Also note there are a lot of objects in this PG that are similarly affected:
$ grep ERR remote/*/log/*osd.3*
2019-06-19T18:37:00.923+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c54cd850:::smithi15416397-271:68 snaps missing in mapper, should be: 65,67 was r -2...repaired
2019-06-19T18:37:00.923+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c54cd850:::smithi15416397-271:46 snaps missing in mapper, should be: 3b,3c,3e,3f,41,43,45,46 was r -2...repaired
2019-06-19T18:37:00.924+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c54cd850:::smithi15416397-271:d snaps missing in mapper, should be: 8,b,c,d was r -2...repaired
2019-06-19T18:37:00.924+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c281eb34:::smithi15416397-389:62 snaps missing in mapper, should be: 5e,62 was r -2...repaired
2019-06-19T18:37:00.924+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c262d77f:::smithi15416397-345:35 snaps missing in mapper, should be: 23,2e,30,33,34,35 was r -2...repaired
2019-06-19T18:37:00.928+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c5d5d72d:::smithi15416397-343:5b snaps missing in mapper, should be: 4e,51,55,59,5a,5b was r -2...repaired
2019-06-19T18:37:00.928+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c5d5d72d:::smithi15416397-343:26 snaps missing in mapper, should be: 25 was r -2...repaired
2019-06-19T18:37:00.929+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:c5d5d72d:::smithi15416397-343:23 snaps missing in mapper, should be: 1e,20,21,22,23 was r -2...repaired
2019-06-19T18:37:00.934+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d3da0cf0:::smithi15416397-130:67 snaps missing in mapper, should be: 65,66,67 was r -2...repaired
2019-06-19T18:37:00.934+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d27dc6ae:::smithi15416397-36:5b snaps missing in mapper, should be: 4e,51,55,59,5b was r -2...repaired
2019-06-19T18:37:00.934+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d2759381:::smithi15416397-410:36 snaps missing in mapper, should be: 23,2e,30,33,34,35,36 was r -2...repaired
2019-06-19T18:37:00.934+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d2759381:::smithi15416397-410:19 snaps missing in mapper, should be: f,12,15,17,18,19 was r -2...repaired
2019-06-19T18:37:00.939+0000 7f0a5d4ec700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d540feb8:::smithi15416397-480:27 snaps missing in mapper, should be: 20,21,23,25,27 was r -2...repaired
2019-06-19T18:37:00.942+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:df97c111:::smithi15416397-177:6f snaps missing in mapper, should be: 6f was r -2...repaired
2019-06-19T18:37:00.942+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:df958ce8:::smithi15416397-173:64 snaps missing in mapper, should be: 63,64 was r -2...repaired
2019-06-19T18:37:00.942+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:df958ce8:::smithi15416397-173:37 snaps missing in mapper, should be: 23,2e,30,33,34,35,36,37 was r -2...repaired
2019-06-19T18:37:00.943+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:d9fe434e:::smithi15416397-351:6e snaps missing in mapper, should be: 6c,6e was r -2...repaired
2019-06-19T18:37:00.950+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:e919df42:::smithi15416397-493:47 snaps missing in mapper, should be: 3f,43,45,46,47 was r -2...repaired
2019-06-19T18:37:00.950+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:e919df42:::smithi15416397-493:39 snaps missing in mapper, should be: 2e,33,36,38,39 was r -2...repaired
2019-06-19T18:37:00.950+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:e919df42:::smithi15416397-493:2a snaps missing in mapper, should be: 23,28,29,2a was r -2...repaired
2019-06-19T18:37:00.950+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:e8966df2:::smithi15416397-279:43 snaps missing in mapper, should be: 38,3b,3c,3e,3f,41,43 was r -2...repaired
2019-06-19T18:37:00.954+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:e984d006:::smithi15416397-112:61 snaps missing in mapper, should be: 5e,5f,60,61 was r -2...repaired
2019-06-19T18:37:00.962+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:f739dbfb:::smithi15416397-443:4b snaps missing in mapper, should be: 45,47,48,49,4a,4b was r -2...repaired
2019-06-19T18:37:00.963+0000 7f0a594e4700 -1 log_channel(cluster) log [ERR] : osd.3 found snap mapper error on pg 2.3 oid 2:f629205d:::smithi15416397-5:58 snaps missing in mapper, should be: 4a,4b,4c,4e,51,52,55,57,58 was r -2...repaired