Steps to reproduce:

1. add host, install agent, apply template Linux by Zabbix agent active (stock, not modified at all)
2. wait until mntpoint is discovered, and filed with stuff
3. observe trigger not firing

df -h:
/dev/mapper/stor11tblvm   17T   17T   14M 100% /stor11tb2lv

full.

# sudo -u zabbix df -h | grep stor
/dev/mapper/storage-stor11tblvm   17T   17T   14M 100% /stor11tb2lv

works here as well, no crazy security policy applied

gui screenshots attached. No problems indicated, but latest data shows 99% pused. Macros inherited correctly.

I've hit against this issue several times - versions 6.2 and 6.0. Only on relatively larger fs > 12TB at last.  I've also observed situtation, where trigger fired and disapeared after unknown time (was unable to reproduce this situation though). Seems like some condition is making trigger shut.

Monitored host is virtual machine run on Proxmox.