shell脚本练习(短路练习)

#!/bin/bash

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

Help(){

echo "Usage:

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

2---partition_number eg:1-4

3---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/$1 &&

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

dd if=/dev/zero of=/dev/$1 bs=512 count=1

sync

echo 'create partition:'

echo "n

p

$2



+$3

t

8e

w 

p" | fdisk /dev/$1

sync

sleep 3

partx -a /dev/$1$2 /dev/$1

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/$1$2 ||

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/$1$2 ||

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 3 ||

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 &&

[ $? -eq 0 ] && echo "$vgname-$lvname is mounted successfully!"

}

}  

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

#while [ 1 ];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 &&

[ $? -eq 0 ] && echo "$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 3

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