diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 958e5a6b73..5e6e488bc6 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -1200,7 +1200,22 @@ virDomainPtr            virDomainLookupByUUID   (virConnectPtr conn,
 virDomainPtr            virDomainLookupByUUIDString     (virConnectPtr conn,
                                                         const char *uuid);
 
+typedef enum {
+    VIR_DOMAIN_SHUTDOWN_DEFAULT        = 0,        /* hypervisor choice */
+    VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN = (1 << 0), /* Send ACPI event */
+    VIR_DOMAIN_SHUTDOWN_GUEST_AGENT    = (1 << 1), /* Use guest agent */
+} virDomainShutdownFlagValues;
+
 int                     virDomainShutdown       (virDomainPtr domain);
+int                     virDomainShutdownFlags  (virDomainPtr domain,
+                                                 unsigned int flags);
+
+typedef enum {
+    VIR_DOMAIN_REBOOT_DEFAULT        = 0,        /* hypervisor choice */
+    VIR_DOMAIN_REBOOT_ACPI_POWER_BTN = (1 << 0), /* Send ACPI event */
+    VIR_DOMAIN_REBOOT_GUEST_AGENT    = (1 << 1), /* Use guest agent */
+} virDomainRebootFlagValues;
+
 int                     virDomainReboot         (virDomainPtr domain,
                                                  unsigned int flags);
 int                     virDomainReset          (virDomainPtr domain,
diff --git a/src/driver.h b/src/driver.h
index 24636a43a2..6222bed166 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -793,6 +793,10 @@ typedef int
                                   virTypedParameterPtr params,
                                   int *nparams,
                                   unsigned int flags);
+typedef int
+    (*virDrvDomainShutdownFlags)(virDomainPtr domain,
+                                 unsigned int flags);
+
 
 /**
  * _virDriver:
@@ -829,6 +833,7 @@ struct _virDriver {
     virDrvDomainSuspend		domainSuspend;
     virDrvDomainResume		domainResume;
     virDrvDomainShutdown		domainShutdown;
+    virDrvDomainShutdownFlags   domainShutdownFlags;
     virDrvDomainReboot		domainReboot;
     virDrvDomainReset       domainReset;
     virDrvDomainDestroy		domainDestroy;
diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c
index 63cdba573c..f5e1cc73d4 100644
--- a/src/esx/esx_driver.c
+++ b/src/esx/esx_driver.c
@@ -1887,7 +1887,7 @@ esxDomainResume(virDomainPtr domain)
 
 
 static int
-esxDomainShutdown(virDomainPtr domain)
+esxDomainShutdownFlags(virDomainPtr domain, unsigned int flags)
 {
     int result = -1;
     esxPrivate *priv = domain->conn->privateData;
@@ -1895,6 +1895,8 @@ esxDomainShutdown(virDomainPtr domain)
     esxVI_String *propertyNameList = NULL;
     esxVI_VirtualMachinePowerState powerState;
 
+    virCheckFlags(0, -1);
+
     if (esxVI_EnsureSession(priv->primary) < 0) {
         return -1;
     }
@@ -1928,6 +1930,12 @@ esxDomainShutdown(virDomainPtr domain)
 }
 
 
+static int
+esxDomainShutdown(virDomainPtr domain)
+{
+    return esxDomainShutdownFlags(domain, 0);
+}
+
 
 static int
 esxDomainReboot(virDomainPtr domain, unsigned int flags)
@@ -4953,6 +4961,7 @@ static virDriver esxDriver = {
     .domainSuspend = esxDomainSuspend, /* 0.7.0 */
     .domainResume = esxDomainResume, /* 0.7.0 */
     .domainShutdown = esxDomainShutdown, /* 0.7.0 */
+    .domainShutdownFlags = esxDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = esxDomainReboot, /* 0.7.0 */
     .domainDestroy = esxDomainDestroy, /* 0.7.0 */
     .domainDestroyFlags = esxDomainDestroyFlags, /* 0.9.4 */
diff --git a/src/libvirt.c b/src/libvirt.c
index 7b8adf7f18..96ad3d51df 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -3105,15 +3105,88 @@ error:
     return -1;
 }
 
