TrueNAS - no trigger or alert when ZFS pool is above defined percentage value.

[beriapl]

I successfully set up monitoring for my TrueNAS by official SNMP integration/template from zabbix.
However, I have a strange issue with alerts about ZFS pool usage - they are not generated, and I have no idea why.
I have zabbix 7.0.6 and I'm using TrueNAS CORE by SNMP.

There is a trigger definition using two macros:
{$ZPOOL.PUSED.MAX.WARN} - value 80
{$ZPOOL.PUSED.MAX.CRIT} - value 90

All values are watched properly, but my zpool is currently at 99.32 usage and I never got any alert on the zabbix.

[cyber]

How much free space you still have?
If you look here https://www.zabbix.com/integrations/truenas, then it says "2 conditions have to match"...

Two conditions should match:
1. The first condition - utilization of the space should be above {$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"}%.
2. The second condition - the pool free space is less than {$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}

by default free space is set to 5G...
So if you still have more thatn 5G of gree space there... full condition is not matched.. only half..

[beriapl]

Ok, I've got like 200GB free space left, but is there any way to remove that condition and base only on %?

ZFS do not work well if it is more than 80%

That's actual alert on TrueNAS: Space usage for pool "backup" is 96%. Optimal pool performance requires used space remain below 80%.

[cyber]

Remove part of the trigger condition ...