Software⏱️ 4 min read📅 2026-06-11

How to Fix: Linux: no space left on device error with 50% free space

Linux no space left on device error with 50% free space

Quick Answer: Check disk usage and consider increasing the partition size or using a different file system.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The 'no space left on device' error can be frustrating, especially when you're running critical applications like Squid-Proxy on Fedora 14. This error occurs when the available free space on your device is exhausted, preventing the system from allocating new memory or storage space.

It's particularly vexing because it seems counterintuitive given that you have plenty of free space (50% in this case). However, there are several reasons why this issue might persist despite sufficient available disk space.

⚠️ Common Causes

  • The primary reason for the 'no space left on device' error is a lack of contiguous free space. When the system's file system is fragmented, with files and directories scattered across different blocks, it can lead to a situation where there isn't enough continuous free space available to allocate new memory or storage space.
  • Another possible cause is that the system's swap space is full. If the system relies heavily on disk-based swap space, which is used when RAM is insufficient, and this swap space becomes filled up, it can also lead to the 'no space left on device' error.

🚀 How to Resolve This Issue

Reclaiming Free Space with Disk Defragmentation

  1. Step 1: Open a terminal and run the following command: `sudo fsck -f -v /dev/sda3` This will force a disk check on your root partition. If any errors are found, you'll be prompted to fix them.
  2. Step 2: Run the following command to defragment your root partition: `sudo e4defrag /dev/sda3` This may take some time depending on the size of your partition and the number of files on it.
  3. Step 3: Once the defragmentation process is complete, check if the available free space has increased. If not, proceed with the next step.

Increasing Swap Space

  1. Step 1: Determine how much swap space you currently have. Run `sudo dumptions -s` to view the current swap space usage.
  2. Step 2: Calculate how much additional swap space you need. Consider allocating at least 2-3 times the amount of RAM in your system for optimal performance.
  3. Step 3: Run the following command to add new swap space: `sudo fallocate -l /dev/sda4` Replace `` with the desired size for your new swap partition. For example, if you want to add 16GB of swap space, use `fallocate -l 16G /dev/sda4`. Then, create a new partition and format it as swap: `sudo mkswap /dev/sda4` followed by `sudo swapon /dev/sda4` to activate the new swap space.

💡 Conclusion

In summary, the 'no space left on device' error can be resolved by reclaiming free space with disk defragmentation or increasing your system's swap space. By following these steps and ensuring that your file system is properly maintained, you should be able to resolve this issue and improve the performance of your Squid-Proxy server.

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