50 lines
2.2 KiB
Markdown
50 lines
2.2 KiB
Markdown
# mdstat Input Plugin
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The mdstat plugin gathers statistics about any Linux MD RAID arrays configured on the host
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by reading /proc/mdstat. For a full list of available fields see the
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/proc/mdstat section of the [proc man page](http://man7.org/linux/man-pages/man5/proc.5.html).
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For a better idea of what each field represents, see the
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[mdstat man page](https://raid.wiki.kernel.org/index.php/Mdstat).
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Stat collection based on Prometheus' mdstat collection library at https://github.com/prometheus/procfs/blob/master/mdstat.go
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### Configuration:
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```toml
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# Get kernel statistics from /proc/mdstat
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[[inputs.mdstat]]
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## Sets file path
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## If not specified, then default is /proc/mdstat
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# file_name = "/proc/mdstat"
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```
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### Measurements & Fields:
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- mdstat
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- BlocksSynced (if the array is rebuilding/checking, this is the count of blocks that have been scanned)
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- BlocksSyncedFinishTime (the expected finish time of the rebuild scan, listed in minutes remaining)
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- BlocksSyncedPct (the percentage of the rebuild scan left)
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- BlocksSyncedSpeed (the current speed the rebuild is running at, listed in K/sec)
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- BlocksTotal (the total count of blocks in the array)
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- DisksActive (the number of disks that are currently considered healthy in the array)
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- DisksFailed (the current count of failed disks in the array)
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- DisksSpare (the current count of "spare" disks in the array)
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- DisksTotal (total count of disks in the array)
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### Tags:
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- mdstat
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- ActivityState (`active` or `inactive`)
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- Devices (comma separated list of devices that make up the array)
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- Name (name of the array)
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### Example Output:
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```
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$ telegraf --config ~/ws/telegraf.conf --input-filter mdstat --test
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* Plugin: mdstat, Collection 1
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> mdstat,ActivityState=active,Devices=sdm1\,sdn1,Name=md1 BlocksSynced=231299072i,BlocksSyncedFinishTime=0,BlocksSyncedPct=0,BlocksSyncedSpeed=0,BlocksTotal=231299072i,DisksActive=2i,DisksFailed=0i,DisksSpare=0i,DisksTotal=2i,DisksDown=0i 1617814276000000000
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> mdstat,ActivityState=active,Devices=sdm5\,sdn5,Name=md2 BlocksSynced=2996224i,BlocksSyncedFinishTime=0,BlocksSyncedPct=0,BlocksSyncedSpeed=0,BlocksTotal=2996224i,DisksActive=2i,DisksFailed=0i,DisksSpare=0i,DisksTotal=2i,DisksDown=0i 1617814276000000000
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```
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