how to increase the size of existing swap partition ?

gautamnarayan · 10-30-2008, 05:07 AM

Dear Sir,

I have a computer of Linux

fdisk -l

/dev/hda1 /
/dev/hda2 /boot
/dev/hda3 swap

and i have to increase the size of the existing swap partition

i have redhat and suse linux both.

please teach me how to increase the existing swap partition for both redhat and suse computers in my office .

hanks a lot.

Mega Man X · 10-30-2008, 05:14 AM

Quote:

Originally Posted by gautamnarayan

Dear Sir,

I have a computer of Linux

fdisk -l

/dev/hda1 /
/dev/hda2 /boot
/dev/hda3 swap

and i have to increase the size of the existing swap partition

i have redhat and suse linux both.

please teach me how to increase the existing swap partition for both redhat and suse computers in my office .

hanks a lot.

That are two ways that you can do that (off the top of my head). The first way is to simply resize the partition, which could be easily done with a live CD (eg: Ubuntu) and gparted. The other way could be done by using a file as a swap file. Take a look here:

http://www.linux.com/feature/113956

Regards!

jschiwal · 10-30-2008, 05:32 AM

You can also create another swap partition in available free space on the disk. Unless the reason you need to increase the swap partition is so that the resume partition (a swap partition) be at least as large as the ram, so that suspending the computer works.

allez · 10-30-2008, 05:50 AM

One also may create a swap file:

Code:

dd if=/dev/zero of=/.swapfile bs=1M count=1024
mkswap -v1 /.swapfile
swapon /.swapfile

This example creates in root directory file named ".swapfile" with size equal to 1 GB and then appends it to existing swap space.

beadrifle · 12-10-2010, 11:05 AM

Works like a charm; thank you.

Drakeo · 12-10-2010, 11:24 AM

Quote:

That are two ways that you can do that (off the top of my head). The first way is to simply resize the partition, which could be easily done with a live CD (eg: Ubuntu) and gparted. The other way could be done by using a file as a swap file. Take a look here:

with live cds you have to be careful because when using a livcd on a linux system it will try to use the available swap partition then mount it.
you will be unable to unmounted a swap partition. You must use the option to run in ram only mode. like puppy linux boot command puppy pfix=ram
or any of the F1,2,3 options on the live cd.