[lxc-users] multiple cgroups within “blkio” susbsytem for lxc container

[manik sheeri]

I created a privileged `lxc` container on ubuntu 16.0.4LTS with name
`mk7i_container`.

When I looked at the `blkio` cgroup of `lxc`, I found the following entries:

    manik at manik:/sys/fs/cgroup/blkio/lxc$ ls -al
    total 0
    drwxr-xr-x 11 root root 0 Sep 22 13:37 .
    dr-xr-xr-x  6 root root 0 Sep 22 11:38 ..
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_merged
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_merged_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_queued
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_queued_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_service_bytes
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_service_bytes_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_serviced
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_serviced_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_service_time
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_service_time_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_wait_time
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.io_wait_time_recursive
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.leaf_weight
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.leaf_weight_device
    --w-------  1 root root 0 Sep 22 13:37 blkio.reset_stats
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.sectors
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.sectors_recursive
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.io_service_bytes
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.io_serviced
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.read_bps_device
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.read_iops_device
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.write_bps_device
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.throttle.write_iops_device
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.time
    -r--r--r--  1 root root 0 Sep 22 13:37 blkio.time_recursive
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.weight
    -rw-r--r--  1 root root 0 Sep 22 13:37 blkio.weight_device
    -rw-r--r--  1 root root 0 Sep 22 13:37 cgroup.clone_children
    -rw-r--r--  1 root root 0 Sep 22 13:37 cgroup.procs
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-1
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-2
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-3
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-4
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-5
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-6
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-7
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-8
    -rw-r--r--  1 root root 0 Sep 22 13:37 notify_on_release
    -rw-r--r--  1 root root 0 Sep 22 13:37 tasks

I don't understand where there are multiple entries for `mk7i_container`:

    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-1
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-2
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-3
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-4
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-5
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-6
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-7
    drwxr-xr-x  2 root root 0 Sep 22 13:37 mk7i_container-8


anyone know why ?
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