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migration: Switch to COLO process after finishing loadvm

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Switch from normal migration loadvm process into COLO checkpoint process if
COLO mode is enabled.

We add three new members to struct MigrationIncomingState,
'have_colo_incoming_thread' and 'colo_incoming_thread' record the COLO
related thread for secondary VM, 'migration_incoming_co' records the
original migration incoming coroutine.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit@amitshah.net>
This commit is contained in:
zhanghailiang 2016-10-27 14:42:55 +08:00 • committed by Amit Shah
parent 0b827d5e72
commit 25d0c16f62
6 changed files with 67 additions and 0 deletions
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21
migration/colo.c
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@ -27,6 +27,13 @@ bool migration_in_colo_state(void)
return (s->state == MIGRATION_STATUS_COLO);
}
bool migration_incoming_in_colo_state(void)
{
MigrationIncomingState *mis = migration_incoming_get_current();
return mis && (mis->state == MIGRATION_STATUS_COLO);
}
static void colo_process_checkpoint(MigrationState *s)
{
qemu_mutex_lock_iothread();
@ -46,3 +53,17 @@ void migrate_start_colo_process(MigrationState *s)
colo_process_checkpoint(s);
qemu_mutex_lock_iothread();
}
void *colo_process_incoming_thread(void *opaque)
{
MigrationIncomingState *mis = opaque;
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_COLO);
/* TODO: COLO checkpoint restore loop */
migration_incoming_exit_colo();
return NULL;
}