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, including remote instances.

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.

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	Dimensions	Unit
md.health	a dimension per md array	failed disks

Per md array

Labels:

Label	Description
device	TBD
raid_level	TBD

Metrics:

Metric	Dimensions	Unit
md.disks	inuse, down	disks
md.mismatch_cnt	count	unsynchronized blocks
md.status	check, resync, recovery, reshape	percent
md.expected_time_until_operation_finish	finish_in	seconds
md.operation_speed	speed	KiB/s
md.nonredundant	available	boolean

Alerts

The following alerts are available:

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

Setup

Prerequisites

No action required.

Configuration

File

There is no configuration file.

Options

There are no configuration options.

Examples

There are no configuration examples.