+/**
+ * virDomainShutdownFlags:
+ * @domain: a domain object
+ * @flags: bitwise-OR of virDomainShutdownFlagValues
+ *
+ * Shutdown a domain, the domain object is still usable thereafter but
+ * the domain OS is being stopped. Note that the guest OS may ignore the
+ * request.  For guests that react to a shutdown request, the differences
+ * from virDomainDestroy() are that the guest's disk storage will be in a
+ * stable state rather than having the (virtual) power cord pulled, and
+ * this command returns as soon as the shutdown request is issued rather
+ * than blocking until the guest is no longer running.
+ *
+ * If the domain is transient and has any snapshot metadata (see
+ * virDomainSnapshotNum()), then that metadata will automatically
+ * be deleted when the domain quits.
+ *
+ * If @flags is set to zero, then the hypervisor will choose the
+ * method of shutdown it considers best. To have greater control
+ * pass exactly one of the virDomainShutdownFlagValues.
+ *
+ * Returns 0 in case of success and -1 in case of failure.
+ */
+int
+virDomainShutdownFlags(virDomainPtr domain, unsigned int flags)
+{
+    virConnectPtr conn;
+
+    VIR_DOMAIN_DEBUG(domain);
+
+    virResetLastError();
+
+    if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
+        virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
+        virDispatchError(NULL);
+        return -1;
+    }
+    if (domain->conn->flags & VIR_CONNECT_RO) {
+        virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+        goto error;
+    }
+
+    /* At most one of these two flags should be set.  */
+    if ((flags & VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN) &&
+        (flags & VIR_DOMAIN_SHUTDOWN_GUEST_AGENT)) {
+        virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+        goto error;
+    }
+
+    conn = domain->conn;
+
+    if (conn->driver->domainShutdownFlags) {
+        int ret;
+        ret = conn->driver->domainShutdownFlags(domain, flags);
+        if (ret < 0)
+            goto error;
+        return ret;
+    }
+
+    virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+    virDispatchError(domain->conn);
+    return -1;
+}
+
 /**
  * virDomainReboot:
  * @domain: a domain object
- * @flags: extra flags; not used yet, so callers should always pass 0
+ * @flags: bitwise-OR of virDomainRebootFlagValues
  *
  * Reboot a domain, the domain object is still usable there after but
  * the domain OS is being stopped for a restart.
  * Note that the guest OS may ignore the request.
  *
+ * If @flags is set to zero, then the hypervisor will choose the
+ * method of shutdown it considers best. To have greater control
+ * pass exactly one of the virDomainRebootFlagValues.
+ *
+ * To use guest agent (VIR_DOMAIN_REBOOT_GUEST_AGENT) the domain XML
+ * must have <channel> configured.
+ *
  * Returns 0 in case of success and -1 in case of failure.
  */
 int
@@ -3135,6 +3208,13 @@ virDomainReboot(virDomainPtr domain, unsigned int flags)
         goto error;
     }
 
+    /* At most one of these two flags should be set.  */
+    if ((flags & VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN) &&
+        (flags & VIR_DOMAIN_SHUTDOWN_GUEST_AGENT)) {
+        virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+        goto error;
+    }
+
     conn = domain->conn;
 
     if (conn->driver->domainReboot) {
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index 4ca7216573..e0cbdb448d 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -516,4 +516,8 @@ LIBVIRT_0.9.9 {
         virDomainSetNumaParameters;
 } LIBVIRT_0.9.8;
 
+LIBVIRT_0.9.10 {
+    global:
+        virDomainShutdownFlags;
+} LIBVIRT_0.9.9;
 # .... define new API here using predicted next version number ....
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index f7f45c70b7..41366e4643 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -1412,13 +1412,15 @@ cleanup:
 }
 
 static int
-libxlDomainShutdown(virDomainPtr dom)
+libxlDomainShutdownFlags(virDomainPtr dom, unsigned int flags)
 {
     libxlDriverPrivatePtr driver = dom->conn->privateData;
     virDomainObjPtr vm;
     int ret = -1;
     libxlDomainObjPrivatePtr priv;
 
+    virCheckFlags(0, -1);
+
     libxlDriverLock(driver);
     vm = virDomainFindByUUID(&driver->domains, dom->uuid);
     if (!vm) {
@@ -1455,6 +1457,13 @@ cleanup:
     return ret;
 }
 
