Mirror userspace logging

modulename: dm-log-userspace.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Multiple devices driver support (RAID and LVM)
└─>Mirror userspace logging
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
The userspace logging module provides a mechanism for
relaying the dm-dirty-log API to userspace. Log designs
which are more suited to userspace implementation (e.g.
shared storage logs) or experimental logs can be implemented
by leveraging this framework.

source code: