Difference between revisions of "Swap FAKE"
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Revision as of 11:31, 28 January 2017
Create Fake Swap in OpenVZ VPS if you get swapon failed: Operation not permitted Error
if you get swapon failed: Operation not permitted Error even if you run as root it is because in your VPS swap creation is not allowed follow below steps to Create Fake Swap in OpenVZ VPS
#!/bin/bash
SWAP="${1:-512}"
NEW="$[SWAP*1024]"; TEMP="${NEW//?/ }"; OLD="${TEMP:1}0"
umount /proc/meminfo 2> /dev/null
sed "/^Swap\(Total\|Free\):/s,$OLD,$NEW," /proc/meminfo > /etc/fake_meminfo
mount --bind /etc/fake_meminfo /proc/meminfo
free -m
[root@node1 appp]# ./swapfake.sh
total used free shared buff/cache available
Mem: 2048 343 930 133 774 1469 Swap: 512 0 512
[root@node1 appp]# ./swapfake.sh 2048
total used free shared buff/cache available
Mem: 2048 337 935 133 774 1474 Swap: 2048 0 2048
@ Test work on OpenVZ Centos 7 Snifer (talk) 04:31, 28 January 2017 (UTC)
