LabsDisk full, no files
easy30 min100 points

Disk full, no files

df says 100%, du finds nothing

app@app
app@app:~$ df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/nvme0n1p1 9.7G 9.7G 0 100% /
app@app:~$ sudo du -shx /
1.4G /
Illustration of the symptom, not a log from the lab.

What you learn

A deleted file keeps its space while something holds it open.

What you get

  • One broken Debian server of your own, root through sudo.
  • An hour on the clock, and fixmyprod extend adds another.
  • Checks run from outside and show what they got against what they want.
  • Three hints if you get stuck. They cost 10, 20 and 40 of this lab's 100 points.
  • A debrief once it is solved.