How to Check Disk Space for a Minecraft Server on Linux

Direct answer

Use df -h . in the server directory and df -i . to distinguish disk capacity from inode exhaustion. A full disk can prevent world saving and plugin database writes.

Recommended procedure

SSH into the host as an authorized user and change into the Minecraft server directory.
Run df -h . and df -i .; repeat for separate world or backup mounts.
Use du -sh on existing world, plugin, log and backup directories to identify large items, not to delete them.

What to change

cd /path/to/minecraft-server
df -h .
df -i .
du -sh world* plugins logs 2>/dev/null

Check current logs for No space left on device and failed region writes.
Back up important data off the affected disk before archiving expendable old logs or backups.
Create a small harmless file in a test directory only when authorized, then confirm normal world saves once free space is restored.

How to verify the result

Confirm df -h and df -i show headroom on the correct mount, then start and stop the server normally and inspect logs for fresh write errors.

Version and safety notes

Do not delete .mca region files or a live plugin database to recover space. Hosting panels may show quotas different from df or place world and backup directories on separate volumes.

Official references

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