Nano and Micro flavors should run really small cirros only
Guests with large memory requirements can use default flavors, so
removing the special flavor for ppc64 since new qemu requires more
memory - http://wiki.qemu.org/ChangeLog/2.4 - PowerPC.
Users should set DEFAULT_INSTANCE_TYPE to one of the default
flavors available in local.conf, as m1.tiny.
DocImpact
Change-Id: I0fd275dc7342cc2daa83e9a2bd79d30e7defa3e4
diff --git a/doc/source/configuration.rst b/doc/source/configuration.rst
index e8de7c4..8f311e0 100644
--- a/doc/source/configuration.rst
+++ b/doc/source/configuration.rst
@@ -402,6 +402,28 @@
IMAGE_URLS="http://foo.bar.com/image.qcow,"
IMAGE_URLS+="http://foo.bar.com/image2.qcow"
+
+Instance Type
+-------------
+
+``DEFAULT_INSTANCE_TYPE`` can be used to configure the default instance
+type. When this parameter is not specified, Devstack creates additional
+micro & nano flavors for really small instances to run Tempest tests.
+
+For guests with larger memory requirements, ``DEFAULT_INSTANCE_TYPE``
+should be specified in the configuration file so Tempest selects the
+default flavors instead.
+
+KVM on Power with QEMU 2.4 requires 512 MB to load the firmware -
+`QEMU 2.4 - PowerPC <http://wiki.qemu.org/ChangeLog/2.4>`__ so users
+running instances on ppc64/ppc64le can choose one of the default
+created flavors as follows:
+
+ ::
+
+ DEFAULT_INSTANCE_TYPE=m1.tiny
+
+
IP Version
----------