Hello, I'm looking for the same feature as Bernd (http://www.redhat.com/archives/dm-devel/2006-February/msg00014.html), for different purpose: We need to slow down a disk access to be able to monitor some events, for testing. There is already a dm-error (faulty.c) to simulate a defective device, why not a dm-slow for a slow device ? I have written yet a simple unix filter to slow transfer but it can be used only in specific cases. In the same way dm-slow would accept a bandwidth parameter to limit read/write speed. Maybe it could also be changed after the device setup ( slow down speed, and then resume to full speed once finished monitoring ). I thought that making a fork from dm-linear or dm-error would be a good start, since I'm completly new to kernel devel. I just wonder if my idea isn't flawed by a misunderstanding of the general dm framework ? Do you have any comment on this idea, or some advice ? Thank you, David G.M. PS: this is a text-only repost, previous mail maybe caught by anti-spam -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
