Summary: amfnd: don't attempt su failover if active controller is rebooting 
[#3035]
Review request for Ticket(s): 3035
Peer Reviewer(s): Hans, Nagu, Gary
Pull request to:
Affected branch(es): develop
Development branch: ticket-3035
Base revision: d07d6f3363fae78d579bbb37366cc5b814d35f0b
Personal repository: git://git.code.sf.net/u/trguitar/review

--------------------------------
Impacted area       Impact y/n
--------------------------------
 Docs                    n
 Build system            n
 RPM/packaging           n
 Configuration files     n
 Startup scripts         n
 SAF services            y
 OpenSAF services        n
 Core libraries          n
 Samples                 n
 Tests                   n
 Other                   n


Comments (indicate scope for each "y" above):
---------------------------------------------

revision ccca425ee77df47181d7c53fec6cbccb82926de0
Author: Alex Jones <ajo...@rbbn.com>
Date:   Tue, 7 May 2019 15:24:43 -0400

amfnd: don't attempt su failover if active controller is rebooting [#3035]

In N+M model CSI-remove responses can get lost if active controller reboots.
In this case SG will be stuck in unstable state, and standby will never get
assignments.

We are the active controller, active for N+M, SU failover is set, and
failfast on termination failure is set for the nodes. If a component in the
SU crashes, and another component fails during cleanup, the node does
failfast. It currently attempts to do su failover in this case, but the
csi-remove responses from the payload can get lost because we are rebooting.
They eventually show up on the new active, but we get message-id errors.

Set a flag when the active controller is about to reboot. If the flag is set,
then don't do SU failover. Let the new active take care of the failover.



Complete diffstat:
------------------
 src/amf/amfd/node.cc   | 1 +
 src/amf/amfd/node.h    | 1 +
 src/amf/amfd/sgproc.cc | 7 +++++++
 src/amf/amfd/util.cc   | 3 +++
 4 files changed, 12 insertions(+)


Testing Commands:
-----------------
See ticket


Testing, Expected Results:
--------------------------
Standby should get assignments.

Conditions of Submission:
-------------------------
May 13, or ack from developer.

Arch      Built     Started    Linux distro
-------------------------------------------
mips        n          n
mips64      n          n
x86         n          n
x86_64      y          y
powerpc     n          n
powerpc64   n          n


Reviewer Checklist:
-------------------
[Submitters: make sure that your review doesn't trigger any checkmarks!]


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