Initialize ucloud data volume. (for default diskofferingid)

make_data_vol.sh

#!/bin/bash
sfdisk /dev/xvdb <<< "1,,8e" # one big Linux LVM type partition
if [ $? != 0 ]; then
    echo "No data disk?"
    exit 1
fi

pvcreate /dev/xvdb1
vgcreate VolGroup /dev/xvdb1
lvcreate -L 80g -n data00 VolGroup # Just try to create 80g vol.. Mostly failed
lvcreate -l 20477 -n data00 VolGroup # suitable size in my case
mkfs.ext4 /dev/VolGroup/data00 # choose your favorite filesystem

if [ ! -e /data ]; then
    mkdir /data
fi
echo "/dev/VolGroup/data00 /data ext4 defaults,errors=remount-ro,noatime,nodiratime 0 1" >> /etc/fstab
mount /dev/VolGroup/data00 /data