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Is it a RWO or RWX volume?

Hi, Derek, it is RWX voluem (Access Mode:ReadWriteMany)

Got it. RWX is based on the NFS filesystem. Looks the prometheus complains the NFS filesystem. https://github.com/prometheus/prometheus/issues/8530

Derek, thank you very much for your support. This is unexpected nuance for me. Where did you find information that the Longhorn uses NFS for RWX volumes? What about RWO?

RWX volume implementation https://longhorn.io/docs/1.3.1/advanced-resources/rwx-workloads/ RWO should work. You can give it a go.

I’ve checked default value for volume access mode inside rancher-monitoring helm chart which is used to deploy monitoring stack including prometheus and it’s value RWO. Looks like I’ve changed it and forgot but why I did this I don’t remember ))) anyway thank you so much for your help!

Leaving a note here: NFS is not a POSIX compatible filesystem. Thus, some services might encounter errors while using RWX volumes. cc. @salmon-doctor-9726 @famous-shampoo-18483 @famous-journalist-11332 @kind-alarm-73406