Creating a Storage Pool Over-Provisioning Test
During a storage pool over-provisioning test, ZFS Pool Profiling Tool first fills the storage pool with random data. It then tests the random write performance of the storage pool over several test phases, each using a different amount of over-provisioning.
For example, if a test is created with a test range of 0-20% and a test interval of 5%, ZFS Pool Profiling Tool will test pool write performance in five phases, with over-provisioning set to 0%, 5%, 10%, 15%, and 20%. If the random write performance of a disk is very low during any phase, ZFS Pool Profiling Tool will end the phase early and move to the next one.
ZFS Pool Profiling Tool creates and starts running the test. The test appears as a background task in QuTS hero.