File f3ed5c27-libxl-dont-resume-domain-on-canceled-mig.patch of Package libvirt.29828

From 35e599c4dee2ab8e7438b2cf6fcee1acc92a57b2 Mon Sep 17 00:00:00 2001
From: Jim Fehlig <jfehlig@suse.com>
Date: Tue, 11 Jul 2023 10:35:32 -0600
Subject: [PATCH 1/2] libxl: Don't attempt to resume domain on canceled
 migration
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For unknown reasons, the libxl driver attempts to resume a domain in the
confirm phase when a migration operation has been canceled. This has shown
to be problematic when simulating scenarios that result in a canceled
migration. In all scenarios, the domain was in a running state when entering
libxlDomainMigrationSrcConfirm, causing the call to libxl_domain_resume to
fail. Making matters worse, the domain state is changed to paused when in
fact it's running. And finally, libxlDomainMigrationSrcConfirm incorrectly
returns an error.

Remove this incorrect logic from libxlDomainMigrationSrcConfirm. On a
canceled migration it's sufficient to resume the lock process that was
paused in the perform phase.

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit f3ed5c27136193c59973d17447356becd1d3eda5)
---
 src/libxl/libxl_migration.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

Index: libvirt-9.0.0/src/libxl/libxl_migration.c
===================================================================
--- libvirt-9.0.0.orig/src/libxl/libxl_migration.c
+++ libvirt-9.0.0/src/libxl/libxl_migration.c
@@ -1342,7 +1342,6 @@ libxlDomainMigrationSrcConfirm(libxlDriv
     libxlDriverConfig *cfg = libxlDriverConfigGet(driver);
     libxlDomainObjPrivate *priv = vm->privateData;
     virObjectEvent *event = NULL;
-    int ret = -1;
 
     if (cancelled) {
         /* Resume lock process that was paused in MigrationSrcPerform */
@@ -1351,17 +1350,6 @@ libxlDomainMigrationSrcConfirm(libxlDriv
                                    vm,
                                    priv->lockState);
         priv->lockProcessRunning = true;
-        if (libxl_domain_resume(cfg->ctx, vm->def->id, 1, 0) == 0) {
-            ret = 0;
-        } else {
-            VIR_DEBUG("Unable to resume domain '%s' after failed migration",
-                      vm->def->name);
-            virDomainObjSetState(vm, VIR_DOMAIN_PAUSED,
-                                 VIR_DOMAIN_PAUSED_MIGRATION);
-            event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_SUSPENDED,
-                                     VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED);
-            ignore_value(virDomainObjSave(vm, driver->xmlopt, cfg->stateDir));
-        }
         goto cleanup;
     }
 
@@ -1380,12 +1368,10 @@ libxlDomainMigrationSrcConfirm(libxlDriv
     if (!vm->persistent || (flags & VIR_MIGRATE_UNDEFINE_SOURCE))
         virDomainObjListRemove(driver->domains, vm);
 
-    ret = 0;
-
  cleanup:
     /* EndJob for corresponding BeginJob in begin phase */
     virDomainObjEndJob(vm);
     virObjectEventStateQueue(driver->domainEventState, event);
     virObjectUnref(cfg);
-    return ret;
+    return 0;
 }