From 41c6939660d38597bda0475eacccd3980607ac17 Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Wed, 15 Jul 2020 12:36:50 +0200
Subject: [PATCH] qemuDomainDiskLookupByNodename: Look also for 'mirror' node
 names

When doing a block copy, there is another chain of images attached to a
disk. Consider them as well when looking up a disk using nodename.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 src/qemu/qemu_domain.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 2f3cfd6988..dc17fa093d 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -11608,6 +11608,14 @@ qemuDomainDiskLookupByNodename(virDomainDefPtr def,
 
             return def->disks[i];
         }
+
+        if (def->disks[i]->mirror &&
+            (tmp = virStorageSourceFindByNodeName(def->disks[i]->mirror, nodename))) {
+            if (src)
+                *src = tmp;
+
+            return def->disks[i];
+        }
     }
 
     return NULL;