I have around one hundred .tar files and they include millions of small files. I want to extract them to one directory in Linux.

These .tar files are on a mounted LVM EXT4 file system. But no matter I extract to the mounted FS or my root directory, tar both says no space on device.

However, I used df -h and df -i to check the left space, there is a lot of left (700G in my root directory and 30T in the mounted FS).

Therefore, what could be the problem here?