topic Re: Need to increase swap using new partition on a server in Operating System - Linux

Need to increase swap using new partition on a server

Techsystemquery — Thu, 01 Jul 2010 08:45:39 GMT

I need to increase swap from 2 GB to 4 GB
I am going to create new partition.

what steps i need to do ? do i need to use swapoff command ?

Re: Need to increase swap using new partition on a server

TwoProc — Thu, 01 Jul 2010 14:25:25 GMT

create the partition and give the it the tag type for swap (using fdisk).

Run the mkswap command against your new device. Just running it with the defaults against your device created above is usually fine.

mkswap /dev/

Add a line to /etc/fstab for your new swap device:

/dev/ swap swap defaults 0 0

run the command:

swapon -a

to verify you've got it:

cat /proc/swaps

Re: Need to increase swap using new partition on a server

Techsystemquery — Thu, 01 Jul 2010 15:35:39 GMT

Thanks John.

After creating partition is would need reboot is it advised we can run partprobe command or should i go reboot ?

Re: Need to increase swap using new partition on a server

Modris Bremze — Thu, 01 Jul 2010 17:46:08 GMT

After creating a new swap partition it is not necessary to reboot. If the new swap partition is mounted and visible in 'cat /proc/swaps' output - it's all is done.

Re: Need to increase swap using new partition on a server

TwoProc — Thu, 01 Jul 2010 19:52:22 GMT

No need to reboot to increase swap. Only when you would reduce or eliminate swap would a reboot be necessary. You can stay up and do what I outlined.

Re: Need to increase swap using new partition on a server

Ishwar_1 — Fri, 02 Jul 2010 04:38:10 GMT

The steps to Create A new Swap Space.

1) Create A new filesystem with the partition System ID of "linux Swap"

2) Use mkswap to set up a Linux swap area on the partition.

3) If you want to make it permanant make an entry of it in /etc/fstab

4) swapon with partition name will activate that partition as Swap

You can view your newly created swap space is active or not by using Command

1) cat /proc/swaps
2) free
3) top

Regards
Ishwar