Recreating an XFS file system with `ftype=1`

My proposed method seemed to work fine. Here's my procedure:

1. Boot into CentOS-7-x86_64-LiveGNOME-1804.iso.
2. Open a terminal and sudo -s.
3. Scan for LVM volumes: vgscan
4. Change into the appropriate volume group (centos in my case): vgchange -ay centos
5. Scan for the logical volumes in that group: lvscan
6. Create a mount point for the root FS: mkdir /mnt/root
7. Mount the logical volume corresponding to the root FS: mount /dev/centos/root /mnt/root
8. Dump to remote host: xfsdump -J - /mnt/root | ssh <host> 'cat >/data/rootfs.dump'
9. Unmount the root FS: umount /mnt/root
10. Recreate the root FS: mkfs.xfs -f -n ftype=1 /dev/centos/root
11. Mount the recreated root FS: mount /dev/centos/root /mnt/root
12. Restore from remote host: ssh <host> 'cat /data/rootfs.dump' | xfsrestore -J - /mnt/root
13. Reboot. Everything should be as it was before, except xfs_info / should now show ftype=1.

Note: My xfsdump call resulted in a number of warnings of the form

xfsdump: WARNING: failed to get bulkstat information for inode 10485897

According to someone who appears to be an XFS developer (link):

They can be ignored - they are inodes that were previously unlinked, but are still partially there on the snapshot volume, and visible to the by-handle interfaces that xfsdump is using to extract all of the inodes in the snapshot.

I can confirm this worked for me too! Thank you. I pulled the original UUID using xfs_admin -u /dev/centos/root after step 5. I then used xfs_admin -U UUID /dev/centos/root after step 10. One additional step I did was after step 11, I set selinux to permissive (setenforce 0) as my first attempt produced selinux warnings or errors. I don't know if this was necessary but the errors went away.