Hi, I deployed a multisite in order to sync data from a mimic cluster zone to a nautilus cluster zone. The data sync well at present. However, I check the cluster status and I find something strange. The data in my new cluster seems larger than that in old ones. The data is far from full synced while the space used is nearly the same. Does that normal? 'ceph df ' on old cluster: GLOBAL: SIZE AVAIL RAW USED %RAW USED 82 TiB 41 TiB 41 TiB 50.37 POOLS: NAME ID USED %USED MAX AVAIL OBJECTS .rgw.root 1 6.0 KiB 0 10 TiB 19 default.rgw.control 2 0 B 0 10 TiB 8 default.rgw.meta 3 3.5 KiB 0 10 TiB 19 default.rgw.log 4 8.4 KiB 0 10 TiB 1500 default.rgw.buckets.index 5 0 B 0 10 TiB 889 default.rgw.buckets.non-ec 6 0 B 0 10 TiB 497 default.rgw.buckets.data 7 14 TiB 56.96 10 TiB 3968545 testpool 8 0 B 0 10 TiB 0 'ceph df ' on new cluster: RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED hdd 137 TiB 98 TiB 38 TiB 38 TiB 28.02 TOTAL 137 TiB 98 TiB 38 TiB 38 TiB 28.02 POOLS: POOL ID STORED OBJECTS USED %USED MAX AVAIL .rgw.root 1 6.4 KiB 21 3.8 MiB 0 26 TiB shubei.rgw.control 13 0 B 8 0 B 0 26 TiB shubei.rgw.meta 14 4.1 KiB 20 3.2 MiB 0 26 TiB shubei.rgw.log 15 9.9 MiB 1.64k 47 MiB 0 26 TiB default.rgw.meta 16 0 B 0 0 B 0 26 TiB shubei.rgw.buckets.index 17 2.7 MiB 889 2.7 MiB 0 26 TiB shubei.rgw.buckets.data 18 11 TiB 2.90M 33 TiB 29.37 26 TiB 'radosgw-admin sync status' on new cluster: realm bde4bb56-fbca-4ef8-a979-935dbf109b78 (new-oriental) zonegroup d25ae683-cdb8-4227-be45-ebaf0aed6050 (beijing) zone 313c8244-fe4d-4d46-bf9b-0e33e46be041 (shubei) metadata sync syncing full sync: 0/64 shards incremental sync: 64/64 shards metadata is caught up with master data sync source: f70a5eb9-d88d-42fd-ab4e-d300e97094de (oldzone) syncing full sync: 106/128 shards full sync: 350 buckets to sync incremental sync: 22/128 shards data is behind on 115 shards behind shards: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,23,24,25,26,27,28,29,30,32,35,37,38,39,40,41,42,43,44,45,46,47,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,96,97,98,99,100,101,102,103,104,105,107,108,109,110,111,112,113,114,116,118,119,120,121,122,123,124,125,126,127] oldest incremental change not applied: 2020-05-11 10:46:41.0.60179s [80] 5 shards are recovering recovering shards: [21,31,95,104,106]