- **status**: assigned --> review
---
** [tickets:#2436] amfnd: Buffered messages are unexpectedly deleted during SC
Absence period**
**Status:** review
**Milestone:** 5.17.06
**Created:** Mon Apr 24, 2017 10:58 AM UTC by Minh Hon Chau
**Last Updated:** Mon Apr 24, 2017 10:58 AM UTC
**Owner:** Minh Hon Chau
Stop both SCs so that cluster goes into headless. Trigger a su failover, so
su_oper message is buffered and supposedly will be sent to active amfd when SC
comes back. However, if cluster is waiting up to 3 mins, which is exactly the
MDS_AWAIT_ACTIVE_TMR_VAL timeout, amfnd will receive another NCSMDS_DOWN. At
this time, amfnd will delete all pending messages, which causes the headless
recovery impossible.
Some outline logs:
~~~
Apr 18 16:49:09.749428 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0603] >> avnd_evt_mds_avd_dn_evh
Apr 18 16:49:09.750094 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0618] WA AMF director
unexpectedly crashed
Apr 18 16:49:09.750103 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0662] TR Delete all pending
messages to be sent to AMFD
Apr 18 16:49:09.796138 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0756] NO avnd_di_oper_send()
deferred as AMF director is offline(1), or sync is required(1)
Apr 18 16:49:09.797440 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0756] NO avnd_di_oper_send()
deferred as AMF director is offline(1), or sync is required(1)
Apr 18 16:52:09.825457 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0603] >> avnd_evt_mds_avd_dn_evh
Apr 18 16:52:09.825489 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0618] WA AMF director
unexpectedly crashed
Apr 18 16:52:09.825495 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:0662] TR Delete all pending
messages to be sent to AMFD
Apr 18 16:52:09.825498 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:1273] >> avnd_diq_rec_del
Apr 18 16:52:09.825505 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:1290] << avnd_diq_rec_del
Apr 18 16:52:09.825508 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:1273] >> avnd_diq_rec_del
Apr 18 16:52:09.825512 osafamfnd
[10775:10775:../../opensaf/src/amf/amfnd/di.cc:1290] << avnd_diq_rec_del
~~~
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