#!/bin/bash

#By Spinestars
#2013-11-11
#This is a lvsnap of auto-create

Help(){

echo "Usage:

---device eg:sd[b-z]

---partition_number eg:-

---partition_size  

-P \"1 2 3\" create partition

eg:lvsnap.sh -P \"sdc 1 4G\"

-p \"1 2\" create lv

-a \"1 2 3\"create all (interactive)

-h Usage

"

}
#**********************************************************

part(){

fdisk -l /dev/$ &&

read -p " if go on ,initialize the $1 partation [any press] or ctrl + c:"

dd if=/dev/zero of=/dev/$ bs= count=

sync

echo 'create partition:'

echo "n

p

$

+$

t

8e

w

p" | fdisk /dev/$1

sync

sleep

partx -a /dev/$$ /dev/$

echo "$1$2 has been created successfully!The size is $3!"

}
#**********************************************************

pv(){

ifpv=`pvdisplay | grep "/dev/$1$2"`

echo 'create pv...'

[ -z "$ifpv" ] &&

pvcreate /dev/$$ ||

echo "Warnning:PV:$1$2 is existed!" && read -p " if go on [any press] or ctrl + c:"

}

#**********************************************************

vg(){

read -p 'create vg(plesae input vgname):' vgname

ifvg=`vgdisplay | grep "$vgname"`

[ -z "$ifvg" ] &&

vgcreate $vgname /dev/$$ ||

echo "Warnning:$vgname is existed!" && read -p "if go on [any press] or ctrl + c:"

}

#**********************************************************

lv(){

read -p 'create lv(please input lvname):' lvname

read -p 'create lv(please input lvsize):' lvsize

iflv=`lvdisplay | grep "/dev/$vgname/$lvname"`

[ -z "$iflv" ] &&

lvcreate -n $lvname -L $lvsize $vgname  &&

echo "initialize /dev/mapper/$vgname-$lvname:" &&

mke2fs -t ext4 /dev/mapper/$vgname-$lvname &&

sleep  ||

echo "Warnning:$lvname is existed!" &&

read -p "if go on [any press] or ctrl + c:"

read -p "mount /dev/mapper/$vgname-$lvname(please input mount point and if point is not exist ,then create it):" point

ls / | grep "^`basename $point`$" &&

mount | grep "$lvname" &&

echo "$point is existed and is mounted!" ||

{

mkdir -p $point &&

mount -t ext4 /dev/mapper/$vgname-$lvname $point &&

[ $? -eq  ] && echo "$vgname-$lvname is mounted successfully!"

}

}

#********************************************************

#while [  ];do

#    [ $lvsnapsize -le $lvsize ] ||

#    echo "Warnning:$lvsnapsize is too larger!" &&

#    read -p 'Retry:input lvsnapsize:' lvsnapsize

#done

#********************************************************

lvsnap(){

read -p 'create lvsnap(please input lvsnapname):' lvsnapname

read -p 'create lvsnap(please input lvsnapsize):' lvsnapsize &&

iflv=`lvdisplay | grep "/dev/$vgname/$lvsnapname"`

[ -z "$iflv" ] &&

lvcreate -s -p r -n $lvsnapname -L $lvsnapsize /dev/mapper/$vgname-$lvname ||

echo "Warnning:$lvsnapname is existed!" && read -p "if go on [any press] or ctrl + c:"

read -p "mount /dev/mapper/$vgname-$lvsnapname(please input mount point and if point is not exist ,then create it):" snappoint

ls / | grep "^`basename $snappoint`$" &&

mount | grep "$lvsnapname" &&

echo "$snappoint is existed and is mounted!" ||

{

mkdir -p $snappoint &&

mount -t ext4 /dev/mapper/$vgname-$lvsnapname $snappoint &&

[ $? -eq  ] && echo "$vgname-$lvsnapname is mounted successfully!"

}

}

#*********************************************************

tar2bak(){

bakfile_name="/backup/$lvname/$lvname-`date +%F_%T`.tar.xz"

echo $bakfile_name

mkdir "${bakfile_name%/*}"

echo "tar $snappoint to ${bakfile_name%/*}:"

tar Jcf $bakfile_name $snappoint

[ -f $bakfile_name ] &&

echo "$bakfile_name has been created successfully!"

sleep

echo "remove $lvsnapname:"

umount $snappoint

lvremove /dev/mapper/$vgname-$lvsnapname

}

while getopts P:p:ha: select

do

    case $select in

    P)

        read -p 'partition automation to create[yes|no]:' Partif

        [ $Partif = 'yes' ] && part $OPTARG

    ;;

    p)

        pv $OPTARG

        vg

        lv

        lvsnap

        tar2bak && echo "backup success!" &&

        find ${bakfile_name%/*} -amin -1 -type f -ls

    ;;

    a)

        read -p 'partition automation to create[yes|no]:' Partif

        [ $Partif = 'yes' ] && part $OPTARG

        read -p 'Pv automation to create[yes|no]:' Pvif

        [ $Pvif = 'yes' ] && pv

        read -p 'Vg automation to create[yes|no]:' Vgif

        [ $Vgif = 'yes' ] && vg

        read -p 'Lv automation to create[yes|no]:' Lvif

        [ $Lvif = 'yes' ] && lv

        read -p 'Lvsnap automation to create[yes|no]:' Lvsnapif

        [ $Lvsnapif = 'yes' ] && lvsnap

        read -p 'bak is baginning [yes|no]:' tar2bakif

        [ $tar2bakif = 'yes' ] && tar2bak && echo "backup success!" &&

        find ${bakfile_name%/*} -amin -1 -type f -ls

    ;;

    *)

        Help

    ;;

    esac

done