Here are the two nfs mounts we will be replacing:

wikidumpparse-nfs.svc.wikidumpparse.eqiad1.wikimedia.cloud:/srv/wikidumpparse/project	/mnt/nfs/labstore-secondary-project	
wikidumpparse-nfs.svc.wikidumpparse.eqiad1.wikimedia.cloud:/srv/wikidumpparse/home	/mnt/nfs/labstore-secondary-home

Steps:

• create new cinder volume, mount on wikidumpparse-nfs-1 as /srv/nfscopy
• rsync nfs to new volume: /srv/nfscopy/
• stop running services on humaniki-prod-bw to prevent race conditions <- which services write to nfs?
• unmount nfs from humaniki-prod-bw, remove nfs entries from fstab
• adjust puppet settings to prevent nfs re-mount from humaniki-prod-bw (project hiera "mount_nfs: false")
• one last rsync (again, to avoid races.) Run on wikidumpparse-nfs-1: "rsync -a /srv/wikidumpparse/* /srv/nfscopy/"
• detach cinder volume from wikidumpparse-nfs-1, attach to humaniki-prod-bw, mount as /srv/humanikivolume and add to fstab
• symlink /mnt/nfs/labstore-secondary-project to /srv/humanikivolume/project
• symlink /mnt/nfs/labstore-secondary-home to /srv/humanikivolume/home
• change /home link to /srv/humanikivolume/home
• reboot, confirm $home is working properly

Now the only thing that's a bit messed up is that you have references to /mnt/nfs/labstore-secondary-project which is just a symlink and not really an nfs mount; ideally you would update those to point directly to /srv/humanikivolume/project.

You also have remnants of the previous regime which can be deleted once you're convinced things are good:

• wikidumpparse-nfs-1 instance
• wikidumpparse-nfs volume