Monday, 12 December 2011

### Swap Partitions & Files ###

  1. Extra, virtual RAM for the OS


Steps:
 1. Identify current swap space
  a. swapon -s - enumerates partitions and/or files, which constitute swap storage

  b. free -m

 2. Select target drive and provision swap partition
  a. fdisk /dev/sdb
  b. n
  c. 2
  d. 500
  e. +512 (cylinder 562) - 63 cylinders are required for 512MB
  f. t - change type
  g. 82 - Linux Swap/Solaris
  h. w - committ changes to disk

 3. Create the swap file system on the raw partition: /dev/sdb2
  a. mkswap /dev/sdb2

 4. Enable swapping - publish the swap space to the kernel
  a. swapon /dev/sdb2 - this enables swapping on /dev/sdb2

 5. update /etc/fstab
  a. /dev/sdb2 swap swap defaults 0 0

swapoff /dev/sdb2 - disables swapping on /dev/sdb2

Task:
 1. Improve system performance by distributing swapping to /dev/sdb2
  a. swapon /dev/sdb2
  b. swapoff /dev/sda6
  c. disable /dev/sda6 via /etc/fstab

No comments:

Post a Comment