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Mehmet
Asked: 2020-04-25 20:08:39 +0800 CST

e514: write error (file system full?) in linux' error even if you file system is not full?

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I am trying to edit file constraint_0_power_limit_uw under /sys/class/powercap/intel-rapl/intel-rapl:0. When I try to edit it, I get 

e514: write error (file system full?) in linux' error even if you file system is not full?

message even if my file system is not full. I attach the output of df -h.

How can I solve this problem?

Output of df -h:

filesystem editing

1 Answers

  1. Best Answer

    You can't edit files in/sys because it is a virtual filesystem. df -h /sysshows that the device is "sysfs", not a physical one as /dev/sda1 or similar.

    This virtual filesystem sysfs exposes kernel objects.

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