Summary: Re-align SG if NodeFailover happens at quiesced assignment during 
si-swap [#1312]
Review request for Trac Ticket(s): 1312
Peer Reviewer(s): Hans N, Nagu, Praveen
Pull request to: 
Affected branch(es): 4.5, 4.6, default(4.7) 
Development branch: default(4.7)

--------------------------------
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):
---------------------------------------------
 This patch is for 4.5 branch

changeset 8b8bcfc89b497e2e84bc9bb691263ad894bbbee3
Author: Minh Hon Chau <[email protected]>
Date:   Fri, 17 Apr 2015 11:46:19 +1000

        amfd: Re-align SG if NodeFailover happens at quiesced assignment during 
si-
        swap [#1312]

        During si-swap, node-failover happens on the node which's su just 
finishes
        quiesced assignment, and su on the other node has not done active
        assignment. Then if the node comes up after reboot, SG will left as
        unstable.

        As node-failover happens, node_fail_su_oper() set the SG stable. Then 
all
        components reponse for active assignment, the susi_success() currently 
does
        nothing in SG stable state with susi modify action, so no active 
assignment
        as result. Then the standby node comes up, initiates the standby 
assignment
        but no active assignment. Therefore the SG is left as unstable at the 
end.

        Patch sets SG to re-align in node_fail_su_oper() as the other node fails
        over. At re-align state, SG currently can handle response from active
        assignment and standby assignment from the rebooted node. Note that if 
just
        leaves SG as su-oper state, once active assignment is done, the
        susi_success_su_oper() will send susi_modify for standby assignment. 
That
        could run into problem as there is no standby assignment at moment due 
to
        node reboot.


Complete diffstat:
------------------
 osaf/services/saf/amf/amfd/sg_2n_fsm.cc |  43 
++++++++++++++++++++++++++++++++++++-------
 1 files changed, 36 insertions(+), 7 deletions(-)


Testing Commands:
-----------------
 Retest with model attached to ticket in addition to inject fault during
 quiesced assignment, delay active assignment, delay node reboot during
 si-swap test


Testing, Expected Results:
--------------------------
 after node comes up, both active/standby assignment is done, be able to
 run another si-swap


Conditions of Submission:
-------------------------
 ack from reviewers


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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