On 08-Jan-16 5:09 PM, Tony Hart wrote: > > There are no errors returned from the osaf calls, there are no error logs > generated. > > What problems would writing to the checkpoint in an AMF callback cause? Is any fault reported on the component which received the active callback? And what is the recovery policy configured for the component? In a healthy situation, when component receives callback it performs its activities and replies to AMF for using API saAmfResponse(). This response API should be invoked before the configured callback timeout value other wise AMF will generate error report on comp. Please check the syslog or amfnd tracesg for fault on component.
Thanks, Praveen > > — > tony > >> On Jan 7, 2016, at 10:23 PM, A V Mahesh <[email protected]> wrote: >> >> >> One more thing ideally writing checkpoint kind of operation are NOT >> suggested in CALLBACKs >> what exactly is your requirement ? >> >> Did error handling is done properly ? >> >> -AVM >> >> On 1/8/2016 8:49 AM, A V Mahesh wrote: >>> Hi, >>> >>>>> (so the standby code does not run until the active code is done). >>> >>> If above the sequence of checkpoint writing , you should be having >>> problem even with 40MB and higher , >>> can you please cross check any system limitation such as /dev/shm/ .. >>> ect. >>> >>> By the way which Opensaf change set you are using ? >>> >>> -AVM >>> >>> >>> On 1/8/2016 1:25 AM, Tony Hart wrote: >>>> Should also mention that this is using the synchronous API calls. >>>> >>>>> On Jan 7, 2016, at 10:55 AM, Tony Hart <[email protected]> wrote: >>>>> >>>>> OpenSAF 4.5.1 >>>>> >>>>> We’re seeing an issue where checkpoints are not syncing between two >>>>> nodes (the data in one is different from the other). There are two >>>>> separate nodes (A and B) one will have the active instance of the >>>>> process and the other the standby instance. The checkpoint is >>>>> created, opened and initialized in the active instance’s AMF ACTIVE >>>>> callback. Then the checkpoint is opened in the standby instances >>>>> AMF standby callback (so the standby code does not run until the >>>>> active code is done). >>>>> >>>>> NodeA >>>>> on_active() { >>>>> >>>>> Create a checkpoint with (SA_CKPT_WR_ALL_REPLICAS | >>>>> SA_CKPT_CHECKPOINT_COLLOCATED) >>>>> Initialize the checkpoint data (first 32 bytes is filled with a >>>>> pattern) >>>>> } >>>>> >>>>> NodeB >>>>> on_standby() { >>>>> Open the same checkpoint >>>>> Read first 32 bytes and check for fill pattern. >>>>> } >>>>> >>>>> On NodeB what we occasionally see is that the check fails, instead >>>>> of reading the fill pattern it see's zeros. It doesn’t matter how >>>>> long the checkpoint is left open we never see the fill pattern. >>>>> >>>>> Hear is a dump of the shared memory file from the two nodes. Our >>>>> data starts at 06448 (0xf33d). You can see on the standby copy that >>>>> its zero. >>>>> >>>>> Other checkpoints work fine. The difference with this one is that >>>>> its much bigger than the others ~20MB, if we increase the size of >>>>> the checkpoint to 40MB we see the failure all the time. So the >>>>> problem seems to be related to the size of the checkpoint. >>>>> >>>>> NodeA (active) >>>>> $ od -x -N 512 /dev/shm/opensaf_safCkpt\=SwitchMgr__69391_13 >>>>> 0000000 000d 0000 0000 0000 0013 6173 4366 706b >>>>> 0000020 3d74 7753 7469 6863 674d 5f72 0035 0000 >>>>> 0000040 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0000420 0009 0000 0000 0000 0020 02bc 0000 0000 >>>>> 0000440 5800 f847 000d 0000 0001 0000 0000 0000 >>>>> 0000460 0020 02bc 0000 0000 001a 0000 0000 0000 >>>>> 0000500 0004 0000 0000 0000 0000 0000 0001 0000 >>>>> 0000520 0000 0000 0101 0000 a031 bc91 0f0f 0001 >>>>> 0000540 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0000600 0000 0000 0000 0000 0000 0000 0001 0000 >>>>> 0000620 0020 02bc 0000 0000 0000 0000 0000 0000 >>>>> 0000640 7f01 568e 0000 0000 f33d b33f 0578 0000 >>>>> 0000660 8000 0000 0000 0000 0000 0000 0000 0000 >>>>> 0000700 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0001000 >>>>> >>>>> >>>>> NodeB (standby) >>>>> $ od -x -N 512 /dev/shm/opensaf_safCkpt\=SwitchMgr__69647_13 >>>>> 0000000 000d 0000 0000 0000 0013 6173 4366 706b >>>>> 0000020 3d74 7753 7469 6863 674d 5f72 0035 0000 >>>>> 0000040 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0000420 0009 0000 0000 0000 0020 02bc 0000 0000 >>>>> 0000440 5800 f847 000d 0000 0001 0000 0000 0000 >>>>> 0000460 0020 02bc 0000 0000 001a 0000 0000 0000 >>>>> 0000500 0004 0000 0000 0000 0000 0000 0001 0000 >>>>> 0000520 0000 0000 0101 0000 a031 bc91 0f0f 0001 >>>>> 0000540 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0000600 0000 0000 0000 0000 0000 0000 0001 0000 >>>>> 0000620 0000 0000 0000 0000 0000 0000 0000 0000 >>>>> * >>>>> 0001000 >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> >>>>> _______________________________________________ >>>>> Opensaf-users mailing list >>>>> [email protected] >>>>> https://lists.sourceforge.net/lists/listinfo/opensaf-users >>>> ------------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> Opensaf-users mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/opensaf-users >>> >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Opensaf-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/opensaf-users > > ------------------------------------------------------------------------------ > _______________________________________________ > Opensaf-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/opensaf-users > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. 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