You can do this without rebooting in CentOS 7. Your Physical LVM volume will now span the rest of the drive and you can create or extend logical volumes into that space. Resize the LVM PVĪfter your system rebooted invoke pvresize /dev/sda2. This step is neccessary so the partition table gets re-read.
You will get an error message from partprobe that the partition table couldn't be reread (because the disk is in use). If everything looks right, issue w to write the partition table to disk. Issue p to review your new partition layout and make sure the start of the new second partition is exactly where the old second partition was. Issue t followed by 2 followed by 8e to toggle the partition type of your new second partition to 8e (Linux LVM). Make sure the end is at the end of the disk (usually the default). Make sure the start equals the start of the partition table you printed earlier. Issue n to create a new second partition. Now issue d followed by 2 to remove the second partition.
Issue p to print your current partition table and copy that output to some safe place.
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