# 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 ](https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf) | md.disks | number of seconds since the last successful data collection | | [ mdstat_disks ](https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf) | 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 ](https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf) | md.mismatch_cnt | number of unsynchronized blocks for the ${label:device} ${label:raid_level} array | | [ mdstat_nonredundant_last_collected ](https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf) | 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.