parted /dev/vdb mklabel gpt
parted /dev/vdb mkpart primary 1 100%
mkfs.ext4 /dev/vdb1
mount /dev/vdb1 /opt/
vim /etc/fstab
/dev/vdb1 /opt/ ext4 defaults 0 0
mount -a
parted /dev/vdb mklabel gpt
parted /dev/vdb mkpart primary 1 100%
mkfs.ext4 /dev/vdb1
mount /dev/vdb1 /opt/
vim /etc/fstab
/dev/vdb1 /opt/ ext4 defaults 0 0
mount -a