需求描述

现有几百台服务器新加了一块10GB大小的虚拟磁盘，需要将这些磁盘都加到指定的VG中去。磁盘的设备文件名可能为 /dev/vdb、/dev/vdc、/dev/vdd 等（/dev/vda 是系统分区所在的磁盘）。

脚本编写

#!/bin/bash
echo "Summary of fdisk -l:"
fdisk -l | grep vd
fdisk -l | grep vd > ./checkDisk_fdisk_tmpfile
echo "Summary of pvscan:"
pvscan
pvscan > ./checkDisk_pvs_tmpfile
for x in /dev/vd[^a]*
do
   echo "Checking ${x} ..."
   if grep ${x} ./checkDisk_pvs_tmpfile
   then
       continue
   else
       echo "${x} is not used for PV."
       if grep ${x} ./checkDisk_fdisk_tmpfile | grep '10.7 GB'
       then
          echo "${x} is 10GB. Now creating PV with ${x} ..."
          pvcreate ${x}
          vgextend rootvg ${x}
       fi
   fi
done

echo "All vdisk are checked. Summary of pvscan:"
pvscan