I have always wondered why a number of my OpenVZ containers did not show the disk usage in ISPConfig. In a previous version, the command used to monitor the server disk usage was modified to "exclude" the simfs file system from the list of reported mount points. Ref 100-monitor_disk_usage.inc.php See: https://git.ispconfig.org/ispconfig/ispconfig3/commit/05481a4fa1a30e0879c2939f0eee19c8004efe04 I believe that "simfs" was incorrectly confused with "tmpfs" when making the change. The addition of the "-x simfs" to the "df" command prevents an OpenVZ container with ISPConfig from reporting Disk Usage correctly if it is using the 'simfs' filesystem. One other recent example of this is shown here: https://git.ispconfig.org/ispconfig/ispconfig3/issues/4329 Also, of note, the use of "awk" to filter the results line by line prevents the command from showing any further lines that begin with the same "Filesystem" field value. Example: This Proposed command shows the actual state of the container... Code: # df -hT -x tmpfs Filesystem Type Size Used Avail Use% Mounted on /dev/simfs simfs 4.0G 1.2G 2.9G 29% / devtmpfs devtmpfs 256M 0 256M 0% /dev ... while, the current code does not. Code: # df -hT -x simfs | awk '!x[$1]++' Filesystem Type Size Used Avail Use% Mounted on devtmpfs devtmpfs 256M 0 256M 0% /dev tmpfs tmpfs 256M 0 256M 0% /dev/shm
