Swap FAKE - Revision history

Snifer at 04:47, 28 January 2017

2017-01-28T04:47:15Z

Snifer at 04:46, 28 January 2017

2017-01-28T04:46:22Z

Snifer: Created page with "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 b..."

2017-01-28T04:31:42Z

Created page with "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 b..."

New page

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

<pre>
#!/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
</pre>

[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 [[User:Snifer|Snifer]] ([[User talk:Snifer|talk]]) 04:31, 28 January 2017 (UTC)

@@ Line 19: / Line 19: @@
 free -m
 </pre>
+<pre>
 [root@node1 appp]# ./swapfake.sh
                total        used        free      shared  buff/cache   available
 Mem:           2048         343         930         133         774        1469
 Swap:           512           0         512
+</pre>
 [root@node1 appp]# ./swapfake.sh 2048
                total        used        free      shared  buff/cache   available
 Mem:           2048         337         935         133         774        1474
 Swap:          2048           0        2048
+</pre>
 Sort Memory Usage
 <pre>