root@ceph-mon1:~# grep 5.15b /var/log/ceph/ceph.log
2016-09-06 09:20:44.461347 osd.15 172.27.175.6:6808/76618 875 : cluster [INF] 5.15b deep-scrub starts
2016-09-06 09:20:47.900860 osd.15 172.27.175.6:6808/76618 876 : cluster [ERR] 5.15b shard 15: soid 5:da88df70:::10002639d84.00000000:head omap_digest 0x4449b5bf != best guess omap_digest 0xc90b63fc from auth shard 1
2016-09-06 09:20:47.900864 osd.15 172.27.175.6:6808/76618 877 : cluster [ERR] 5.15b shard 34: soid 5:da88df70:::10002639d84.00000000:head omap_digest 0x4449b5bf != best guess omap_digest 0xc90b63fc from auth shard 1
2016-09-06 09:21:22.947438 osd.15 172.27.175.6:6808/76618 878 : cluster [ERR] 5.15b deep-scrub 0 missing, 1 inconsistent objects
2016-09-06 09:21:22.947442 osd.15 172.27.175.6:6808/76618 879 : cluster [ERR] 5.15b deep-scrub 2 errors
root@ceph-mon1:~#