clickhouse备份目录大小疑惑

环境

OS:Centos 7

clickhouse:24.8.11.5

创建备份
clickhouse-backup create mybak20250123 --config=/etc/clickhouse-backup/config.yml
查看备份目录占用空间大小,这里显示76k,但是进入到具体的备份文件目录显示上16GB

[root@localhost data]# du -h ./ --max-depth=1
92K     ./preprocessed_configs
0       ./flags
0       ./dictionaries_lib
0       ./user_scripts
0       ./data
20K     ./metadata
0       ./metadata_dropped
17G     ./store
0       ./cores
76K     ./backup
4.0K    ./shadow
17G     ./

进入到备份的具体目录查看占用大小

[root@localhost backup]# du -h ./ --max-depth=1
16G     ./mybak20250123
16G     ./