CentOS Build kernel: No space left on device solution

1. Problem: The original source code in the root folder below

Compilation appears no space left on device

Use the df-h command to see the root folder space consumption complete

2, change the source code in other places very sufficient to compile

In Make Module_install still appears no space left on device

But the folder below is very full of space

。 Keep Df-h.

The root folder is full.

3 workaround

Remove unused files from the root folder, as they go through the root folder at the time of installation.

So, enough to make the root folder of space

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CentOS Build kernel: No space left on device solution