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Linux Disk Full: df, du, Inodes and Deleted Files Still Held Open by Processes

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Self-Hosting & Infra beginner 5 min read $0.01 Updated 2026-10-20

Reproduced on Linux: df -h and df -i output formats, du sizes before and after deleting a file that stays open (4888 KB to 4 KB while the process still sees 5,000,000 bytes), the /proc fd symlink marked (deleted), and commands to find large directories.

A server says No space left on device but du cannot find the files. Check blocks and inodes with df, find big directories with du, and detect space held by deleted files that a process still has open.

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#linux#disk#df#du#troubleshooting

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