When I run df -h it shows that 95% has been used in /data4 and I am the only user under /data4.

Filesystem      Size  Used Avail Use% Mounted on
overlay         591G  455G  136G  78% /
tmpfs            64M     0   64M   0% /dev
tmpfs            63G     0   63G   0% /sys/fs/cgroup
/dev/vdb        591G  455G  136G  78% /data
/dev/vdf        591G  537G   54G  91% /data1
/dev/vde        591G  530G   62G  90% /data2
/dev/vdc        591G  556G   35G  95% /data4
/dev/vdd        591G  506G   86G  86% /data3
tmpfs            63G  1.5M   63G   1% /dev/shm
/dev/vda1        99G   82G   13G  88% /etc/localtime
tmpfs            63G   12K   63G   1% /run/secrets/kubernetes.io/serviceaccount
tmpfs            63G   12K   63G   1% /proc/driver/nvidia
devtmpfs         63G     0   63G   0% /dev/nvidia0
tmpfs            63G     0   63G   0% /proc/acpi
tmpfs            63G     0   63G   0% /proc/scsi
tmpfs            63G     0   63G   0% /sys/firmware

However, if I check how much is used in /data4 using du -sh I see this:

du -sh

Only 241G is used. I want to free up space under /data4, but can’t find out where almost more than half of the 556G is used.

Why is that?

  • This question has been answered many times in different sites. Here is one. Possibilities are that there is an open file that has been deleted or that the file system is corrupted.
    – doneal24
    Mar 16, 2022 at 19:20

1 Answer 1


You may have run into ext2 and successors reserving 5% of the filesystem for use by the root user.

To set the reserved blocks percentage to 0% (0 blocks):

tune2fs -m 0 /dev/vdc

To get the current value :

tune2fs -l <device>

For more information see the post
Is there a way to make ext-filesystems use less space for themselves in Linux?

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