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fix(host): negative diskio metric of container (#24084)

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This commit is contained in:
Zexi Li
2026-01-14 20:26:30 +08:00
committed by GitHub
parent fe8c169c03
commit 2d3a4fd402
1 changed files with 16 additions and 4 deletions
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20
pkg/hostman/hostmetrics/container_metrics.go
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@@ -686,10 +686,22 @@ func (m *SGuestMonitor) getCadvisorDiskIoMetrics(cur stats.DiskIoStats, prev map
if diffTime > 0 && prev != nil {
prevStat, ok := prev[devName]
if ok {
devR.ReadBPS = float64(stat.ReadBytes-prevStat.ReadBytes) / diffTime
devR.WriteBPS = float64(stat.WriteBytes-prevStat.WriteBytes) / diffTime
devR.ReadIOPS = float64(stat.ReadCount-prevStat.ReadCount) / diffTime
devR.WriteIOPS = float64(stat.WriteCount-prevStat.WriteCount) / diffTime
// 检查计数器是否回退（可能是容器重启导致）
if stat.ReadCount < prevStat.ReadCount || stat.WriteCount < prevStat.WriteCount ||
stat.ReadBytes < prevStat.ReadBytes || stat.WriteBytes < prevStat.WriteBytes {
log.Warningf("Disk IO counters decreased: guest=%s(%s), device=%s, ReadCount %d -> %d, WriteCount %d -> %d, ReadBytes %d -> %d, WriteBytes %d -> %d. Possible container restart, skipping rate calculation.",
m.Name, m.Id, devName,
prevStat.ReadCount, stat.ReadCount,
prevStat.WriteCount, stat.WriteCount,
prevStat.ReadBytes, stat.ReadBytes,
prevStat.WriteBytes, stat.WriteBytes)
// 跳过计算，避免产生负值
} else {
devR.ReadBPS = float64(stat.ReadBytes-prevStat.ReadBytes) / diffTime
devR.WriteBPS = float64(stat.WriteBytes-prevStat.WriteBytes) / diffTime
devR.ReadIOPS = float64(stat.ReadCount-prevStat.ReadCount) / diffTime
devR.WriteIOPS = float64(stat.WriteCount-prevStat.WriteCount) / diffTime
}
}
}
ret[devName] = devR