Linux FIXED: "No Space Left on Device" But Disk Is NOT Full? (100% Works)
IS YOUR LINUX SERVER SHOWING "NO SPACE LEFT ON DEVICE" BUT df -h SAYS YOU HAVE GIGABYTES FREE?
You are NOT alone. This is one of the most CONFUSING and FRUSTRATING errors in Ubuntu, Debian, and Raspberry Pi Linux systems.
In this video, I reveal the REAL culprit behind this deceptive error message and show you TWO simple ways to fix it in under 2 minutes.
Spoiler alert: It's NOT your hard drive. It's log2ram hiding in plain sight.
Processing triggers for libc-bin (2.39-0ubuntu8.7) ...
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
Processing triggers for dbus (1.14.10-4ubuntu4.1) ...
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
Processing triggers for initramfs-tools (0.142ubuntu25.8) ...
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
E: Write error - ~LZMAFILE (28: No space left on device)
root@ustc-a8-1://root/certs#
WHAT YOU'LL LEARN:
✅ Why dpkg keeps complaining about "No space left on device"
✅ How to check if log2ram is causing your problem (one simple command)
✅ The 90MB "ghost file" mystery revealed
✅ TWO proven methods to fix it instantly
✅ Which method is better: manual clean or reboot?
✅ How to PREVENT this from ever happening again
💻 COMMANDS USED IN THIS VIDEO:
Check if log2ram is full
df -h /var/log
Find the largest log files
ls -lhS /var/log/ | head -20
Method 1: Manual clean (no reboot)
sudo systemctl stop log2ram
sudo truncate -s 0 /var/log/syslog
sudo /usr/local/bin/log2ram clean
sudo systemctl start log2ram
Method 2: Just reboot
sudo reboot
🎯 WHO THIS VIDEO IS FOR:
Linux System Administrators
Ubuntu / Debian Users
Raspberry Pi Owners
Docker & Home Server Enthusiasts
DevOps Beginners
Anyone who runs apt update regularly
🔧 RELATED PROBLEMS THIS SOLVES:
dpkg: cannot write to log file: No space left on device
E: Write error - No space left on device
apt upgrade failing with mysterious errors
/var/log showing 100% usage but no large files visible
Log2ram filling up unexpectedly
💡 PRO TIP:
After fixing this, increase your log2ram size to prevent future issues:
sudo nano /etc/log2ram.conf
Change: MAX_LOG=256M (from 128M)
sudo systemctl restart log2ram
📢 CONNECT WITH ME:
💬 Drop a comment if this saved your server
🔔 Subscribe for more Linux fixes
👍 Like if you learned something new
⚠️ DISCLAIMER:
These commands are safe for standard Ubuntu/Debian systems. Always backup important data before running system commands. Not responsible for any data loss.
Thanks for watching! Keep your logs clean and your systems running! 🐧
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