Monday, 12 December 2011

### Create Swap based on File ###



  1. The ability to provision swap space based on a file, similar to pagefile.sys in Windows NT, etc., if you have no available disk space to partition.

  2. Doesn't waste partitions


Task:
 1. Create 512MB swap file
  a. dd if=/dev/zero of=/home1/swapfile1 bs=1024 count=524288
  b. mkswap /home1/swapfile1 - overlays swap file system
  c. swapon /home1/swapfile1 - makes swap space avaialable to the kernel

 2. Ensure that when the system reboots, the swapfile is made avialable to the kernel
  a. nano /etc/fstab - /home1/swapfile1 swap swap defaults 0 0


 3. Create 2GB swap file
  a. dd if=/dev/zero of=/home1/swapfile2 count=2G

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