CentOS 7: df started to hang

Solution 1:

Started having this issue on few servers after 7.5 upgrade. A quick reboot will fix the issue but I couldn't afford rebooting the production hosts, after hours of troubleshooting following fixed it for me.

systemctl restart proc-sys-fs-binfmt_misc.mount

Solution 2:

i have the same issue on lots of servers

quick & dirty fix is

yum -y reinstall systemd