From: Peter Krempa <pkrempa@redhat.com>
Date: Wed, 15 Jul 2020 10:51:40 +0000 (+0200)
Subject: qemuDomainGetStorageSourceByDevstr: Look also in 'mirror' chain
X-Git-Tag: v6.6.0-rc1~41
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c52c186fdaaae3e47a6516daabf66ef31fc1bf9;p=thirdparty%2Flibvirt.git

qemuDomainGetStorageSourceByDevstr: Look also in 'mirror' chain

A disk can have a mirror, look also in its backing chain.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index dc17fa093d..1a48a9aa5b 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -11669,11 +11669,16 @@ qemuDomainGetStorageSourceByDevstr(const char *devstr,
     }
 
     if (idx == 0)
-        src = disk->src;
-    else
-        src = virStorageFileChainLookup(disk->src, NULL, NULL, idx, NULL);
+        return disk->src;
+
+    if ((src = virStorageFileChainLookup(disk->src, NULL, NULL, idx, NULL)))
+        return src;
 
-    return src;
+    if (disk->mirror &&
+        (src = virStorageFileChainLookup(disk->mirror, NULL, NULL, idx, NULL)))
+        return src;
+
+    return NULL;
 }