in below/model/src/collector.rs [147:160]
fn is_all_zero_disk_stats(disk_stats: &procfs::DiskStat) -> bool {
disk_stats.read_completed == Some(0)
&& disk_stats.write_completed == Some(0)
&& disk_stats.discard_completed == Some(0)
&& disk_stats.read_merged == Some(0)
&& disk_stats.read_sectors == Some(0)
&& disk_stats.time_spend_read_ms == Some(0)
&& disk_stats.write_merged == Some(0)
&& disk_stats.write_sectors == Some(0)
&& disk_stats.time_spend_write_ms == Some(0)
&& disk_stats.discard_merged == Some(0)
&& disk_stats.discard_sectors == Some(0)
&& disk_stats.time_spend_discard_ms == Some(0)
}