Hello,
I have a problem mounting cgroups on hw node (Debian Squeeze):
# mount none -t cgroup /cgroup
mount: none already mounted or /cgroup busy
It is only possible to mount perf_event and net_prio subsystems. /proc/cgroups shows that some subsystems are in use:
# cat /proc/cgroups
#subsys_name hierarchy num_cgroups enabled
cpuset 2 7 1
cpu 2 7 1
cpuacct 2 7 1
devices 3 6 1
freezer 3 6 1
net_cls 0 1 1
blkio 1 7 1
perf_event 0 1 1
net_prio 0 1 1
But there are no entries in /proc/mounts related to cgroups:
# cat /proc/mounts | grep cgroup
#
cgroup-bin daemons are disabled.
Some info about system:
# uname -a
Linux alytus 2.6.32-042stab065.3 #1 SMP Mon Nov 12 21:59:14 MSK 2012 x86_64 GNU/Linux
# cat /boot/config-2.6.32-042stab065.3 | grep CGROUP
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_CGROUP_PERF=y
CONFIG_NET_CLS_CGROUP=y
CONFIG_NETPRIO_CGROUP=y
cgroups-bin daemons are disabled so no groups are mounted upon system startup.
Maybe somebody else is also experiencing similar problems?