Solve Linux Swapon/swap: failure: Invalid parameter problem

First of all, I found that the error is not mkswap, but btrfs do not support swapfile, the solution is very simple, that is, the Swapfile mount to loopback on the

The script code is as follows

The code is as follows

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#!/bin/sh  #  # Copyright (C) Sebastian Philipp  #   set-e   swapsize= "$"  swapname= "$"   If [-Z "$swapsize"-o-z "$swapname"]  then   ; Cat <<eof  usage: $   size:the size of the file, like "8G"  file:path to the N EW swap file. This file should is not exists.  eof  exit 1  fi   If [e $swapname]  then  echo "www.11 1cn.net Error:file already exists. $swapname  exit 1  fi   swapfile=$ (losetup-f) #free loop device   # Set Nocow  touch $swapname  chattr +c $swapname  head-c $swapsize/dev/zero >> $swapname   Losetup $swapfile $swapname #mount file to loop  mkswap $swapfile  swapon $swapfile

The

usage is./btrfs-swapon <size> <file Path> The file address requires a nonexistent file, add this to the rc.local can boot from boot mount Swapfile