[Devel] Re: lxc-start: Device or resource busy - failed to remove previous cgroup

[Dwight Schauer]

On Mon, Jan 4, 2010 at 12:02 PM, Serge E. Hallyn <serue at us.ibm.com> wrote:
> Quoting Dwight Schauer (dschauer at gmail.com):
>> On Mon, Jan 4, 2010 at 4:40 AM, Daniel Lezcano <daniel.lezcano at free.fr> wrote:
>> > Did you check the file /cgroup/<name>/tasks is empty ? it's probably a dumb
>> > question, but just in case :)
>> >
>>
>> Ok, since this is easy enough to reproduce, I got it into this state again.
>>
>> $ cat /cgroup/arch64-1/tasks
>> $
>>
>> it is empty
>
> And there are no subdirectories?  What does the output of
>        ls -laFZ /cgroup/arch64-1 look like?
>

well, tasks is empty.

$ sudo ls -lRaFZ /cgroup/arch64-1
/cgroup/arch64-1:
total 0
drwxr-xr-x 6 root root  ? 0 Jan  3 21:04 ./
drwxr-xr-x 9 root root  ? 0 Jan  3 21:04 ../
drwxr-xr-x 2 root users ? 0 Jan  3 21:05 102/
drwxr-xr-x 2 root users ? 0 Jan  4 02:31 26533/
drwxr-xr-x 2 root users ? 0 Jan  4 07:24 26627/
drwxr-xr-x 2 root users ? 0 Jan  4 07:24 26668/
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpu.shares
-r--r--r-- 1 root root  ? 0 Jan  3 21:04 cpuacct.stat
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuacct.usage
-r--r--r-- 1 root root  ? 0 Jan  3 21:04 cpuacct.usage_percpu
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.cpu_exclusive
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.cpus
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.mem_exclusive
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.mem_hardwall
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.memory_migrate
-r--r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.memory_pressure
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.memory_spread_page
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.memory_spread_slab
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.mems
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.sched_load_balance
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 cpuset.sched_relax_domain_level
--w------- 1 root root  ? 0 Jan  3 21:04 devices.allow
--w------- 1 root root  ? 0 Jan  3 21:04 devices.deny
-r--r--r-- 1 root root  ? 0 Jan  3 21:04 devices.list
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 freezer.state
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 net_cls.classid
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 notify_on_release
-rw-r--r-- 1 root root  ? 0 Jan  3 21:04 tasks

/cgroup/arch64-1/102:
total 0
drwxr-xr-x 2 root users ? 0 Jan  3 21:05 ./
drwxr-xr-x 6 root root  ? 0 Jan  3 21:04 ../
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpu.shares
-r--r--r-- 1 root users ? 0 Jan  3 21:05 cpuacct.stat
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuacct.usage
-r--r--r-- 1 root users ? 0 Jan  3 21:05 cpuacct.usage_percpu
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.cpu_exclusive
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.cpus
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.mem_exclusive
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.mem_hardwall
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.memory_migrate
-r--r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.memory_pressure
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.memory_spread_page
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.memory_spread_slab
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.mems
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.sched_load_balance
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 cpuset.sched_relax_domain_level
--w------- 1 root users ? 0 Jan  3 21:05 devices.allow
--w------- 1 root users ? 0 Jan  3 21:05 devices.deny
-r--r--r-- 1 root users ? 0 Jan  3 21:05 devices.list
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 freezer.state
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 net_cls.classid
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 notify_on_release
-rw-r--r-- 1 root users ? 0 Jan  3 21:05 tasks

/cgroup/arch64-1/26533:
total 0
drwxr-xr-x 2 root users ? 0 Jan  4 02:31 ./
drwxr-xr-x 6 root root  ? 0 Jan  3 21:04 ../
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpu.shares
-r--r--r-- 1 root users ? 0 Jan  4 02:31 cpuacct.stat
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuacct.usage
-r--r--r-- 1 root users ? 0 Jan  4 02:31 cpuacct.usage_percpu
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.cpu_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.cpus
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.mem_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.mem_hardwall
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.memory_migrate
-r--r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.memory_pressure
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.memory_spread_page
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.memory_spread_slab
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.mems
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.sched_load_balance
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 cpuset.sched_relax_domain_level
--w------- 1 root users ? 0 Jan  4 02:31 devices.allow
--w------- 1 root users ? 0 Jan  4 02:31 devices.deny
-r--r--r-- 1 root users ? 0 Jan  4 02:31 devices.list
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 freezer.state
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 net_cls.classid
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 notify_on_release
-rw-r--r-- 1 root users ? 0 Jan  4 02:31 tasks

/cgroup/arch64-1/26627:
total 0
drwxr-xr-x 2 root users ? 0 Jan  4 07:24 ./
drwxr-xr-x 6 root root  ? 0 Jan  3 21:04 ../
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpu.shares
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.stat
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.usage
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.usage_percpu
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.cpu_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.cpus
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mem_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mem_hardwall
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_migrate
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_pressure
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_spread_page
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_spread_slab
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mems
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.sched_load_balance
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.sched_relax_domain_level
--w------- 1 root users ? 0 Jan  4 07:24 devices.allow
--w------- 1 root users ? 0 Jan  4 07:24 devices.deny
-r--r--r-- 1 root users ? 0 Jan  4 07:24 devices.list
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 freezer.state
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 net_cls.classid
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 notify_on_release
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 tasks

/cgroup/arch64-1/26668:
total 0
drwxr-xr-x 2 root users ? 0 Jan  4 07:24 ./
drwxr-xr-x 6 root root  ? 0 Jan  3 21:04 ../
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpu.shares
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.stat
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.usage
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuacct.usage_percpu
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.cpu_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.cpus
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mem_exclusive
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mem_hardwall
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_migrate
-r--r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_pressure
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_spread_page
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.memory_spread_slab
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.mems
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.sched_load_balance
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 cpuset.sched_relax_domain_level
--w------- 1 root users ? 0 Jan  4 07:24 devices.allow
--w------- 1 root users ? 0 Jan  4 07:24 devices.deny
-r--r--r-- 1 root users ? 0 Jan  4 07:24 devices.list
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 freezer.state
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 net_cls.classid
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 notify_on_release
-rw-r--r-- 1 root users ? 0 Jan  4 07:24 tasks
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