Options on commands like mminfo and nsrinfo should help. Check Command reference guide.

For example, you could see all volumes:

mminfo -q "family=tape" -r"volume"

Try mminfo -m

If you need it more specific: mminfo -a -q"family=tape|disk" -r"volflags(7),volume(24),written,%used,volretent,read,mounts,capacity"

mminfo -m gives me the info

How can I see the pool of the volume??

I'm not sure what you're looking for here, but if it's what savesets are on a single tape try

mminfo -avot -q volume=$TAPE

If you are trying to get all tapes that were written to and what pools those tapes are in for a particular time frame try

mminfo -t "1 day ago" -r volume,pool

"man mminfo is your friend" it has lots of examples and references to the various options and parameters

mminfo -av -r volume,pool

After the '-r', you list the columns you want to see.  The man page will tell you all the columns that are available:

http://www.ipnom.com/Legato-NetWorker-Commands/mminfo.html

-Bobby

mminfo -av -r volume,pool

Worked like a charm, thanks.