CEPH 相關指令

1. 確認目前POOL的統計資料
• https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/1.2.3/html/storage_strategies/show-pool-statistics
• rados df
2. 檢查POOL的複製數量設定
• https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/1.2.3/html/storage_strategies/get-pool-values
• ceph osd pool get <pool-name>  <key>
• EX-檢查複製數量：ceph osd pool get ceph-filesystem-metadata size
• EX-檢查複製最小數量：ceph osd pool get ceph-filesystem-metadata min_size
• EX-確認實際每個OSD的複製數量：ceph osd dump | grep 'replicated size'
3. 確認CEPHFS檔案分佈在哪幾個OSD
• sudo ceph osd map cephfs_data /mnt/cephfs/ubWPYCacJB0DE.img
  
• 參考資料：https://ceph.io/en/news/blog/2013/ceph-osd-where-is-my-data/
  

參考資料：

1. https://www.modb.pro/db/50697