[CentOS] Unable to find the used space

Mon Jun 29 09:51:12 UTC 2020
Sachchidanand Upadhyay <sa4.sp-dl at nkn.in>

Hi,

 While checking with df -h, it's showing the used space is 94% on root (/). If checked with du -sh, it's not showing the used space.

  # df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 857M 7.0G 11% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 50G 47G 3.4G 94% /
/dev/mapper/centos-home 241G 47G 195G 20% /var/log
/dev/sda1 1014M 189M 826M 19% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 1.6G 0 1.6G 0% /run/user/1002


# du -sh /*
0 /bin
156M /boot
0 /dev
33M /etc
388K /home
0 /lib
0 /lib64
0 /media
0 /mnt
0 /opt
du: cannot access ‘/proc/21489/task/21489/fd/4’: No such file or directory
du: cannot access ‘/proc/21489/task/21489/fdinfo/4’: No such file or directory
du: cannot access ‘/proc/21489/fd/4’: No such file or directory
du: cannot access ‘/proc/21489/fdinfo/4’: No such file or directory
0 /proc
6.1M /root
857M /run
0 /sbin
0 /srv
0 /sys
0 /tmp
2.8G /usr
62G /var


# du -sh /var/*
0 /var/adm
89M /var/cache
0 /var/crash
8.0K /var/db
0 /var/empty
0 /var/games
0 /var/gopher
0 /var/kerberos
16G /var/lib
0 /var/local
0 /var/lock
47G /var/log
0 /var/mail
0 /var/nis
0 /var/opt
0 /var/preserve
0 /var/run
98M /var/spool
0 /var/tmp
499M /var/www
0 /var/yp

How can i find this hidden space?
-- 
BR,
Sachchidanand