Clarifying fault propagation between phys-virtual

A fault affecting a physical resource my affect
another physical or virtual resources. This fault correlation
shall be configurable in VIM

This patch is based on the related unresolved comment in
https://gerrit.opnfv.org/gerrit/#/c/304

JIRA: DOCTOR-4
Signed-off-by: Balazs Gibizer <balazs.gibizer@ericsson.com>
Change-Id: Ife1da03f31fc9d06bb5295157825760fc1139a36

diff --git a/requirements/03-architecture.rst b/requirements/03-architecture.rst
index fee136d..b55d5a0 100644 (file)
--- a/requirements/03-architecture.rst
+++ b/requirements/03-architecture.rst
@@ -127,9 +127,12 @@ affected by failures on the physical resources under them. Unavailability of a
 virtualized resource is determined by referring to the mapping of physical and
 virtualized resources.
 
-The relation from physical resources to virtualized resources shall be
-configurable, as the cause of unavailability of virtualized resources can be
-different in technologies and policies of deployment.
+VIM shall allow configuration of fault correlation between physical and
+virtual resources. VIM shall support correlating faults:
+
+* between a physical resource and another physical resource
+* between a physical resource and a virtual resource
+* between a virtual resource and another virtual resource
 
 Failure aggregation is also required in this feature, e.g., a user may request
 to be only notified if failures on more than two standby VMs in an (N+M)