[libvirt PATCH v2 18/31] qemu_snapshot: move snapshot metadata reparent code

[Pavel Hrdina]

Previously the reparent happened before the actual snapshot deletion.
This change moves the code closer to the rest of the code handling
snapshot metadata when deletion happens. This makes the metadate
deletion happen after the data files are deleted.

Following patch will extract it into separate function

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
Reviewed-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_snapshot.c | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c
index 307a3deeb1..471bd184d4 100644
--- a/src/qemu/qemu_snapshot.c
+++ b/src/qemu/qemu_snapshot.c
@@ -2323,6 +2323,25 @@ qemuSnapshotDiscard(virQEMUDriver *driver,
         }
     }
 
+    if (update_parent) {
+        if (snap->nchildren) {
+            virQEMUMomentReparent rep;
+
+            rep.dir = cfg->snapshotDir;
+            rep.parent = snap->parent;
+            rep.vm = vm;
+            rep.err = 0;
+            rep.xmlopt = driver->xmlopt;
+            rep.writeMetadata = qemuDomainSnapshotWriteMetadata;
+            virDomainMomentForEachChild(snap,
+                                        qemuSnapshotChildrenReparent,
+                                        &rep);
+            if (rep.err < 0)
+                return -1;
+            virDomainMomentMoveChildren(snap, snap->parent);
+        }
+    }
+
     snapFile = g_strdup_printf("%s/%s/%s.xml", cfg->snapshotDir, vm->def->name,
                                snap->def->name);
 
@@ -2382,24 +2401,6 @@ qemuSnapshotDeleteSingle(virDomainObj *vm,
 {
     qemuDomainObjPrivate *priv = vm->privateData;
     virQEMUDriver *driver = priv->driver;
-    g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
-
-    if (snap->nchildren) {
-        virQEMUMomentReparent rep;
-
-        rep.dir = cfg->snapshotDir;
-        rep.parent = snap->parent;
-        rep.vm = vm;
-        rep.err = 0;
-        rep.xmlopt = driver->xmlopt;
-        rep.writeMetadata = qemuDomainSnapshotWriteMetadata;
-        virDomainMomentForEachChild(snap,
-                                    qemuSnapshotChildrenReparent,
-                                    &rep);
-        if (rep.err < 0)
-            return -1;
-        virDomainMomentMoveChildren(snap, snap->parent);
-    }
 
     return qemuSnapshotDiscard(driver, vm, snap, true, metadata_only);
 }
-- 
2.39.0