Manually Flush SSD Cache
Scenario
- The Ceph pool has reached the full ratio at ~=60%, by default it will automatically flush the data into HDD pool.
- But, in some production cases, the incoming data/IO and the process of flushing data are stacked togather. It will cause a loop at 60% flushing data and accepting incoming data.
- It will create a consistent IOPS for a long period, so we must manually flush the Data with the command.
Connect to a Controller
ssh [email protected]
Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.
Password:
Flush SSD Data to HDD Pool
CLI: storage > cache > flush
controller> storage
controller:storage> cache
controller:cache> flush