1

I am trying to understand the disk usage in my RHEL system. When I run the Disk Usage Analyzer tool graphically, my screen shows the below output.

enter image description here

However, if I run the command df -h I get the below output.

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda5              38G   23G   14G  64% /
/dev/sda7             146G   48G   91G  35% /home
/dev/sda3              99M   23M   72M  24% /boot
tmpfs                 2.0G     0  2.0G   0% /dev/shm

In the graphical output, I see the / is having 71.7 GB and usage is 100%. However, from the command line, I see that I still have 14G left and the use % is only 64. Why is there a discrepancy between the command line and the graphical output?

How can I interpret the output?

2

That's because the GUI tool (I think that's baobab) does not take into account the different partitions, it only looks at the directory tree. This means that it sees /home as a subdirectory of / but does not consider that it is a separate partition.

If you look at your df output:

/dev/sda5              38G   23G   14G  64% /<br>
/dev/sda7             146G   48G   91G  35% /home

you have 23G used in / and 48G used in /home. 48+23=71 so baobab is reporting 71G used in /.

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