Hi Sachchidanand,
On Unix-like operating systems, if a process has a file open, and you
delete the file, it will not be removed from disk immediately. That will
only happen when the process closes the file descriptor, or exits.
People new to Unix-like operating systems often don't know this.
So you may have one or more such files on your / partition. Install a
utility called "lsof", run "lsof -n" as root, and grep the output for
the word "deleted", and examine those files, and see which processes are
holding them open. Then either restart those processes, or reboot the
server.
Regards,
Anand Buddhdev
On 29/06/2020 11:51, Sachchidanand Upadhyay via CentOS wrote:
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?
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