node-exporter-textfile-collector-scripts

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Example:

node_md_info{md_device="md127", ... CheckStatus="75% complete", ...} 1

This value keeps changing, so we get 100 different timeseries as it goes from 0% to 100%. Although it's nice to be able to see this, I think it's label abuse.

Here's the raw mdadm --detail output:

# mdadm --detail /dev/md127
/dev/md127:
        Version : 1.2
  Creation Time : Wed Mar 15 14:32:11 2017
     Raid Level : raid10
     Array Size : 39069470720 (37259.55 GiB 40007.14 GB)
  Used Dev Size : 7813894144 (7451.91 GiB 8001.43 GB)
   Raid Devices : 10
  Total Devices : 11
    Persistence : Superblock is persistent

  Intent Bitmap : Internal

    Update Time : Mon Dec  9 18:13:48 2019
          State : clean, checking
 Active Devices : 10
Working Devices : 11
 Failed Devices : 0
  Spare Devices : 1

         Layout : near=2
     Chunk Size : 4096K

   Check Status : 75% complete

           Name : 127
           UUID : 00993e52:41fc1f0d:1f4457b0:a748d110
         Events : 618588

    Number   Major   Minor   RaidDevice State
       0       8       16        0      active sync set-A   /dev/sdb
       1       8       32        1      active sync set-B   /dev/sdc
       2       8       96        2      active sync set-A   /dev/sdg
       3       8      128        3      active sync set-B   /dev/sdi
       4       8      112        4      active sync set-A   /dev/sdh
       5       8       48        5      active sync set-B   /dev/sdd
       6       8        0        6      active sync set-A   /dev/sda
       7       8      144        7      active sync set-B   /dev/sdj
       8       8      160        8      active sync set-A   /dev/sdk
       9       8       64        9      active sync set-B   /dev/sde

      10       8       80        -      spare   /dev/sdf

Another problem is with "Rebuild Status" also being exposed as a label:

# mdadm --detail /dev/md127
...
Consistency Policy : resync

    Rebuild Status : 6% complete

              Name : 127
              UUID : c11df176:38c7bc39:48bb4c7f:47a8e782
            Events : 13302
...

resulting in label RebuildStatus="6% complete"