[ceph-users] Many osds down , ceph mon has a lot of scrub logs

Hi all. My cluster has many osds down, 1 mon log has many line : 2020-06-15 18:00:22.575 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=2176495218}) 2020-06-15 18:00:22.661 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=472876490}) 2020-06-15 18:00:22.747 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=2793143323}) 2020-06-15 18:00:22.830 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=3517702147}) 2020-06-15 18:00:22.916 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=2566175247}) 2020-06-15 18:00:22.999 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=1643204334}) 2020-06-15 18:00:23.087 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=220430164}) 2020-06-15 18:00:23.170 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=1336353918}) 2020-06-15 18:00:23.296 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=2573498114}) 2020-06-15 18:00:23.421 7fa2deffe700 0 log_channel(cluster) log [DBG] : scrub ok on 0,1,2,3,4: ScrubResult(keys {osd_snap=100} crc {osd_snap=1132070786}) After 10 minutes, 1 mon and 1 mgr restart. My cluster health ok. what happened with my cluster? How i can debug this. Thanks.