+static int
+libxlDomainShutdown(virDomainPtr dom)
+{
+    return libxlDomainShutdownFlags(dom, 0);
+}
+
+
 static int
 libxlDomainReboot(virDomainPtr dom, unsigned int flags)
 {
@@ -3857,6 +3866,7 @@ static virDriver libxlDriver = {
     .domainSuspend = libxlDomainSuspend, /* 0.9.0 */
     .domainResume = libxlDomainResume, /* 0.9.0 */
     .domainShutdown = libxlDomainShutdown, /* 0.9.0 */
+    .domainShutdownFlags = libxlDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = libxlDomainReboot, /* 0.9.0 */
     .domainDestroy = libxlDomainDestroy, /* 0.9.0 */
     .domainDestroyFlags = libxlDomainDestroyFlags, /* 0.9.4 */
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 03bf21a903..b848a888a9 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -1693,6 +1693,7 @@ static virDriver openvzDriver = {
     .domainSuspend = openvzDomainSuspend, /* 0.8.3 */
     .domainResume = openvzDomainResume, /* 0.8.3 */
     .domainShutdown = openvzDomainShutdown, /* 0.3.1 */
+    .domainShutdownFlags = openvzDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = openvzDomainReboot, /* 0.3.1 */
     .domainDestroy = openvzDomainShutdown, /* 0.3.1 */
     .domainDestroyFlags = openvzDomainShutdownFlags, /* 0.9.4 */
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index e28840b981..f45a8feb40 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -4617,6 +4617,7 @@ static virDriver remote_driver = {
     .domainSuspend = remoteDomainSuspend, /* 0.3.0 */
     .domainResume = remoteDomainResume, /* 0.3.0 */
     .domainShutdown = remoteDomainShutdown, /* 0.3.0 */
+    .domainShutdownFlags = remoteDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = remoteDomainReboot, /* 0.3.0 */
     .domainReset = remoteDomainReset, /* 0.9.7 */
     .domainDestroy = remoteDomainDestroy, /* 0.3.0 */
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 514b0cc08c..6a20ae81d6 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -2349,6 +2349,11 @@ struct remote_node_suspend_for_duration_args {
     unsigned int flags;
 };
 
+struct remote_domain_shutdown_flags_args {
+    remote_nonnull_domain dom;
+    unsigned int flags;
+};
+
 
 /*----- Protocol. -----*/
 
@@ -2654,7 +2659,8 @@ enum remote_procedure {
     REMOTE_PROC_DOMAIN_SET_NUMA_PARAMETERS = 254, /* autogen autogen */
     REMOTE_PROC_DOMAIN_GET_NUMA_PARAMETERS = 255, /* skipgen skipgen */
     REMOTE_PROC_DOMAIN_SET_INTERFACE_PARAMETERS = 256, /* autogen autogen */
-    REMOTE_PROC_DOMAIN_GET_INTERFACE_PARAMETERS = 257 /* skipgen skipgen */
+    REMOTE_PROC_DOMAIN_GET_INTERFACE_PARAMETERS = 257, /* skipgen skipgen */
+    REMOTE_PROC_DOMAIN_SHUTDOWN_FLAGS = 258 /* autogen autogen */
 
     /*
      * Notice how the entries are grouped in sets of 10 ?
diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs
index 275831556d..430d8e4a6c 100644
--- a/src/remote_protocol-structs
+++ b/src/remote_protocol-structs
@@ -1832,6 +1832,10 @@ struct remote_node_suspend_for_duration_args {
         uint64_t                   duration;
         u_int                      flags;
 };
+struct remote_domain_shutdown_flags_args {
+        remote_nonnull_domain      dom;
+        u_int                      flags;
+};
 enum remote_procedure {
         REMOTE_PROC_OPEN = 1,
         REMOTE_PROC_CLOSE = 2,
@@ -2090,4 +2094,5 @@ enum remote_procedure {
         REMOTE_PROC_DOMAIN_GET_NUMA_PARAMETERS = 255,
         REMOTE_PROC_DOMAIN_SET_INTERFACE_PARAMETERS = 256,
         REMOTE_PROC_DOMAIN_GET_INTERFACE_PARAMETERS = 257,
+        REMOTE_PROC_DOMAIN_SHUTDOWN_FLAGS = 258,
 };
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index c0b2ca668d..55b889b148 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -1542,13 +1542,16 @@ cleanup:
     return ret;
 }
 
-static int testShutdownDomain (virDomainPtr domain)
+static int testShutdownDomainFlags(virDomainPtr domain,
+                                   unsigned int flags)
 {
     testConnPtr privconn = domain->conn->privateData;
     virDomainObjPtr privdom;
     virDomainEventPtr event = NULL;
     int ret = -1;
 
