Disk space alerts - Wrong data

[phil570]

Hello all,

I noticed I receive wrong data when I receive a disk space alert.


Example :

A few days ago I received an alert on a server because the /home partition. I'm using the template provided with Zabbix for Linux hosts monitoring (Template OS Linux by Zabbix agent).

• Data in the alert mail :

Start time : 2022.07.27 15:39:32
Operational data : Space used: 3.2 GB of 4.5 GB (90.99 %)

• Data in the resolution mail :

Resolved time : 2022.07.27 15:42:32
Operational data : Space used: 4.25 GB of 4.5 GB (75.16 %)

The percentage is not correct, and if I compare to the values found in Monitoring > Latest Data, values don't match.

• Values received during the alert timeframe :

2022-07-27 15:43:40
3432525824

2022-07-27 15:42:40
3432517632

2022-07-27 15:41:40
4566740992

2022-07-27 15:40:40
4566745088

2022-07-27 15:39:40
4287225856

2022-07-27 15:38:40
3432513536

2022-07-27 15:37:40
3432509440

The notification uses the macro {EVENT.OPDATA} to display the value in the mail.

The template expression is (did not modify it) :

[B]last([/B][URL="https://zabbix.lan.lu-cix.lu/zabbix/disc_prototypes.php?form=update&itemid=29226&parent_discoveryid=29204&context=template"]/Template OS Linux by Zabbix agent/vfs.fs.size[{#FSNAME},pused][/URL][B])[/B]>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and (([B]last([/B][URL="https://zabbix.lan.lu-cix.lu/zabbix/disc_prototypes.php?form=update&itemid=29225&parent_discoveryid=29204&context=template"]/Template OS Linux by Zabbix agent/vfs.fs.size[{#FSNAME},total][/URL][B])[/B]-[B]last([/B][URL="https://zabbix.lan.lu-cix.lu/zabbix/disc_prototypes.php?form=update&itemid=29224&parent_discoveryid=29204&context=template"]/Template OS Linux by Zabbix agent/vfs.fs.size[{#FSNAME},used][/URL][B])[/B])<5G or [B]timeleft([/B][URL="https://zabbix.lan.lu-cix.lu/zabbix/disc_prototypes.php?form=update&itemid=29226&parent_discoveryid=29204&context=template"]/Template OS Linux by Zabbix agent/vfs.fs.size[{#FSNAME},pused][/URL],1h,100[B])[/B]<1d)

Zabbix server version : Zabbix - version 6.0.6
Zabbix server version : zabbix Agent 2 - version 6.0.3


Is someone having the same issue? Did someone manage to fix this?

Thanks,
Phil