Read the manual section on MMINFO in the Command Line Reference Guide... you can tune the following as you see fit:
[tt] mminfo -q "volume=000123" -r "volume(8),client(14),name(16),level,totalsize(8),ssflags,sscomp,ssbrowse,ssretent"[/tt]
The above will show all saveset info for volume 000123:
[tt] volume client name lvl total ssflags completed browse retent
000123 webserv8 / incr 4327 KB vF 12/29/08 01/29/09 01/29/09
000123 webserv8 / incr 4331 KB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /export/home incr 4 B vF 12/29/08 01/29/09 01/29/09
000123 webserv8 /export/home incr 4 B vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /u01 incr 59 MB vF 12/29/08 01/29/09 01/29/09
000123 webserv8 /u01 incr 60 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /u02 incr 6261 MB vF 12/29/08 01/29/09 01/29/09
000123 webserv8 /u02 incr 6261 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /u03 incr 4842 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /u04 incr 854 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /u05 incr 3646 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /usr incr 156 MB vF 12/29/08 01/29/09 01/29/09
000123 webserv8 /usr incr 156 MB vF 12/30/08 01/30/09 01/30/09
000123 webserv8 /var incr 13 MB vF 12/29/08 01/29/09 01/29/09
000123 webserv8 /var incr 13 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 / full 510 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 / incr 4944 KB vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /export/home full 1842 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 /export/home incr 4 B vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /opt full 510 KB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 /opt incr 4 B vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /u01 full 105 GB vF 12/31/08 01/30/09 01/31/09
000123 dbserver4 /u01 incr 972 MB vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /usr full 1412 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 /usr incr 4 B vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /usr/local full 1627 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 /usr/local incr 62 MB vF 12/31/08 01/31/09 01/31/09
000123 dbserver4 /var full 1030 MB vF 12/30/08 01/30/09 01/30/09
000123 dbserver4 /var incr 55 MB vF 12/31/08 01/31/09 01/31/09
[/tt]
You'll have to craft a script to do each and every volume you wish to list.
Read up on the "-o" option if you want to sort the resulting data.