#1788 cpsv: saCkptCheckpointWrite() returns SA_AIS_ERR_NOT_EXIST after headless state

[Pham Hoang Nhat]

The problem happened in the following scenario:

1. Application calls saCkptCheckpointOpen() to create a collocated checkpoint on SC-2. Replica of the checkpoint on SC-2 is active
2. Application calls saCkptCheckpointOpen() to open a collocated checkpoint on PL-5.
3. Application creates section and accesses the checkpoint on PL-5.
4. Both SCs are down.
5. Both SCs are up again.
6. Application accesses the checkpoint with saCkptCheckpointWrite(). The fault code SA_AIS_ERR_NOT_EXIST is return.

This problem happened because the osafckptnd process ID on SC-2 before headless and after headless are same. This leads their MDS destination are same. Thus when the SC-2 is up and in short time when CPD hadn't been assigned a new active replica, the application send checkpoint access request to CPND on SC-2 which no longer hosts the active replica. Then it returns SA_AIS_ERR_NOT_EXIST.

[A V Mahesh (AVM)]

changeset: 8036:62fe50517eaf
user: Hoang Vo hoang.m.vo@dektech.com.au
date: Fri Sep 09 15:00:35 2016 +0530
summary: cpd: To reduce updating time out [#1788]

changeset: 8037:435ec42e4847
branch: opensaf-5.1.x
parent: 8034:4d1aef39599a
user: Hoang Vo hoang.m.vo@dektech.com.au
date: Fri Sep 09 15:01:23 2016 +0530
summary: cpd: To reduce updating time out [#1788]

changeset: 8038:bc1bac48177a
branch: opensaf-5.0.x
tag: tip
parent: 8027:bc9afc86a424
user: Hoang Vo hoang.m.vo@dektech.com.au
date: Fri Sep 09 15:02:40 2016 +0530
summary: cpd: To reduce updating time out [#1788]