Infrastructure Software

Hi,

I'm new to ZFS and I have a situation where root filesystem is 100%.
It is configures in a ZFS pool, which is 136GB in total.

Here's an output of "zfs list":

NAME USED AVAIL REFER MOUNTPOINT
rpool 129G 4.52G 97K /rpool
rpool/ROOT 63.0G 4.52G 21K legacy
rpool/ROOT/s10s_u9wos_14a 63.0G 4.52G 63.0G /
rpool/dump 32.0G 4.52G 32.0G -
rpool/export 1.35G 4.52G 120K /export
rpool/export/home 1.35G 4.52G 1.35G /export/home
rpool/swap 33.0G 37.5G 16K -

Here's an output of zpool list:
NAME SIZE ALLOC FREE CAP HEALTH ALTROOT
rpool 136G 96.4G 39.6G 70% ONLINE -

Here's an output of "df -h /":
Filesystem size used avail capacity Mounted on
rpool/ROOT/s10s_u9wos_14a
134G 63G 4.5G 94% /

What I'm trying to understand is how is possible that I see about 70GB which are supposed to be free according to "df -h /" but I actually see that only 4.5GB are free.
In addition, there's an Oralce database which is reporting "out of disk space" in the alert log and the application which is connecting to databases freezes or becomes very slow.

I tried searching for large files but I don't see any larger than 300MB, and there aren't a lot of them.

I'd appreciate it if anyone could explain to me what I should look for and where are those missing 70GB...

Thanks,
Yair