What's everyone doing to ensure persistent drive labels for reporting (Grafana), etc. ?

 

My sdg and sdh swapped labels with sdi and sdj. I thought I could take advantage of hotswap to correct it - DON'T DO THIS (I'm rebuilding parity now because of it.)

 

So is there a fix or do we just accept some level of randomness?

You can never rely on the stX type names not changing as they are assigned dynamically during the booting process so various timing factors can affect the order they get assigned.   Instead you can use one of the names shown under the /dev/by-* type folders if you want an invariant name

I think @falconexe had a way to replace sdX by the disk S/N in his UUD topic :

 

Don't remember the details and don't have much time to look for it right now.

2 hours ago, ChatNoir said:

I think @falconexe had a way to replace sdX by the disk S/N in his UUD topic

Thanks. I don't see it in the dashboard (which instead shows a configurable "cache devices" setting) but I'll dig into the thread. Clever trick installing smartmontools in the container, I had been using HDDTemp docker.

 

Back from work.

I remembered correctly, not sure if it applies to everything you want to do.

Quote

To Use Static Drive Serial Numbers in Grafana (For DiskIO Queries) Do the Following:

Edit telegraf.conf > [[inputs.diskio]] > Add device_tags = ["ID_SERIAL"] > Use ID_SERIAL Flag in Grafana

Now Upon Booting, You Don't Have to Worry About SD* Mounts Changing (So Your Graphs Don't Get Messed Up!)

You Can Also Set Overrides on the Query Fields to Map the Serial Number to a Common Disk Name Like "DISK01" etc.

 

That's great, thanks for finding it. My setup's a lot cleaner now.

I think that was my only sdX dependency so problem solved.