"SWAP Increase Size"

 

Here i describe how to Increase the size of the SWAP from 2G to 6 G by adding 4 G

 

[wissem@myserver ~]# free -mt
             total       used       free     shared    buffers     cached
Mem:          1877       1799         77          0         79         77
-/+ buffers/cache:       1642        234
Swap:         2047         45       2002
Total:        3925       1845       2079
[wissem@myserver ~]#
[wissem@myserver ~]# dd if=/dev/zero of=/file.swap bs=1024 count=4096000
4096000+0 records in
4096000+0 records out
4194304000 bytes (4.2 GB) copied, 27.5823 s, 152 MB/s
[wissem@myserver ~]# sync
[wissem@myserver ~]# sudo mkswap -f /file.swap 4096000
Setting up swapspace version 1, size = 4095996 KiB
no label, UUID=c711140f-e971-408f-8eaf-a7893d6e0777
[wissem@myserver ~]# sudo swapon /file.swap

[wissem@myserve ~]# cat /etc/fstab  | grep swap

/dev/mapper/wissem@myserve-swap swap                    swap    defaults        0 0

/file.swap              none                    swap    sw        0 0

[wissem@myserve ~]# grep -i swap /etc/fstab

/dev/mapper/a021rds02eportal-swap swap                    swap    defaults        0 0

/file.swap                        swap                    swap    defaults        0 0

[root@a021rds02-eportal ~]#
[wissem@myserver ~]# free -mt
             total       used       free     shared    buffers     cached
Mem:          1877       1802         74          0          3        194
-/+ buffers/cache:       1604        272
Swap:         6047         63       5984
Total:        7925       1865       6059
[wissem@myserver ~]# swapon -s
Filename                                Type            Size    Used    Priority
/dev/dm-1                               partition       2097148 64796   -1
/file.swap                              file            4095996 0       -2
[wissem@myserver ~]#

 

[wissem@myserver ~]# more /proc/swaps

Filename                                Type            Size    Used    Priority

/dev/dm-1                               partition       2097148 0       -1

/file.swap                              file            4095996 0       -2

[root@a021rds02-eportal ~]#


Hope this Helps :)!

Wissem MEDIOUNI