I have realized, or think I figured it out ;), that Rockstor is not doing any TRIM on mounted SSDs. Nor by using discard as a mount optione (perhaps not the best option anyhow) or using the fstrim.timer option (or a cron job) to trim unused data from SSDs and keep them live longer.
Can this be implemented, for me, I am running rockstor on a small SSD which makes the system just horrible fast and applications like plex which huge databases more than usable
Enable TRIM would be a great idea on one or the other way.
Some documentation I found, but there is for sure more out there anyhow
I resolved it in the meantime using a weekly cronjob and a script found at on of the articles mentioned above
create file and open in nano
copy and paste the script
#!/bin/sh LOG=/var/log/fstrim.log echo [ $(date) ] $(/sbin/fstrim -v / 2>&1) >> $LOG echo [ $(date) ] $(/sbin/fstrim -v /home 2>&1) >> $LOG
set the executable flag
chmod +x /etc/cron.weekly/fstrim
do a testrun
open the log file
cat /var/log/fstrim.log [ Mon Sep 14 13:17:49 CEST 2015 ] /: 67.8 GiB (72746291200 bytes) trimmed [ Mon Sep 14 13:19:10 CEST 2015 ] /home: 67.8 GiB (72749588480 bytes) trimmed