OSD id 241 != my id 248: conversion from "ceph-disk" to "ceph-volume simple" destroys OSDs

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Hi all,

this is a follow-up on "reboot breaks OSDs converted from ceph-disk to ceph-volume simple".

I converted a number of ceph-disk OSDs to ceph-volume using "simple scan" and "simple activate". Somewhere along the way, the OSDs meta-data gets rigged and the prominent symptom is that the symlink block is changes from a part-uuid target to an unstable device name target like:

before conversion:

block -> /dev/disk/by-partuuid/9123be91-7620-495a-a9b7-cc85b1de24b7

after conversion:

block -> /dev/sdj2

This is a huge problem as the "after conversion" device names are unstable. I have now a cluster that I cannot reboot servers on due to this problem. OSDs randomly re-assigned devices will refuse to start with:

2021-03-02 15:56:21.709 7fb7c2549b80 -1 OSD id 241 != my id 248

Please help me with getting out of this mess.

Thanks and best regards,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14
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