commit eaa2043dee8b8ada7b0b80c9b5b0b0db575a4abf
Author: Daniel P. Berrange <berrange@redhat.com>
Date:   Wed Jan 18 10:49:59 2017 +0000

    Disable use of namespaces by default
    
    When namespaces are enabled there is currently breakage when
    using disk hotplug and when using AppArmor
    
    Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

Index: libvirt-3.0.0/src/qemu/qemu_conf.c
===================================================================
--- libvirt-3.0.0.orig/src/qemu/qemu_conf.c
+++ libvirt-3.0.0/src/qemu/qemu_conf.c
@@ -317,13 +317,6 @@ virQEMUDriverConfigPtr virQEMUDriverConf
     if (!(cfg->namespaces = virBitmapNew(QEMU_DOMAIN_NS_LAST)))
         goto error;
 
-#if defined(__linux__)
-    if (privileged &&
-        virProcessNamespaceAvailable(VIR_PROCESS_NAMESPACE_MNT) == 0 &&
-        virBitmapSetBit(cfg->namespaces, QEMU_DOMAIN_NS_MOUNT) < 0)
-        goto error;
-#endif /* defined(__linux__) */
-
 #ifdef DEFAULT_LOADER_NVRAM
     if (virFirmwareParseList(DEFAULT_LOADER_NVRAM,
                              &cfg->firmwares,