# List LVM volumes for the container
lvs | grep vm-101
# Check the actual size and usage
lvdisplay /dev/pve/vm-101-disk-0
# Try to mount the container's rootfs temporarily to check space
mkdir -p /tmp/ct101-check
mount /dev/pve/vm-101-disk-0 /tmp/ct101-check
df -h /tmp/ct101-check
du -sh /tmp/ct101-check/* | sort -hr | head -20
# First, unmount the temporary mount
umount /tmp/ct101-check
# Resize the rootfs to 20GB (or 30GB if you plan to run many containers)
pct resize 101 rootfs 20G
# Now start the container
pct start 101