amazon ec2 – aws optimized linux fills up disk space

i have a spring start application that runs inside docker on aws ecs optimized linux,
my instance is associated with a volume of 100 GB ebs, when I run "menu info" in case I got that "used data space:" corresponds to about 90 Go, even if I do lvs or lvdisply, I can really see that the storage is saturated
but when I do df -h, I see that the storage is not full and that I can not find any 90 GB data in the instance.
My question is where can I find the 90 GB of data and how can I delete them ????
I think it's like that something saved in the virtual disk and I can not find it

Thank you