From 199d17de325b67c86cd65a31fe0e7e58fd158e37 Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Tue, 29 Sep 2015 18:13:06 +0200
Subject: [PATCH] qemu: Perform the disk WWN check only on fresh starts

Since we'd disallow migration of a guest that would have possibly
invalid config but still be able to work, relax the WWN check to be
performed only on new starts of the VM.
---
 src/qemu/qemu_process.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index f2586a1832..9c107bd528 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -4628,7 +4628,8 @@ int qemuProcessStart(virConnectPtr conn,
             goto cleanup;
     }
 
-    if (virDomainDefCheckDuplicateDiskWWN(vm->def) < 0)
+    if (!migrateFrom && !snapshot &&
+        virDomainDefCheckDuplicateDiskWWN(vm->def) < 0)
         goto cleanup;
 
     /* "volume" type disk's source must be translated before