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COLO: Remove colo_state migration struct

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We need to know if migration is going into COLO state for
incoming side before start normal migration.

Instead by using the VMStateDescription to send colo_state
from source side to destination side, we use MIG_CMD_ENABLE_COLO
to indicate whether COLO is enabled or not.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2018-09-03 12:38:47 +08:00 • committed by Jason Wang
parent 8e48ac9586
commit aad555c229
9 changed files with 57 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

13
migration/colo.c
View file

@ -152,6 +152,17 @@ static void primary_vm_do_failover(void)
qemu_sem_post(&s->colo_exit_sem);
}
COLOMode get_colo_mode(void)
{
if (migration_in_colo_state()) {
return COLO_MODE_PRIMARY;
} else if (migration_incoming_in_colo_state()) {
return COLO_MODE_SECONDARY;
} else {
return COLO_MODE_UNKNOWN;
}
}
void colo_do_failover(MigrationState *s)
{
/* Make sure VM stopped while failover happened. */
@ -746,7 +757,7 @@ out:
if (mis->to_src_file) {
qemu_fclose(mis->to_src_file);
}
migration_incoming_exit_colo();
migration_incoming_disable_colo();
rcu_unregister_thread();
return NULL;