Hi everybody, I'm having some problems to understand how to add a block device into blkio.throttle.* . Being more specific, I cannot see my block listed into blkio.throttle.io_serviced. An example... I'm running docker with a loopback device attached: $ docker run -ti --device=/dev/loop16:/dev/loop16 fedora:latest bash I can see it listed and included: $ cat /sys/fs/cgroup/blkio/docker/2db640bc7bb28a3b6bf83dd7b7c0f146b4433e3ed5dfa6899f8498f9a19c52c5/blkio.throttle.io_serviced 7:16 Read 34 7:16 Write 0 7:16 Sync 34 7:16 Async 0 7:16 Discard 0 7:16 Total 34 8:0 Read 417 8:0 Write 0 8:0 Sync 417 8:0 Async 0 8:0 Discard 0 8:0 Total 417 Total 451 But how can I add it properly into my cgroup path? I know that you need to enable block into that cgroup. But it is not working for me. It works if I reset blkio.throttle.write_bps_device and other fields: # echo 0 > /sys/fs/cgroup/blkio/mypath/blkio.throttle.write_bps_device I don't know if it is right. Does anyone know how to do it properly? Thanks! -- Julio Cesar Faracco