commit 159c254a4844289a89d8183277790b7a5814a909
author Michael Polenchuk <mpolenchuk@mirantis.com> Sat Jun 09 15:31:51 2018 +0400
committer Michael Polenchuk <mpolenchuk@mirantis.com> Wed Jun 13 11:36:26 2018 +0400
tree 6f9edab57e14a37dec3b82f8f4e836c521cf24cf
parent 4a83ddb91d144e6bb55e8b4a8ac33e1a8d62d44c

Handle nova image preallocation mode

Image preallocation allows storage to be fully allocated at instance
start. This should significantly improve performance on writes to new
blocks and may even improve I/O performance to prewritten blocks due
to reduced fragmentation.

Change-Id: Ic285d6bc07dcee65db2dffca9d2730705761121c

README.rst

diff --git a/README.rst b/README.rst
index 6d9c848..38b1b7b 100644
--- a/README.rst
+++ b/README.rst
@@ -265,6 +265,7 @@
         - hosts_with_ssd
         security_group: true
         resume_guests_state_on_host_boot: False
+        preallocate_images: space  # Default is 'none'
         my_ip: 10.1.0.16
         bind:
           vnc_address: 172.20.0.100