Troubleshooting Tip: How to identify files or directories utilizing the most disk space on a partition

1. Enter the command below in the CLI to identify the partition path that is facing the issue:
   

    

# fn df -h

Filesystem                 Size       Used  Available Use% Mounted on

/dev/root                835.7M     740.0M      95.7M  89% /

none                       1.1G      32.1M       1.1G   3% /tmp

none                       3.8G       3.8M       3.8G   0% /dev/shm

/dev/sda1                362.1M     361.2M          0 100% /data <- The path facing the issue is /data.

/dev/sda3                 90.5M      28.0K      85.6M   0% /home

/dev/sda4                 30.4G     707.4M      28.2G   2% /var/log

2. Enable shell access using CLI:

For versions older than v7.6.x:

config system global

    set shell-access enable

    set shell-username shell

    set shell-password fortinet

    set shell-timeout 1200  

end

For v7.6.x:

config system console

    set shell sh

end

3. Access shell:

For versions older than v7.6.x:
Log in using the CLI using the credentials set in the previous step:

• username: shell
• password: fortinet

For v7.6.x:
Connect to the console and enter the exit command to quit the CLI and access shell.

4. Run the command in the required partition and collect the output for analysis:

du -a <path> | sort -rn | head -n 100

Example with partial output:

du -a /data | sort -rn | head -n 100

341164  /data

178964  /data/rootfs.gz

109424  /data/lib_packge

58968   /data/lib_packge/wvs.7z

50452   /data/lib_packge/python-libs.7z

29852   /data/etc

9988    /data/lib

8208    /data/lib/libav.so.orig

8188    /data/etc/sig-db

8184    /data/etc/sig-db/signature.db

7208    /data/vmlinuz

5108    /data/etc/zoneinfo

3008    /data/vmlinuz.kdump

Related document:
Checking disk information & issues