From c50cae68f0d083ad0c5ffcf85908cc62eeaa866d Mon Sep 17 00:00:00 2001
Message-Id: <c50cae68f0d083ad0c5ffcf85908cc62eeaa866d@dist-git>
From: Jiri Denemark <jdenemar@redhat.com>
Date: Tue, 19 Jul 2022 13:48:44 +0200
Subject: [PATCH] qemu_migration: Store original migration params in status XML

We keep original values of migration parameters so that we can restore
them at the end of migration to make sure later migration does not use
some random values. However, this does not really work when libvirt
daemon is restarted on the source host because we failed to explicitly
save the status XML after getting the migration parameters from QEMU.
Actually it might work if the status XML is written later for some other
reason such as domain state change, but that's not how it should work.

https://bugzilla.redhat.com/show_bug.cgi?id=2107892

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
(cherry picked from commit c7238941357f0d2e94524cf8c5ad7d9c82dcf2f9)
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
---
 src/qemu/qemu_migration.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index 8a2f5b09a1..9289df81eb 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -3245,6 +3245,9 @@ qemuMigrationDstPrepareActive(virQEMUDriver *driver,
                                  migParams, mig->caps->automatic) < 0)
         goto error;
 
+    /* Save original migration parameters */
+    qemuDomainSaveStatus(vm);
+
     /* Migrations using TLS need to add the "tls-creds-x509" object and
      * set the migration TLS parameters */
     if (flags & VIR_MIGRATE_TLS) {
@@ -4822,6 +4825,9 @@ qemuMigrationSrcRun(virQEMUDriver *driver,
                                  migParams, mig->caps->automatic) < 0)
         goto error;
 
+    /* Save original migration parameters */
+    qemuDomainSaveStatus(vm);
+
     if (flags & VIR_MIGRATE_TLS) {
         const char *hostname = NULL;
 
-- 
2.35.1