With cgroup v2, the location of the pids.max file changed and so did the
/proc/self/cgroup file
new /proc/self/cgroup file
`
0::/user.slice/user-500.slice/session-14.scope
`
old file:
`
11:pids:/user.slice/user-500.slice/session-2.scope
10:blkio:/user.slice
9:net_cls,net_prio:/
8:perf_event:/
...
`
There is no directory per subsystem (e.g. /sys/fs/cgroup/pids) any more, all
files are now in one directory.
fixes: https://github.com/ceph/ceph-csi/issues/3085
Signed-off-by: Marcus Röder <m.roeder@yieldlab.de>