Requirements describe

Hundreds of existing servers have added a new piece 10GB Size of virtual disk , These disks need to be added to the specified VG In the middle . The device file name of the disk may be /dev/vdb、/dev/vdc、/dev/vdd etc. （/dev/vda Is the disk on which the system partition is located ）.

scripting

#!/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