+    virCheckFlags(0, -1);
+
     testDriverLock(privconn);
     privdom = virDomainFindByName(&privconn->domains,
                                   domain->name);
@@ -1585,6 +1588,11 @@ cleanup:
     return ret;
 }
 
+static int testShutdownDomain (virDomainPtr domain)
+{
+    return testShutdownDomainFlags(domain, 0);
+}
+
 /* Similar behaviour as shutdown */
 static int testRebootDomain (virDomainPtr domain,
                              unsigned int action ATTRIBUTE_UNUSED)
@@ -5523,6 +5531,7 @@ static virDriver testDriver = {
     .domainSuspend = testPauseDomain, /* 0.1.1 */
     .domainResume = testResumeDomain, /* 0.1.1 */
     .domainShutdown = testShutdownDomain, /* 0.1.1 */
+    .domainShutdownFlags = testShutdownDomainFlags, /* 0.9.10 */
     .domainReboot = testRebootDomain, /* 0.1.1 */
     .domainDestroy = testDestroyDomain, /* 0.1.1 */
     .domainGetOSType = testGetOSType, /* 0.1.9 */
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 671216e15c..a4cf9452a7 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -1513,12 +1513,15 @@ cleanup:
 }
 
 
-static int umlDomainShutdown(virDomainPtr dom) {
+static int umlDomainShutdownFlags(virDomainPtr dom,
+                                  unsigned int flags) {
     struct uml_driver *driver = dom->conn->privateData;
     virDomainObjPtr vm;
     char *info = NULL;
     int ret = -1;
 
+    virCheckFlags(0, -1);
+
     umlDriverLock(driver);
     vm = virDomainFindByID(&driver->domains, dom->id);
     umlDriverUnlock(driver);
@@ -1544,6 +1547,11 @@ cleanup:
     return ret;
 }
 
+static int
+umlDomainShutdown(virDomainPtr dom)
+{
+    return umlDomainShutdownFlags(dom, 0);
+}
 
 static int
 umlDomainDestroyFlags(virDomainPtr dom,
@@ -2533,6 +2541,7 @@ static virDriver umlDriver = {
     .domainLookupByUUID = umlDomainLookupByUUID, /* 0.5.0 */
     .domainLookupByName = umlDomainLookupByName, /* 0.5.0 */
     .domainShutdown = umlDomainShutdown, /* 0.5.0 */
+    .domainShutdownFlags = umlDomainShutdownFlags, /* 0.9.10 */
     .domainDestroy = umlDomainDestroy, /* 0.5.0 */
     .domainDestroyFlags = umlDomainDestroyFlags, /* 0.9.4 */
     .domainGetOSType = umlDomainGetOSType, /* 0.5.0 */
diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index 22712d578b..d72043274b 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -1606,7 +1606,8 @@ cleanup:
     return ret;
 }
 
-static int vboxDomainShutdown(virDomainPtr dom) {
+static int vboxDomainShutdownFlags(virDomainPtr dom,
+                                   unsigned int flags) {
     VBOX_OBJECT_CHECK(dom->conn, int, -1);
     IMachine *machine    = NULL;
     vboxIID iid = VBOX_IID_INITIALIZER;
@@ -1615,6 +1616,8 @@ static int vboxDomainShutdown(virDomainPtr dom) {
     PRBool isAccessible  = PR_FALSE;
     nsresult rc;
 
+    virCheckFlags(0, -1);
+
     vboxIIDFromUUID(&iid, dom->uuid);
     rc = VBOX_OBJECT_GET_MACHINE(iid.value, &machine);
     if (NS_FAILED(rc)) {
@@ -1656,6 +1659,11 @@ cleanup:
     return ret;
 }
 
