29 Oct
2010
29 Oct
'10
8:13 p.m.
On 10/30/2010 01:19 AM, Jean-Philippe Menil wrote: <snip>
root@redbreast:/tmp# cat /proc/15718/cgroup 1:blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,debug,cpuset:/
The problem is probably the 'blkio' controller combined with the 'ns' controller. The 'blkio' controller will refuse to allow creation of any child cgroups. This will cause the libvirt warning you see below. It will also break the 'ns' cgroup, because that *requires* that you can create child cgroups when creating a new container.
Is this the kind of thing we should a runtime check for, with appropriate warning when detected?