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migration: Add state records for migration incoming 

For migration destination, we also need to know its state,
we will use it in COLO.

Here we add a new member 'state' for MigrationIncomingState,
and also use migrate_set_state() to modify its value.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>

dgilbert: Fixed early free of MigraitonIncomingState
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-3-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
zhanghailiang 2015-12-16 11:47:34 +00:00 committed by Amit Shah
parent 48781e5bf2
commit 93d7af6ff0
2 changed files with 11 additions and 6 deletions
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1
include/migration/migration.h
View File

@ -105,6 +105,7 @@ struct MigrationIncomingState {
QemuMutex rp_mutex; /* We send replies from multiple threads */
void *postcopy_tmp_page;
int state;
/* See savevm.c */
LoadStateEntry_Head loadvm_handlers;
};

16
migration/migration.c
View File

@ -111,6 +111,7 @@ MigrationIncomingState *migration_incoming_state_new(QEMUFile* f)
{
mis_current = g_new0(MigrationIncomingState, 1);
mis_current->from_src_file = f;
mis_current->state = MIGRATION_STATUS_NONE;
QLIST_INIT(&mis_current->loadvm_handlers);
qemu_mutex_init(&mis_current->rp_mutex);
qemu_event_init(&mis_current->main_thread_load_event, false);
@ -331,8 +332,8 @@ static void process_incoming_migration_co(void *opaque)
mis = migration_incoming_state_new(f);
postcopy_state_set(POSTCOPY_INCOMING_NONE);
migrate_generate_event(MIGRATION_STATUS_ACTIVE);
migrate_set_state(&mis->state, MIGRATION_STATUS_NONE,
MIGRATION_STATUS_ACTIVE);
ret = qemu_loadvm_state(f);
ps = postcopy_state_get();
@ -358,10 +359,10 @@ static void process_incoming_migration_co(void *opaque)
qemu_fclose(f);
free_xbzrle_decoded_buf();
migration_incoming_state_destroy();
if (ret < 0) {
migrate_generate_event(MIGRATION_STATUS_FAILED);
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_FAILED);
error_report("load of migration failed: %s", strerror(-ret));
migrate_decompress_threads_join();
exit(EXIT_FAILURE);
@ -370,7 +371,8 @@ static void process_incoming_migration_co(void *opaque)
/* Make sure all file formats flush their mutable metadata */
bdrv_invalidate_cache_all(&local_err);
if (local_err) {
migrate_generate_event(MIGRATION_STATUS_FAILED);
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_FAILED);
error_report_err(local_err);
migrate_decompress_threads_join();
exit(EXIT_FAILURE);
@ -402,7 +404,9 @@ static void process_incoming_migration_co(void *opaque)
* observer sees this event they might start to prod at the VM assuming
* it's ready to use.
*/
migrate_generate_event(MIGRATION_STATUS_COMPLETED);
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_COMPLETED);
migration_incoming_state_destroy();
}
void process_incoming_migration(QEMUFile *f)