The zpool_influxdb command outputs incorrect information for the the scan time remaining

[ajaxous]

System information

Type	Version/Name
Distribution Name	Fedora
Distribution Version	39
Kernel Version	6.10.12-100
Architecture	x86-64
OpenZFS Version	2.2.6

Describe the problem you're observing

The value for remaining_t as reported by zpool_influxdb --no-histograms in the zpool_scan_stats section is not correct.

Describe how to reproduce the problem

Just run the command above during a scan

The root cause appears to be ~line 223 in zpool_influxdb.c :

remaining_time = ps->pss_to_examine - examined / rate;

The code is subtracting a unit of seconds (examined / rate) from a unit of bytes (ps->pss_to_examine ).

I believe the correct equation would be to divide the difference by the rate:

remaining_time = ( ps->pss_to_examine - examined ) / rate;

Include any warning/errors/backtraces from the system logs