How to Check System Disk Space Partition Breakdown and lower the disk partition

What do the different disk partitions mean in show system disk-space, and how can I clear disk space if a partition gets full?

> show system disk-space
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       3.8G  3.2G  438M  89% /
none            2.5G   56K  2.5G   1% /dev
/dev/mmcblk0p5   12G  7.4G  3.5G  69% /opt/pancfg
/dev/mmcblk0p6  3.8G  2.1G  1.6G  58% /opt/panrepo
tmpfs           2.5G  357M  2.2G  15% /dev/shm
cgroup_root     2.5G     0  2.5G   0% /cgroup
/dev/mmcblk0p8  4.7G  2.7G  1.8G  62% /opt/panlogs
/dev/loop0      111M  5.6M  100M   6% /opt/panlogs/wildfire/tmpfile

• All Palo Alto Networks Firewalls

• All PAN-OS Versions

> show system disk-space
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       3.8G  3.2G  438M  89% / ---------> system root partition
none            2.5G   56K  2.5G   1% /dev
/dev/mmcblk0p5   12G  7.4G  3.5G  69% /opt/pancfg ---------> PAN config partition 
/dev/mmcblk0p6  3.8G  2.1G  1.6G  58% /opt/panrepo ---------> PAN OS repository partition
tmpfs           2.5G  357M  2.2G  15% /dev/shm
cgroup_root     2.5G     0  2.5G   0% /cgroup
/dev/mmcblk0p8  4.7G  2.7G  1.8G  62% /opt/panlogs ---------> PAN Log related partition
/dev/loop0      111M  5.6M  100M   6% /opt/panlogs/wildfire/tmpfile

• / : system root partition :

  • If usage exceeds 90%, run this CLI command to clean up system temporary files:

    Plaintext

    debug software disk-usage cleanup deep threshold 90

• /opt/pancfg : pan config partition 

  • Delete old or unused saved configuration snapshots.

  • Delete downloaded software images and old dynamic update content that are no longer needed.

  • (PAN-OS 10.2 or higher) Check specific folder usage with the CLI command:

• > show system pancfg-directory-usage 14G     /opt/pancfg 13G     /opt/pancfg/mgmt 5.1G    /opt/pancfg/mgmt/sw-images 4.2G    /opt/pancfg/mgmt/updates 1.7G    /opt/pancfg/mgmt/updates/oldcontent 1.5G    /opt/pancfg/mgmt/updates/curcontent 1.2G    /opt/pancfg/mgmt/uploaded/sw-images ...

• /opt/panrepo: PAN OS repository partition 
  • Delete older downloaded PAN-OS images from Device > Software.
• /opt/panlogs : pan log related partition : 

  • Reduce the log storage quota under Device > Setup > Management > Logging and Reporting Settings.

  • Alternatively, clear old log files via CLI or let the firewall automatically overwrite older logs as needed.

• For detailed steps on clearing the configuration partition, see Pancfg Partition Cleanup Guide.

• For detailed steps on clearing the root partition, see Root Partition Cleanup Guide.