+static int vboxDomainShutdown(virDomainPtr dom) {
+    return vboxDomainShutdownFlags(dom, 0);
+}
+
+
 static int vboxDomainReboot(virDomainPtr dom, unsigned int flags)
 {
     VBOX_OBJECT_CHECK(dom->conn, int, -1);
@@ -9112,6 +9120,7 @@ virDriver NAME(Driver) = {
     .domainSuspend = vboxDomainSuspend, /* 0.6.3 */
     .domainResume = vboxDomainResume, /* 0.6.3 */
     .domainShutdown = vboxDomainShutdown, /* 0.6.3 */
+    .domainShutdownFlags = vboxDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = vboxDomainReboot, /* 0.6.3 */
     .domainDestroy = vboxDomainDestroy, /* 0.6.3 */
     .domainDestroyFlags = vboxDomainDestroyFlags, /* 0.9.4 */
diff --git a/src/vmware/vmware_driver.c b/src/vmware/vmware_driver.c
index a9873ba1a7..56e9d2d704 100644
--- a/src/vmware/vmware_driver.c
+++ b/src/vmware/vmware_driver.c
@@ -980,6 +980,7 @@ static virDriver vmwareDriver = {
     .domainSuspend = vmwareDomainSuspend, /* 0.8.7 */
     .domainResume = vmwareDomainResume, /* 0.8.7 */
     .domainShutdown = vmwareDomainShutdown, /* 0.8.7 */
+    .domainShutdownFlags = vmwareDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = vmwareDomainReboot, /* 0.8.7 */
     .domainDestroy = vmwareDomainShutdown, /* 0.8.7 */
     .domainDestroyFlags = vmwareDomainShutdownFlags, /* 0.9.4 */
diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 520ec03a84..12d7eb0655 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -851,20 +851,29 @@ xenUnifiedDomainResume (virDomainPtr dom)
 }
 
 static int
-xenUnifiedDomainShutdown (virDomainPtr dom)
+xenUnifiedDomainShutdownFlags(virDomainPtr dom,
+                              unsigned int flags)
 {
     GET_PRIVATE(dom->conn);
     int i;
 
+    virCheckFlags(0, -1);
+
     for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
         if (priv->opened[i] &&
             drivers[i]->xenDomainShutdown &&
-            drivers[i]->xenDomainShutdown (dom) == 0)
+            drivers[i]->xenDomainShutdown(dom) == 0)
             return 0;
 
     return -1;
 }
 
+static int
+xenUnifiedDomainShutdown(virDomainPtr dom)
+{
+    return xenUnifiedDomainShutdownFlags(dom, 0);
+}
+
 static int
 xenUnifiedDomainReboot (virDomainPtr dom, unsigned int flags)
 {
@@ -2187,6 +2196,7 @@ static virDriver xenUnifiedDriver = {
     .domainSuspend = xenUnifiedDomainSuspend, /* 0.0.3 */
     .domainResume = xenUnifiedDomainResume, /* 0.0.3 */
     .domainShutdown = xenUnifiedDomainShutdown, /* 0.0.3 */
+    .domainShutdownFlags = xenUnifiedDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = xenUnifiedDomainReboot, /* 0.1.0 */
     .domainDestroy = xenUnifiedDomainDestroy, /* 0.0.3 */
     .domainDestroyFlags = xenUnifiedDomainDestroyFlags, /* 0.9.4 */
diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c
index 78137d48a0..68017bcae9 100644
--- a/src/xenapi/xenapi_driver.c
+++ b/src/xenapi/xenapi_driver.c
@@ -783,12 +783,15 @@ xenapiDomainResume (virDomainPtr dom)
  * Returns 0 on success or -1 in case of error
  */
 static int
-xenapiDomainShutdown (virDomainPtr dom)
+xenapiDomainShutdownFlags(virDomainPtr dom, unsigned int flags)
 {
     /* vm.clean_shutdown */
     xen_vm vm;
     xen_vm_set *vms;
     xen_session *session = ((struct _xenapiPrivate *)(dom->conn->privateData))->session;
+
+    virCheckFlags(0, -1);
+
     if (xen_vm_get_by_name_label(session, &vms, dom->name) && vms->size > 0) {
         if (vms->size != 1) {
             xenapiSessionErrorHandler(dom->conn, VIR_ERR_INTERNAL_ERROR,
@@ -811,6 +814,12 @@ xenapiDomainShutdown (virDomainPtr dom)
     return -1;
 }
 
+static int
+xenapiDomainShutdown(virDomainPtr dom)
+{
+    return xenapiDomainShutdownFlags(dom, 0);
+}
+
 /*
  * xenapiDomainReboot
  *
@@ -1928,6 +1937,7 @@ static virDriver xenapiDriver = {
     .domainSuspend = xenapiDomainSuspend, /* 0.8.0 */
     .domainResume = xenapiDomainResume, /* 0.8.0 */
     .domainShutdown = xenapiDomainShutdown, /* 0.8.0 */
+    .domainShutdownFlags = xenapiDomainShutdownFlags, /* 0.9.10 */
     .domainReboot = xenapiDomainReboot, /* 0.8.0 */
     .domainDestroy = xenapiDomainDestroy, /* 0.8.0 */
     .domainDestroyFlags = xenapiDomainDestroyFlags, /* 0.9.4 */