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fmherschel / SAPHanaSR-old-private

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Current sync mode get's lost during switchover #16

Closed fdanapfel closed 9 years ago

fdanapfel commented 9 years ago

If system replication is runnig with mode "syncmem" and a switchover occurs the sync mode is reset to "sync".

fmherschel commented 9 years ago

Yes. We need to change the recovery procedure in the resource agents for the case when exactly we have two primaries (also during sr_takeover). In this case no instance could dertermine the syncmode from hdbnsutils any more ans we should NOT change the already known mode value.

fmherschel commented 9 years ago

Unfortunately the "sync" is the value during the takeover of the former secondary :/ This means the SAP interface hdbnsutil does not report the correct value right after the begin of the takeover. This forces the SAPHanaTopology RA to mark-up the "sync" value in the attribute. Later on SAPHana takes this value from the attribute store and uses it for the registration. In sum this means we would need a more stable interface from SAP. Or we would need to implement one more workarround.

fmherschel commented 9 years ago

Do we have a new status from SAP for that one?

fdanapfel commented 9 years ago

According to latest info received from SAP the bug will be fixed with the next revisions of SAP HANA SPS9 and SPS10 (97.01 and 101). Fix will not be included in SPS8.