[libvirt] [PATCHv2] qemu: min_guarantee: Parameter 'min_guarantee' not supported

[Erik Skultety]

The 'min_guarantee' is used by VMware ESX and OpenVZ drivers,
with qemu however, libvirt should report error when starting a domain,
because this element is not used.
Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1122455
---
 docs/formatdomain.html.in | 3 ++-
 src/qemu/qemu_process.c   | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index bd99ae0..eacf8db 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -713,7 +713,8 @@
       <dt><code>min_guarantee</code></dt>
       <dd> The optional <code>min_guarantee</code> element is the guaranteed
         minimum memory allocation for the guest. The units for this value are
-        kibibytes (i.e. blocks of 1024 bytes)</dd>
+        kibibytes (i.e. blocks of 1024 bytes). This element is only supported
+        by VMware ESX and OpenVZ drivers.</dd>
     </dl>
 
 
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 9e6a9ae..39cce7c 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3993,6 +3993,13 @@ int qemuProcessStart(virConnectPtr conn,
                                     flags & VIR_QEMU_PROCESS_START_COLD) < 0)
         goto cleanup;
 
+    if (vm->def->mem.min_guarantee) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("Parameter 'min_guarantee' "
+                         "not supported by QEMU."));
+        goto cleanup;
+    }
+
     if (VIR_ALLOC(priv->monConfig) < 0)
         goto cleanup;
 
-- 
1.9.3