Disk Full, but the File Is Gone

hard 40 XP ~8 minHands-on lab Pro

Someone deleted a huge log file of beacon to free disk space, but df still shows the space as used, and du cannot find it anywhere. beacon is processing payments and must not be restarted.

Task

  • Free the disk space held by the deleted log file.
  • beacon keeps running: the same process, with the same PID.
  • It must still be able to write log lines afterwards.

About this machine

Ubuntu 24.04 with no internet access. You are student with passwordless sudo. The grader checks the final state of the machine, not the commands you typed. Values like names and ports are generated for you.

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