Hello, I have updated my cluster from luminous to nautilus and now my cluster is working but I am seeing a weird behavior in my monitors and managers. The monitors are using a huge amount of memory and becoming very slow. The CPU usage is also very higher than it used to be. The manager keeps constantly restarting and in many opportunities it report all zero values in the pg numbers, space usage etc. I also started receiving many slow ops warning from monitors. Does any one has seen something like this? Which info do I need to send about my cluster so I can get some help from more experienced users? This is one fo the weird log messages: 2020-03-15 06:26:39.474 7f0396cae700 -1 mon.cwvh2@0(leader) e27 get_health_metrics reporting 603796 slow ops, oldest is pool_op(create unmanaged snap pool 5 tid 1236847 name v382060) cluster: id: 4ed305d4-5847-4e63-b9bb-168361cf2e81 health: HEALTH_WARN 1/3 mons down, quorum cwvh8,cwvh15 services: mon: 3 daemons, quorum (age 4M), out of quorum: cwvh2, cwvh8, cwvh15 mgr: cwvh13(active, since 33s), standbys: cwvh14 osd: 100 osds: 100 up (since 17h), 100 in data: pools: 6 pools, 4160 pgs objects: 19.35M objects, 64 TiB usage: 132 TiB used, 94 TiB / 226 TiB avail pgs: 4154 active+clean 6 active+clean+scrubbing+deep io: client: 192 MiB/s rd, 52 MiB/s wr, 1.25k op/s rd, 1.34k op/s wr [root@cwvh15 ~]# ceph df RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED backup 120 TiB 62 TiB 58 TiB 58 TiB 48.64 hdd 12 TiB 4.3 TiB 7.8 TiB 7.8 TiB 64.47 ssd 94 TiB 28 TiB 66 TiB 66 TiB 70.40 TOTAL 226 TiB 94 TiB 132 TiB 132 TiB 58.51 POOLS: POOL ID STORED OBJECTS USED %USED MAX AVAIL rbd 0 19 B 2 128 KiB 0 11 TiB CWVHDS 1 420 GiB 110.03k 848 GiB 39.36 653 GiB COMP 4 2.7 TiB 717.72k 5.5 TiB 81.19 653 GiB SSD 5 35 TiB 9.43M 66 TiB 88.08 4.4 TiB HDD 6 730 GiB 196.24k 1.4 TiB 52.84 653 GiB BKPR1 8 33 TiB 8.90M 58 TiB 56.73 22 TiB