Root partition 90% full

Question

UTM 9.510-5 on a dedicated server with 300 Gig hard drive. 
 I'm getting alerts that the root disk is at 90%. UTM updates are failing because of lack of disk space. 
 I read the threads on here about this and found that pgsql was at 1.6 Gigs, so I ran postgressql92 rebuild and that shrunk it. 
 I also deleted the /var/storage/cores from years ago. 
 
 To my surprise, df -h STILL reports exactly the same usage. Not one byte different. 
 Filesystem Size Used Avail Use% Mounted on /dev/sda6 5.2G 4.4G 514M 90% / udev 3.9G 80K 3.9G 1% /dev tmpfs 3.9G 76K 3.9G 1% /dev/shm /dev/sda1 331M 16M 295M 5% /boot /dev/sda5 115G 4.4G 104G 5% /var/storage /dev/sda7 150G 233M 142G 1% /var/log /dev/sda8 6.1G 88M 5.7G 2% /tmp /dev 3.9G 80K 3.9G 1% /var/storage/chroot-clientlessvpn/dev tmpfs 3.9G 0 3.9G 0% /var/sec/chroot-httpd/dev/shm /dev 3.9G 80K 3.9G 1% /var/sec/chroot-openvpn/dev /dev 3.9G 80K 3.9G 1% /var/sec/chroot-ppp/dev /dev 3.9G 80K 3.9G 1% /var/sec/chroot-pppoe/dev /dev 3.9G 80K 3.9G 1% /var/sec/chroot-pptp/dev /dev 3.9G 80K 3.9G 1% /var/sec/chroot-pptpc/dev /dev 3.9G 80K 3.9G 1% /var/sec/chroot-restd/dev tmpfs 3.9G 0 3.9G 0% /var/storage/chroot-reverseproxy/dev/shm /var/storage 115G 4.4G 104G 5% /var/sec/chroot-snmp/var/storage /var/log 150G 233M 142G 1% /var/sec/chroot-snmp/var/log /var/storage/chroot-smtp/spool 115G 4.4G 104G 5% /var/sec/chroot-httpd/var/spx/spool /var/storage/chroot-smtp/spx 115G 4.4G 104G 5% /var/sec/chroot-httpd/var/spx/public/images/spx tmpfs 3.9G 108K 3.9G 1% /var/storage/chroot-smtp/tmp/ram tmpfs 3.9G 67M 3.8G 2% /var/storage/chroot-http/tmp /var/sec/chroot-afc/var/run/navl 5.2G 4.4G 514M 90% /var/storage/chroot-http/var/run/navl 
 
 I ran du -shx * | sort -rh | head 
 pgsql shrunk to 36K. 
 Still out of disk space. The only big file I could find was swapfile, taking 4 gigs. 
 if I go to /var/sec/chroot-afc/var/run/navl, all I see is a "socket" file.

BAlfson · Answer

This is virtually always caused by letting too many Up2Dates download without applying them. You've probably already re-installed, so this is for others in the future. 
 Look at 
 du -shx /var/up2date/sys/* 
 First, check some things. As root at the command line: 
 version 
 cc get up2date system_download_interval 
 This returns: 10 = Manual or Monthly, 0 = Every 15 mins, etc. Note this! 
 Let's set the interval to Manual: 
 cc set up2date system_download_interval 10 
 Now, let's go to the directory and see what we need to delete: 
 cd /var/up2date/sys ll 
 Delete enough of the newest files to free up at least one GB and run the following command: 
 /sbin/auisys.plx --showdesc 
 Then install in WebAdmin. After the Up2Dates are completed, change 'Firmware download interval' back on the 'Configuration' tab or go back to the command line and set it there. 
 Cheers - Bob