Hi Praveen, Nagu,
Thanks for reminding me this, I will add these points to PR Doc and README
In #1725 part 2 series, there's a patch that is trying to detect inappropriate
RTAs read from IMM after headless. It could happen for AdminState also since
the IMM update is queued at AMFD. Decision is still open since I'm not quite
sure how to do.
@Nagu: By the way, the pending patches are OK wih testing at your side?
Thanks,
Minh
---
** [tickets:#1725] AMF: Recover transient SUSIs left over from headless**
**Status:** fixed
**Milestone:** 5.1.FC
**Created:** Wed Apr 06, 2016 07:16 AM UTC by Minh Hon Chau
**Last Updated:** Mon Oct 24, 2016 11:54 AM UTC
**Owner:** nobody
This ticket is more likely an enhancement that targets on how AMFD detect and
recover the transients SUSI left over from headless. There are three major
situations:
(1) - Cluster goes headless, su/node failover on any payloads can happen, or
any payloads can be hard rebooted/powered off by operator, then cluster recover
(2) - issue admin op on any AMF entities, cluster goes headless. During
headless, the middle HA assignments of whole admin op sequence between AMFND
and components could be:
(2.1) The assignment completes, component returns OK with csi callback,
then cluster recover
(2.2) The assignment is under going, then cluster recover. The assignment
afterward could complete, or csi callback returns FAILED_OPERATION or error can
also happen
At the time cluster recover, amfd has collected all assignments from all
amfnd(s). These assignments can be in assigned or assigning states whilst its
HA states do not conform its SG redundancy. Any of (1) (2.1) (2.2) can happen
in a combination, which means while issuing admin op (2), cluster go headless
and any kinds of failover (1) can happen during headless.
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