return ¤t_migration;
}
-int qemu_start_incoming_migration(const char *uri, Error **errp)
+void qemu_start_incoming_migration(const char *uri, Error **errp)
{
const char *p;
- int ret;
if (strstart(uri, "tcp:", &p))
- ret = tcp_start_incoming_migration(p, errp);
+ tcp_start_incoming_migration(p, errp);
#if !defined(WIN32)
else if (strstart(uri, "exec:", &p))
- ret = exec_start_incoming_migration(p);
+ exec_start_incoming_migration(p, errp);
else if (strstart(uri, "unix:", &p))
- ret = unix_start_incoming_migration(p);
+ unix_start_incoming_migration(p, errp);
else if (strstart(uri, "fd:", &p))
- ret = fd_start_incoming_migration(p);
+ fd_start_incoming_migration(p, errp);
#endif
else {
- fprintf(stderr, "unknown migration protocol: %s\n", uri);
- ret = -EPROTONOSUPPORT;
+ error_setg(errp, "unknown migration protocol: %s\n", uri);
}
- return ret;
}
-void process_incoming_migration(QEMUFile *f)
+static void process_incoming_migration_co(void *opaque)
{
- if (qemu_loadvm_state(f) < 0) {
+ QEMUFile *f = opaque;
+ int ret;
+
+ ret = qemu_loadvm_state(f);
+ qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL);
+ qemu_fclose(f);
+ if (ret < 0) {
fprintf(stderr, "load of migration failed\n");
exit(0);
}
if (autostart) {
vm_start();
} else {
- runstate_set(RUN_STATE_PRELAUNCH);
+ runstate_set(RUN_STATE_PAUSED);
}
}
+static void enter_migration_coroutine(void *opaque)
+{
+ Coroutine *co = opaque;
+ qemu_coroutine_enter(co, NULL);
+}
+
+void process_incoming_migration(QEMUFile *f)
+{
+ Coroutine *co = qemu_coroutine_create(process_incoming_migration_co);
+ int fd = qemu_get_fd(f);
+
+ assert(fd != -1);
+ socket_set_nonblock(fd);
+ qemu_set_fd_handler(fd, enter_migration_coroutine, NULL, co);
+ qemu_coroutine_enter(co, f);
+}
+
/* 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
info->ram->duplicate = dup_mig_pages_transferred();
info->ram->normal = norm_mig_pages_transferred();
info->ram->normal_bytes = norm_mig_bytes_transferred();
+ info->ram->dirty_pages_rate = s->dirty_pages_rate;
+
if (blk_mig_active()) {
info->has_disk = true;
{
int ret = 0;
- if (s->fd != -1) {
- qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
- }
-
if (s->file) {
DPRINTF("closing file\n");
ret = qemu_fclose(s->file);
s->file = NULL;
}
- if (s->fd != -1) {
- close(s->fd);
- s->fd = -1;
- }
-
+ migrate_fd_close(s);
return ret;
}
static void migrate_fd_put_notify(void *opaque)
{
MigrationState *s = opaque;
+ int ret;
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
- qemu_file_put_notify(s->file);
- if (s->file && qemu_file_get_error(s->file)) {
+ ret = qemu_file_put_notify(s->file);
+ if (ret) {
migrate_fd_error(s);
}
}
-static ssize_t migrate_fd_put_buffer(void *opaque, const void *data,
- size_t size)
+ssize_t migrate_fd_put_buffer(MigrationState *s, const void *data,
+ size_t size)
{
- MigrationState *s = opaque;
ssize_t ret;
if (s->state != MIG_STATE_ACTIVE) {
return ret;
}
-static void migrate_fd_put_ready(void *opaque)
+void migrate_fd_put_ready(MigrationState *s)
{
- MigrationState *s = opaque;
int ret;
if (s->state != MIG_STATE_ACTIVE) {
migrate_fd_cleanup(s);
}
-static void migrate_fd_wait_for_unfreeze(void *opaque)
+int migrate_fd_wait_for_unfreeze(MigrationState *s)
{
- MigrationState *s = opaque;
int ret;
DPRINTF("wait for unfreeze\n");
if (s->state != MIG_STATE_ACTIVE)
- return;
+ return -EINVAL;
do {
fd_set wfds;
} while (ret == -1 && (s->get_error(s)) == EINTR);
if (ret == -1) {
- qemu_file_set_error(s->file, -s->get_error(s));
+ return -s->get_error(s);
}
+ return 0;
}
-static int migrate_fd_close(void *opaque)
+int migrate_fd_close(MigrationState *s)
{
- MigrationState *s = opaque;
-
- qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
- return s->close(s);
+ int rc = 0;
+ if (s->fd != -1) {
+ qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
+ rc = s->close(s);
+ s->fd = -1;
+ }
+ return rc;
}
void add_migration_state_change_notifier(Notifier *notify)
int ret;
s->state = MIG_STATE_ACTIVE;
- 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);
+ s->file = qemu_fopen_ops_buffered(s);
DPRINTF("beginning savevm\n");
ret = qemu_savevm_state_begin(s->file, &s->params);
bool has_inc, bool inc, bool has_detach, bool detach,
Error **errp)
{
+ Error *local_err = NULL;
MigrationState *s = migrate_get_current();
MigrationParams params;
const char *p;
- int ret;
params.blk = blk;
params.shared = inc;
s = migrate_init(¶ms);
if (strstart(uri, "tcp:", &p)) {
- ret = tcp_start_outgoing_migration(s, p, errp);
+ tcp_start_outgoing_migration(s, p, &local_err);
#if !defined(WIN32)
} else if (strstart(uri, "exec:", &p)) {
- ret = exec_start_outgoing_migration(s, p);
+ exec_start_outgoing_migration(s, p, &local_err);
} else if (strstart(uri, "unix:", &p)) {
- ret = unix_start_outgoing_migration(s, p);
+ unix_start_outgoing_migration(s, p, &local_err);
} else if (strstart(uri, "fd:", &p)) {
- ret = fd_start_outgoing_migration(s, p);
+ fd_start_outgoing_migration(s, p, &local_err);
#endif
} else {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol");
return;
}
- if (ret < 0) {
- if (!error_is_set(errp)) {
- DPRINTF("migration failed: %s\n", strerror(-ret));
- /* FIXME: we should return meaningful errors */
- error_set(errp, QERR_UNDEFINED_ERROR);
- }
+ if (local_err) {
+ migrate_fd_error(s);
+ error_propagate(errp, local_err);
return;
}
projects / qemu.git / blobdiff