MD RAID

Plugin: proc.plugin Module: /proc/mdstat

Overview

This integration monitors the status of MD RAID devices.

This collector is supported on all platforms.

This collector supports collecting metrics from multiple instances of this integration.

Default Behavior

Auto-Detection

This integration doesn't support auto-detection.

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Setup

Prerequisites

No action required.

Configuration

Options

There are no configuration options.

via File

There is no configuration file.

Examples

There are no configuration examples.

Alerts

The following alerts are available:

Alert name	On metric	Description
Alert name mdstat_last_collected	On metricmd.disks	Descriptionnumber of seconds since the last successful data collection
Alert name mdstat_disks	On metricmd.disks	Descriptionnumber of devices in the down state for the ${label:device} ${label:raid_level} array. Any number > 0 indicates that the array is degraded.
Alert name mdstat_mismatch_cnt	On metricmd.mismatch_cnt	Descriptionnumber of unsynchronized blocks for the ${label:device} ${label:raid_level} array
Alert name mdstat_nonredundant_last_collected	On metricmd.nonredundant	Descriptionnumber of seconds since the last successful data collection

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per MD RAID instance

This scope has no labels.

Metrics:

Metric	Description	Dimensions	Unit
md.health	Faulty Devices In MD	a dimension per md array	failed disks

Per md array

Labels:

Label	Description
device	TBD
raid_level	TBD

Metrics:

Metric	Description	Dimensions	Unit
md.disks	Disks Stats	inuse, down	disks
md.mismatch_cnt	Mismatch Count	count	unsynchronized blocks
md.status	Current Status	check, resync, recovery, reshape	percent
md.expected_time_until_operation_finish	Approximate Time Until Finish	finish_in	seconds
md.operation_speed	Operation Speed	speed	KiB/s
md.nonredundant	Nonredundant Array Availability	available	boolean