Which kernel module enables deduplication on a storage device when VDO driver is installed?

The module responsible for enabling deduplication on a storage device when the VDO (Virtual Data Optimizer) driver is installed is the "vdo" module. This module provides the functionality necessary for efficient data storage management, reducing space consumption through deduplication, compression, and thin provisioning.

The vdo module allows the storage system to recognize duplicate data blocks and only store a single copy, thereby optimizing storage usage. This is particularly useful in environments where large amounts of similar data are stored, such as databases or application logs.

While kvdo and kmod-uds may relate to different virtualization or user data services, they do not specifically pertain to the core functionalities of VDO in deduplicating data. The uds module is also not primarily focused on storage deduplication but rather on user data services, which is why it does not enable the expected functionalities provided by the VDO system.