I am quite sure that this case is covered by cephadm already. A few
months ago I tested it after a major rework of ceph-volume. I don’t
have any links right now. But I had a lab environment with multiple
OSDs per node with rocksDB on SSD and after wiping both HDD and DB LV
cephadm automatically redeployed the OSD according to my drive group
file.
Zitat von Stefan Kooman <stefan@xxxxxx>:
On 3/19/21 7:47 PM, Philip Brown wrote:
I see.
I dont think it works when 7/8 devices are already configured, and
the SSD is already mostly sliced.
OK. If it is a test cluster you might just blow it all away. By
doing this you are simulating a "SSD" failure taking down all HDDs
with it. It sure isn't pretty. I would say the situation you ended
up with is not a corner case by any means. I am afraid I would
really need to set up a test cluster with cephadm to help you
further at this point, besides the suggestion above.
Gr. Stefan
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