I have created a calculated item with a formula that will calculate the rate at which my volume is being used up, and in the math if I divide the free space by the rate I get time to fill.
Below is my formula:
(last("vfs.fs.size[/boot,free]")/((last("vfs.fs.size[/boot,used]") - (prev("vfs.fs.size[/boot,used]")/(time-prev_time))
Every time I run it I get the error:"Cannot evaluate expression: expected numeric token at "time-prev_time))"."
So I assumed it was something with the key for time, and the way I used it but I verified it in this doc https://www.zabbix.com/documentation...fig/items/item that time-prev_time is an actual thing.
So I am not sure what the issue is here? Any help would be appreciated.
Below is my formula:
(last("vfs.fs.size[/boot,free]")/((last("vfs.fs.size[/boot,used]") - (prev("vfs.fs.size[/boot,used]")/(time-prev_time))
Every time I run it I get the error:"Cannot evaluate expression: expected numeric token at "time-prev_time))"."
So I assumed it was something with the key for time, and the way I used it but I verified it in this doc https://www.zabbix.com/documentation...fig/items/item that time-prev_time is an actual thing.
So I am not sure what the issue is here? Any help would be appreciated.