feat: expose MD raid component devices#674
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SuperQ merged 7 commits intoprometheus:masterfrom Oct 25, 2025
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@SuperQ can you have a look at this please? |
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I'm pretty sure this is already at least partially implemented by the mdraid sysfs parsing, https://pkg.go.dev/github.com/prometheus/procfs@v0.15.1/sysfs#Mdraid Drawing attention once again to prometheus/node_exporter#1085 - I really think it's time to mark the old |
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I agree, I think we should focus the effort on the sysfs |
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@SuperQ can you please merge prometheus/node_exporter#3031 then - and I'll build on top of that to expose per-device state? |
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@robbat2 Sure, sounds good. |
Finomosec
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Oct 16, 2024
| Faulty: strings.Contains(match[3], "(F)"), | ||
| Spare: strings.Contains(match[3], "(S)"), | ||
| Journal: strings.Contains(match[3], "(J)"), | ||
| Replacement: strings.Contains(match[3], "(R)"), |
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This needs a rebase. |
Note: rebased on top of master for reformatting Signed-off-by: Singee <git@singee.me> Signed-off-by: Robin H. Johnson <rjohnson@coreweave.com>
Note: rebased on top of master for reformatting Signed-off-by: Singee <git@singee.me> Signed-off-by: Robin H. Johnson <rjohnson@coreweave.com>
Note: rebased on top of master for reformatting Signed-off-by: Singee <git@singee.me> Signed-off-by: Robin H. Johnson <rjohnson@coreweave.com>
Signed-off-by: Singee <git@singee.me>
Expose what component devices are part of a MD raid device, as well as the most common flags per-component. This will enable a future node_exporter metric showing which component of a RAID had failed. Signed-off-by: Robin H. Johnson <robbat2@orbis-terrarum.net> Signed-off-by: Robin H. Johnson <rjohnson@coreweave.com>
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Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
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Done |
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
sklyfr
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Jul 10, 2025
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| // Some additional flags that are NOT exposed in procfs today; they may | ||
| // be available via sysfs. | ||
| // In_sync, Bitmap_sync, Blocked, WriteErrorSeen, FaultRecorded, | ||
| // BlockedBadBlocks, WantReplacement, Candidate, ... |
discordianfish
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Sep 17, 2025
SuperQ
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Oct 25, 2025
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Expose what component devices are part of a MD raid device, as well as the most common flags per-component. This will enable a future node_exporter metric showing which component of a RAID had failed.
This PR builds up top of PR 505, implementing the requested changes to detect the known RAID types on a given system.
Reference: #505
Signed-off-by: Robin Johnson robbat2@orbis-terrarum.net