Hi Praveen,
Although part 2 #1725 is pushed, there is a chance that both
avd_sg_su_si_mod_snd() and avd_susi_mod_send() are updating this attribute
differently. To avoid backward incompatibility in future, I would like to
document that reading saAmfSISUState while assignment is ongoing not
recommended/supported. User should only read this attribute if admin
operation/failover completes. Do you agree?
Thanks,
Minh
---
** [tickets:#2134] AMF: Update RTA saAmfSISUHAState to IMM**
**Status:** wontfix
**Milestone:** never
**Created:** Thu Oct 20, 2016 07:58 PM UTC by Minh Hon Chau
**Last Updated:** Thu Nov 24, 2016 05:25 AM UTC
**Owner:** nobody
In scenario of 2N Si-swap, when AMFD sends QUIESCED su_si assignment msg (for
example) to AMFND that changes the HA State of SUSI assignment, AMFD updates
its local state AVD_SU_SI_REL::state, checkpoint this change to standby AMFD.
However, AMFD does not updates saAmfSISUHAState untill receiving su_si
assignment response. Question:
(1). Whether AMFD should update the runtime attribute saAmfSISUHAState to IMM
as long as local @state gets updated in implementer; to make IMM, active AMFD,
standby AMFD all are synced
(2). Or AMFD updates saAmfSISUHAState to IMM only if AMFD receives su_si
assignment from AMFND, as it has been implemented currently for some reason
(not expose the change of saAmfSISUHAState to user too early?)
grep "avd_susi_update" which updates saAmfSISUHAState to IMM, there is also an
inconsistency in usage. For avd_susi_mod_send() sends su_si msg and also
updates saAmfSISUHAState immediately, while avd_sg_su_si_mod_snd does
otherwise.
Since the headless recovery relies on IMM to restore the state. If
saAmfSISUHAState is not updated punctually and the node is reboot during
headless stage, so after headless saAmfSISUHAState read from IMM does not fit
with many other states (SG fsm, SUSI fsm, saAmfSISUHAState of the other SUSIs).
My question is if doing (1) will cause any problem for normal cluster? Pending
patches #1725 part 2 currently implement (1).
---
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