dm: log writes target
This creates a new target that is meant for file system developers to test file
system integrity at particular points in the life of a file system. We capture
all write requests and the data and log the requests and the data to a separate
device for later replay. There is a userspace utility to do this replay. The
idea behind this is to give file system developers to verify that the file
system is always consistent. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
4 files changed
