Mongodb EC2 I2 instance (pv, lv, vg)

mongodb install on ec2 - i2.2xlarge instance

# init_mongo.sh script 
......................
sudo yum update
df -h
cat /proc/partitions 
sudo fdisk -l
sudo su
yum install lvm2
fdisk -l
umount /mnt
pvcreate /dev/xvdb /dev/xvdc
vgcreate vg  /dev/xvdb /dev/xvdc
lvcreate -L1300G -n lv_data vg
lvdisplay 
vgdisplay 
mkfs -t ext4 /dev/vg/lv_data 
mkdir -p /data
mount /dev/vg/lv_data /data/
df -h
lvcreate -L60G -n lv_journal vg
lvcreate -L40G -n lv_log vg
mkfs -t ext4 /dev/vg/lv_journal 
mkfs -t ext4 /dev/vg/lv_log 
mkdir -p /journal
mkdir -p /log
mount /dev/vg/lv_journal /journal/
mount /dev/vg/lv_log /log/
df -h
echo "[MongoDB]
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
gpgcheck=0
enabled=1" | sudo tee -a /etc/yum.repos.d/mongodb.repo

exit
sudo yum install -y mongo-10gen mongo-10gen-server
df -h
sudo chown mongod:mongod /data /journal /log

echo '/dev/mapper/vg-lv_data /data ext4 defaults,auto,noatime,noexec 0 0
 /dev/mapper/vg-lv_journal /journal ext4 defaults,auto,noatime,noexec 0 0
 /dev/mapper/vg-lv_log /log ext4 defaults,auto,noatime,noexec 0 0' | sudo tee -a /etc/fstab

.......................................................
/etc/mongod.conf
dbpath = /data
logpath = /log/mongod.log
# Disable the HTTP interface (Defaults to localhost:27018).
nohttpinterface=false

# Turns off server-side scripting.  This will result in greatly limited
# functionality
noscripting=false
rest=false

port=27017
#bind_ip=127.0.0.1

$ sudo nano /etc/security/limits.conf
* soft nofile 64000
* hard nofile 64000
* soft nproc 32000
* hard nproc 32000

$ sudo nano /etc/security/limits.d/90-nproc.conf
* soft nproc 32000
* hard nproc 32000

sudo blockdev --setra 32  /dev/mapper/vg-lv_data 

$ echo 'ACTION=="add", KERNEL=="mapper/vg-lv_data", ATTR{bdi/read_ahead_kb}="16"' | sudo tee -a /etc/udev/rules.d/85-ebs.rules
ACTION=="add", KERNEL=="mapper/vg-lv_data", ATTR{bdi/read_ahead_kb}="16"

sudo chown -R mongod:mongod /data
sudo chown -R mongod:mongod /journal
sudo chown -R mongod:mongod /log


sudo yum install -y sysstat

sudo service mongod start
sudo ln -s /journal /data/journal