* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu-common.h"
qemu_announce_self();
DPRINTF("successfully loaded vm state\n");
+ /* Make sure all file formats flush their mutable metadata */
+ bdrv_invalidate_cache_all();
+
if (autostart) {
vm_start();
} else {
/* shared migration helpers */
-static void migrate_fd_monitor_suspend(MigrationState *s, Monitor *mon)
-{
- s->mon = mon;
- if (monitor_suspend(mon) == 0) {
- DPRINTF("suspending monitor\n");
- } else {
- monitor_printf(mon, "terminal does not allow synchronous "
- "migration, continuing detached\n");
- }
-}
-
static int migrate_fd_cleanup(MigrationState *s)
{
int ret = 0;
if (s->file) {
DPRINTF("closing file\n");
- if (qemu_fclose(s->file) != 0) {
- ret = -1;
- }
+ ret = qemu_fclose(s->file);
s->file = NULL;
- } else {
- if (s->mon) {
- monitor_resume(s->mon);
- }
}
if (s->fd != -1) {
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
qemu_file_put_notify(s->file);
- if (qemu_file_get_error(s->file)) {
+ if (s->file && qemu_file_get_error(s->file)) {
migrate_fd_error(s);
}
}
}
DPRINTF("iterate\n");
- ret = qemu_savevm_state_iterate(s->mon, s->file);
+ ret = qemu_savevm_state_iterate(s->file);
if (ret < 0) {
migrate_fd_error(s);
} else if (ret == 1) {
DPRINTF("done iterating\n");
vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);
- if (qemu_savevm_state_complete(s->mon, s->file) < 0) {
+ if (qemu_savevm_state_complete(s->file) < 0) {
migrate_fd_error(s);
} else {
migrate_fd_completed(s);
s->state = MIG_STATE_CANCELLED;
notifier_list_notify(&migration_state_notifiers, s);
- qemu_savevm_state_cancel(s->mon, s->file);
+ qemu_savevm_state_cancel(s->file);
migrate_fd_cleanup(s);
}
{
MigrationState *s = opaque;
- if (s->mon) {
- monitor_resume(s->mon);
- }
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
return s->close(s);
}
void remove_migration_state_change_notifier(Notifier *notify)
{
- notifier_list_remove(&migration_state_notifiers, notify);
+ notifier_remove(notify);
}
bool migration_is_active(MigrationState *s)
migrate_fd_close);
DPRINTF("beginning savevm\n");
- ret = qemu_savevm_state_begin(s->mon, s->file, s->blk, s->shared);
+ ret = qemu_savevm_state_begin(s->file, s->blk, s->shared);
if (ret < 0) {
DPRINTF("failed, %d\n", ret);
migrate_fd_error(s);
migrate_fd_put_ready(s);
}
-static MigrationState *migrate_init(Monitor *mon, int detach, int blk, int inc)
+static MigrationState *migrate_init(int blk, int inc)
{
MigrationState *s = migrate_get_current();
int64_t bandwidth_limit = s->bandwidth_limit;
s->bandwidth_limit = bandwidth_limit;
s->blk = blk;
s->shared = inc;
- s->mon = NULL;
+
s->bandwidth_limit = bandwidth_limit;
s->state = MIG_STATE_SETUP;
- if (!detach) {
- migrate_fd_monitor_suspend(s, mon);
- }
-
return s;
}
-int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
+static GSList *migration_blockers;
+
+void migrate_add_blocker(Error *reason)
+{
+ migration_blockers = g_slist_prepend(migration_blockers, reason);
+}
+
+void migrate_del_blocker(Error *reason)
+{
+ migration_blockers = g_slist_remove(migration_blockers, reason);
+}
+
+void qmp_migrate(const char *uri, bool has_blk, bool blk,
+ bool has_inc, bool inc, bool has_detach, bool detach,
+ Error **errp)
{
MigrationState *s = migrate_get_current();
const char *p;
- int detach = qdict_get_try_bool(qdict, "detach", 0);
- int blk = qdict_get_try_bool(qdict, "blk", 0);
- int inc = qdict_get_try_bool(qdict, "inc", 0);
- const char *uri = qdict_get_str(qdict, "uri");
int ret;
if (s->state == MIG_STATE_ACTIVE) {
- monitor_printf(mon, "migration already in progress\n");
- return -1;
+ error_set(errp, QERR_MIGRATION_ACTIVE);
+ return;
}
- if (qemu_savevm_state_blocked(mon)) {
- return -1;
+ if (qemu_savevm_state_blocked(errp)) {
+ return;
}
- s = migrate_init(mon, detach, blk, inc);
+ if (migration_blockers) {
+ *errp = error_copy(migration_blockers->data);
+ return;
+ }
+
+ s = migrate_init(blk, inc);
if (strstart(uri, "tcp:", &p)) {
ret = tcp_start_outgoing_migration(s, p);
ret = fd_start_outgoing_migration(s, p);
#endif
} else {
- monitor_printf(mon, "unknown migration protocol: %s\n", uri);
- ret = -EINVAL;
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol");
+ return;
}
if (ret < 0) {
- monitor_printf(mon, "migration failed: %s\n", strerror(-ret));
- return ret;
+ DPRINTF("migration failed: %s\n", strerror(-ret));
+ /* FIXME: we should return meaningful errors */
+ error_set(errp, QERR_UNDEFINED_ERROR);
+ return;
}
notifier_list_notify(&migration_state_notifiers, s);
- return 0;
}
-int do_migrate_cancel(Monitor *mon, const QDict *qdict, QObject **ret_data)
+void qmp_migrate_cancel(Error **errp)
{
migrate_fd_cancel(migrate_get_current());
- return 0;
}
-int do_migrate_set_speed(Monitor *mon, const QDict *qdict, QObject **ret_data)
+void qmp_migrate_set_speed(int64_t value, Error **errp)
{
- int64_t d;
MigrationState *s;
- d = qdict_get_int(qdict, "value");
- if (d < 0) {
- d = 0;
+ if (value < 0) {
+ value = 0;
}
s = migrate_get_current();
- s->bandwidth_limit = d;
+ s->bandwidth_limit = value;
qemu_file_set_rate_limit(s->file, s->bandwidth_limit);
-
- return 0;
}
-int do_migrate_set_downtime(Monitor *mon, const QDict *qdict,
- QObject **ret_data)
+void qmp_migrate_set_downtime(double value, Error **errp)
{
- double d;
-
- d = qdict_get_double(qdict, "value") * 1e9;
- d = MAX(0, MIN(UINT64_MAX, d));
- max_downtime = (uint64_t)d;
-
- return 0;
+ value *= 1e9;
+ value = MAX(0, MIN(UINT64_MAX, value));
+ max_downtime = (uint64_t)value;
}
projects / qemu.git / blobdiff