[libvirt RFC 17/24] qemu_snapshot: move metadata changes to qemuSnapshotDiscardMetadata

[Pavel Hrdina <phrdina@xxxxxxxxxx>]

Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
 src/qemu/qemu_snapshot.c | 65 ++++++++++++++++++++--------------------
 1 file changed, 32 insertions(+), 33 deletions(-)

diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c
index 787186605f..591d6db39b 100644
--- a/src/qemu/qemu_snapshot.c
+++ b/src/qemu/qemu_snapshot.c
@@ -2288,6 +2288,8 @@ qemuSnapshotDiscardMetadata(virDomainObj *vm,
                             bool update_parent)
 {
     g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
+    g_autofree char *snapFile = NULL;
+    virDomainMomentObj *parentsnap = NULL;
 
     if (update_parent && snap->nchildren) {
         virQEMUMomentReparent rep;
@@ -2306,6 +2308,36 @@ qemuSnapshotDiscardMetadata(virDomainObj *vm,
         virDomainMomentMoveChildren(snap, snap->parent);
     }
 
+    snapFile = g_strdup_printf("%s/%s/%s.xml", cfg->snapshotDir, vm->def->name,
+                               snap->def->name);
+
+    if (snap == virDomainSnapshotGetCurrent(vm->snapshots)) {
+        virDomainSnapshotSetCurrent(vm->snapshots, NULL);
+        if (update_parent && snap->def->parent_name) {
+            parentsnap = virDomainSnapshotFindByName(vm->snapshots,
+                                                     snap->def->parent_name);
+            if (!parentsnap) {
+                VIR_WARN("missing parent snapshot matching name '%s'",
+                         snap->def->parent_name);
+            } else {
+                virDomainSnapshotSetCurrent(vm->snapshots, parentsnap);
+                if (qemuDomainSnapshotWriteMetadata(vm, parentsnap,
+                                                    driver->xmlopt,
+                                                    cfg->snapshotDir) < 0) {
+                    VIR_WARN("failed to set parent snapshot '%s' as current",
+                             snap->def->parent_name);
+                    virDomainSnapshotSetCurrent(vm->snapshots, NULL);
+                }
+            }
+        }
+    }
+
+    if (unlink(snapFile) < 0)
+        VIR_WARN("Failed to unlink %s", snapFile);
+    if (update_parent)
+        virDomainMomentDropParent(snap);
+    virDomainSnapshotObjListRemove(vm->snapshots, snap);
+
     return 0;
 }
 
@@ -2318,10 +2350,7 @@ qemuSnapshotDiscard(virQEMUDriver *driver,
                     bool update_parent,
                     bool metadata_only)
 {
-    g_autofree char *snapFile = NULL;
     qemuDomainObjPrivate *priv;
-    virDomainMomentObj *parentsnap = NULL;
-    g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
 
     if (!metadata_only) {
         if (!virDomainObjIsActive(vm)) {
@@ -2355,36 +2384,6 @@ qemuSnapshotDiscard(virQEMUDriver *driver,
     if (qemuSnapshotDiscardMetadata(vm, snap, driver, update_parent) < 0)
         return -1;
 
-    snapFile = g_strdup_printf("%s/%s/%s.xml", cfg->snapshotDir, vm->def->name,
-                               snap->def->name);
-
-    if (snap == virDomainSnapshotGetCurrent(vm->snapshots)) {
-        virDomainSnapshotSetCurrent(vm->snapshots, NULL);
-        if (update_parent && snap->def->parent_name) {
-            parentsnap = virDomainSnapshotFindByName(vm->snapshots,
-                                                     snap->def->parent_name);
-            if (!parentsnap) {
-                VIR_WARN("missing parent snapshot matching name '%s'",
-                         snap->def->parent_name);
-            } else {
-                virDomainSnapshotSetCurrent(vm->snapshots, parentsnap);
-                if (qemuDomainSnapshotWriteMetadata(vm, parentsnap,
-                                                    driver->xmlopt,
-                                                    cfg->snapshotDir) < 0) {
-                    VIR_WARN("failed to set parent snapshot '%s' as current",
-                             snap->def->parent_name);
-                    virDomainSnapshotSetCurrent(vm->snapshots, NULL);
-                }
-            }
-        }
-    }
-
-    if (unlink(snapFile) < 0)
-        VIR_WARN("Failed to unlink %s", snapFile);
-    if (update_parent)
-        virDomainMomentDropParent(snap);
-    virDomainSnapshotObjListRemove(vm->snapshots, snap);
-
     return 0;
 }
 
-- 
2.37.2