MD RAID
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.
Setup
Prerequisites
No action required.
Configuration
File
There is no configuration file.
Options
There are no configuration options.
Examples
There are no configuration examples.
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 |