On Fedora Linux:

/dev/mapper/fedora-root is Full

$ df -h

/dev/mapper/fedora-root   50G   46G  971M  98% /

As seen on StackExchange.

Check disk usage on /var as described in Fedora Forum

$ sudo du -hs /var
36G     /var

$ sudo du -m /var | sort -nr | head -30

36061   /var
31152   /var/cache
30768   /var/cache/PackageKit

“Delete the cached data in this directory as described in Fedora 23 – Can I safely delete files in /var/cache/PackageKit/metadata/updates/packages?”

$ sudo pkcon refresh force -c -1

About pkcon:

  • PackageKit console client pkcon
  • refresh [force]: Refresh the cached information about available updates.

  • -c, –cache-age AGE: Set the maximum acceptable age for cached metadata, in seconds. Use -1 for ‘never’.

    Refreshing cache Loading cache Downloading repository information Loading cache Downloading repository information Loading cache Downloading repository information Finished

Check again:

$ df -h
/dev/mapper/fedora-root   50G   25G   23G  53% /