mount cgroup with "already mounted or cgroup busy"
From: Li,Rongqing
Date: Wed Oct 30 2019 - 05:32:48 EST
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