7:27 p.m.
---
src/qemu/qemu_process.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 109 insertions(+), 1 deletions(-)
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 448b06e..48bd435 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -37,6 +37,7 @@
#include "qemu_hostdev.h"
#include "qemu_hotplug.h"
#include "qemu_bridge_filter.h"
+#include "qemu_migration.h"
#if HAVE_NUMACTL
# define NUMA_VERSION1_COMPATIBILITY 1
@@ -2236,6 +2237,111 @@ qemuProcessUpdateState(struct qemud_driver *driver,
virDomainObjPtr vm)
}
static int
+qemuProcessRecoverMigration(struct qemud_driver *driver,
+ virDomainObjPtr vm,
+ virConnectPtr conn,
+ enum qemuDomainAsyncJob job,
+ enum qemuMigrationJobPhase phase,
+ virDomainState state,
+ int reason)
+{
+ if (job == QEMU_ASYNC_JOB_MIGRATION_IN) {
+ switch (phase) {
+ case QEMU_MIGRATION_PHASE_NONE:
+ case QEMU_MIGRATION_PHASE_PERFORM2:
+ case QEMU_MIGRATION_PHASE_BEGIN3:
+ case QEMU_MIGRATION_PHASE_PERFORM3:
+ case QEMU_MIGRATION_PHASE_PERFORM3_DONE:
+ case QEMU_MIGRATION_PHASE_CONFIRM3_CANCELLED:
+ case QEMU_MIGRATION_PHASE_CONFIRM3:
+ case QEMU_MIGRATION_PHASE_LAST:
+ break;
+
+ case QEMU_MIGRATION_PHASE_PREPARE:
+ VIR_DEBUG("Killing unfinished incoming migration for domain %s",
+ vm->def->name);
+ return -1;
+
+ case QEMU_MIGRATION_PHASE_FINISH2:
+ /* source domain is already killed so let's just resume the domain
+ * and hope we are all set */
+ VIR_DEBUG("Incoming migration finished, resuming domain %s",
+ vm->def->name);
+ if (qemuProcessStartCPUs(driver, vm, conn,
+ VIR_DOMAIN_RUNNING_UNPAUSED) < 0) {
+ VIR_WARN("Could not resume domain %s", vm->def->name);
+ }
+ break;
+
+ case QEMU_MIGRATION_PHASE_FINISH3:
+ /* migration finished, we started resuming the domain but didn't
+ * confirm success or failure yet; killing it seems safest */
+ VIR_DEBUG("Killing migrated domain %s", vm->def->name);
+ return -1;
+ }
+ } else if (job == QEMU_ASYNC_JOB_MIGRATION_OUT) {
+ switch (phase) {
+ case QEMU_MIGRATION_PHASE_NONE:
+ case QEMU_MIGRATION_PHASE_PREPARE:
+ case QEMU_MIGRATION_PHASE_FINISH2:
+ case QEMU_MIGRATION_PHASE_FINISH3:
+ case QEMU_MIGRATION_PHASE_LAST:
+ break;
+
+ case QEMU_MIGRATION_PHASE_BEGIN3:
+ /* nothing happen so far, just forget we were about to migrate the
+ * domain */
+ break;
+
+ case QEMU_MIGRATION_PHASE_PERFORM2:
+ case QEMU_MIGRATION_PHASE_PERFORM3:
+ /* migration is still in progress, let's cancel it and resume the
+ * domain */
+ VIR_DEBUG("Canceling unfinished outgoing migration of domain %s",
+ vm->def->name);
+ /* TODO cancel possibly running migrate operation */
+ /* resume the domain but only if it was paused as a result of
+ * migration */
+ if (state == VIR_DOMAIN_PAUSED &&
+ (reason == VIR_DOMAIN_PAUSED_MIGRATION ||
+ reason == VIR_DOMAIN_PAUSED_UNKNOWN)) {
+ if (qemuProcessStartCPUs(driver, vm, conn,
+ VIR_DOMAIN_RUNNING_UNPAUSED) < 0) {
+ VIR_WARN("Could not resume domain %s",
vm->def->name);
+ }
+ }
+ break;
+
+ case QEMU_MIGRATION_PHASE_PERFORM3_DONE:
+ /* migration finished but we didn't have a chance to get the result
+ * of Finish3 step; third party needs to check what to do next
+ */
+ break;
+
+ case QEMU_MIGRATION_PHASE_CONFIRM3_CANCELLED:
+ /* Finish3 failed, we need to resume the domain */
+ VIR_DEBUG("Resuming domain %s after failed migration",
+ vm->def->name);
+ if (state == VIR_DOMAIN_PAUSED &&
+ (reason == VIR_DOMAIN_PAUSED_MIGRATION ||
+ reason == VIR_DOMAIN_PAUSED_UNKNOWN)) {
+ if (qemuProcessStartCPUs(driver, vm, conn,
+ VIR_DOMAIN_RUNNING_UNPAUSED) < 0) {
+ VIR_WARN("Could not resume domain %s",
vm->def->name);
+ }
+ }
+ break;
+
+ case QEMU_MIGRATION_PHASE_CONFIRM3:
+ /* migration completed, we need to kill the domain here */
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int
qemuProcessRecoverJob(struct qemud_driver *driver,
virDomainObjPtr vm,
virConnectPtr conn,
@@ -2249,7 +2355,9 @@ qemuProcessRecoverJob(struct qemud_driver *driver,
switch (job->asyncJob) {
case QEMU_ASYNC_JOB_MIGRATION_OUT:
case QEMU_ASYNC_JOB_MIGRATION_IN:
- /* we don't know what to do yet */
+ if (qemuProcessRecoverMigration(driver, vm, conn, job->asyncJob,
+ job->phase, state, reason) < 0)
+ return -1;
break;
case QEMU_ASYNC_JOB_SAVE:
--
1.7.6