From: "Li,Rongqing" <lirongqing@baidu.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "tj@kernel.org" <tj@kernel.org>,
"lizefan@huawei.com" <lizefan@huawei.com>,
"hannes@cmpxchg.org" <hannes@cmpxchg.org>,
"cgroups@vger.kernel.org" <cgroups@vger.kernel.org>
Subject: mount cgroup with "already mounted or cgroup busy"
Date: Wed, 30 Oct 2019 09:32:41 +0000 [thread overview]
Message-ID: <11be9352e1e54ebebad078b1dac7b670@baidu.com> (raw)
Hi:
I meet a issue, and not sure if it is normal
Using the below script, the last line mount will fail after unmount
And it will fail until reboot system
mount -t cgroup -o cpu,cpuset xx cgroup
mkdir cgroup/x
rmdir cgroup/x
umount cgroup
mount -t cgroup -o cpu xx cgroup
mount: xx already mounted or cgroup busy
but if I add sleep, it will success
mount -t cgroup -o cpu,cpuset xx cgroup
mkdir cgroup/x
rmdir cgroup/x
sleep 10 <<<<==========
umount cgroup
mount -t cgroup -o cpu xx cgroup
- Li RongQing
next reply other threads:[~2019-10-30 9:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-30 9:32 Li,Rongqing [this message]
2019-11-22 15:19 ` Michal Koutný
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