one of my biggest complaints about ASM is the lack of the ability to do the equivalent of “du -hs *” to view the size of all the directories. I found a little piece of shell script that does just this. It is extremely slow but it is very helpful!
dg=RECO; for dir in $(asmcmd ls $dg); do echo $dg/$dir; asmcmd du $dg/$dir; done
Just change the first argment “dg=RECO” to the actual disc group you want to examine.