Richard, as usual you are right.
Ramesh, sorry. What about delete the reference to the volume (delete
volume <vol-name> discardata=YES) and then proceed with the backup
stgpool(s) bit?

Mauro, STM

> >ANR2116E UPDATE VOLUME: Access mode for volume DBI458 cannot be
changed to
> >"destroyed" - volume does not belong to a primary storage pool.
>
> Check the Admin Ref manual.  Only primary storage pool volumes can be
changed
> to Destroyed, for the purposed of recovery from a Backup Storage Pool.
>