OSDに対するBlueStoreサイズ
| BlueStore size | |
|---|---|
| CephFS | 4% |
| Object | 4% |
| RBD | 1% |
The general recommendation is to have block.db size in between 1% to 4% of block size. For RGW workloads, it is recommended that the block.db size isn’t smaller than 4% of block, because RGW heavily uses it to store its metadata. For example, if the block size is 1TB, then block.db shouldn’t be less than 40GB. For RBD workloads, 1% to 2% of block size is usually enough.
rocksdb = 2%
waldb = 0.02%