Without this patch, if you allocate hugepages, Ganeti won't count your free hugepages as available. This patch fix it. Apply in /usr/local/lib/python2.6/dist-packages/ganeti/hypervisor. Restart ganeti after patching.

Simple script to crudely measure disk speed. Take file name and test file size as argument - e.g.

./bench /tmp/test 2048 # create 2GB test file /tmp/test

#!/bin/bash
if [ $# -lt 2 ] ; then
echo Usage: ./bench FILE_NAME SIZE_IN_MB
exit 1
fi

sync
echo 3 > /proc/sys/vm/drop_caches
dd if=/dev/zero of=$1 bs=1M count=$2 oflag=direct 
sync
echo 3 > /proc/sys/vm/drop_caches
dd if=$1 of=/dev/null bs=1M count=$2 iflag=direct
rm -rf $1

Tested with OpenCart 1.5.x and nginx 0.7. SEO URL also works.

	echo idle > /sys/block/md0/md/sync_action

Simple script which will fetch latest delegated IP, filter it by country (this script only returned IP registered to Malaysian entity), and return the complete address in CIDR. Tested only with APNIC, so might need modification for use with other registry.

Drupal 6 -> Drupal 7. Nice eh?