From: "Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
To: Dwight Schauer <dschauer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: lxc-start: Device or resource busy - failed to remove previous cgroup
Date: Mon, 4 Jan 2010 19:24:18 -0600 [thread overview]
Message-ID: <20100105012418.GA14928@us.ibm.com> (raw)
In-Reply-To: <68e6eac61001041642p15d34837ocd13f13bd8249f21-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Quoting Dwight Schauer (dschauer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org):
> On Mon, Jan 4, 2010 at 12:02 PM, Serge E. Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> wrote:
> > Quoting Dwight Schauer (dschauer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org):
> >> On Mon, Jan 4, 2010 at 4:40 AM, Daniel Lezcano <daniel.lezcano-GANU6spQydw@public.gmane.org> 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.
tasks is empty, but there are subdirectories - 102, 26533, etc.
This looks like the dirtywork of the ns cgroup. If each of those
subdirs is also empty then you can rmdir them, then rmdir /cgroup/arch64-1.
Or, use a release agent, which is what I do.
cat << EOF > /bin/remove_dead_cgroup.sh
#!/bin/sh
echo "Removing dead cgroup .$*." >> /var/log/cgroup
rmdir /cgroup/$* >> /var/log/cgroup 2>&1
echo "return value was $?" >> /var/log/cgroup
EOF
echo /bin/remove_dead_cgroup.sh > /cgroup/release_agent
echo 1 > /cgroup/notify_on_release
> $ 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
next prev parent reply other threads:[~2010-01-05 1:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-04 1:10 lxc-start: Device or resource busy - failed to remove previous cgroup Dwight Schauer
[not found] ` <68e6eac61001031710w3e16f62blfb3b5bfb86ea43b7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 1:22 ` Balbir Singh
[not found] ` <661de9471001031722o21c6bd55kb73403c85a8145e3-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 1:46 ` Dwight Schauer
[not found] ` <68e6eac61001031746r44668e6cheb497c7df5f68a18-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 2:54 ` Dwight Schauer
[not found] ` <4B41C5A4.704@free.fr>
[not found] ` <4B41C5A4.704-GANU6spQydw@public.gmane.org>
2010-01-04 15:21 ` Dwight Schauer
[not found] ` <68e6eac61001040721m250c0f14u9c07d04ef9ec3648-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 18:02 ` Serge E. Hallyn
[not found] ` <20100104180225.GA3510-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-01-05 0:42 ` Dwight Schauer
[not found] ` <68e6eac61001041642p15d34837ocd13f13bd8249f21-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-05 1:24 ` Serge E. Hallyn [this message]
[not found] ` <20100105012418.GA14928-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-01-05 2:15 ` Dwight Schauer
[not found] ` <68e6eac61001041815h251bf0ffi5123f42e69e6a179-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-05 2:30 ` Serge E. Hallyn
[not found] ` <68e6eac61001031854v35c9b0a0sebce033812977e73-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 15:57 ` Balbir Singh
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