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FAS2040: Volume 'vol0' cannot be resized below 133 GB on this appliance because it is the root volume.

New FAS2040 filer setup.     With ONTAP 7.3,   the vol0 minimum size was 13GB.    Now with ONTAP 8.0.2,  I cannot resize below 133GB?  What gives?   Any way around this?

hqna2> vol size vol0 -10g

vol size: Volume 'vol0' cannot be resized below 133 GB on this appliance because it is the root volume

hqna2> vol status -v

         Volume State           Status            Options                     

           vol0 online          raid4, flex       root, diskroot, nosnap=off, 

                                                  nosnapdir=off, minra=off,

                                                  no_atime_update=on, nvfail=off,

                                                  ignore_inconsistent=off,

                                                  snapmirrored=off,

                                                  create_ucode=on,

                                                  convert_ucode=on,

                                                  maxdirsize=28835,

                                                  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=0,

                                                  extent=off,

                                                  try_first=volume_grow,

                                                  read_realloc=off,

                                                  snapshot_clone_dependency=off,

                                                  nbu_archival_snap=off

                         Volume UUID: e17988c0-e42b-11e0-aaa9-00a0984bdf30

                    Containing aggregate: 'aggr1'

                Plex /aggr1/plex0: online, normal, active

                    RAID group /aggr1/plex0/rg0: normal

          Snapshot autodelete settings for vol0:

                                                  state=on

                                                  commitment=try

                                                  trigger=volume

                                                  target_free_space=20%

                                                  delete_order=oldest_first

                                                  defer_delete=user_created

                                                  prefix=(not specified)

                                                  destroy_list=none

          Volume autosize settings:

                                        state=off

hqna2> version

NetApp Release 8.0.2 7-Mode: Mon Jun 13 14:14:26 PDT 2011

hqna2*> df

Filesystem              kbytes       used      avail capacity  Mounted on

/vol/vol0/           132487588    2008696  130478892       2%  /vol/vol0/

/vol/vol0/.snapshot    6973020       6508    6966512       0%  /vol/vol0/.snapshot


FAS2040: Volume 'vol0' cannot be resized below 133 GB on this appliance because it is the root volume.

Unfortunately NetApp dramatically increased the minimum size of the root volume in Ontap 8 and there is no supported way to get around it:

http://now.netapp.com/NOW/knowledge/docs/ontap/rel802/html/ontap/sysadmin/GUID-94356B0F-EB14-43E5-9AEC-8EDDC6AA02AA.html

BTW, it is a bit surprising that the documentation (160 GB) does not match the limit Ontap 8 actually reports (133 GB).