diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 221e1d0a25..8d80f3b017 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -11265,6 +11265,22 @@ virDomainControllerDefFormat(virBufferPtr buf,
     return 0;
 }
 
+
+int
+virDomainFSIndexByName(virDomainDefPtr def, const char *name)
+{
+    virDomainFSDefPtr fs;
+    int i;
+
+    for (i = 0; i < def->nfss; i++) {
+        fs = def->fss[i];
+        if (STREQ(fs->dst, name))
+            return i;
+    }
+    return -1;
+}
+
+
 static int
 virDomainFSDefFormat(virBufferPtr buf,
                      virDomainFSDefPtr def,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 8d5b35a2b2..d627ad82e8 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2085,6 +2085,7 @@ int virDiskNameToBusDeviceIndex(virDomainDiskDefPtr disk,
                                 int *devIdx);
 
 virDomainFSDefPtr virDomainGetRootFilesystem(virDomainDefPtr def);
+int virDomainFSIndexByName(virDomainDefPtr def, const char *name);
 int virDomainVideoDefaultType(virDomainDefPtr def);
 int virDomainVideoDefaultRAM(virDomainDefPtr def, int type);
 
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index ef8047d75d..ea0e59b659 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -320,6 +320,7 @@ virDomainDiskSnapshotTypeToString;
 virDomainDiskTypeFromString;
 virDomainDiskTypeToString;
 virDomainFSDefFree;
+virDomainFSIndexByName;
 virDomainFSTypeFromString;
 virDomainFSTypeToString;
 virDomainFSWrpolicyTypeFromString;