Inodes Full? Why You’re Out of Space!

You have free disk space but can’t save files? You’ve probably run out of inodes. Learn what they are and how to free them fast.

🧠 What is an inode?

An inode is a data structure that stores metadata about each file:

• permissions,

• size,

• ownership,

• last modification time,

• and disk location.

One file = one inode. Millions of tiny files = millions of inodes consumed.

🛑 Common issue: “Disk full” with free space

This happens when:

• temp/log/session files grow uncontrolled,

• WordPress or CMS generate tons of cache,

• old scripts keep creating files but don’t delete them.

🧹 How to reduce inode usage

🔍 1. Check inode usage:

📂 2. Find top inode consumers:

🗑 3. Clean up:

• clear /tmp, /var/log, .trash, and backups

• remove unused cache

🔁 4. Rotate logs properly

Use logrotate to prevent unlimited file growth.

♻️ 5. Archive small files

If you have thousands of small files:

🛡️ Prevention tips:

• Monitor inode usage regularly.

• Avoid file-based session storage.

• Limit automatic file generation in CMS/plugins.