[PATCH v2 05/15] qemuProcessHandleIOError: Prefer lookup by node name

[Peter Krempa <pkrempa@xxxxxxxxxx>]

When qemu reports a node name for an I/O error we should prefer the
lookup by node name instead as it gives us the path to the specific
image which caused the error instead of the top level image path.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_process.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 80a73643f0..1849f68634 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -837,22 +837,26 @@ qemuProcessHandleIOError(qemuMonitor *mon G_GNUC_UNUSED,
     const char *eventPath = "";
     const char *eventAlias = "";
     const char *eventReason = "";
-    virDomainDiskDef *disk;
+    virDomainDiskDef *disk = NULL;
+    virStorageSource *src = NULL;

     virObjectLock(vm);
     priv = QEMU_DOMAIN_PRIVATE(vm);

-    if (device)
+    if (nodename)
+        disk = qemuDomainDiskLookupByNodename(vm->def, priv->backup, nodename, &src);
+
+    if (!disk)
         disk = qemuProcessFindDomainDiskByAliasOrQOM(vm, device, NULL);
-    else if (nodename)
-        disk = qemuDomainDiskLookupByNodename(vm->def, NULL, nodename, NULL);
-    else
-        disk = NULL;

-    if (disk) {
-        eventPath = virDomainDiskGetSource(disk);
+    if (!src && disk)
+        src = disk->src;
+
+    if (disk)
         eventAlias = disk->info.alias;
-    }
+
+    if (src && src->path)
+        eventPath = src->path;

     if (nospace)
         eventReason = "enospc";
-- 
2.48.1