ISTI Open Access

I already deleted some files, this is the actual occupation:

root@new-openportal:/# df -h 
Filesystem      Size  Used Avail Use% Mounted on
udev            3.8G     0  3.8G   0% /dev
tmpfs           782M  456K  782M   1% /run
/dev/xvda2       12G   12G  797M  94% /
tmpfs           3.9G     0  3.9G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/xvda3      100G   15G   86G  15% /data
tmpfs           782M     0  782M   0% /run/user/1000

I noticed that the bigger directory is /opt/matomo-openaire (6.6 GB)

Could you increase the dimension of /dev/xvda2 ?