From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wen Congyang <wency@cn.fujitsu.com>
Subject: question about suspending the guest
Date: Fri, 27 Mar 2015 14:04:52 +0800
Message-ID: <5514F304.8020105@cn.fujitsu.com>
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When I test COLO, I find that suspending the primay guest will fail.

static void domain_suspend_common_wait_guest(libxl__egc *egc,
                                             libxl__domain_suspend_state2 *dss2)
{
    STATE_AO_GC(dss2->ao);
    int rc;

    LOG(DEBUG, "wait for the guest to suspend");

    rc = libxl__ev_xswatch_register(gc, &dss2->guest_watch,
                                    suspend_common_wait_guest_watch,
                                    "@releaseDomain");
    if (rc) goto err;

    rc = libxl__ev_time_register_rel(gc, &dss2->guest_timeout,
                                     suspend_common_wait_guest_timeout,
                                     60*1000);
    if (rc) goto err;
    return;

 err:
    domain_suspend_common_failed(egc, dss2);
}

suspend_common_wait_guest_watch() is not called and timeout. I don't know
who will wake up this watch.

Thanks
Wen Congyang