Is it possible to have / (root), /boot and swap partition on LVM device?

Solution Verified - Updated -

Issue

  • Can we have / (root), /boot and swap partition under LVM?
  • Is it possible to have / (root), /boot and swap partition on LVM device?
  • Booting from LVM without a separate /boot but having /boot directly on LVM
  • Can I boot directly from LVM without having /boot on a partition? So have the whole system use LVM? This would help me simplify the workflow to use LVM snapshots and mergeback technology to rollback updates.

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • LVM
  • grub2

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