On Thu, 15 Jan 2009, Allen Jack wrote: > I have used the ioctl interface to create dm objects and get information > about dm objects from a user space application, and am familiar with it. > I am now required to get the object information from kernel space, and > was wondering what interface is available to do that directly. > > Is there a direct device mapper interface in kernel space that I can use > to get the object information from? For example, I need to see the > target mappings within a linear object. > > Allen Jack > Sr. Software Engineer > ajack@xxxxxxxxxx > (801) 861-5923 > Novell, Inc. > Making IT Work As One > www.novell.com Hi You can call the same ioctls from kernel space as well, see ioctl_by_bdev. Calling device mapper functions defined in <linux/device-mapper.h> directly is discouraged if you are not developing dm target driver. Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
