Could you be more specific by the phrase of "block placement decisions" what placement are you referring too? -----Original Message----- From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of Dan Smith Sent: Thursday, June 15, 2006 11:59 AM To: device-mapper development Cc: Ryan Grimm Subject: [PATCH] Add dm-userspace target This patch adds the dm-userspace target to the kernel. I have tested it successfully on both i386 and x86_64 SMP machines. The idea of dm-userspace is to export an interface for userspace control over device-mapper block placement decisions. It effectively allows device-mapper target logic to be implemented in userspace. I have a library that provides a simple record-based userspace interface for communication with a dm-userspace target, available here: http://static.danplanet.com/dm-userspace/libdmu-0.3.tar.gz The library tarball also contains an example.c, which demonstrates how to write a userspace application (in about 16 lines of actual code). I would really like feedback about the kernel module. I'm definitely willing to do whatever work is needed to make this an acceptable part of device-mapper. -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel