Commit 18cc23d7 authored by zhanghailiang's avatar zhanghailiang Committed by Amit Shah
Browse files

COLO: Synchronize PVM's state to SVM periodically



Do checkpoint periodically, the default interval is 200ms.

Signed-off-by: default avatarzhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: default avatarLi Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: default avatarAmit Shah <amit.shah@redhat.com>
Signed-off-by: default avatarAmit Shah <amit@amitshah.net>
parent 68b53591
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+12 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@
 */

#include "qemu/osdep.h"
#include "qemu/timer.h"
#include "sysemu/sysemu.h"
#include "migration/colo.h"
#include "io/channel-buffer.h"
@@ -226,6 +227,7 @@ static void colo_process_checkpoint(MigrationState *s)
{
    QIOChannelBuffer *bioc;
    QEMUFile *fb = NULL;
    int64_t current_time, checkpoint_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
    Error *local_err = NULL;
    int ret;

@@ -254,10 +256,20 @@ static void colo_process_checkpoint(MigrationState *s)
    trace_colo_vm_state_change("stop", "run");

    while (s->state == MIGRATION_STATUS_COLO) {
        current_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
        if (current_time - checkpoint_time <
            s->parameters.x_checkpoint_delay) {
            int64_t delay_ms;

            delay_ms = s->parameters.x_checkpoint_delay -
                       (current_time - checkpoint_time);
            g_usleep(delay_ms * 1000);
        }
        ret = colo_do_checkpoint_transaction(s, bioc, fb);
        if (ret < 0) {
            goto out;
        }
        checkpoint_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
    }

out: