Add multiple Swap partitions

The Problem: 

When trying to increase the size of my swap partition in my Linux server I got the following:

root@server:~# sudo fallocate -l 1G /swapfile

fallocate: fallocate failed: Text file busy

Trying to turn off the swap partition returns: 

root@pilot888:~# sudo swapoff -a

swapoff: /swapfile: swapoff failed: Cannot allocate memory

The Solution: 

Leave that swap partition alone and create multiple partitions instead: 

root@server:~# sudo fallocate -l 1G /swapfile2

root@server:~# ls -lh /swapfile2

-rw-r--r-- 1 root root 1.0G Jul 12 09:55 /swapfile2

root@server:~# sudo mkswap /swapfile2

Setting up swapspace version 1, size = 1024 MiB (1073737728 bytes)

no label, UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

root@server:~# sudo swapon /swapfile2

root@server:~# sudo swapon --show

NAME       TYPE  SIZE   USED PRIO

/swapfile  file  512M   512M   -1

/swapfile2 file 1024M 193.6M   -2

root@server:~# free -h

              total        used        free      shared  buff/cache   available

Mem:           992M        784M         69M         60M        138M         25M

Swap:          1.5G        1.4G        124M