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qemu: Implement VIR_MIGRATE_POSTCOPY_RESUME for Finish phase

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Everything was already done in the normal Finish phase and vCPUs are
running. We just need to wait for all remaining data to be transferred.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Jiri Denemark 2022-05-10 15:20:25 +02:00
parent 55e49b1b72
commit c1d40d2c40
1 changed files with 41 additions and 7 deletions
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48
src/qemu/qemu_migration.c
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@ -6565,6 +6565,22 @@ qemuMigrationDstFinishFresh(virQEMUDriver *driver,
}
static int
qemuMigrationDstFinishResume(virQEMUDriver *driver,
virDomainObj *vm)
{
VIR_DEBUG("vm=%p", vm);
if (qemuMigrationDstWaitForCompletion(driver, vm,
VIR_ASYNC_JOB_MIGRATION_IN,
false) < 0) {
return -1;
}
return 0;
}
static virDomainPtr
qemuMigrationDstFinishActive(virQEMUDriver *driver,
virConnectPtr dconn,
@ -6587,7 +6603,7 @@ qemuMigrationDstFinishActive(virQEMUDriver *driver,
qemuDomainJobPrivate *jobPriv = priv->job.privateData;
virObjectEvent *event;
bool inPostCopy = false;
bool doKill = true;
bool doKill = priv->job.phase != QEMU_MIGRATION_PHASE_FINISH_RESUME;
int rc;
VIR_DEBUG("vm=%p, flags=0x%lx, retcode=%d",
@ -6612,8 +6628,14 @@ qemuMigrationDstFinishActive(virQEMUDriver *driver,
goto error;
}
rc = qemuMigrationDstFinishFresh(driver, vm, mig, flags, v3proto,
timeReceived, &doKill, &inPostCopy);
if (flags & VIR_MIGRATE_POSTCOPY_RESUME) {
rc = qemuMigrationDstFinishResume(driver, vm);
inPostCopy = true;
} else {
rc = qemuMigrationDstFinishFresh(driver, vm, mig, flags, v3proto,
timeReceived, &doKill, &inPostCopy);
}
if (rc < 0 ||
!(dom = virGetDomain(dconn, vm->def->name, vm->def->uuid, vm->def->id)))
goto error;
@ -6684,6 +6706,8 @@ qemuMigrationDstFinish(virQEMUDriver *driver,
qemuDomainObjPrivate *priv = vm->privateData;
unsigned short port;
unsigned long long timeReceived = 0;
int phase = v3proto ? QEMU_MIGRATION_PHASE_FINISH3
: QEMU_MIGRATION_PHASE_FINISH2;
VIR_DEBUG("driver=%p, dconn=%p, vm=%p, cookiein=%s, cookieinlen=%d, "
"cookieout=%p, cookieoutlen=%p, flags=0x%lx, retcode=%d",
@ -6698,14 +6722,24 @@ qemuMigrationDstFinish(virQEMUDriver *driver,
goto cleanup;
}
if (flags & VIR_MIGRATE_POSTCOPY_RESUME) {
if (!qemuMigrationAnyCanResume(vm, VIR_ASYNC_JOB_MIGRATION_IN, flags,
QEMU_MIGRATION_PHASE_PREPARE_RESUME))
goto cleanup;
phase = QEMU_MIGRATION_PHASE_FINISH_RESUME;
}
ignore_value(virTimeMillisNow(&timeReceived));
if (qemuMigrationJobStartPhase(vm,
v3proto ? QEMU_MIGRATION_PHASE_FINISH3
: QEMU_MIGRATION_PHASE_FINISH2) < 0)
if (qemuMigrationJobStartPhase(vm, phase) < 0)
goto cleanup;
qemuDomainCleanupRemove(vm, qemuMigrationDstPrepareCleanup);
if (flags & VIR_MIGRATE_POSTCOPY_RESUME) {
virCloseCallbacksUnset(driver->closeCallbacks, vm,
qemuMigrationAnyConnectionClosed);
qemuDomainCleanupRemove(vm, qemuProcessCleanupMigrationJob);
} else {
qemuDomainCleanupRemove(vm, qemuMigrationDstPrepareCleanup);
}
g_clear_pointer(&priv->job.completed, virDomainJobDataFree);
cookie_flags = QEMU_MIGRATION_COOKIE_NETWORK |