>
> I'm struggling to unbderstand what is the correct way to remove a
> working disk and replace it (e.g. for a disk upgrade) while keeping the
> same OSD ID. I did this several times following this procedure:
>
> https://docs.ceph.com/en/reef/cephadm/services/osd/#replacing-an-osd
>
> every time facing a different issue. This time it happened that after
> removal the OSD was marked as destroyed, so I went on with disk
> replacement and then with:
>
> ceph orch apply osd --all-available-devices
>
> but this created a new OSD with a new ID instead of reusing the old one,
> which remained in destroyed state.
>
I used to ask this question also. But there is no need to have it the same
number. You should not care about this. Having said that, last time I checked
it is just using correct number.
This is from old manual I have, where you can set the number
sudo -u ceph ceph-osd -i 14 --mkfs --osd-uuid
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