how to make linux(centOS) use more than 1 partitions

lnthai2002 · 02-07-2006, 10:46 PM

Hi,
I have just upgraded memory from 512Mb to 1.5Gb, and i need to extend the swap partition which was 1Gb. I did make another partition (2Gb) for swaping but i dont know if i have to do anything else beside adding another lines to /etc/fstab to make the system use the new partition as swap. I am using centOS (RedHat Enterprise liked) and gentoo
If anyone know, please help.
Thanks in advance
Thai

pljvaldez · 02-08-2006, 03:47 PM

You should be able to just change the fstab and then either reboot or remount all partitions (remount -a ???, I forget).

Of course, you may not actaully NEED to use more swap... Many machines now a days hardly access swap if they have 1.5Gb...

lnthai2002 · 02-08-2006, 04:33 PM

I never see my swap file being touched, but since i install oracle 10g, i must make it double my ram size or oracle will complain about it.
Thanks for the advice

amosf · 02-08-2006, 04:48 PM

You can use a swap file rather than partition. There are details of how to do it in man mkswap...

michaelk · 02-08-2006, 05:52 PM

Yes, you need to format the swap partition using the mkswap command.
mkswap /dev/hdxy (Where xy are the drive/partition IDs of the new 2GB swap partition)

The swapon /dev/hdxy command will activate without rebooting. Check the output of the free command to verify the additional swap space. It should be 3GB total if you kept the original.