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This is documentation for Cube.COS 2.2, which is no longer actively maintained.

For up-to-date documentation, see the latest version (2.5).

Version: 2.2

Manually flush SSD cache

This article describes the following topics#

Ceph pool has reach the full ratio at ~=60%, by default it will automatically flush the data into HDD pool.
But, in some production case, 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 command.

Connect to console#

$ ssh [email protected]Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.Password:

Flush SSD data to HDD pool: `storage > cache > flush`#

Welcome to the Cube ApplianceEnter "help" for a list of available commandscontroller> storagecontroller:storage> cachecontroller:cache> flush

This article describes the following topics
Connect to console
Flush SSD data to HDD pool: storage > cache > flush