How to use cgroups with pve?

[udo]

Hi,
I'm tracking down an issue on a numa system and need cgroups for that.

But on the pve-host I can't mount the cgroups:

mkdir /cgroup
mount -t cgroup netdev /cgroup
mount: netdev already mounted or /cgroup busy
mount -t cgroup none /cgroup
mount: none already mounted or /cgroup busy

On a normal squeeze work the mount without trouble.

I'm happy, if someone can give me any hints!

Udo

 

[e100]

The issue is likely because they are in use elsewhere, just not sure what is using them so maybe these items will lead to an answer:

cat /proc/mounts:

beancounter /proc/vz/beancounter [B]cgroup[/B] rw,relatime,blkio,name=beancounter 0 0
container /proc/vz/container [B]cgroup[/B] rw,relatime,freezer,devices,name=container 0 0
fairsched /proc/vz/fairsched [B]cgroup[/B] rw,relatime,cpuacct,cpu,cpuset,name=fairsched 0 0

cat /proc/cgroups

#subsys_name    hierarchy       [B]num_cgroups[/B]     enabled
cpuset  2       2       1
cpu     2       2       1
cpuacct 2       2       1
devices 3       1       1
freezer 3       1       1
net_cls 0       1       1
blkio   1       2       1
[B]perf_event      0       1       1[/B]

 

[udo]

Hi e100,
thanks a lot - i use mount to see if it's allready mounted, but it was too late and i'm not reconiced the lines.

cgroups worked now, but unfortunality it's doesn't help for my performance issue...

Udo