Sometimes the swap partition is not enabled after reboot even if added entry in /etc/fstab with /dev/. Better to add swap partition entry in /etc/fstab using UUID. To get UUID of newly created swap partition. Run command 'blkid'
For mounting your new partition, you could: mount /dev/vdb1 /newdisk && cat /etc/mtab grep -i vdb1 >> /etc/fstab && systemctl daemon-reload. That won’t use the UUID though, so you could edit that part. Then findmnt -verify
That means, no need to perform the mount command if we are going for permanent mounting with fstab...suppose if i'm performing both like mount command and fstab same as per this video, is there any concern?