 +04:00
|
|
|
s->state = state;
|
2008-11-11 19:46:33 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int migrate_fd_get_status(MigrationState *mig_state)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = migrate_to_fms(mig_state);
|
|
|
|
return s->state;
|
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_cancel(MigrationState *mig_state)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = migrate_to_fms(mig_state);
|
|
|
|
|
|
|
|
if (s->state != MIG_STATE_ACTIVE)
|
|
|
|
return;
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("cancelling migration\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
s->state = MIG_STATE_CANCELLED;
|
2009-11-30 20:21:21 +03:00
|
|
|
qemu_savevm_state_cancel(s->mon, s->file);
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
migrate_fd_cleanup(s);
|
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_release(MigrationState *mig_state)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = migrate_to_fms(mig_state);
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("releasing state\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
|
|
|
|
if (s->state == MIG_STATE_ACTIVE) {
|
|
|
|
s->state = MIG_STATE_CANCELLED;
|
|
|
|
migrate_fd_cleanup(s);
|
|
|
|
}
|
2010-06-09 09:44:31 +04:00
|
|
|
qemu_free(s);
|
2008-11-11 19:46:33 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void migrate_fd_wait_for_unfreeze(void *opaque)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = opaque;
|
|
|
|
int ret;
|
|
|
|
|
2010-02-07 02:03:50 +03:00
|
|
|
DPRINTF("wait for unfreeze\n");
|
2008-11-11 19:46:33 +03:00
|
|
|
if (s->state != MIG_STATE_ACTIVE)
|
|
|
|
return;
|
|
|
|
|
|
|
|
do {
|
|
|
|
fd_set wfds;
|
|
|
|
|
|
|
|
FD_ZERO(&wfds);
|
|
|
|
FD_SET(s->fd, &wfds);
|
|
|
|
|
|
|
|
ret = select(s->fd + 1, NULL, &wfds, NULL, NULL);
|
|
|
|
} while (ret == -1 && (s->get_error(s)) == EINTR);
|
|
|
|
}
|
|
|
|
|
|
|
|
int migrate_fd_close(void *opaque)
|
|
|
|
{
|
|
|
|
FdMigrationState *s = opaque;
|
2009-06-08 15:28:01 +04:00
|
|
|
|
|
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
|
2008-11-11 19:46:33 +03:00
|
|
|
return s->close(s);
|
|
|
|
}
|