10:21 a.m.
It just calls migrate QMP command with resume=true without having to
worry about migration capabilities or parameters, storage migration,
etc. since everything has already been done in the normal Perform phase.
Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com>
---
src/qemu/qemu_migration.c | 110 ++++++++++++++++++++++++++++++++++++--
1 file changed, 106 insertions(+), 4 deletions(-)
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index 30c8dbd954..29be797d78 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -4857,6 +4857,51 @@ qemuMigrationSrcRun(virQEMUDriver *driver,
goto error;
}
+
+static int
+qemuMigrationSrcResume(virQEMUDriver *driver,
+ virDomainObj *vm,
+ const char *cookiein,
+ int cookieinlen,
+ char **cookieout,
+ int *cookieoutlen,
+ qemuMigrationSpec *spec)
+{
+ qemuDomainObjPrivate *priv = vm->privateData;
+ g_autoptr(qemuMigrationCookie) mig = NULL;
+ unsigned int migrateFlags = QEMU_MONITOR_MIGRATE_BACKGROUND |
+ QEMU_MONITOR_MIGRATE_RESUME;
+ int rc;
+
+ VIR_DEBUG("vm=%p", vm);
+
+ mig = qemuMigrationCookieParse(driver, vm->def, priv->origname, priv,
+ cookiein, cookieinlen,
+ QEMU_MIGRATION_COOKIE_CAPS);
+ if (!mig)
+ return -1;
+
+ if (qemuDomainObjEnterMonitorAsync(driver, vm,
+ VIR_ASYNC_JOB_MIGRATION_OUT) < 0)
+ return -1;
+
+ rc = qemuMigrationSrcStart(driver, vm, spec, migrateFlags, NULL);
+
+ qemuDomainObjExitMonitor(vm);
+ if (rc < 0)
+ return -1;
+
+ if (qemuMigrationCookieFormat(mig, driver, vm,
+ QEMU_MIGRATION_SOURCE,
+ cookieout, cookieoutlen,
+ QEMU_MIGRATION_COOKIE_STATS) < 0) {
+ VIR_WARN("Unable to encode migration cookie");
+ }
+
+ return 0;
+}
+
+
/* Perform migration using QEMU's native migrate support,
* not encrypted obviously
*/
@@ -4946,10 +4991,16 @@ qemuMigrationSrcPerformNative(virQEMUDriver *driver,
spec.fwdType = MIGRATION_FWD_DIRECT;
- ret = qemuMigrationSrcRun(driver, vm, persist_xml, cookiein, cookieinlen, cookieout,
- cookieoutlen, flags, resource, &spec, dconn,
- graphicsuri, nmigrate_disks, migrate_disks,
- migParams, nbdURI);
+ if (flags & VIR_MIGRATE_POSTCOPY_RESUME) {
+ ret = qemuMigrationSrcResume(driver, vm, cookiein, cookieinlen,
+ cookieout, cookieoutlen, &spec);
+ } else {
+ ret = qemuMigrationSrcRun(driver, vm, persist_xml, cookiein, cookieinlen,
+ cookieout, cookieoutlen, flags, resource,
+ &spec, dconn, graphicsuri,
+ nmigrate_disks, migrate_disks,
+ migParams, nbdURI);
+ }
if (spec.destType == MIGRATION_DEST_FD)
VIR_FORCE_CLOSE(spec.dest.fd.qemu);
@@ -5812,6 +5863,51 @@ qemuMigrationSrcPerformJob(virQEMUDriver *driver,
return ret;
}
+
+static int
+qemuMigrationSrcPerformResume(virQEMUDriver *driver,
+ virConnectPtr conn,
+ virDomainObj *vm,
+ const char *uri,
+ const char *cookiein,
+ int cookieinlen,
+ char **cookieout,
+ int *cookieoutlen,
+ unsigned long flags)
+{
+ int ret;
+
+ VIR_DEBUG("vm=%p, uri=%s", vm, uri);
+
+ if (!qemuMigrationAnyCanResume(vm, VIR_ASYNC_JOB_MIGRATION_OUT, flags,
+ QEMU_MIGRATION_PHASE_BEGIN_RESUME))
+ return -1;
+
+ if (qemuMigrationJobStartPhase(vm, QEMU_MIGRATION_PHASE_PERFORM_RESUME) < 0)
+ return -1;
+
+ virCloseCallbacksUnset(driver->closeCallbacks, vm,
+ qemuMigrationSrcCleanup);
+ qemuDomainCleanupRemove(vm, qemuProcessCleanupMigrationJob);
+
+ ret = qemuMigrationSrcPerformNative(driver, vm, NULL, uri,
+ cookiein, cookieinlen,
+ cookieout, cookieoutlen, flags,
+ 0, NULL, NULL, 0, NULL, NULL, NULL);
+
+ if (virCloseCallbacksSet(driver->closeCallbacks, vm, conn,
+ qemuMigrationSrcCleanup) < 0)
+ ret = -1;
+
+ if (ret < 0)
+ ignore_value(qemuMigrationJobSetPhase(vm,
QEMU_MIGRATION_PHASE_POSTCOPY_FAILED));
+
+ qemuDomainCleanupAdd(vm, qemuProcessCleanupMigrationJob);
+ qemuMigrationJobContinue(vm);
+ return ret;
+}
+
+
/*
* This implements perform phase of v3 migration protocol.
*/
@@ -5837,6 +5933,12 @@ qemuMigrationSrcPerformPhase(virQEMUDriver *driver,
qemuDomainJobPrivate *jobPriv = priv->job.privateData;
int ret = -1;
+ if (flags & VIR_MIGRATE_POSTCOPY_RESUME) {
+ return qemuMigrationSrcPerformResume(driver, conn, vm, uri,
+ cookiein, cookieinlen,
+ cookieout, cookieoutlen, flags);
+ }
+
/* If we didn't start the job in the begin phase, start it now. */
if (!(flags & VIR_MIGRATE_CHANGE_PROTECTION)) {
if (qemuMigrationJobStart(driver, vm, VIR_ASYNC_JOB_MIGRATION_OUT,
--
2.35.1