Commit 2518aec1 authored by zhanghailiang's avatar zhanghailiang Committed by Jason Wang
Browse files

COLO: quick failover process by kick COLO thread 



COLO thread may sleep at qemu_sem_wait(&s->colo_checkpoint_sem),
while failover works begin, It's better to wakeup it to quick
the process.

Signed-off-by: default avatarzhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
parent 7b343530

migration/colo.c

+8 −0
Original line number Diff line number Diff line
@@ -131,6 +131,11 @@ static void primary_vm_do_failover(void) 


    migrate_set_state(&s->state, MIGRATION_STATUS_COLO,

                      MIGRATION_STATUS_COMPLETED);

    /*

     * kick COLO thread which might wait at

     * qemu_sem_wait(&s->colo_checkpoint_sem).

     */

    colo_checkpoint_notify(migrate_get_current());



    /*

     * Wake up COLO thread which may blocked in recv() or send(),
@@ -539,6 +544,9 @@ static void colo_process_checkpoint(MigrationState *s) 


        qemu_sem_wait(&s->colo_checkpoint_sem);



        if (s->state != MIGRATION_STATUS_COLO) {

            goto out;

        }

        ret = colo_do_checkpoint_transaction(s, bioc, fb);

        if (ret < 0) {

            goto out;