ZStone Cache Disk Data Flush

Scenario

• Product: ZCF
• Component: ZStone
• Version: 4.2.x
• Trigger: Cache-disk data usage is high and affects cloud-volume write throughput, so cached data must be flushed to disks.

Symptoms

• Cache-disk data is highly accumulated in a ZStone 4.2.x environment.
• Cloud-volume write throughput is affected.
• A flush must be performed on storage hosts to write cached data to disks.

Assessment

1. Check the storage version and ZStone service status.
2. Monitor ceph -s