How to migrate the root volume on a NetApp

Need to switch your root volume (vol0) to a different aggregate on a NetApp?

I performed the following on a NetApp FAS2020 running Data OnTap 7.3.5.1

WARNING: IF DONE INCORRECTLY THIS COULD RESULT IN YOUR NETAPP BEING UNABLE TO BOOT. PROCEED ARE YOUR OWN RISK. You may want to consider speaking with NetApp directly instead of following these instructions. They can be reached at 1-888-463-8277 if you are in Canada or the United States.

1.    Determine the current size of vol0

netapp> vol size vol0
vol size: Flexible volume 'vol0' has size 30g.

2.    Create a new vol0 of the same size on the new aggregate

netapp> vol create vol0new aggr1 30g

3.    Verify NDMP is running on the NetApp

netapp> ndmpd status
ndmpd ON.
No ndmpd sessions active.

4.    NDMP copy the contents of the original vol0 to the new vol0new

netapp> ndmpcopy /vol/vol0 /vol/vol0new

5.    Set the new vol0 as the root for the filer

netapp> vol options vol0new root

6.    Reboot the filer

netapp> reboot

7.    Verify that vol0new is the root volume and the NetApp booted off it

netapp> vol options vol0
nosnap=off, nosnapdir=off, minra=off,
no_atime_update=off, nvfail=off, ignore_inconsistent=off,
snapmirrored=off, create_ucode=on, convert_ucode=on, maxdirsize=9175,
schedsnapname=ordinal, fs_size_fixed=off, compression=off,
guarantee=volume, svo_enable=off, svo_checksum=off, svo_allow_rman=off,
svo_reject_errors=off, no_i2p=off, fractional_reserve=100, extent=off,
try_first=volume_grow, read_realloc=off, snapshot_clone_dependency=off,

netapp> vol options vol0new
root, diskroot, nosnap=off, nosnapdir=off, minra=off, no_atime_update=off, nvfail=off,
ignore_inconsistent=off, snapmirrored=off, create_ucode=on,
convert_ucode=on, maxdirsize=9175, schedsnapname=ordinal,
fs_size_fixed=off, compression=off, guarantee=volume, svo_enable=off,
svo_checksum=off, svo_allow_rman=off, svo_reject_errors=off,
no_i2p=off, fractional_reserve=100, extent=off, try_first=volume_grow,
read_realloc=off, snapshot_clone_dependency=off

Verify that vol0new’s options start with “root, diskroot,” and that vol0 does not

8.    Offline the old root volume (vol0)

netapp> vol offline vol0

9.    Destroy the old root volume (vol0)

netapp> vol destroy vol0

10.    Rename the new vol0new to vol0

netapp> vol rename vol0new vol0

11.    Verify the rename took

netapp> df -sh