Shell脚本一键扩展LVM新分区
#!/bin/bash##在线扫描新磁盘
##Step1: Recognize New Hard Disk##
Logdir=~/disk_log
if [ ! -d $Logdir ];then
mkdir -p $Logdir
fi
SCSIHost=`ls -l /sys/class/scsi_host/ | grep "host" | tr -s " " | cut -d" " -f9`
for host in $SCSIHost
do
sudo echo "- - -" | sudo tee /sys/class/scsi_host/$host/scan >/dev/null 2>&1
done
if [ $? -eq 0 ];then
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step1 -> SCSI Disk Rescanning is Successful" >> $Logdir/log_$HOSTNAME.txt
else
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step1 -> SCSI Disk Rescanning is Faied, Script is Interrupted" >> $Logdir/log_$HOSTNAME.txt
fi
##创建新的磁盘分区
##Step2: Create New Disk Partition##
NewSD=`sudo fdisk -l | grep "Disk /dev/sd"| sort | tail -1 | cut -d" " -f2 | cut -d":" -f1`
sudo fdisk $NewSD > $Logdir/log_$HOSTNAME.txt
else
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step2 -> SCSI Disk Partition Creation is Faied, Script is Interrupted" >> $Logdir/log_$HOSTNAME.txt
exit
fi
##LVM在线扩容
##Step3: Extend Disk by LVM##
NewPV=`sudo fdisk -l | grep ^$NewSD | cut -d" " -f1`
VG=`sudo vgs | tail -1 | awk '{print$1}'`
LVRoot=`sudo lvscan | grep ACTIVE | grep root | cut -d"'" -f2`
sudo pvcreate $NewPV && sudo vgextend $VG $NewPV
if [ $? -eq 0 ];then
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step3 -> VG Exention is Successful" >> $Logdir/log_$HOSTNAME.txt
sudo lvextend -r -l +100%FREE $LVRoot
else
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step3 -> VG Exention is Failed" >> $Logdir/log_$HOSTNAME.txt
exit
fi
if [ $? -eq 0 ];then
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step3 -> LV and File System Extention is Successful" >> $Logdir/log_$HOSTNAME.txt
else
echo "`date+"%Y/%m/%d %T %Z %:::z"`: Step3 -> LV and File System Extention is Faied, Script is Interrupted" >> $Logdir/log_$HOSTNAME.txt
exit
fi
exit 0
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