[PATCH 1/2] qemuBlockJobRewriteConfigDiskSource: Add debug statements when skipping disk update

[Peter Krempa <pkrempa@xxxxxxxxxx>]

It makes it easier to see what's going on when trying to figure out why
the disk definition was not updated on a finalized blockjob.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_blockjob.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c
index faf9a9fb7d..6911a2a68d 100644
--- a/src/qemu/qemu_blockjob.c
+++ b/src/qemu/qemu_blockjob.c
@@ -667,14 +667,23 @@ qemuBlockJobRewriteConfigDiskSource(virDomainObj *vm,
     g_autoptr(virStorageSource) copy = NULL;
     virStorageSource *n;

-    if (!vm->newDef)
+    if (!vm->newDef) {
+        VIR_DEBUG("not updating disk '%s' in persistent definition: no persistent definition",
+                  disk->dst);
         return;
+    }

-    if (!(persistDisk = virDomainDiskByTarget(vm->newDef, disk->dst)))
+    if (!(persistDisk = virDomainDiskByTarget(vm->newDef, disk->dst))) {
+        VIR_DEBUG("not updating disk '%s' in persistent definition: disk not present",
+                  disk->dst);
         return;
+    }

-    if (!virStorageSourceIsSameLocation(disk->src, persistDisk->src))
+    if (!virStorageSourceIsSameLocation(disk->src, persistDisk->src)) {
+        VIR_DEBUG("not updating disk '%s' in persistent definition: disk source doesn't match",
+                  disk->dst);
         return;
+    }

     if (!(copy = virStorageSourceCopy(newsrc, true)) ||
         virStorageSourceInitChainElement(copy, persistDisk->src, true) < 0) {
-- 
2.31.1