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
