Moving OSDs to other hosts with cephadm

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I recently had a server (named aladdin) that was part of my home cluster die.  It held 6 out of 32 OSDs, so to prevent a whole bunch of data movement I connected them to my desktop using three dual-SATA docks and started the OSDs with 'ceph-volume lvm activate --all'.  That worked great, but now I would like to move them to a new server (delano) using cephadm.  Unfortunately I'm not finding any clear way to do that from the docs.

I tried the following without any luck (https://docs.ceph.com/en/latest/cephadm/services/osd/#activate-existing-osds):

# ceph cephadm osd activate delano

But it didn't find the OSDs even though 'ceph-volume lvm list' see them fine.  What is the magic I'm missing?

Thanks,
Bryan
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